Solid Polymer Derived From Ethylenic Monomers Only Patents (Class 524/776)
  • Patent number: 12030973
    Abstract: A thermoplastic resin composition comprising: a graft copolymer (A) obtained by polymerizing a vinyl monomer mixture (m1) in the presence of a specific alkyl (meth)acrylate rubbery polymer (a); a graft copolymer (B) obtained by polymerizing a vinyl monomer mixture (m2) in the presence of a specific alkyl (meth)acrylate rubbery polymer (b); and a vinyl copolymer (C) obtained by polymerizing a vinyl monomer mixture (m3), wherein: a proportion of a rubbery polymer contained in the thermoplastic resin composition is 21 to 28% by mass, and a proportion of particles with a particle size of 300 nm or more among all particles formed by the rubbery polymer is 1 to 11% by mass.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: July 9, 2024
    Assignee: TECHNO-UMG CO., LTD.
    Inventors: Kentaro Hiraishi, Yoshiaki Shinohara, Ichiro Kamata
  • Patent number: 8933168
    Abstract: There is provided a cyanoacrylate composition comprising: a cyanoacrylate; and a 2-substituted benzothiazole or a derivative thereof wherein the 2-substituent is an alkyl, an alkene, an alkylbenzyl, an alkylamino, an alkoxy, an alkylhydroxy, an ether, a sulfenamide, a thioalkyl or a thioalkoxy group, with the proviso that an amide portion of the sulfenamide does not have a tert butylamino or a morpholine group.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: January 13, 2015
    Assignee: Henkel IP & Holding GmbH
    Inventors: William Hally, Emer Ward, Patricia A. Hedderman, Deborah A. Moore, Dermot F. Heatley
  • Patent number: 8580888
    Abstract: Two part cyanoacrylate/cationically curable adhesive systems are provided, which contain vinyl ethers.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: November 12, 2013
    Assignee: Henkel Ireland Limited
    Inventors: Raymond P. Tully, Barry N. Burns, Emer Ward, Mark Loane, Rachel M. Hersee
  • Patent number: 8217110
    Abstract: A cyanoacrylate-based adhesive composition is disclosed. The cyanoacrylate-based adhesive composition includes a cyanoacrylate monomer, and a bleachable dye including a Michler's hydrol cation or derivatized Michler's hydrol cation, paired with a non-nucleophilic anion that provides a stable color to the cyanoacrylate-based adhesive.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: July 10, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Kurt C. Melancon, George Van Dyke Tiers, Larry A. Lien, Scott D. Pearson
  • Patent number: 8022126
    Abstract: An encapsulating resin composition is provided, which gives a cured product having heat resistance, light resistance, and flexibility equivalent to those of silicone resins and having a refractive index of 1.57 or greater which is larger than that of epoxy resins. The encapsulating resin composition contains: a high refractive index acrylic-based or methacrylic-based monomer having a refractive index of 1.55 or greater; and a nonfunctional fluorene compound. In a preferred form, each of the high refractive index acrylic-based or methacrylic-based monomer and the nonfunctional fluorene compound has a 9,9-bisphenylfluorene skeleton.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: September 20, 2011
    Assignees: Sony Corporation, Sony Chemical & Information Device Corporation
    Inventors: Kouki Hatsuda, Hiroshi Samukawa
  • Publication number: 20110196092
    Abstract: There is provided a cyanoacrylate composition comprising: a cyanoacrylate; and a 2-substituted benzothiazole or a derivative thereof wherein the 2-substituent is an alkyl, an alkene, an alkylbenzyl, an alkylamino, an alkoxy, an alkylhydroxy, an ether, a sulfenamide, a thioalkyl or a thioalkoxy group, with the proviso that an amide portion of the sulfenamide does not have a tert butylamino or a morpholine group.
    Type: Application
    Filed: April 20, 2011
    Publication date: August 11, 2011
    Applicant: Loctite (R&D) Limited
    Inventors: William Hally, Emer Ward, Patricia A. Hedderman, Deborah A. Moore, Dermot F. Heatley
  • Publication number: 20110170939
    Abstract: The present invention relates to cyanoacrylate compositions in non-flowable and gel forms. More particularly, the present invention relates to non-flowable cyanoacrylate compositions which can be packaged in a convenient pocket-sized applicator dispenser for use in spreading the cyanoacrylate compositions onto substrates.
    Type: Application
    Filed: March 18, 2011
    Publication date: July 14, 2011
    Applicant: Henkel Corporation
    Inventor: Shabbir Attarwala
  • Patent number: 7772306
    Abstract: A series of mixtures of N-butyl cyanoacrylate and 2-octyl-cyanoacrylate monomers having specific and differing concentrations of free radical inhibitor/antioxidant stabilizers for each mixture of the two monomers. This results in cyanoacrylate compositions that can withstand radiation such as E-beam and gamma radiation at any desired level and not be adversely affected.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: August 10, 2010
    Assignee: Glustitch, Inc.
    Inventors: Donald S. Blacklock, Thomas J. Berger
  • Patent number: 6933341
    Abstract: The present invention relates to and uses, in order to prevent crude oil from “congealing” in a transportation line, a controlled-crosslinking thermal insulation gel, i.e. relatively fluid at the start and developing in-situ gelation in lines only under certain conditions, temperature conditions among other things. In order to obtain controlled crosslinking, it is possible to carry out 1) Physical crosslinkings, i.e. physical bonds between polymers—completely reversible bonds by thermal effect and/or mechanical shear—and 2) Chemical crosslinkings: monomers or polymers having functions allowing chemical bonds to be established between polymers.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: August 23, 2005
    Assignees: Saipem S.A., Institut Francais du Petrole, Condat SA
    Inventors: Nguyen Truong Dinh, Jean-Marc Basset, Stéphane Ruelle, Angèle Chomard
  • Patent number: 6858573
    Abstract: An anionic surfactant of the formula (I): R2—Y—(O)C—(HR)C—C(HR1)—C(O)—(OA)n—X wherein one of R and R1 is a C6 to C22 linear or branched alkyl or alkenyl, and the other is hydrogen; Y is O, or NH, or —NH—CH2—C(?CH2)—, or —N(CH2—CR3(?CH2))—CH2—C(?CH2)— where R3 is hydrogen or methyl; when Y is O, R2 is hydrogen, or a salt, or a C1 to C6 linear or branched alkyl, or an optionally substituted C3 to C10 linear or branched alkenyl; when Y is NH, or —NH—CH2—(?CH2)—, or —N(CH2—CR3(?CH2))—CH2—C(?CH2)— where R3 is hydrogen or methyl, R2 is hydrogen or methyl; OA is an oxyalkylene group; n is 2 to 100; and X is a group comprising at least one acidic H atom, or a salt thereof, and the use thereof in free radical initiated addition polymerisation, particularly emulsion polymerisation.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: February 22, 2005
    Assignee: Imperial Chemical Industries PLC
    Inventors: Johny Denis Grade, Trevor Blease
  • Patent number: 6590030
    Abstract: This invention relates to an anionic alkoxylate surfactant of formula (I), where R is a di- or tri-unsaturated C4-22 straight or branched hydrocarbon chain, at least two double bonds of said unsaturated chain being conjugated and exhibiting opposite geometric isomerism; m is 0 or 1; Y is O or NR′; each R′ is independently selected from hydrogen, C1-6 alkyl and phenyl; n is 1 to 50; and OX is an anionic group selected from the group consisting of acids or salts of sulfate, phosphate, sulphosuccinate, succinate, carbomethyl, maleate, carboxyethyl, alkenylsuccinate, phthalate, sulphoethyl, 3-sulpho-2-hydroxypropyl, sulphopropyl, oxalate and citrate.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: July 8, 2003
    Assignee: Orica Australia Pty Ltd
    Inventors: Elizabeth Ann Salter, Patrick William Houlihan, Michael Anthony Bajraszewski, Rodney Walter Parr, Keith Moody
  • Patent number: 6403711
    Abstract: A high elongation, low 100% modulus composition comprises a copolymer dispersed in a continuous phase polysiloxane. The copolymer is made from high amounts of at least a monomer which is capable of forming a low Tg polymer and relatively low amounts of at least a monomer which is capable of forming a high Tg polymer. The monomer forming the low Tg polymer can be an alkyl acrylate whereas the monomers forming the high Tg polymer can be a vinyl ester, an acrylonitrile or derivatives thereof, a vinyl substituted aromatic such as styrene, an alkyl methacrylate, and the like. The composition has good adhesion to substrates as well as good viscosity aging, and can be utilized in caulks or sealants.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: June 11, 2002
    Assignee: Noveon IP Holdings Corp.
    Inventors: Wei-Yeih Yang, Melvin Dale Beers, Ta-Min Feng
  • Patent number: 6319978
    Abstract: The present invention is directed to improved vinyl acetate ethylene pressure sensitive adhesive emulsion polymers. The improvement in the aqueous based, emulsion polymerized pressure sensitive adhesives resides in: a high ethylene content copolymer having a Tg of from −25 to −70° C.; a tensile storage modulus measured at one hertz and at a temperature of −20° C. embraced by the points on a plot of storage modulus and temperature of from 1 times 106 and the points 4 times 109 dynes/cm2 and less that 1 times 107 dynes/cm2 measured at 50° C.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: November 20, 2001
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Christian Leonard Daniels, Chung-Ling Mao, Richard Henry Bott, Menas Spyros Vratsanos
  • Patent number: 6218446
    Abstract: A radiation-curable formulation employs an electrically conductive primary filler, comprised of elements of elongate form and having surfaces that reflect the actinic radiation to which the photoinitiator employed is responsive, and a secondary filler that is electrically semiconducting and is substantially transparent to the actinic radiation; silver-coated cylindrical fibers or rods will typically constitute the primary conductive filler. Solid deposits cured from the formulation may function, for example, as sealing elements, gaskets, solder joints, and coatings.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: April 17, 2001
    Assignee: Dymax Corporation
    Inventors: John R. Arnold, Vu V. Lam, Andrew G. Bachmann
  • Patent number: 6191202
    Abstract: Alkyl cyanoacrylate compositions comprising at least one alkyl cyanoacrylate, a biocompatible plasticizer (preferably an acyl trialkyl citrate wherein the acyl group contains from 2 to 4 carbon atoms and each alkyl group contains from 4 to 6 carbon atoms), and SO2 as an anionic polymerization inhibitor are provided. These compositions are suitable for topical application to human skin.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: February 20, 2001
    Assignee: Medlogic Global Corporation
    Inventors: Richard J. Greff, Patrick J. Tighe, Michael M. Byram, Leonard V. Barley
  • Patent number: 6169125
    Abstract: A radiation-curable formulation employs an electrically conductive filler comprised of elements of elongate form, which elements have surfaces that reflect the actinic radiation to which the photoinitiator employed is responsive. Silver-coated cylindrical fibers or rods will typically constitute the conductive filler, and solid deposits cured from the formulation may function as, for example, sealing elements, gaskets, and solder-like joints. In certain preferred embodiments the formulation will include an active oxygen free radical-generating catalyst, the presence of which enhances curing even though the reaction conditions are such that normal thermal catalysis temperatures are not attained.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: January 2, 2001
    Assignee: Dymax Corporation
    Inventor: John R. Arnold
  • Patent number: 5957877
    Abstract: Disclosed are methods for draping a surgical site prior to surgery. Specifically, the methods of this invention involve the in situ formation of a cyanoacrylate polymeric drape on the skin surface of a patient peripheral to the surgical site. Surgery is then conducted at the surgical site.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: September 28, 1999
    Assignee: MedLogic Global Corporation
    Inventors: Ian N. Askill, Michael M. Byram, Richard J. Greff, Richard T. Vanryne
  • Patent number: 5847036
    Abstract: The present invention provides a (meth)acrylic molding material comprising (A) a (meth)acrylic polymer obtained by polymerization of monomer components essentially containing a monomer having (a) carboxyl group(s) and an alkyl (meth)acrylate monomer, and (B) one or more kinds of monomers containing a vinyl group, wherein 30-600 parts by weight of aluminum hydroxide and 0.01-10 parts by weight of a succinic acid derivative are added for 100 parts by weight of the total of said polymer (A) and monomer (B). The (meth)acrylic molding material is thickened by aluminum hydroxide and the thickening behavior is controlled by the succinic acid derivative to prevent the viscosity from increasing with time, accordingly, the (meth)acrylic molding material shows good workability.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: December 8, 1998
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kouji Takabatake, Yuichi Kawata, Shigeo Otome
  • Patent number: 5708064
    Abstract: Organic ophthalmic articles are photochromic and have high indices of refraction.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: January 13, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Charles R. Coleman, Robert D. Herold, Christopher D. Selvig
  • Patent number: 5665817
    Abstract: Alkyl cyanoacrylate compositions comprising at least one alkyl cyanoacrylate, a biocompatible plasticizer (preferably dioctyl phthalate), and SO.sub.2 as an anionic polymerization inhibitor are provided. These compositions are suitable for topical application to human skin.
    Type: Grant
    Filed: December 26, 1995
    Date of Patent: September 9, 1997
    Assignee: MedLogic Global Corporation
    Inventors: Richard J. Greff, Patrick J. Tighe, Michael M. Byram, Leonard V. Barley
  • Patent number: 5554662
    Abstract: A process for the production of stable, agglomerate-free, low viscosity graft copolymer dispersions through radical polymerization of ethylenically unsaturated monomers in the presence of a base polyol, a macromer, an enol ether of a specific formula, and optionally, an organic solvent. These enol ethers correspond to the general formula:A=CH--O--Rwherein:A represents a di-valent residue of the formula ##STR1## R represents an aliphatic hydrocarbon radical having 1 to 18 carbon atoms, a cycloaliphatic hydrocarbon radical having 5 to 10 carbon atoms, or a substituted or unsubstituted benzyl radical;andR' represents a hydrogen atom or an aliphatic hydrocarbon radical having 1 to 8 carbon atoms.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 10, 1996
    Assignee: Bayer Adtiengesellschaft
    Inventors: Josef Sanders, Mark Kratz, Manfred Dietrich, Torsten Heinemann, Helmut Woynar, Gundolf Jacobs, Uwe Scholz
  • Patent number: 5491190
    Abstract: Hot melt polymer/fatty acid compositions are described that render fibrous products such as paper, paperboard and corrugated paper containers water-resistant at room temperature, but enable such articles to be repulped and recycled when the coated articles are repulped in a heated nearly neutral to alkaline pH aqueous medium.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: February 13, 1996
    Assignee: S. C. Johnson & Son, Inc.
    Inventors: Paul E. Sandvick, Calvin J. Verbrugge
  • Patent number: 5480935
    Abstract: Alkyl cyanoacrylate compositions comprising at least one alkyl cyanoacrylate, a biocompatible plasticizer (preferably dioctyl phthalate), and SO.sub.2 as an artionic polymerization inhibitor are provided. These compositions are suitable for topical application to human skin.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: January 2, 1996
    Assignee: MedLogic Global Corporation
    Inventors: Richard J. Greff, Patrick J. Tighe, Michael M. Byram, Leonard V. Barley
  • Patent number: 5438093
    Abstract: Solution and RIM polymerization of cycloolefins containing at least one norbornene moiety is carried out in the presence of a methathesis catalyst system and an activator, particularly a chlorosilane activator, to obtain faster reaction with higher conversions at lower mold temperatures. The methathesis catalyst system includes an organoammonium molybdate or tungstate catalyst and an alkylaluminum or an alkylaluminum halide cocatalyst. The chlorosilane activator is used at a level of 0.05 to 10 millimoles per mole of the cycloolefin monomers. The polymers of cycloolefins can be impact modified and/or flame-retarded.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: August 1, 1995
    Assignee: B. F. Goodrich Company
    Inventors: Paul T. Stricharczuk, Robert J. Minchak, Timothy J. Kettering, Dennis J. Janda, Glen R. Gribble, Jr.
  • Patent number: 5428087
    Abstract: Finished articles made of flexible polyvinyl chloride (PVC) using plastisol technology are improved in terms of resistance to heat and solvents and reduction in plasticizer migration by incorporating into the traditional plastisol ingredients substantial amounts of blocked di- or polyisocyanates and di- or polyols and/or di- or polyamines, which, upon heating react with each other to form a polymer network within the article while the PVC is gelling.
    Type: Grant
    Filed: November 2, 1993
    Date of Patent: June 27, 1995
    Assignee: Norton Company
    Inventors: Dominique Petit, Michel Ladang
  • Patent number: 5288794
    Abstract: A cyanoacrylate monomer adhesive formulation which has improved thermal properties resulting from the inclusion in the formulation of an effective amount for enhancing the thermal resistance of the cured polymer of a mono, poly or hetero aromatic compound characterized by at least three substitutions on an aromatic ring thereof, two or more of said substitutions being electron withdrawing groups selected from the group consisting of NO.sub.2, CN, CF.sub.3, NR.sup.1.sub.3.sup.+, SR.sup.1.sub.2.sup.+, C(.dbd.O)R.sup.1, C(.dbd.O)OR.sup.1, NO, CCl.sub.3, SO.sub.2, S(.dbd.O), SO.sub.3, SO.sub.2 R.sup.1, SO.sub.2 OR.sup.1 and F, one or more of said substitutions being leaving groups selected from the group consisting of F, Br, Cl, I, NO.sub.2, CN, SOR.sup.1, SO.sub.2 R.sup.1 and SO.sub.2 OR.sup.1, and R.sup.1 is an optionally substituted hydrocarbon group. Example such compounds have the formula: ##STR1## where L is the leaving group and the W groups are the electron withdrawing groups.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: February 22, 1994
    Assignee: Loctite Corporation
    Inventor: Shabbir Attarwala
  • Patent number: 5286787
    Abstract: Moisture-curing jointing and sealing compounds containing polyurethane prepolymers are made more stable to weathering conditions by addition thereto of a reactive polysiloxane containing one or more functional groups which react with the polyurethane propolymers.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: February 15, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Tore Podola, Martin Majolo
  • Patent number: 5284906
    Abstract: The present invention relates to a process for preparing a rubber containing polymer bound functionalities. The process comprises the emulsion polymerization at a temperature ranging from about 0.degree. C. to about 25.degree. C. of (a) at least one functionalized monomer that contains a polymerizable vinyl group; with (b) at least one copolymerizable conjugated diene monomer selected from the group consisting of butadiene 1,3, 2-chlorobutadiene-1,3, isoprene, piperylene and conjugated hexadienes; wherein the polymerization is conducted in the presence of from (1) from 2 to 30 parts by weight of an ionic surfactant per 100 parts by weight of organic components and (2) about 1 to about 70 parts by weight of a plasticizer based on 100 parts by weight of total monomers.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: February 8, 1994
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Gerald O. Schulz, Dane K. Parker
  • Patent number: 5284908
    Abstract: A copolymer latex which is useful in an adhesive composition, a paper coating composition, an adhesive composition for carpet lining and an adhesive composition for a rock fiber substrate is prepared by emulsion copolymerizing an aliphatic conjugated diene monomer and at least one other monomer copolymerizable therewith in the presence of a chain transfer agent and at least one compound having no copolymerizing reactivity selected from the group consisting of hydrocarbons having 5 to 12 carbon atoms, halogenated aromatic hydrocarbons, five or six membered ring heterocyclic compounds, aliphatic ethers and aliphatic esters in an amount of 1 to 100 parts by weight per 100 parts by weight of a total amounts of the aliphatic conjugated diene monomer and the other monomer.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: February 8, 1994
    Assignee: Sumitomo Dow Limited
    Inventors: Wataru Fujiwara, Junko Hyoda, Yasushi Toyoda, Saburo Mishiba
  • Patent number: 5284907
    Abstract: The present invention relates to a process for preparing a masterbatch rubber containing polymer bound functionalized moieties. The process comprises the emulsion polymerization at a temperature from 40.degree. C. to 100.degree. C. of (a) at least one functionalized monomer that contains a polymerizable vinyl group; with (b) at least one copolymerizable conjugated diene monomer selected from the group consisting of butadiene-1,3,2 chlorobutadiene-1,3, isoprene, piperylene and conjugated hexadienes, wherein the polymerization is conducted in the presence of from (1) from 2 to 30 parts by weight of an ionic surfactant per 100 parts by weight of organic components and (2) about 10 to about 70 parts by weight of a plasticizer based on 100 parts by weight of total monomers.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: February 8, 1994
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Gerald O. Schulz, Dane K. Parker
  • Patent number: 5177143
    Abstract: The invention relates to novel gelloid composition comprising a crosslinked non-silicone polymer having an olefinic unsaturated content of less than 10 mole percent and having dispersed therein a liquid in an amount of from about 20% to about about 95% by weight based on the weight of the liquid and polymer and from 0 to 0.3 volume fraction of a filler, said cross-linked polymera) if derived from a solid, relatively high molecular weight polymer, having a gel fraction of at least about 50%, orb) if derived from a liquid, relatively low molecular weight polymer, having at least about 0.1 crosslinks per weight average molecule;said composition having a modulus of (1+2.5v+14.1v.sup.2)x dynes/cm.sup.2 wherein x is less than 5.times.10.sup.5 at 30.degree. C. and greater than 5.times.10.sup.2 at 90.degree. C., and v is the volume fraction of the filler, with the proviso that, if the crosslinked polymer is prepared from a solid high molecular eight polymer, the storage modulus at 140.degree. C.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: January 5, 1993
    Assignee: Raychem Corporation
    Inventors: Rong J. Chang, Lester T. Toy
  • Patent number: 5104923
    Abstract: A non-polymerizable polycarboxylate imparts greater wet strength to nonwovens bound by an emulsion polymer containing a polymerizable cross-linker.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: April 14, 1992
    Assignee: Union Oil Company of California
    Inventors: Paul J. Steinwand, Dennis P. Stack
  • Patent number: 4931483
    Abstract: Polymer/polyol compositions, obtained by polymerizing, in situ in a polyol, one or more ethylenically unsaturated monomers comprising an alpha-olefin containing at least 5 carbon atoms and/or an acrylate or methacrylate ester of an alcohol containing at least 9 carbon atoms, which are of relatively low viscosity and which afford polyurethanes having improved properties.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: June 5, 1990
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Masahiro Matsuoka, Keiichi Akimoto, Takeshi Sumita, Tsuyoshi Tomosada, Isao Ishikawa
  • Patent number: 4749506
    Abstract: A microgel dispersion characterized by that an oil-soluble surface active agent is adsorbed or adhered onto a gel consisting of a fine particle substance and a polymer, and said gel is dispersed in a non-aqueous organic solvent.
    Type: Grant
    Filed: September 19, 1985
    Date of Patent: June 7, 1988
    Assignee: Ricoh Co., Ltd.
    Inventors: Ayao Kitahara, Kijiro Konno
  • Patent number: 4680336
    Abstract: A method for forming shaped hydrogel articles such as soft contact lenses wherein hydrophilic monomers are mixed with an inert diluent prior to polymerization, and the diluent is replaced with water following the polymerization. Diluents yielding optically clear hydrogels with good mechanical properties are selected on the basis of their viscosity and their Hanson cohesion parameters relative to the cohesion parameters of the polymeric component of the hydrogel.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: July 14, 1987
    Assignee: Vistakon, Inc.
    Inventors: Hans O. Larsen, Ture Kindt-Larsen
  • Patent number: 4618630
    Abstract: An antistatic additive for polymers, particularly polyurethanes is disclosed comprising an ionizable metal salt and an enhancer comprising a non-ionizable salt or ester of an organic acid.
    Type: Grant
    Filed: July 2, 1985
    Date of Patent: October 21, 1986
    Assignee: The Dow Chemical Co.
    Inventors: Thomas M. Knobel, Earl E. Kennedy, Mary A. Walker
  • Patent number: 4565844
    Abstract: The propylene-ethylene block copolymer composition of the invention is excellent in transparency as well as in stiffness and low temperature impact strength.The copolymer composition of the present invention comprises (a) from 0.01 to 1.0 part by weight of a nucleating agent and (b) from 0.01 to 3.0 parts by weight of talc having an average particle size of not more than 10 microns, admixed in 100 parts by weight of propylene-ethylene block copolymer. Said propylene-ethylene block copolymer was formed in a multi-stage polymerization process wherein the ethylene content of the copolymer formed at the propylene-ethylene copolymerization stage is from 5 to 40% by weight based on the total polymerization amount of the copolymer formed at said propylene-ethylene copolymerization stage.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: January 21, 1986
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Toshikazu Kasahara, Toshifumi Kajiya, Tomio Akiyoshi
  • Patent number: 4532293
    Abstract: .alpha.-cyanoacrylate instant adhesive compositions obtained by adding benzophenonetetracarboxylic acid or anhydride thereof to .alpha.-cyanoacrylate and showing superior heat resistance of the degree of 150.degree. C. with keeping instant adhesive capacity.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: July 30, 1985
    Assignee: Kabushiki Kaisha Alpha Giken
    Inventors: Takayuki Ikeda, Kazuo Kouhara, Minoru Sasaki
  • Patent number: 4517347
    Abstract: In the emulsion copolymerization of styrene and acrylonitrile, the copolymer yield can be increased by adding certain antioxidant compounds to the emulsifier. These antioxidant compounds include an aromatic portion and a fatty acid portion, and may be, for example, a hydroquinone-fatty acid ester.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: May 14, 1985
    Assignee: Westvaco Corporation
    Inventors: John W. Gowan, Jr., Carlton G. Force
  • Patent number: 4485208
    Abstract: Incorporation of an ester plasticizer having a solubility parameter from about 7.8 to about 10.2 (cal/cc).sup.1/2 increases the flexibility and impact strength of poly(dicyclopentadiene). In a preferred embodiment of the method for poly(dicyclopentadiene) synthesis, the plasticizer is incorporated into at least one of two parts of a metathesis-catalyst system: a catalyst/monomer solution or an activator/monomer solution. The two parts are then combined in the mixing head of a reaction injection molding machine and injected into a mold where the reaction mixture rapidly sets up into a thermoset polymer with greater flexibility and impact strength than is found in the corresponding unplasticized poly(dicyclopentadiene).
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: November 27, 1984
    Assignee: Hercules Incorporated
    Inventor: Daniel W. Klosiewicz
  • Patent number: 4436858
    Abstract: Incorporation of an ester plasticizer having a solubility parameter from about 7.8 to about 10.2 (cal/cc).sup.1/2 increases the flexibility and impact strength of poly(dicyclopentadiene). In a preferred embodiment of the method for poly(dicyclopentadiene) synthesis, the plasticizer is incorporated into at least one or two parts of a metathesis-catalyst system: a catalyst/monomer solution or an activator/monomer solution. The two parts are then combined in the mixing head of a reaction injection molding machine and injected into a mold where the reaction mixture rapidly sets up into a thermoset polymer with greater flexibility and impact strength than is found in the corresponding unplasticized poly(dicyclopentadiene).
    Type: Grant
    Filed: May 14, 1982
    Date of Patent: March 13, 1984
    Assignee: Hercules Incorporated
    Inventor: Daniel W. Klosiewicz
  • Patent number: 4433090
    Abstract: An acrylamide polymer comprising acrylamide and a sufficient amount of cinnamic acid to substantially reduce the viscosity of the acrylamide polymer and solution.
    Type: Grant
    Filed: June 9, 1983
    Date of Patent: February 21, 1984
    Assignee: Monsanto Company
    Inventor: Donald N. Van Eenam
  • Patent number: 4394307
    Abstract: Improved nuclear track recording plastic compositions are provided which exhibit greatly decreased surface roughness when etched to produce visible tracks of energetic nuclear particles which have passed into and/or through said plastic. The improved compositions incorporate a small quantity of a phthalic acid ester into the major plastic component which is derived from the polymerization of monomeric di-ethylene glycol bis allyl carbonate. Di-substituted phthalic acid esters are preferred as the added component, with the further perference that the ester substituent has a chain length of 2 or more carbon atoms. The inclusion of the phthalic acid ester to an extent of from about 1-2% by weight of the plastic compositions is sufficient to drastically reduce the surface roughness ordinarily produced when the track recording plastic is contacted by etchants.
    Type: Grant
    Filed: February 18, 1981
    Date of Patent: July 19, 1983
    Inventor: Gregory Tarle
  • Patent number: 4338171
    Abstract: Coating compositions are provided which consist of a polymerizable ethylenically unsaturated material having included therein as a photoinitiator a di- or tetraester of 3,4,3',4'-benzophenone tetracarboxylic acid or a diester of 4,4'-benzophenone dicarboxylic acid.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: July 6, 1982
    Assignee: Gulf Oil Corporation
    Inventors: Walter P. Barie, Jr., Thomas F. Huemmer, Pallavoor R. Lakshmanan
  • Patent number: RE32459
    Abstract: An acrylamide polymer comprising acrylamide and a sufficient amount of cinnamic acid to substantially reduce the viscosity of the acrylamide polymer and solution.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: July 14, 1987
    Assignee: Akzo N.V.
    Inventor: Donald N. Van Eenam