Oxygen Atom Is Part Of An Ether Group Patents (Class 525/312)
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Patent number: 6312869Abstract: A chemically amplified positive resist composition contains (A) an organic solvent, (B) a base resin in the form of a polymer having at least one acid labile group and crosslinked within a molecule and/or between molecules with a crosslinking group having a C—O—C linkage, the polymer having a weight average molecular weight of 1,000-500,000, (C) a photoacid generator, (D) a basic compound, and (E) an aromatic compound having a group ≡C—COOH in a molecule. The composition has a high alkali dissolution contrast, high sensitivity and high resolution.Type: GrantFiled: June 12, 2000Date of Patent: November 6, 2001Assignee: Shin-Etsu Chemical, Co., Ltd.Inventors: Satoshi Watanabe, Osamu Watanabe, Tomoyoshi Furihata, Yoshihumi Takeda, Shigehiro Nagura, Toshinobu Ishihara, Tsuguo Yamaoka
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Patent number: 6300526Abstract: Hydro-2,2-difluoroalkylvinylethers having the formula CF2═CH—O—RA (I) wherein RA is a radical containing fluorine, optionally containing halogens such as Cl, Br, I, hydrogen, functional groups CM, COOR′, CON(R′)2, SO2OR′, m wherein R′ is a C1-C5 alkyl, RA being selected from the following: a linear or branched, saturated or unsaturated C2-C20 fluoroalkyl, or a saturated or unsaturated C4-C6 fluorinated cyclic group wherein optionally from 1 to 2 carbon atoms are substituted with oxygen atoms, or a linear, branched saturated or unsaturated, C3-C15 fluorooxyalkyl group, containing one or Core oxygen atoms.Type: GrantFiled: July 29, 1999Date of Patent: October 9, 2001Assignee: Austmont S.p.A.Inventors: Walter Navarrini, Antonio Russo
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Patent number: 6262181Abstract: This invention relates to a process for generating a organically soluble partially cross-linked acid labile polymer according to the present invention comprises the steps of providing a polymer with one or more monomer units, wherein at least one of the monomer units contain one or more pendant COOH or hydroxyl groups; and reacting said polymer with a polyvinyl ether in the presence of a acid catalyst to form links between at least two polymer chains. The resulting polymer can be used as a component in a photoresist formulation.Type: GrantFiled: December 22, 1999Date of Patent: July 17, 2001Assignee: Arch Specialty Chemicals, Inc.Inventors: Nageshwer Rao Bantu, Donald Frank Perry, Jacqueline Marie Marshall, Timothy Michael Holt
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Patent number: 6159653Abstract: The present invention provides a process for generating mixed acetal polymers by reacting a hydroxyl containing polymer or monomer with vinyl ether and alcohol in the presence of an acid catalyst. The process of this invention provides a new class of polymers based on mixed acetals which are prepared in-situ with one reaction. The mixed acetal polymers are inexpensive to synthesize and readily reproducible. The resulting mixed acetal polymer is blended with a photoacid generator and dissolved in a solvent to produce a chemically amplified resist composition. A process for forming a pattern comprises the steps of providing the chemically amplified resist composition, coating a substrate with the resist composition, imagewise exposing the resist coated substrate to actinic radiation, and forming a resist image by developing the resist coated substrate.Type: GrantFiled: April 14, 1998Date of Patent: December 12, 2000Assignee: Arch Specialty Chemicals, Inc.Inventors: Sanjay Malik, Andrew J. Blakeney, Lawrence Ferreira, Joseph J. Sizensky, Brian E. Maxwell
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Patent number: 6124405Abstract: Polymers having an average molecular weight M.sub.w (weight average) of 5,000 to 1,000,000 (measured by gel permeation chromatography), comprising structural repeating units of the formulae I-IV: ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 and w, x, y, and z are defined herein, are suitable as binders for DUV photoresists of high processing stability and flow resistance.Type: GrantFiled: May 19, 1999Date of Patent: September 26, 2000Assignee: Arch Specialty Chemicals, Inc.Inventors: Carl-Lorenz Mertesdorf, Hans-Thomas Schacht, Norbert Muenzel, Pasquale Alfred Falcigno
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Patent number: 6121371Abstract: A process is provided for the preparation of (co)polymer emulsions or suspensions from a full range of free radically (co)polymerizable monomers, wherein the (co)polymers exhibit the characteristics of "living" polymerization, including one or more of predictable molecular weights, narrow or controllable molecular weight distributions and a variety of polymer architectures, including the roles of surfactants, catalyst and ligands, several initiation methods, and methods for catalyst removal from the emulsions or suspensions made, and the (co)polymer emulsions and suspensions made thereby.Type: GrantFiled: July 31, 1998Date of Patent: September 19, 2000Assignee: Carnegie Mellon UniversityInventors: Krzysztof Matyjaszewski, Scott G. Gaynor, Jian Qiu, Mircea Teodorescu
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Patent number: 6114462Abstract: A chemically amplified positive resist composition contains (A) an organic solvent, (B) a base resin in the form of a polymer having at least one acid labile group and crosslinked within a molecule and/or between molecules with a crosslinking group having a C--O--C linkage, the polymer having a weight average molecular weight of 1,000-500,000, (C) a photoacid generator, (D) a basic compound, and (E) an aromatic compound having a group .tbd.C--COOH in a molecule. The composition has a high alkali dissolution contrast, high sensitivity and high resolution.Type: GrantFiled: April 30, 1999Date of Patent: September 5, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Satoshi Watanabe, Osamu Watanabe, Tomoyoshi Furihata, Yoshihumi Takeda, Shigehiro Nagura, Toshinobu Ishihara, Tsuguo Yamaoka
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Patent number: 6072006Abstract: This invention relates to a process for generating a organically soluble partially cross-linked acid labile polymer according to the present invention comprises the steps of providing a polymer with one or more monomer units, wherein at least one of the monomer units contain one or more pendant COOH or hydroxyl groups; and reacting said polymer with a polyvinyl ether in the presence of a acid catalyst to form links between at least two polymer chains. The resulting polymer can be used as a component in a photoresist formulation.Type: GrantFiled: November 6, 1998Date of Patent: June 6, 2000Assignee: Arch Specialty Chemicals, Inc.Inventors: Nageshwer Rao Bantu, Donald Frank Perry, Jacqueline Marie Marshall, Timothy Michael Holt
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Patent number: 6031019Abstract: Aqueous ink for ink-jet printing comprises an emulsion of fine polymer particles and contains at least one compound selected from an amino acid or a salt thereof and the like.Type: GrantFiled: February 4, 1998Date of Patent: February 29, 2000Assignee: Kao CorporationInventors: Takehiro Tsutsumi, Koji Azuma, Michitaka Sawada, Tadashi Sakuma, Kenji Kaida, Shigemi Wakabayashi, Tetsuya Ueno, Kuniyasu Kawabe
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Patent number: 5998501Abstract: A process for producing an aqueous ink for inkjet printing capable of giving an elevated print density of printed matters, being improved in fixability to the material to be printed, water resistance and improved storage stability and scarcely scorching onto a printer head. This process comprises dissolving a salt-forming group-having polymer and a hydrophobic dye in a water-insoluble organic solvent to obtain a solution, adding water and a neutralizing agent optionally together with a surfactant to the solution to ionize the salt-forming group of the polymer, emulsifying the resulting mixture, and removing out the solvent from the emulsion to obtain an ink containing an aqueous dispersion of the polymer particles in which the dye has been encompassed.Type: GrantFiled: February 2, 1998Date of Patent: December 7, 1999Assignee: Kao CorporationInventors: Tekehiro Tsutsumi, Koji Azuma, Michitaka Sawada
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Patent number: 5948868Abstract: Curing system for fluoroelastomers curable by peroxidic route which comprise iodine comprising as curing agent a bis-olefin having general formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, equal to or different from each other, are H or alkyl C.sub.1 -C.sub.5 ; Z is a linear or branched alkylenic or cycloalkylenic radical C.sub.1 -C.sub.18, optionally containing oxygen atoms, preferably at least partially fluorinated, or a (per)fluoropolyoxyalkylenic radical.Type: GrantFiled: October 18, 1996Date of Patent: September 7, 1999Assignee: Ausimont, S.P.A.Inventors: Margherita Albano, Claudio Pizzi, Ivan Wlassics, Vincenzo Arcella
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Patent number: 5942580Abstract: An acrylic rubber composition comprising a halogen-containing acrylic rubber, a vulcanizing agent and at least one unsaturated compound selected from the group consisting of (1) .alpha.-olefins having at least 4 carbon atoms, (2) carboxylic acid vinyl esters, (3) alkyl vinyl ethers, (4) lower alkyl cyclohexenes or cyclohexenecarboxylic acid caprolactone esters and (5) unsaturated dicarboxylic acid diesters can give vulcanization products having an improved compression set without any substantial deterioration of normal state physical properties and resistance to heat ageing of the vulcanization products, where the unsaturated compound gives off no unpleaseant odor without any skin irritation when vulcanized and without lowering the mold releasability.Type: GrantFiled: March 5, 1996Date of Patent: August 24, 1999Assignee: Nippon Mektron, LimitedInventors: Tamotsu Yoshida, Jun Okabe
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Patent number: 5929172Abstract: A conductive graft copolymer is provided comprised of a polymerized acrylic or methacrylic acid ester backbone having grafted thereon pendant polymeric sulfur, nitrogen or oxygen-containing heterocyclic moieties. The conductive graft copolymer is particularly useful as a pressure sensitive adhesive.Type: GrantFiled: March 20, 1997Date of Patent: July 27, 1999Assignee: Adhesives Research, Inc.Inventor: Michael J. Zajaczkowski
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Patent number: 5908899Abstract: A resin composition for sealing liquid crystal cells which contains as essential components a rubber-modified unsaturated compound obtained by grafting a monomer having at least one polymerizable ethylenically unsaturated bond in a molecule with at least one rubber selected from acrylic rubber, silicone rubber, urethane rubber and conjugated diene rubber, and a coupling agent, a filler and a photopolymerization initiator. The rubber contained in the rubber modified unsaturated compound has a particle diameter of 0.2-5 .mu.m and a number average molecular weight of 1000-100,000, and the rubber content in the compound is 0.5-45% by weight based on the rubber modified unsaturated compound.Type: GrantFiled: December 17, 1996Date of Patent: June 1, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Shuji Tahara, Shigeo Makino, Kenji Ito, Seiji Itami, Hiromi Shitakoji
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Patent number: 5902838Abstract: Cationically curable adhesives and sealants with increased viscosities and improved rheological control and good storage stability are prepared using a cationically curable monomer and a thickening polymer which is the alkylation reaction product of poly(4-hydroxystyrene) or poly(2-hydroxystyrene) with a compound RX where R is allyl, methallyl, crotyl or prenyl and X is Cl, Br or I. The cationically curable monomer suitably includes at least one alkenyloxystyrene monomer. Such thickened adhesives are useful as edge sealants for flat panel display devices. A-stage curing of the adhesive with UV irradiation allows for near ambient temperature fixturing of the device assemblies and B-stage thermal curing of the adhesive can be conducted at much lower temperatures than are needed for glass frit sealants. The B-stage cured products have thermal resistance, outgassing and substrate adhesion properties adequate for flat panel display devices.Type: GrantFiled: October 1, 1996Date of Patent: May 11, 1999Assignee: Loctite CorporationInventors: John G. Woods, Maria L. Masterson, Matthew P. Burdzy, Bernard M. Malofsky
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Patent number: 5869576Abstract: Relatively low molecular weight Olefin/CO copolymers are graft copolymerized with vinyl monomers by the exposure of a mixture of a dispersion of the two to high energy radiation such as .gamma. ray radiation. Styrene is an example of a monomer useful in forming the graft copolymer. The graft copolymers are useful as waterborne glues particularly in the preparation of wood composites.Type: GrantFiled: December 10, 1997Date of Patent: February 9, 1999Assignee: Shell Oil CompanyInventors: Carlton Edwin Ash, Narayana Mysore, Pui Kwan Wong
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Patent number: 5859160Abstract: A free radical curable composition that includes a free radical curable and a vinyl aromatic compound that is chemically different than the free radical curable component, wherein the vinyl aromatic compound is present in an amount sufficient to decelerate the cure rate of the free radical composition without adversely effecting completion of cure and the properties of the curable composition after it has cured. The composition is particularly useful as a two part adhesive that includes a free radical catalyst system and a diene elastomer.Type: GrantFiled: January 9, 1997Date of Patent: January 12, 1999Assignee: Lord CorporationInventors: Robin F. Righettini, Kirk J. Abbey
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Patent number: 5849808Abstract: A polymer which is insoluble in aqueous-alkaline developer solutions, and comprises structural units of the formula (I): ##STR1## in which R.sub.2 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.10 cycloalkyl, C.sub.5 -C.sub.14 aryl, C.sub.6 -C.sub.30 aralkyl, R.sub.3 is C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.10 cycloalkyl, C.sub.5 -C.sub.14 aryl, or C.sub.6 -C.sub.30 aralkyl, it being possible for the alkyl, cycloalkyl, aryl, or aralkyl groups to be substituted if desired by one or more hydroxyl groups or nitro groups or by one or more halogen atoms, and X is a k+1 valent organic radical, k being a number from 1 to 5, and 1 is a number from 0 to 4, in a quantity such that the cleavage products obtained by reaction with an acid are soluble in aqueous-alkaline developer solutions, is suitable as a binder for DUV photoresists of high processing stability, high contrast, and good resolution.Type: GrantFiled: April 19, 1996Date of Patent: December 15, 1998Assignee: Olin Microelectronic Chemicals, Inc.Inventors: Hans-Thomas Schacht, Norbert Muenzel
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Patent number: 5789487Abstract: The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architecture and narrow polydispersity index, in the presence of an initiating system comprising (i) an initiator having a radically transferrable atom or group, (ii) a transition metal compound, and (iii) a ligand; the present invention is also directed to the synthesis of a macromolecule having at least two halogen groups which can be used as a macroinitiator component (i) to subsequently form a block or graft copolymer by an atom or group transfer radical polymerization process; the present invention is also directed to a process of atom or group transfer radical polymerization for the synthesis of a branched or hyperbranched polymer; in addition, the present invention is directed to a process of atom or group transfer radical polymerization for the synthesis of a maType: GrantFiled: July 10, 1996Date of Patent: August 4, 1998Assignee: Carnegie-Mellon UniversityInventors: Krzysztof Matyjaszewski, Simion Coca, Scott G. Gaynor, Yoshiki Nakagawa, Seong Mu Jo
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Patent number: 5777036Abstract: Particulate graft copolymers A) are composed ofa.sub.1) from 5 to 70% by weight, based on A), of a grafting base having a glass transition temperature of less than 10.degree. C. and based ona.sub.11) from 50 to 99.94% by weight, based on a.sub.1), of at least one alkyl acrylate where the alkyl radical is of 1 to 30 carbon atoms,a.sub.12) from 0 to 49.9% by weight, based on a.sub.1), of a further monounsaturated monomer copolymerizable with b.sub.11) anda.sub.13) from 0.01 to 5% by weight, based on a.sub.1), of polyfunctional crosslinking monomers,a.sub.2) from 20 to 85% by weight, based on A), of a stage polymerized in the presence of component a.sub.1) and comprisinga.sub.21) from 95 to 100% by weight, based on a.sub.2), of at least one monomer having a refractive index n.sub.D.sup.20 of more than 1.51 anda.sub.22) from 0 to 5% by weight, based on a.sub.2), of a polyfunctional, crosslinking monomer anda.sub.Type: GrantFiled: April 15, 1997Date of Patent: July 7, 1998Assignee: BASF AktiengesellschaftInventors: Wolfgang Fischer, Jurgen Koch, Graham Edmund McKee
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Patent number: 5747597Abstract: The present invention provides a curable resin composition comprising: a polymer (A) containing a polymerizable unsaturated bonding group; and a polymerizable unsaturated monomer (B). Polymerizable unsaturated monomer (B) comprises as an essential component an oligoalkyl(C.sub.2 -C.sub.4)ether(n=2-15)-monoalkoxy(C.sub.1 -C.sub.18)-(meth)acrylate. This curable resin composition according to the present invention displays superior adherence, air-drying, water resistance, and storage stability properties in addition to a reduced odor.Type: GrantFiled: August 12, 1996Date of Patent: May 5, 1998Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Yukiko Fujita, Shinya Ueno, Yoko Kawasaki, Kumiko Fukakusa, Hidefumi Matsuya, Tomomasa Mitani, Akira Komori, Mika Matsumura
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Patent number: 5717034Abstract: In accordance with the present invention, it has been discovered that perfluorinated hydrocarbon polymers can be used as fillers for the preparation of adhesive formulations having excellent dielectric properties, i.e., very low conductivities. Invention compositions display excellent rheological properties, in addition to low dielectric constants. Invention formulations can be used for a variety of purposes, such as, for example, for the preparation of filled adhesive formulations with a reduced propensity to settle out, excellent dispensing characteristics due to the thixotropic nature thereof, and the like.Type: GrantFiled: July 29, 1996Date of Patent: February 10, 1998Assignee: Quantum Materials, Inc.Inventors: Stephen M. Dershem, Deborah D. Forray
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Patent number: 5705559Abstract: Disclosed is a process for preparing crosslinked resin particles which comprises dispersing a resin having both a water-dispersible function and a self-crosslinkable function in one molecule in an aqueous medium and then three-dimensionally crosslinking.Type: GrantFiled: February 21, 1995Date of Patent: January 6, 1998Assignee: Nippon Paint Co., Ltd.Inventors: Hiroyuki Sakamoto, Kenshiro Tobinaga, Yasuyuki Tsuchiya, Hisaichi Muramoto, Yusuke Ninomiya, Keizou Ishii, Shinichi Ishikura
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Patent number: 5698637Abstract: A method for modifying polyolefins by grafting with a carboxylic acid, carboxylic acid anhydride or other functionalized monomer in the presence of two additional comonomers, one being an aliphatic diolefin and the other an aromatic vinyl or (meth)acrylate monomer.Type: GrantFiled: June 30, 1995Date of Patent: December 16, 1997Assignee: Borealis Holding A/SInventor: Jari Aarila
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Patent number: 5677386Abstract: The present invention provides a process for the capping of a living polymer with a substituted or unsubstituted diphenyl alkylene. Diphenyl alkylene is defined to also include substituted or unsubstituted .alpha.-methoxystyrene, trans-stilbene, 1-isopropenylnapthalene and 2,4-dimethyl-.alpha.-methylstyrene.Type: GrantFiled: March 24, 1995Date of Patent: October 14, 1997Assignee: University of Massachusetts LowellInventor: Rudolf Faust
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Patent number: 5665518Abstract: The present invention provides a vinylmonomer represented with the following general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group, R.sup.2 represents a dihydric, bridged cyclic hydrocarbon group having a carbon number in the range of 7 to 13 both inclusive, R.sup.3 represents a group to be decomposed by acid or a hydrogen atom, X represents an alkylene group or a coupling group composed of an oxygen-carbon bond, and Y represents an alkylene group or a coupling group composed of a carbon-carbon bond. A photoresist obtained by polymerizing a monomer in accordance with the invention has a high transparency to FUV having a wavelength of at greatest 220 nm, high sensitivity and resolution to FUV, and a high dry etching resistance, and hence is suitable for exposure light such as FUV having a wavelength of at greatest 220 nm and, in particular, ArF excimer laser.Type: GrantFiled: January 19, 1996Date of Patent: September 9, 1997Assignee: NEC CorporationInventors: Katsumi Maeda, Kaichiro Nakano, Takeshi Ohfuji, Etsuo Hasegawa
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Patent number: 5663260Abstract: A process for preparing hyperbranched polymers from AB monomers and C monomers Using a self-constructing approach is disclosed along with the hyperbranched polymers of a living-like character produced by such process.Type: GrantFiled: November 8, 1994Date of Patent: September 2, 1997Assignee: Cornell Research Foundation, Inc.Inventors: Jean M.J. Frechet, Sadahito Aoshima
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Patent number: 5658708Abstract: An image recording material is disclosed, comprising a radiant ray-absorbing material, a compound having at least two enol ether groups represented by formula (I) and an alkali-soluble resin: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 maybe the same or different, each represents a hydrogen atom, an alkyl group or an aryl group, or any two of them may form a saturated or unsaturated olefinic ring by combining with each other; and a method for preparing the above image recording material is disclosed.Type: GrantFiled: February 8, 1996Date of Patent: August 19, 1997Assignee: Fuji Photo Film Co., Ltd.Inventor: Syunichi Kondo
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Patent number: 5618888Abstract: A process for preparing hollow polymer particles which comprises a seed-forming step for polymerizing a monomer mixture of an acid monomer having a carboxylic acid group and a non-ionic hydrophilic monomer in the presence of a polymerization initiator; a core-forming step for preparing a core, which can be swollen with an alkali, by polymerizing the monomer mixture of an acid monomer having a carboxylic acid group, a non-ionic hydrophilic monomer and a cross-linking agent to the seed latex; a shell-forming step in which a hydrophobic shell is formed on the hydrophilic core; and an alkali-swelling step.Type: GrantFiled: June 6, 1995Date of Patent: April 8, 1997Assignee: LG Cehmical Ltd.Inventors: Su B. Choi, Tae H. Jang, Jin N. Yoo, Chan H. Lee
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Patent number: 5578677Abstract: A thermosetting composition which comprises:(D) a self-crosslinking compound having in the molecule (a) one or more functional groups of the formula (2): ##STR1## wherein R.sup.5, R.sup.6 and R.sup.7 are each hydrogen or an organic group of 1 to 18 carbons, R.sup.8 is an organic group of 1 to 18 carbons, Y.sup.2 is oxygen or sulfur, or R.sup.7 and R.sup.8 are bonded with each other to form a heterocyclic structure which comprises Y.sup.2 as the heteroatom component; and (b) one or more reactive functional groups which can form a chemical bond with carboxyl functional groups which are regenerated from (a) by heating; (C) optionally, a thermal latent acid catalyst which is activated during curing of the composition by heating; (A) optionally, a compound having in the molecule two or more functional groups of the formula (1): ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are each hydrogen or an organic group of 1 to 18 carbons, R.sup.4 is an organic group of 1 to 18 carbons, Y.sup.1 is oxygen or sulfur, or R.Type: GrantFiled: December 27, 1995Date of Patent: November 26, 1996Assignee: Nippon Oil and Fats Company, LimitedInventors: Masahiro Ishidoya, Kishio Shibato, Keiji Komoto, Kenji Shibamoto, Mitsuyuki Mashita, Osamu Ohe
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Patent number: 5576393Abstract: Polymer particles which are substantially spherical and have protrusions on the surface thereof, with such a particle size distribution that the volume mean diameter dv thereof is 1.ltoreq.dv.ltoreq.15 (.mu.m), and the ratio of the volume mean diameter dv to the number mean diameter dn thereof, that is, dv/dn, is 1.ltoreq.dv/dn.ltoreq.1.2, are prepared, and used as a component for a toner for use in electrophotography.Type: GrantFiled: May 26, 1995Date of Patent: November 19, 1996Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Yamashita, Hiromitsu Kawase, Keiko Shiraishi
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Patent number: 5571869Abstract: Grafted polymer particles are prepared by a free-radical addition polymerization mechanism using a flame produced by igniting a mixture of a combustible gas and an oxidant to heat at least a portion of the surface of a solid polymer particle to produce free-radicals thereon. At least one polymerizable ethylenically unsaturated monomer is contacted and reacted with the free-radicals formed on the surface of the polymer to form a graft thereon.Type: GrantFiled: April 25, 1995Date of Patent: November 5, 1996Assignee: The University of AkronInventors: Sunggyu Lee, Ramesh Rengarajan
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Patent number: 5559192Abstract: An air curing polymer composition is disclosed which contains acetoacetate functional polymer and an autoxidizable material. The composition cures on exposure to oxygen. One pack stable ambient curing compositions and a method of stabilizing acetoacetate functional groups to prevent hydrolysis are also disclosed.Type: GrantFiled: June 6, 1995Date of Patent: September 24, 1996Assignee: Rohm and Haas CompanyInventors: Daniel A. Bors, Alvin C. Lavoie, William D. Emmons
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Patent number: 5552486Abstract: Propoxylated allyl alcohol homopolymers and copolymers of allyl alcohol and propoxylated allyl alcohol are disclosed. The polymers are soluble in many organic solvents, making them useful in a variety of applications, including polyesters, polyurethanes, alkyds, uralkyds, polyamines, acrylates, crosslinked polymeric resins, and polymer blends.Type: GrantFiled: May 25, 1995Date of Patent: September 3, 1996Assignee: ARCO Chemical Technology, L.P.Inventors: Shao-Hua Guo, Robert G. Gastinger
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Patent number: 5549932Abstract: Thermosetting composition comprises a compound having in the molecule two or more carboxyl groups blocked by a vinyl ether compound, a vinyl thioether compound or a hetero compound having a vinyl type double bond and oxygen or sulfur as the hetero atom, a compound having two or more reactive functional groups which can form a chemical bond with the blocked carboxyl compound by heating, a specific vinyl ether or vinyl thioether and a thermal latent acid catalyst. The blocked carboxy group of the first compound and the reactive functional group of the second compound may be comprised in the same molecule. The thermosetting composition gives cured products having excellent chemical properties, physical properties, weathering resistant and storage stability and is advantageously utilized for coating compositions, ink, adhesive and molded plastics.Type: GrantFiled: March 9, 1995Date of Patent: August 27, 1996Assignee: Nippon Oil and Fats Company, LimitedInventors: Masahiro Ishidoya, Kishio Shibato, Keiji Komoto, Kenji Shibamoto, Mitsuyuki Mashita, Osamu Ohe
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Patent number: 5516839Abstract: A thermal latent compound which is prepared by a reaction of a polycarboxyl compound having two or more carboxyl groups in the molecule, having an acid equivalent of not more than 1000 g/mole and a number average molecular weight of not more than 4000, with a monovinyl ether compound, wherein at least two carboxyl groups are transformed into a functional group of the formula (1): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are each a hydrogen atom or an organic group of 1 to 18 carbon atoms, R.sup.4 is an organic group of 1 to 18 carbon atoms, Y.sup.1 is an oxygen atom or R.sup.3 and R.sup.4 are bonded together to form a heterocyclic with Y.sup.1 as a heteroatom.Type: GrantFiled: June 15, 1994Date of Patent: May 14, 1996Assignee: Nippon Oil and Fats Company, LimitedInventors: Masahiro Ishidoya, Kishio Shibato, Keiji Komoto, Kenji Shibamoto, Mitsuyuki Mashita, Osamu Ohe
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Patent number: 5514754Abstract: A method of enhancing the water absorbance of and increasing the particle size of fine water absorbent cross-linked polyacrylic polymer particles includes impregnating the polymer particles with an impregnating monomer solution containing an acrylic monomer, with or without a cross-linking agent for the acrylic monomer. The solution is impregnated into the resin in a weight ratio of cross-linked polyacrylic polymer, dry basis, to impregnating monomer solution in the range of about 1:1 to about 1:10; and subjecting the impregnated polymer to conditions, such as increased temperature, e.g., 100.degree. C.-150.degree. C. to polymerize the impregnated monomer, within the cross-linked polymer particles, to form a cross-linked polyacrylic polymer having enhanced water absorbance and increased particle size.Type: GrantFiled: September 28, 1994Date of Patent: May 7, 1996Assignee: American Colloid CompanyInventors: John A. Henderson, Anthony S. Tomlin, David M. Lucas
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Patent number: 5508367Abstract: A water-soluble or water-dispersible pressure sensitive adhesive is provided comprised of a normally-tacky copolymer of a water-soluble base monomer and a water-soluble or water-dispersible macromer. In a preferred embodiment, the water-soluble base monomer comprises a carboxylic hydroxyalkyl ester monomer and the water-soluble macromer comprises an ethoxylated or propoxylated hydroxyalkyl (meth)acrylate.Type: GrantFiled: March 7, 1995Date of Patent: April 16, 1996Assignee: Adhesives Research, Inc.Inventor: Michael J. Zajaczkowski
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Patent number: 5502086Abstract: A water-absorptive contact lens obtained by saponification of a copolymer composed essentially of (A) from 1 to 30% by weight of a (meth)acrylate polymer having at least one polymerizable group per molecule on an average obtained by copolymerizing (a) an alkyl (meth)acrylate and (b) a monomer having at least two polymerizable groups per molecule, as the main components; (B) from 45 to 95% by weight of a fatty acid vinyl ester; (C) from 0.02 to 10% by weight of a crosslinking agent which is not decomposable by saponification; and (D) from 0.1 to 20% by weight of a crosslinking agent which is decomposable by saponification.Type: GrantFiled: June 20, 1994Date of Patent: March 26, 1996Assignee: Menicon Co., Ltd.Inventors: Haruyuki Hiratani, Keiji Sugimoto
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Patent number: 5494508Abstract: A method is disclosed for improving the erasability of erasable marking compositions, while maintaining the opacity of the coating and without producing burnishing, by incorporating into the compositions voided latex particles having a shell polymerized from either:(1) at least about 25% by weight, based on the weight of the shell, of a crosslinking comonomer;(2) at least about 5% by weight, based on the weight of the shell, of a crosslinking comonomer, when at least about 50% by weight of methyl methacrylate is used as a comonomer in the shell.An improved liquid marking composition is also disclosed.Type: GrantFiled: May 24, 1995Date of Patent: February 27, 1996Assignee: Rohm and Haas CompanyInventor: Martin Vogel
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Patent number: 5486572Abstract: A process for preparing propylene block copolymers, comprising a preceding polymerization step in which a crystalline homopolymer of propylene, or a propylene-ethylene copolymer containing 7 wt. % or less of ethylene is produced in the presence of a catalyst comprising the following components (A) and (B), and a succeeding polymerization step in which the polymerization is continued in the presence of at least part of the homopolymer or copolymer, and of the following component (C) further added to give a copolymer with a polymerization ratio (weight ratio) of propylene to ethylene of from 0/100 to 90/10; the polymerization amount at the preceding polymerization step being from 30 to 95 wt.Type: GrantFiled: December 1, 1994Date of Patent: January 23, 1996Assignee: Mitsubishi Chemical CorporationInventors: Takashi Fujita, Toshihiko Sugano
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Patent number: 5475061Abstract: There are disclosed a styrenic copolymer which comprises at least one structural unit represented by the general formula (I) ##STR1## and a structural unit represented by the general formula (II) ##STR2## or a structural unit represented by the general formula (IX) ##STR3## wherein the symbols are each as previously defined in the specification, the structural unit (II) or (IX) being contained in an amount of 0.01 to 99.9 mol %; and a process for the production of the above copolymer.The above styrenic copolymer has a high degree of syndiotactic configuration in the stereoregularity of the main chain of the structural unit (I) as well as adhesivity and compatibility with a resin of a different type.Type: GrantFiled: June 13, 1994Date of Patent: December 12, 1995Assignee: Idemitsu Kosan Co., Ltd.Inventors: Shuji Machida, Toshinori Tazaki
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Patent number: 5451641Abstract: Multi-stage polymer particles comprising at least one hydrophobically-modified, ionically-soluble polymer stage polymerized from a) hydrophobic monomer, b) ethylenically-unsaturated, ionizable monomer, c) non-ionic, ethylenically-unsaturated monomer and optionally d) multi-functional compound are improved thickeners.Type: GrantFiled: October 20, 1993Date of Patent: September 19, 1995Assignee: Rohm and Haas CompanyInventors: Eric K. Eisenhart, Dennis P. Lorah, Susan R. Gill, Eric A. Johnson
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Patent number: 5447560Abstract: A method is disclosed for improving the erasability of erasable marking compositions, while maintaining the opacity of the coating and without producing burnishing, by incorporating into the compositions voided latex particles having a shell polymerized from either:(1) at least about 25% by weight, based on the weight of the shell, of a crosslinking comonomer;(2) at least about 5% by weight, based on the weight of the shell, of a crosslinking comonomer, when at least about 50% by weight of methyl methacrylate is used as a comonomer in the shell.An improved liquid marking composition is also disclosed.Type: GrantFiled: March 3, 1994Date of Patent: September 5, 1995Assignee: Rohn and Haas CompanyInventor: Martin Vogel
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Patent number: 5426133Abstract: 1. A water-absorptive contact lens obtained by saponification of a copolymer composed essentially of:(A) from 1 to 30% by weight of a (meth)acrylate polymer having at least one polymerizable group per molecule on an average obtained by copolymerizing (a) an alkyl (meth)acrylate and (b) a monomer having at least two polymerizable groups per molecule, as the main components;(B) from 1 to 10% by weight of a vinyl monomer selected from the group consisting of maleic acid esters and N-vinyl lactams;(C) from 50 to 98% by weight of a fatty acid vinyl ester; and(D) from 0.02 to 10% by weight of a cross linking monomer.Type: GrantFiled: September 10, 1993Date of Patent: June 20, 1995Assignee: Menicon Co., Ltd.Inventors: Yasuhito Hishida, Masanori Kadoya, Keiji Sugimoto, Tsuyoshi Watanabe, Noriko Iwata
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Patent number: 5401427Abstract: Degraded molecular weight copolymers of ethylene alpha-olefin are provided. The ethylene alpha-olefin copolymers, before degradation, are characterized by having a narrow molecular weight distribution and are comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains. The degraded copolymers are useful as viscosity index improvers for oils.Type: GrantFiled: June 18, 1993Date of Patent: March 28, 1995Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Mark J. Struglinski
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Patent number: 5399621Abstract: The invention relates to the preparation of a graft copolymer latex of core/shell dispersion particles having improved phase binding between core and shell in a two-stage emulsion polymerization process, hydroperoxide groups being produced at the particle surface of the grafting base prior to grafting by hydrogen peroxide treatment.Type: GrantFiled: December 2, 1993Date of Patent: March 21, 1995Assignee: Wacker-Chemie GmbHInventor: Klaus Kohlhammer
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Patent number: 5385982Abstract: Refrigerator and freezer liners are molded from rubber modified graft copolymers of acrylonitrile and methyl acrylate. These polymers comprise 14 to 30 percent by weight of a butadiene-acrylonitrile elastomer rubber. Further these polymers show excellent impact strength at low temperatures and are resistant to solvents used as blowing agents for refrigerator and freezer insulation.Type: GrantFiled: January 21, 1994Date of Patent: January 31, 1995Assignee: The Standard Oil CompanyInventor: Joseph P. McCaul
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Patent number: 5374681Abstract: Polyacetals useful as reduced-phosphate or phosphate-free detergent and cleaner additives are obtainable by cationically initiated polyaddition of(a) divinyl ethers and(b) dihydroxy compounds and also, optionally,(c) monohydroxy compoundsand have K values of from 8 to 100.Type: GrantFiled: January 5, 1994Date of Patent: December 20, 1994Assignee: BASF AktiengesellschaftInventors: Matthias Kroner, Heinrich Hartmann, Richard Baur, Volker Schwendemann, Hans-Ulrich Jaeger, Johannes Perner
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Patent number: 5369183Abstract: A composite for moldings having the high bending elastic modulus and the high bending strength, comprising a thermoplastic resin and a polymerizable monomer which is a multifunctional polymerizable monomer having an alicyclic strucure unit or a mixture consisting of a multifunctional polymerizable monomer having an alicyclic strucure unit and a monofunctional polymerizable monomer having at least two alicyclic structure units, is prepared by compounding them. Also, a composite for moldings having the high bending elastic modulus and the high bending strength, comprising a vinyl chloride resin, a (meth)acrylate monomer which is a multifunctional (meth)acrylate or a mixture consisting of a multifunctional (meth)acrylate and a monofunctional (meth)acrylate, and a polymerization initiator. The composite has good workability. Further, an unfluid precursor for moldings is prepared by heating the composite.Type: GrantFiled: October 5, 1990Date of Patent: November 29, 1994Assignee: Sanyo Chemical Industries, Ltd.Inventors: Masashi Okada, Tetsuo Maeda, Kenji Nakamura, Kenichi Hibino