With Sicp, Spfi, Or Polymer Thereof Patents (Class 525/58)
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Patent number: 6221960Abstract: The present invention provides golf balls having a cover, a core, and optionally one or more intermediate layers between the cover and the core, wherein at least one of the cover, the core and, if present, the intermediate layer or layers, includes an anionic polymer. The anionic polymer has at least one of a neutralizable hydroxyl or dealkylable ether group, at least a portion of which are neutralized or dealkylated by a metal ion to provide anionic moieties. The anionic polymer compositions of the present invention can be used to provide improved characteristics to golf balls made therefrom.Type: GrantFiled: December 23, 1998Date of Patent: April 24, 2001Assignee: Asushnet CompanyInventor: Murali Rajagopalan
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Patent number: 6214932Abstract: A process comprising mixing polyamide and another polymer, such as polyvinylalcohol and/or polyethyleneimine and reacting the polyamide/other polymer mixture with epichlorohydrin and the use of the reaction product as creping adhesive.Type: GrantFiled: December 29, 1998Date of Patent: April 10, 2001Assignee: Hercules IncorporatedInventor: William Walter Maslanka
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Patent number: 6211289Abstract: Modified polyvinyl acetals are prepared by saponification of 1-alkylvinyl acetate-vinyl acetate copolymers, which contain 1-alkylvinyl acetate/vinyl acetate in a weight ratio of 1/99-40/60 and subsequent acetalization the saponification products containing at least 80% units of vinyl alcohol and 1-alkyl vinyl alcohol with one or more aliphatic aldehydes with 1-6 C atoms under acid catalysis in an aqueous and/or organic medium; as well as to a method for the manufacture and the use thereof, especially in printing inks.Type: GrantFiled: November 25, 1998Date of Patent: April 3, 2001Assignee: Wacker Chemie GmbHInventors: Peter Tschirner, Peter Heiling, Otto-Sebastian Huber, Guenter Braunsperger, Klaus Haefner, Georg Friedl
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Patent number: 6200720Abstract: A graft resin having a structure of the formula (1) and having a number average molecular weight of 2,000 to 50,000, has excellent low-temperature moldability and exhibits an excellent shelf life against softening when stored at high temperatures, and an electrostatic charge developing toner containing the above graft resin as a binder exhibits excellent low-temperature fixing properties, developability and transferability without impairing the shelf life.Type: GrantFiled: June 8, 1999Date of Patent: March 13, 2001Assignee: Tomoegawa Paper Co., Ltd.Inventor: Toshio Tagami
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Patent number: 6180689Abstract: The present invention concerns a fluid loss control agent for a petroleum industry (or analogous) cement slurry, comprising a surfactant and a micro-gel obtained by chemical cross-linking of a polyvinyl alcohol. The micro-gel and the surfactant are advantageously compatible with a wide range of petroleum industry cement additives and can also produce compositions which are gas tight.Type: GrantFiled: October 26, 1999Date of Patent: January 30, 2001Assignee: Schlumberger Technology CorporationInventor: Eric Moulin
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Patent number: 6172180Abstract: The present invention relates to a block copolymer containing 1-50 first polymer segments and 1-50 second polymer segments. Each first polymer segment has an average mole fraction of monomers possessing a branch point of 0.0001 to 1, whereas each second polymer segment has an average mole fraction of monomers possessing a branch point of 0 to 0.5. The average molecular weights range from 5-2,000 kDa for the first polymer segments, which constitute 5-95% by weight of the block copolymer. The average molecular weights also range from 5-2,000 kDa for the second polymer segments, which constitute 5-95% by weight of the block copolymer. The ratio of the average mole fraction of monomers possessing a branch point of the second polymer segments to that of the first polymer segments is 0 to 0.5. An example of such a copolymer has ethylene oxide or ethylene oxide/propylene oxide as the first polymer segment and polysulfone as the second polymer segment. This block copolymer can further be blended with a bulk polymer.Type: GrantFiled: August 25, 1998Date of Patent: January 9, 2001Assignee: Circe Biomedical, Inc.Inventors: Lawrence F. Hancock, Stephen M. Fagan, Claudy J.-P. Mullon
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Patent number: 6166117Abstract: A water-soluble film, comprising 100 parts by weight of (A) a sulfonic acid group modified polyvinyl alcohol and 0.05-20 parts by weight of (B) gallic acid, salts thereof or a C.sub.1-5 alkyl ester thereof.Type: GrantFiled: June 10, 1998Date of Patent: December 26, 2000Assignee: Kuraray Co., Ltd.Inventor: Hirotoshi Miyazaki
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Patent number: 6165602Abstract: A laminated polyester film stretched in at least one direction, comprising:a polyester support, andat least one enhanced adhesion layer laminated on the polyester support, comprising a composition comprising:(1) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a vinylpyrrolidone copolymer resin (C1); or(2) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a polyglycerol polyglycidyl ether (C2); or(3) an aqueous-type polyurethane (A3), a polyvinyl alcohol resin (B3), and inert particles wherein the thickness (L) of the adhesion layer and the average particle diameter (d) of said inert particles satisfies the equation1/3.ltoreq.d/L.ltoreq.3.Type: GrantFiled: June 11, 1998Date of Patent: December 26, 2000Assignee: Mitsubishi Polyester Film CorporationInventor: Masato Fujita
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Patent number: 6150460Abstract: Novel polyfunctional glyoxylated compounds and compositions containing the same are disclosed which are particularly suitable for use as crosslinking components in curable compositions and also find use in imparting wet adhesion properties to water-based paints and coatings. A process for preparing novel polyfunctional glyoxylated compounds is also disclosed.Type: GrantFiled: November 3, 1999Date of Patent: November 21, 2000Assignee: Cytec Technology Corp.Inventors: Balwant Singh, Laurence Wu-Kwang Chang
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Patent number: 6143384Abstract: The present invention provides a container for retort packaging comprising a laminated film having an outermost layer comprising a layer formed of a cross-linked structure containing ester bonds between poly(meth)acrylic acid (A) and polyalcoholic polymer (B); a resin composition having at least the chemical structures (X) [poly(meth)acrylic acid (A) residue], (Y) [poly(meth)acrylic acid (A)-polyalcoholic polymer (B) residue] and (Z) [metal cross-linked ionic residues], wherein the degree of esterification defined by the equation: degree of esterification=c/(b+c+d) is from 0.01 to 0.5 and the degree of ionization defined by the equation: degree of ionization=c/(b+c+d) is from 0.01 to 0.9 (wherein b, c and d represent the molar ratios of the carbon-oxygen double bond in the chemical structure of the resin composition; and a gas barrier film comprising the same.Type: GrantFiled: November 10, 1999Date of Patent: November 7, 2000Assignee: Kureha Chemical Industry Co LtdInventors: Hideaki Tanaka, Hiroyuki Ohba, Tomoaki Sato, Tomohisa Hasegawa
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Patent number: 6140018Abstract: The invention provides a photosensitive resin and a photosensitive resin composition having excellent water resistance after hardening, excellent developability, and excellent patterning characteristics, and a pattern formation method making use of the composition. The invention provides saponified PVA photosensitive resin which contains structural units represented by formulas (I) and (II): ##STR1## the content of the structural units represented by formulas (I) and (II) in the resin being 0.5-10 mol % with respect to entirety of the structural units of the saponified product of PVA.Type: GrantFiled: August 5, 1999Date of Patent: October 31, 2000Assignee: Toyo Gosei Kogyo Co., Ltd.Inventors: Noriaki Tochizawa, Mitsuharu Miyazaki, Takaho Ito
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Patent number: 6113811Abstract: A dichroic polarizing film is made, for example, by, first combining polyvinyl alcohol and a second polymer, such as, polyvinyl pyrrolidone or a sulfonated polyester, in a solvent. The ratio of polyvinyl alcohol to second polymer is between about 5:1 to 100:1 by weight. The film is coated on a substrate, dried, and then stretched to orient at least a portion of the film. The film incorporates a dichroic dye material, such as iodine, to form a dichroic polarizer. This polarizer may be used in conjunction with a multilayer optical film, such as a reflective polarizer, to form an optical polarizer. The multilayer optical film may contain two or more sets of polyester films, where at least one of the sets is birefringent and orientable by stretching. The polyvinyl alcohol/second polymer film and the multilayer optical film may be simultaneously stretched to orient both polymer films.Type: GrantFiled: January 13, 1998Date of Patent: September 5, 2000Assignee: 3M Innovative Properties CompanyInventors: William L. Kausch, Brian H. Williams, William W. Merrill
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Patent number: 6107401Abstract: This invention relates to a process for producing an aminoalkylal derivative of polymer containing a plurality of polymerized vinyl alcohol units which are vicinal, preferably a process for producing the 4-aminobutyral of poly(vinyl alcohol). The improved process for the amino-acetalization of such polymers described herein comprises reacting a 5 of 6 member cyclic imine of the structure ##STR1## wherein n is an integer from 3 to 4 with the polymer containing a plurality of polymerized vinyl alcohol units. In a preferred reaction, 1,2-pyrroline is reacted with the polymer containing polymerized vinyl alcohol units under acidic conditions. Preferably the reaction is carried out by a slurry phase process employing a non solvent carrier such as methanol for the poly(vinyl alcohol). The reaction scheme for preparing the 4-aminobutyral of poly(vinyl alcohol) may be characterized by the following equation.Type: GrantFiled: March 26, 1998Date of Patent: August 22, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Gregory Paul Dado, Kevin Rodney Lassila, Kenneth Merle Kem
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Patent number: 6103809Abstract: The present invention relates to a thermoplastic composition comprising at least one crystalline water sensitive polymer and at least one amorphous water sensitive polymer. The thermoplastic composition may optionally further comprise additional ingredients such as other polymers, tackifying resins, plasticizers, waxes, and mixtures thereof. The thermoplastic compositions are useful in a variety of applications wherein water or moisture sensitive thermoplastic materials are employed such as various packaging adhesive applications including case and carton sealing, remoistenable adhesives, repulpable/recyclable adhesives and multiwall bag applications. The present invention is also useful for moisture activatable reinforcement strings and opening tapes for corrugated containers, as well as for a variety of nonwoven applications such as body fluid impermeable barriers, core stabilization adhesives, and construction adhesives.Type: GrantFiled: November 18, 1998Date of Patent: August 15, 2000Assignee: H.B. Fuller Licensing & Financing, Inc.Inventors: Sharf U. Ahmed, Andualem Emiru, Leslie J. Clapp, Mark S. Kroll, Greg J. VanLith
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Patent number: 6087066Abstract: This invention relates to polyvinyl acetals containing the units A, B, C and D, whereinA is present in an amount of 0.5 to 20 wt.-% and is of the formula ##STR1## B is present in an amount of 15 to 35 wt.-% and is of the formula ##STR2## C is present in an amount of 10 to 50 wt.-% and is of the formula ##STR3## wherein R.sup.1 is an alkyl group with up to 4 carbons, which is optionally substituted by an acid group, or a phenyl group, to which an acid group is attached, wherein the phenyl group optionally comprises 1 to 2 further substituents selected from halos, amino, methoxy, ethoxy, methyl and ethyl groups, or is a group X--NR.sup.6 --CO--Y--COOH, wherein X is an aliphatic, aromatic or araliphatic spacer group, R.sup.6 is hydrogen or an aliphatic, aromatic or araliphatic moiety and Y is a saturated or unsaturated chain- or ring-shaped spacer group, and this unit C may be contained several times with various moieties R.sup.1 independent of one another, and D is present in an amount of 25 to 70 wt.Type: GrantFiled: October 14, 1999Date of Patent: July 11, 2000Assignee: Kodak Polychrome Graphics LLCInventors: Harald Baumann, Celin Savariar-Hauck, Hans-Joachim Timpe
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Patent number: 6068922Abstract: A process for making a substantially uniform composition of short aramid fibers and polymer wherein the fibers are provided with a significant moisture content to improve handling characteristics and are partially dried and opened by shear forces in an extruder before contact with the polymer in the extruder.Type: GrantFiled: April 14, 1998Date of Patent: May 30, 2000Assignee: E. I. du Pont de Nemours and CompanyInventors: Giorgio P. Vercesi, Jean Pierre Jakob, Nicolas Cudre-Mauroux
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Patent number: 6027814Abstract: The invention relates to a composition including (i) at least one polyamide and at least one copolymer (A) of ethylene with at least one comonomer chosen from unsaturated carboxylic acids, esters of unsaturated carboxylic acids or vinyl esters of saturated carboxylic acids and (ii) being in powder form. These compositions are subsequently deposited on metal substrates and then a highly corrosion-resistant coating is obtained by melting.Type: GrantFiled: October 6, 1997Date of Patent: February 22, 2000Assignee: Elf Atochem S.A.Inventors: Olivier Julien, Michael Werth, Arnaud Tedoldi, Jean-Marc Sage
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Patent number: 6022913Abstract: The present invention provides a container for retort packaging comprising a laminated film having an outermost layer comprising a layer formed of a cross-linked structure containing ester bonds between poly(meth)acrylic acid (A) and polyalcoholic polymer (B); a resin composition having at least the chemical structures (X) [poly(meth)acrylic acid (A) residue], (Y) [poly(meth)acrylic acid (A)-polyalcoholic polymer (B) residue] and (Z) [metal cross-linked ionic residues], wherein the degree of esterification defined by the equation: degree of esterification=c/(b+c+d) is from 0.01 to 0.5 and the degree of ionization defined by the equation: degree of ionization=c/(b+c+d) is from 0.01 to 0.9 (wherein b, c and d represent the molar ratios of the carbon-oxygen double bond in the chemical structure of the resin composition; and a gas barrier film comprising the same.Type: GrantFiled: May 6, 1998Date of Patent: February 8, 2000Assignee: Kureha Chemical Industry Co. Ltd.Inventors: Hideaki Tanaka, Hiroyuki Ohba, Tomoaki Sato, Tomohisa Hasegawa
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Patent number: 6017634Abstract: A thermally curable adhesive composition that includes a fluxing agent that also acts as an adhesive is provided. The composition includes: (a) a fluxing agent represented by the formula RCOOH, wherein R comprises a moiety having two or more carbon-carbon double bonds wherein in one embodiment, at least one is within an acrylate or methacrylate group, and which may further contain at least one aromatic moiety; (b) a carboxylic acid neutralizing agent; (c) optionally, a crosslinkable diluent; (d) optionally, a source of free radical initiators; and (e) optionally, a resin. The composition can be applied directly onto the surface(s) of devices that are to be joined electrically and mechanically. These devices include, printed circuit substrates, connectors, components, cables, and other electrical devices having metallization patterns to be soldered together by means of a solder-bumped pattern on one or both surfaces.Type: GrantFiled: January 23, 1998Date of Patent: January 25, 2000Assignee: Miguel Albert CapoteInventors: M. Albert Capote, Liqui Zhou, Xioqui Zhu
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Patent number: 6011115Abstract: A thermoplastic resin composition comprising 50 to 85 parts by weight of an ethylene-vinyl alcohol copolymer, 10 to 40 parts by weight of an ionomer of ethylene-unsaturated carboxylic acid copolymer containing about 5 to 12 mole % of unsaturated carboxylic acid, and 1 to 25 parts by weight of a polyamide and a packaging material comprising said resin composition are provided. The resin composition is excellent in gas barrier property, impact resistance, pinhole resistance, stretchability, drawability and transparency and is preferably used for packaging material.Type: GrantFiled: September 2, 1997Date of Patent: January 4, 2000Assignee: DuPont-Mitsui Polychemicals Co. Ltd.Inventors: Kenji Miharu, Hitoshi Tachino
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Patent number: 5994449Abstract: Disclosed are resin compositions that are the reaction product of epihalohydrin with a mixture of polyaminoamide and vinyl amine polymer containing a minimum of about 1 mole % vinyl amine monomer units, wherein said polyaminoamide comprises the reaction product of dicarboxylic acid, or a derivative thereof, with polyamine selected from the group consisting of methyl bis(3-aminopropyl)amine and polyalkylenepolyamine containing from two to four alkylene groups having two to four carbons, two primary amine groups, and one to three secondary amine groups. Also disclosed are a process for creping fibrous webs utilizing the resin compositions, and creped paper prepared by the process. Also disclosed is wet and dry strength paper containing the resin compositions and processes for creping fibrous webs utilizing the resin compositions as creping adhesives.Type: GrantFiled: January 23, 1997Date of Patent: November 30, 1999Assignee: Hercules IncorporatedInventor: William Walter Maslanka
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Patent number: 5985117Abstract: Ion-selective membranes are disclosed which are suitable for use in ion-selective sensors. The membranes include a mercuracarborand ionophore. Exemplary ion-selective membranes include Mercuracarborand-3 as the ionophore which is incorporated within a polymer matrix. The ion-selective membranes may be used in a wide variety of ion sensors including ion-selective membrane electrodes.Type: GrantFiled: December 29, 1997Date of Patent: November 16, 1999Assignee: The Regents of the University of CaliforniaInventors: Leonidas G. Bachas, M. Frederick Hawthorne, Ibrahim H. A. Badr
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Patent number: 5977253Abstract: Disclosed is a resol phenolic thermosetting resin made by preparing a composition of formaldehyde and a phenol in a molar ratio of about 1:1 to about 3:1, about 1 to about 20 wt %, based on the weight of said composition, of a phenol-formaldehyde polymerization catalyst, and about 0.5 to about 10 wt %, based on the weight of said phenol, of a polyvinyl alcoholic compound. The phenol can be benzophenol, an alkyl from C.sub.1 to C.sub.12 phenol, a bisphenol, or a mixture thereof. The bisphenol can be bisphenol A, bisphenol F, or bisphenol S. The polyvinyl alcoholic compound can be polyvinyl alcohol, polyvinyl acetate, an acetal derived from polyvinyl alcohol, or a mixture thereof. The composition is heated at about 50 to about 120.degree. C. to form the resin.Type: GrantFiled: March 2, 1998Date of Patent: November 2, 1999Assignee: Occidental Chemical CorporationInventor: Michelle Warakomski
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Patent number: 5945480Abstract: The present invention is a water-responsive fiber. More particularly, the present invention is a fiber comprising a blend of a polyvinyl alcohol and a polylactide and a method of making such fibers. In a preferred embodiment, the invention is a fiber comprising a blend of polyvinyl alcohol and modified polylactide and a method of making such fibers. The fibers are useful as a component in flushable and degradable articles.Type: GrantFiled: July 31, 1997Date of Patent: August 31, 1999Assignee: Kimberly-Clark Worldwide, Inc.Inventors: James Hongxue Wang, David Michael Schertz, Dave Allen Soerens, Hannong Rhim
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Patent number: 5922808Abstract: A PVA-base copolymer is obtained by subjecting a lactone, whose ring is formed of 3 to 10 carbon atoms, to ring-opening polymerization in the presence of polyvinyl alcohol (PVA). The copolymer comprises a PVA chain and an aliphatic polyester grafted as a ring-opened polymer of the lactone on the PVA chain. Further, the copolymer has a PVA content of 2 to 98 wt. %, a polyester content of 98 to 2 wt. %, and a number average molecular weight of 10,000 to 500,000.Type: GrantFiled: June 25, 1997Date of Patent: July 13, 1999Assignees: Dainichiseika Color&Chemicals Mfg. Co., Ltd, Ukima Colour&Chemicals Mfg. Co., LtdInventors: Kazuyuki Hanada, Katsumi Kuriyama
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Patent number: 5904974Abstract: A PVA-base copolymer is obtained by subjecting a lactone, whose ring is formed of 3 to 10 carbon atoms, to ring-opening polymerization in the presence of polyvinyl alcohol (PVA). The copolymer comprises a PVA chain and an aliphatic polyester grafted as a ring-opened polymer of the lactone on the PVA chain. Further, the copolymer has a PVA content of 2 to 98 wt. %, a polyester content of 98 to 2 wt. %, and a number average molecular weight of 10,000 to 500,000.Type: GrantFiled: June 25, 1997Date of Patent: May 18, 1999Assignees: Dainichiseika Color & Chemicals Mfg.Co., Ltd, Ukima Colour & Chemicals Mfg. Co., LtdInventors: Kazuyuki Hanada, Katsumi Kuriyama
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Patent number: 5900463Abstract: A composition comprising (A) polyvinyl alcohol having an amino group connected to a phenyl group and (B) at least one water resistance-imparting agent selected from polyepoxy compound, aldehyde compound, polyisocyanate compound, and water-soluble oxidizing agent; the composition exhibits outstanding water resistance even when used at room temperature; the composition finds use as a woodworking adhesive, plywood adhesive, and two-part instantaneously curing adhesive which does not require heating for curing.Type: GrantFiled: October 7, 1997Date of Patent: May 4, 1999Assignee: Kuraray Co., Ltd.Inventors: Seiji Tanimoto, Masato Nakamae, Toshiaki Sato
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Patent number: 5891956Abstract: Water-soluble polymers including functionalization from the group of amino groups, carboxylic acid groups, phosphonic acid groups, phosphonic ester groups, acylpyrazolone groups, hydroxamic acid groups, aza crown ether groups, oxy crown ethers groups, guanidinium groups, amide groups, ester groups, aminodicarboxylic groups, permethylated polyvinylpyridine groups, permethylated amine groups, mercaptosuccinic acid groups, alkyl thiol groups, and N-alkylthiourea groups are disclosed.Type: GrantFiled: May 30, 1995Date of Patent: April 6, 1999Assignee: The Regents of the University of California, Office of Technology TransferInventors: Barbara F. Smith, Thomas W. Robison, Joel W. Gohdes
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Patent number: 5883156Abstract: An antifouling paint composition comprising a binder resin composition containing a biodegradable resin being obtained by polymerizing a cyclic lactone compound with at least two active hydrogen groups of a compound containing at least two active hydrogen groups in one molecule, and an antifouling additive being mixed with the binder resin composition in a weight ratio of the binder resin composition to the antifouling additive from 1:2 to 7:1, the binder resin composition having a gel fraction of not more than 5% by weight.Type: GrantFiled: April 4, 1997Date of Patent: March 16, 1999Assignee: Nippon Paint Co., Ltd.Inventors: Koichi Fukuda, Junji Yokoi
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Patent number: 5849810Abstract: The invention relates to a novel process for the manufacture of mouldings, especially contact lenses, in which a soluble prepolymer comprising crosslinkable groups is crosslinked in solution, and also to mouldings, especially contact lenses, obtainable in accordance with that process. The present invention relates also to novel prepolymers that can be used in the process according to the invention, especially derivatives of a polyvinyl alcohol having a molecular weight of at least about 2000 that, based on the number of hydroxy groups of the polyvinyl alcohol, comprise from approximately 0.5 to approximately 80% of units of formula I ##STR1## wherein R is lower alkylene having up to 8 carbon atoms,R.sup.1 is hydrogen or lower alkyl andR.sup.Type: GrantFiled: July 3, 1996Date of Patent: December 15, 1998Assignee: CIBA Vision CorporationInventor: Beat Muller
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Patent number: 5837768Abstract: A creping adhesive containing about 1% to about 25% by weight solids comprising a multipolymer blend of polyoxazoline, polyethyleneimine, and modified polyethyleneimine, which imparts softness and resistance to bleaching, to a cellulosic web, and methods of using same are provided.Type: GrantFiled: February 5, 1997Date of Patent: November 17, 1998Assignee: Hercules IncorporatedInventors: Joseph F. Warchol, Cynthia D. Walton
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Patent number: 5817717Abstract: The present invention relates to crosslinkable or crosslinked silicone compositions capable of being employed especially for forming an abherent coating or film for a fibrous or other support, for example made of paper or the like, or made of natural or synthetic polymer (film). One of the essential objectives of the invention is to provide a crosslinkable or crosslinked silicone composition which provides a satisfactory solution to the abherence/printability dilemma, traditionally encountered in abherent silicone coatings. This objective and others are attained by the composition of the invention, including at least one polyorganosiloxane and at least one polyvinyl alcohol corresponding to the following specifications: ester value (E.V.) higher than or equal to 80, preferably 100 and still more preferably between 120 and 200, and standard dynamic viscosity (.eta..sub.Type: GrantFiled: June 7, 1995Date of Patent: October 6, 1998Assignee: Rhone-Poulenc ChimieInventors: Andre Lievre, Christian Mirou
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Patent number: 5807927Abstract: A process for the production of mouldings, in particular contact lenses, in which a water-soluble, crosslinkable polymer is crosslinked in solution, and mouldings, in particular contact lenses, obtainable by this process; and novel water-soluble, crosslinkable polymers which can be employed in the crosslinking process, in particular those based on polyvinyl alcohol having a molecular weight of at least about 2000 which comprises units of the formulae: XI and XII, XI and XIII or XI, XII and XIII. In said Formulae, U is (a) or --Y--NH--CO--O--Z--O--CH.dbd.CH.sub.Type: GrantFiled: September 12, 1997Date of Patent: September 15, 1998Assignee: CIBA Vision CorporationInventors: Friedrich Stockinger, Beat Muller
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Patent number: 5804653Abstract: A moldable polymeric compound containing about 50 to 99 weight percent of a polyvinyl alcohol and about 1 to 50 weight percent of an oxa acid plasticizer, suitable for molding biodegradable and water dispersible objects such as tampon applicators.Type: GrantFiled: March 7, 1997Date of Patent: September 8, 1998Assignee: Playtex Products, Inc.Inventor: Dexi Weng
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Patent number: 5792809Abstract: Disclosed herein is a polyvinyl alcohol shaped article which comprises a polyvinyl alcohol (A) and rubber particles (B), said rubber particles (B) comprising a rubber component having a glass transition temperature of 5.degree. C. or less and an average particle diameter of 5 .mu.m or less and a polyvinyl alcohol (C) being bonded to the surface of said rubber component, with the weight ratio of said rubber component on the basis of the total weight of said polyvinyl alcohols being in the range of 0.03 to 2. The polyvinyl alcohol shaped article of the present invention has a high impact strength at low temperatures and in low humidity, and also has a high strength and Young's modulus in high humidity, and has an excellent appearance.Type: GrantFiled: April 10, 1997Date of Patent: August 11, 1998Assignee: Kuraray Co., Ltd.Inventors: Masahiro Nagao, Masato Nakamae, Takeshi Kusudou, Hirotoshi Miyazaki
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Patent number: 5789464Abstract: The invention relates to a novel process for the manufacture of mouldings, especially contact lenses, in which a soluble prepolymer comprising crosslinkable groups is crosslinked in solution, and also to mouldings, especially contact lenses, obtainable in accordance with that process. The present invention relates also to novel prepolymers that can be used in the process according to the invention, especially derivatives of a polyvinyl alcohol having a molecular weight of at least about 2000 that, based on the number of hydroxy groups of the polyvinyl alcohol, comprise from approximately 0.5 to approximately 80% of units of formula I ##STR1## wherein R is lower alkylene having up to 8 carbon atoms,R.sup.1 is hydrogen or lower alkyl andR.sup.Type: GrantFiled: December 22, 1995Date of Patent: August 4, 1998Assignee: CIBA Vision CorporationInventor: Beat Muller
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Patent number: 5777025Abstract: A low-sediment, low-tar, chlorine-free thermal process for preparing oil-soluble polyalkenyl derivatives of monounsaturated C.sub.4 -C.sub.10 dicarboxylic acid producing compounds is disclosed. The process involves reacting the dicarboxylic acid producing compound with a polyalkene at high temperature and under high inert gas partial pressure in the presence of a sediment-inhibiting amount of hydrocarbyl substituted sulfonic acid. The polyalkenyl derivatives are useful per se as additives in lubricating oils, functional fluids, and fuels and are also useful as intermediates in the preparation of other products (e.g., succinimides) useful as additives in lubricating oils, functional fluids, and fuels.Type: GrantFiled: February 9, 1996Date of Patent: July 7, 1998Assignee: Exxon Chemical Patents Inc.Inventors: Jeremy R. Spencer, Robert W. Russell, Ronald P. Wangner
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Patent number: 5777027Abstract: A novel lactone-modified polyvinyl acetal resin and a novel carboxyl-modified resin thereof are disclosed. The novel resins of the present invention can be used as a polyol resin for coatings curable at ordinary temperatures or heating, adhesives, binders, a processing agent for fibers, a curable resin composition by mixing with a curing agent which can react to hydroxyl groups, and a composition for a magnetic recording medium, etc. The novel resins of the present invention have graft chains containing primary hydroxyl groups bonded to the ester group derived from a lactone compound, or the primary hydroxyl groups and carboxylic groups.Type: GrantFiled: October 30, 1995Date of Patent: July 7, 1998Assignee: Daicel Chemical Industries, Ltd.Inventors: Toshio Endo, Takaaki Fujiwa, Tomohisa Isobe, Kazushi Watanabe
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Patent number: 5770654Abstract: A composition which is a uniform blend of 50-90 weight % of a polyamide melt-processable within the temperature range of 180.degree.-210.degree. C. and 50-10 weight % of recovered plasticized polyvinylbutyral, optionally also containing a small amount of an elastomeric ethylene copolymer carrying pendant succinic anhydride groups, has high impact strength and good flexural modulus. The polyamide in these compositions forms the matrix, and the plasticized polyvinylbutyral and any elastomer present form the dispersed phase. Such compositions have good barrier properties and are useful, among others, in applications where good toughness is required, for example, in packaging subjected to rough handling.Type: GrantFiled: March 20, 1997Date of Patent: June 23, 1998Assignee: E. I. du Pont de Nemours and CompanyInventor: Philip Strubing Blatz
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Patent number: 5760131Abstract: Rigid-rod and segmented rigid-rod polymers, methods for preparing the polymers and useful articles incorporating the polymers are provided. The polymers incorporate rigid-rod backbones with pendant solubilizing groups attached thereto for rendering the polymers soluble.Type: GrantFiled: June 2, 1995Date of Patent: June 2, 1998Assignee: Maxdem IncorporatedInventors: Matthew Louis Marrocco, III, Robert R. Gagne, Mark Steven Trimmer
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Patent number: 5716707Abstract: The present invention relates to a water absorbent composition comprising 100 parts by weight of water absorbing polymer particles and 0.5 to 30 parts of a resin powder having heat adhesion property at 50.degree.-200.degree. C. The present invention also relates to a water absorbing material and water absorbing products using the said water absorbing material comprising the water absorbing polymer particles, a resin having heat adhesion property at 50.degree.-200.degree. C. and fibrous material, wherein the water absorbing polymer particles are adhered to the fibrous material through the resin by heat treatment at temperature exceeding the temperature exhibits heat adhesion property of the resin. The water absorbent composition of the present invention provides excellent adhesion to a fibrous material, while it maintains the water absorbency of the original water absorbing polymer, and is consequently useful as raw material for sanitary goods such as disposable diapers and sanitary napkins etc.Type: GrantFiled: January 15, 1997Date of Patent: February 10, 1998Assignee: Sanyo Chemical Industries, Ltd.Inventors: Shingo Mukaida, Kazuhiko Iguchi, Kenji Tanaka
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Patent number: 5710211Abstract: According to the present invention, there are provided a process for producing a vinyl alcohol polymer comprising reaction of a vinyl ester polymer (A) having an epoxy group with a compound (B) having a thiol or thioester group and hydrolysis thereof, said hydrolysis being conducted during or after said reaction; and a process for producing a vinyl alcohol polymer comprising reaction of a vinyl ester polymer (C) having a thiol or thioester group with a compound (D) having an epoxy group and hydrolysis thereof, said hydrolysis being conducted during or after said reaction. According to the present invention, it is possible to efficiently introduce into PVA various functional groups having excellent reactivity, crosslinkability, ionic interactivity, water-solubility, interfacial physical properties, low-temperature flexibility, etc., under relatively mild reaction conditions.Type: GrantFiled: July 19, 1996Date of Patent: January 20, 1998Assignee: Kuraray Co., Ltd.Inventors: Toshiaki Sato, Naoki Fujiwara, Atsushi Jikihara
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Patent number: 5705553Abstract: Copolymers containing carboxyl groups in aqueous dispersion form or redispersible powder form and their water-soluble salts, based on ethylenically unsaturated and copolymerizable monomers, the macro-molecules of which contain at least 24% by weight of monomer units carrying carboxyl groups prepared, by emulsion copolymerization initiated by free radicals in the presence of polyvinyl alcohol (PVA) or polyvinylpyrrolidone (PVP) dissolved in the aqueous phase and isolation of the copolymers in aqueous dispersion form, and optionally subsequent removal of water by spray drying to obtain redispersible copolymer powders and processes for their preparation and their use as thickeners in aqueous formulations which copolymers, by conversion into their water-soluble salt forms, are useful as thickening agents having a surprisingly advantageous rheology-modifying action in aqueous systems.Type: GrantFiled: November 13, 1995Date of Patent: January 6, 1998Assignee: Hoechst AktiengesellschaftInventor: Rolf Kuropka
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Patent number: 5703159Abstract: Resins having a group reactive with an isocyanate group on a side chain are modified with isocyanatosiloxanes. In one form, the isocyanatosiloxane is a single end isocyanatosiloxane obtained by effecting addition reaction between a single end hydrogenosiloxane and an isocyanate group-containing organic silicon compound having one isocyanate group and at least one aliphatic unsaturated hydrocarbon group. A single end isocyanatosiloxane obtained by introducing an isocyanate group into a single end primary aminosiloxane is also useful. In another form, the isocyanatosiloxane is a polyfunctional isocyanatosiloxane which is obtained by effecting addition reaction between a hydrogenosiloxane having at least two SiH groups and an isocyanate group-containing organic silicon compound having one isocyanate group and one aliphatic unsaturated hydrocarbon group.Type: GrantFiled: December 11, 1995Date of Patent: December 30, 1997Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shoji Ichinohe, Toshio Yamazaki, Akira Yamamoto
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Patent number: 5681892Abstract: Coating compositions based on water-redispersible powders comprising water-soluble polymer and organosilicon compounds, wherein the organosilicon compounds comprise at least one low molecular weight organosilicon compound having a viscosity of not more than 5,000 mm.sup.2 /s at 25.degree. C. and at least one high molecular weight organopolysiloxane resin which has a viscosity of at least 100,000 mm.sup.2 /s at 25.degree. C. or is solid at room temperature.Type: GrantFiled: March 18, 1996Date of Patent: October 28, 1997Assignee: Wacker-Chemie GmbHInventors: Richard Weidner, Volker Frey, Ingeborg Koenig-Lumer, Hans Mayer
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Patent number: 5677360Abstract: A hydrophilic polymer alloy which has a permanent hydrophilic nature, a sufficient mechanical strength and a high safety and which is suitable for the formation of hydrophilic porous membranes manufacturable by an industrially advantageous process can be prepared by blending an amorphous hydrophilic copolymer (X) containing 10 mole % or more of an ethylene unit, 10 to 60 mole % of a vinyl alcohol unit and 1 mole % or more of a vinyl acetate unit with a polyolefin (Y). Furthermore, this polymer alloy is also suitable for the formation of hydrophilic (porous) fibers having a sufficient mechanical strength and antistatic function.Type: GrantFiled: June 2, 1995Date of Patent: October 14, 1997Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hisayoshi Yamamori, Makoto Uchida, Kenji Niikawa, Toshinobu Koshoji
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Patent number: 5658977Abstract: Cold water insoluble, hot water soluble and/or dispersible, disposable films, fabrics and other useful articles of manufacture are formed from a miscible polymeric resin blend comprised of cold water soluble partially hydrolyzed polyvinyl alcohol, cold water insoluble hot water disintegrable aliphatic polyester, and minor proportions of processing and performance aids. The aliphatic polyester has a melt temperature above the normal body temperature of a human (37 degrees C.; 98.6 degrees F.) and is present in the resin blend at a concentration sufficient to constitute the continuous phase of the blend, with the polyvinyl alcohol constituting a discontinuous phase of the blend. The aliphatic polyester thus renders the resin blend, and the partially hydrolyzed polyvinyl alcohol in the blend, cold water insoluble and determines the temperature at which articles formed from the blend will be subject to dissolution in an aqueous bath and subsequent disposal in an environmentally and ecologically sound fashion.Type: GrantFiled: January 11, 1996Date of Patent: August 19, 1997Assignee: Planet Polymer Technologies, Inc.Inventors: Xiaoming Yang, Robert J. Petcavich
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Patent number: 5639525Abstract: The invention relates to a polymer compound for the production of sealing elements for vessel or container closures, which sealing elements when closed have a barrier effect preventing the penetration of gaseous or vaporous substances such as oxygen or aromatic compounds, in particular benzenes, phenyl ethers and suchlike into the vessel and/or show an excess pressure valve effect at interior vessel pressures of between approx. 3 and 10 bar and may be produced by mechanical forming of the unshaped thermally plastified polymer compound and its subsequent hardening directly on or in the vessel closure ("in shell" moulding), comprising a mixture of butyl and/or acrylate rubber and a polymer of an .alpha.-oleflnic unsaturated monomer as well as, if appropriate, one or several further polymer components and common additives such as glide enhancers, pigment, talcum and stabilizers. The invention further relates to a sealing element of this kind and a corresponding vessel or container closure.Type: GrantFiled: March 11, 1992Date of Patent: June 17, 1997Assignee: DS-Chemie GmbHInventors: Tino Kuhn, Georg Schlenk
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Patent number: 5635553Abstract: A resin composition including (A) a mixture of one or more polyamide resins and one or more ethylene/vinyl alcohol copolymers; (B) 2,2'-methylenebis(4-methyl-6-tert-butylphenol); and (C) at least one polyalkyleneglycol is provided. The resin composition exhibits improved flowability during processing and remarkably decreased possibility of fish eye gel formation, thereby allowing for the production of formed products having a good external appearance.Type: GrantFiled: April 17, 1996Date of Patent: June 3, 1997Assignees: Sumitomo Chemical Co., Ltd., Ube Industries, Ltd.Inventors: Kanako Fukuda, Tetsuo Yamaguchi, Michiaki Yoshidomi, Yutaka Yamaguchi
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Patent number: 5635563Abstract: This invention provide a novel cross-linked polyaniline derivative soluble or capable of swelling in general organic solvents, which forms an elastic self-standing film or fibers. The polyaniline derivative substantially comprises a polyaniline having number average molecular weight in a range of from 2,000 to 500,000 represented by the following formula (I) as the main polymer chain, ##STR1## wherein m and n is 0 or an integer of at least 1, m/(m+n)=0-1, and m+n=10-5,000, and cross-linking units represented by the following formula (II) ##STR2## wherein X is a direct bond, a substituted or unsubstituted divalent C.sub.1 -C.sub.30 aliphatic hydrocarbon group, a substituted or unsubstituted divalent aromatic hydrocarbon group, a divalent polysiloxane group or a group derived therefrom, or a divalent group derived from a compound having 2 or more repeating structural unit, Y.sup.1 and Y.sup.Type: GrantFiled: September 30, 1993Date of Patent: June 3, 1997Assignee: Tomoegawa Paper Co., Ltd.Inventor: Osamu Oka