Imide Monomer Patents (Class 526/262)
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Patent number: 5395731Abstract: Copolymeric mordant materials containing recurring units according to the following formula are disclosed: ##STR1## In such copolymers, each of R.sup.1, R.sup.2 and R.sup.3 can independently be alkyl; substituted-alkyl; cycloalkyl; aryl; aralkyl; alkaryl; or at least two of R.sup.1, R.sup.2 and R.sup.3, together with the quaternary nitrogen atom to which they are bonded, can complete a saturated or unsaturated, substituted or unsubstituted nitrogen-containing heterocyclic ring; X is an anion; R.sup.4 is hydrogen or alkyl (e.g. methyl). The pendent "b" group contain hydrogen-bonding sites for promotion of self-associated aggregation and ring unsaturation for photocyclization and control of physical properties (e.g., water insensitivity) of the image-receiving layer. The copolymeric mordant materials can be utilized as image-receiving layers in photographic products and processes of the diffusion transfer type.Type: GrantFiled: May 13, 1994Date of Patent: March 7, 1995Assignee: Polaroid CorporationInventors: J. Michael Grasshoff, Lloyd D. Taylor, John C. Warner
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Patent number: 5393803Abstract: A maleimide polymer comprises units derived from a maleimide derivative represented by the following general formula (I): ##STR1## where R.sup.1 is a hydrogen atom or a methyl group, and R.sup.2 is an alkyl, alkenyl or aryl group, each of which groups is substituted by at least one organosiloxane group or fluorine atom, or comprises a copolymer of (1) a maleimide derivative represented by the formula (I) but in which R.sup.2 may be hydrogen or any optionally substituted aliphatic hydrocarbon or aryl group with (2) an alkyl or fluoroalkyl methacrylate or an organosiloxy styrene- or organosiloxy-(meth)acrylic acid derivative.The polymer material may be formulated into contact lenses high in oxygen permeability and having good mechanical properties.Type: GrantFiled: March 12, 1993Date of Patent: February 28, 1995Inventors: Teiji Kawano, Mitsuru Yokota
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Patent number: 5393825Abstract: This invention relates to a continuous film, coating, membrane or extruded filament of a crosslinked vinyl lactam polymer having excellent substrate adhesion, a glass transition temperature (Tg) above 150.degree. C. and water repellent properties. The invention also relates to the method of preparing and using filaments, coatings and membranes of said crosslinked polymeric product.Type: GrantFiled: May 13, 1994Date of Patent: February 28, 1995Assignee: ISP Investments Inc.Inventors: Susan Y. Tseng, Philip F. Wolf, William J. Burlant
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Patent number: 5393853Abstract: Hydrogels presented in the form of pellets which are capable of regulating, without dissolving, any pH of an aqueous solution so as to convert it to a pH of 7. These pellets can be removed from the solution at any time without this modifying the pH, and once washed, can be used again. The velocity of buffering depends on the initial pH and can be controlled by modifying the mass and the composition of the pellets. They are obtained by copolymerization of a vinyl-heterocyclic comonomer and a divinyl comonomer in an aqueous solution at a temperature of close to 60.degree. C., in an inert atmosphere. By adjusting the proportion of crosslinking agent and the concentrations of comonomers, the crosslinking of the hydrogel is regulated in accordance with the intended use of the product.Type: GrantFiled: March 29, 1993Date of Patent: February 28, 1995Assignee: Universidad Nacional de Educacion A DistanciaInventors: Ma Rosa Gomez Anton, Ines F. de Pierola, Elena Morales Lujan, Ma Jesus Molina Lorenzo
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Patent number: 5393343Abstract: An improved hydraulic cement and resultant hydraulic cement composition having an imidized acrylic polymer uniformly distributed therein.Type: GrantFiled: September 29, 1993Date of Patent: February 28, 1995Assignee: W. R. Grace & Co.-Conn.Inventors: David C. Darwin, Ellis M. Gartner, Byong-Wa Chun, Hideo Koyata, Lawrence L. Kuo
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Patent number: 5391671Abstract: A styrene copolymer which comprises a styrene repeating unit (a) represented by the general formula (I): ##STR1## and an acrylonitrile repeating unit (b) represented by the general formula (II-(b)): ##STR2## unsaturated carboxylic acid or its ester repeating unit (c) represented by the general formula (II-(c)): ##STR3## or maleimide or N-substituted maleimide (d) represented by the general formula (II-(d)): ##STR4## (in the formula, symbols are the same as defined in the specification) wherein stereoregularity of the styrene repeating unit (a) chain is a high degree of syndiotactic configuration is disclosed.Type: GrantFiled: July 9, 1993Date of Patent: February 21, 1995Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshinori Tazaki, Masahiko Kuramoto
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Patent number: 5391665Abstract: There are provided a process for obtaining a polymer having hydroxyl groups at both terminals easily and with cheap cost and excellent efficiency from a wide variety of vinyl-based compounds, a composition containing said polymer and its use, and a polymer derived from said composition and its use.The polymerization reaction of a vinyl-based monomer (b) is carried out by using a radical polymerization initiator (c) in the presence of a compound (a) represented by the general formula:HO--A--(S).sub.x --B--OH (I)and, a polymer having hydroxyl groups at both terminals is obtained under conditions that, in the above reaction, any compound other than (a), (b) and (c) is not practically used and the compound (a) always exists in 50 mole times or more of the initiator (c) in the course of reaction in a reactor; and either a composition containing this polymer or a polymer derived from this composition is used.Type: GrantFiled: April 2, 1993Date of Patent: February 21, 1995Assignee: Nippon Shokubai Co., Ltd.Inventors: Toshiaki Matsunaga, Kazuo Takei, Taketo Toba, Hiroyuki Ikeuchi, Fumihide Tamura
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Patent number: 5378765Abstract: A polymer useful for preparing shaped articles comprises essentially repeat units of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or methyl, andR.sup.3 is C.sub.6 -C.sub.14 -aryl, which may be monosubstituted, disubstituted or trisubstituted by radicals selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen,and is obtainable by reacting a polymer based on C.sub.1 -C.sub.20 -alkyl esters of metharcylic acid or of arcylic acid or mixtures of such esters with an aromatic amine of the general formula IIR.sup.3 NH.sub.2 IIin the presence of an amine having a pK.sub.b value .ltoreq.9.Type: GrantFiled: November 12, 1993Date of Patent: January 3, 1995Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 5373075Abstract: An adhesive composition capable of post-cure expansion comprising a multifunctional (meth)acrylate and a maleimide capable of effectuating expansion upon post-cure. A homogeneous mixture of a monomer and maleimide are subjected to a first cure heat stage wherein a rigid partially-cured plastic is formed and a post-cure heart stage to effectuate permanent expansion of the cured adhesive composition.Type: GrantFiled: February 1, 1994Date of Patent: December 13, 1994Assignee: Loctite CorporationInventors: Eerik Maandi, Richard D. Rich
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Patent number: 5373065Abstract: A process for producing a novel formamide group-containing copolymer, or a salt thereof, which can be used as a high-molecular weight amino reagent, a starting material for functional high-molecular weight compounds, a starting material for adhesives, a polymer compatibilizer, a resin modifier, etc.Type: GrantFiled: November 9, 1993Date of Patent: December 13, 1994Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Naoki Kitazawa, Hiroshi Hotta, Yasuhisa Sugita, Katsutoshi Ohta
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Patent number: 5371173Abstract: The synthesis of a nonlinear chromophoric co-monomer 3,5-diamino-4'-nitrodiphenylamine and use as a reactive component in combination with a bismaleimide monomer in a NLO-active polyimide matrix is disclosed. After concurrent corona or contact poling and thermal polymerization, thin films of these chromophoric polyimides exhibit high second harmonic generation efficiencies and high DSC-determined glass transition temperatures. These poled polyimides also exhibit excellent SHG temporal stability, retaining 85-90% of the initial second harmonic efficiency after more than one month in air at 85.degree. C.Type: GrantFiled: November 25, 1992Date of Patent: December 6, 1994Assignee: Northwestern UniversityInventors: Tobin J. Marks, Michael A. Hubbard, Jiann T. Lin
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Patent number: 5369200Abstract: Polymers having a molecular weight (weight average) M.sub.w from 10.sup.3 to 10.sup.6, comprising recurring structural units of the formulae (I), (IIa) and (IIb) ##STR1## in which R.sub.1 is hydrogen or methyl, Y is a direct bond or a divalent radical of the formula (III) ##STR2## in which Z is a C.sub.1 -C.sub.6 alkylene group bound to the phenyl nucleus,OR.sub.2 is an acid-cleavable radical,in which R.sub.2 is C.sub.4 -C.sub.10 tert-alkyl, allyl, cyclohex-2-enyl, C.sub.6 -C.sub.14 aryl or C.sub.7 -C.sub.16 aralkyl which are unsubstituted or mono- or poly-substituted by C.sub.1 -C.sub.6 alkyl groups, C.sub.1 -C.sub.6 alkoxy groups or halogen atoms, trialkylsilyl or a group of the formulae (IV)-(VII) ##STR3## in which R.sub.8 is C.sub.1 -C.sub.6 alkyl, or C.sub.6 -C.sub.14 aryl or C.sub.7 -C.sub.16 aralkyl which are unsubstituted or mono- or poly-substituted by C.sub.1 -C.sub.6 alkyl groups, C.sub.1 -C.sub.6 alkoxy groups or halogen atoms,R.sub.3 and R.sub.4 independently of one another are hydrogen, C.sub.Type: GrantFiled: December 3, 1993Date of Patent: November 29, 1994Assignees: Ciba-Geigy AG, OCG Microelectronics, Inc.Inventors: Ulrich Schadeli, Norbert Munzel
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Patent number: 5369186Abstract: Disclosed are polymers and copolymers of CH.sub.2 .dbd.CHR alpha olefins where R is hydrogen or a 1-6 carbon atom alkyl radical, containing in the chain from 0.1 to 40 mole % of monomeric units ##STR1## where X is selected from the group consisting of (CH.sub.2).sub.r CH.sub.2 CH.sub.2 Y ##STR2## where r=0-10, Y is a halogen atom, R.sup.1 is a hydrocarbon radical with 1-18 carbon atoms.Type: GrantFiled: November 12, 1991Date of Patent: November 29, 1994Assignee: Himont IncorporatedInventors: Maurizio Galimberti, Umberto Giannini, Romano Mazzocchi, Enrico Albizzati, Umberto Zucchini
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Patent number: 5369198Abstract: Copolymers which are composed essentially of the structural elements ##STR1## and, if necessary, ##STR2## The copolymers can be employed as dispersing agents for inorganic or organic substances, especially as a plasticiser for hydraulic binders.Type: GrantFiled: February 1, 1994Date of Patent: November 29, 1994Assignees: Chemie Linz Gesellschaft m.b.H, Holderchem Holding AGInventors: Gerhard Albrecht, Hubert Leitner, Rudolf Lindenberger, Richard Siedl, Christian Werenka, Willi Suter
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Patent number: 5364700Abstract: Described herein are novel rubber modified bismaleimide resins and prepregable resin compositions comprising these bismaleimides and one or more liquid co-reactants and optionally, one or more other additives.Type: GrantFiled: December 27, 1985Date of Patent: November 15, 1994Assignee: Amoco CorporationInventor: Linda A. Domeier
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Patent number: 5360882Abstract: Eutectic compositions of vinyl caprolactam (VCL) and divinyl imidazolidone (DVI) which are liquids at room temperature are described. These compositions are useful as reactive diluents in curable coating formulations.Type: GrantFiled: February 4, 1994Date of Patent: November 1, 1994Assignee: ISP Investments Inc.Inventors: James A. Dougherty, Donald J. Shugard, Lowell R. Anderson
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Patent number: 5359020Abstract: Compositions comprisingA) compounds of formula I ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are identical or different and each is hydrogen or methyl, and X is a divalent organic radical comprising from 2 to 60 carbon atoms,B) compounds of formula II, III or IV ##STR2## wherein each of R.sub.11, R.sub.12 and R.sub.13, independently of the others, is a hydrogen atom or a C.sub.3 -C.sub.10 alkenyl group, at least one of the radicals R.sub.11 to R.sub.13 being an alkenyl group, ##STR3## wherein Q is a direct bond, methylene, 2,2-propylidene, --CO--, --O--, --S--, --SO-- or --SO.sub.2 -- and each of R.sub.14, R.sub.15, R.sub.16 and R.sub.17, independently of the others, is a hydrogen atom or a C.sub.3 -C.sub.10 alkenyl group, at least one of the radicals R.sub.14 to R.sub.17 being an alkenyl group, or ##STR4## wherein each of R.sub.18, R.sub.19, R.sub.20, R.sub.21, R.sub.22 and R.sub.23, independently of the others, is a hydrogen atom, C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.Type: GrantFiled: May 16, 1991Date of Patent: October 25, 1994Assignee: Ciba-Geigy CorporationInventors: Rudolf Brunner, Rene Huwyler, Andreas Kramer
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Patent number: 5359019Abstract: Monomers having at least two reactive ethylenically unsaturated sites may be polymerized via a free-radical reaction in the presence of a polyol to produce a dispersant useful in preparing polymer polyols that find uses as coreactants to produce polyurethane foams. The monomers include, but are not limited to, polyethylenically unsaturated maleimides and acrylates. The dispersants prepared in this manner can be used in very small quantities, about 2 to 5 wt. % of the total polyol and still produce a styrene/acrylonitrile polymer polyol with high solids and high styrene levels.Type: GrantFiled: May 17, 1990Date of Patent: October 25, 1994Assignee: Arco Chemical Technology, L.P.Inventors: John E. Hayes, Robert G. Gastinger
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Patent number: 5354823Abstract: This invention relates to a continuous film, coating, membrane or extruded filament of a crosslinked vinyl lactam polymer having excellent substrate adhesion, a glass transition temperature (Tg) above 150.degree. C. and water repellent properties. The invention also relates to the method of preparing and using filaments, coatings and membranes of said crosslinked polymeric product.Type: GrantFiled: August 9, 1993Date of Patent: October 11, 1994Assignee: ISP Investments Inc.Inventors: Susan Y. Tseng, Philip F. Wolf, William J. Burlant
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Patent number: 5352762Abstract: A multilayer printed circuit board comprising a plurality of alternately laminated layers of insulating layers and circuit conductor layers having a signal transmission delay time of 6.0 ns/m or less, excellent in heat resistance, adhesive, fire retardance, etc. can be produced by forming insulating layers using a fluorine-containing thermosetting resin composition.Type: GrantFiled: March 28, 1991Date of Patent: October 4, 1994Assignee: Hitachi, Ltd.Inventors: Akira Nagai, Shin Nishimura, Masahiro Suzuki, Masao Suzuki, Junichi Katagiri, Akio Takahashi, Akio Mukoh
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Patent number: 5338813Abstract: Copolymers are produced when a 4-vinyl-1,3-dioxolane monomer is copolymerized with an imidized maleic anhydride (for example, maleimide) monomer in the presence of a free radical initiator. Alternatively, a maleamic acid or maleimide functionality may be introduced into a copolymer containing a 4-vinyl-1,3-dioxolane and maleic anhydride by introducing a primary amine into the reaction mixture. Also, the dioxolane reactant may be introduced into the polymer by reacting 3,4-epoxy-1-butene in a ketone reaction solvent. The structure and composition of the product copolymer are controlled by both the sequence and conditions of the reaction. Products of this invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: January 24, 1994Date of Patent: August 16, 1994Assignee: Eastman Chemical CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5328973Abstract: A radiation-sensitive mixture which contains a polymeric binder having acid-labile side groups and a compound which generates a strong acid on irradiation wherein the binder is a polymer built up from novel amides of .alpha.,.beta.-unsaturated carboxylic acids, is highly sensitive in the shortwave uv region and useful in the production of recording material.Type: GrantFiled: July 31, 1992Date of Patent: July 12, 1994Assignee: Hoechst AktiengesellschaftInventors: Horst Roeschert, Georg Pawlowski, Klaus-Juergen Przybilla
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Patent number: 5328971Abstract: Copolymers are produced when a 3,4-epoxy-1-butene monomer is copolymerized with a maleimide monomer in the presence of a free radical initiator. The copolymerization involves both 1,2-propagation and 1,4-propagation of 3,4-epoxy-1-butene. Products of this invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: January 10, 1994Date of Patent: July 12, 1994Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5326840Abstract: A radiation-sensitive mixture is disclosed that contains a polymeric binder having acid-cleavable side groups and a compound which forms a strong acid on irradiation. Novel amides of .alpha.,.beta.-unsaturated carboxylic acids with which the polymers used as binders are synthesized are also disclosed. A positive- or negative-working radiation-sensitive recording material comprising a base and a layer of the radiation-sensitive mixture according to the invention is also disclosed.Type: GrantFiled: June 9, 1992Date of Patent: July 5, 1994Assignee: Hoechst AktiengesellschaftInventors: Klaus-Juergen Przybilla, Georg Pawlowski, Horst Roeschert
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Patent number: 5326826Abstract: Radiation-sensitive polymers, a mixture containing these radiation-sensitive polymers as binder, and a process for the preparation of the radiation-sensitive polymer binders are disclosed. A positive radiation-sensitive recording material containing the radiation-sensitive polymer is also disclosed.Type: GrantFiled: February 26, 1992Date of Patent: July 5, 1994Assignee: Hoechst AktiengesellschaftInventors: Horst Roeschert, Hans-Joachim Merrem, Georg Pawlowski, Juergen Fuchs, Ralph Dammel
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Patent number: 5324804Abstract: Compounds of formula (I) ##STR1## wherein R.sub.1 is hydrogen, methyl or halogen, n is 2 or 3, and R is C.sub.1 -C.sub.6 alkyl, benzyl, 2-tetrahydrofuranyl, 2-tetrahydropyranyl, C.sub.1 -C.sub.6 alkoxycarbonyl, phenoxycarbonyl or benzyloxycarbonyl, or, if two substituents OR are ortho-positioned to each other, two substituents R together form an ethylene group which may be substituted by up to four C.sub.1 -C.sub.6 alkyl groups, or form a C.sub.2 -C.sub.6 alkylidene group, can be polymerized in the absence or presence of other unsaturated comonomers to polymers having a molecular weight M.sub.w of 10.sup.3 to 10.sup.6 and which are suitable for producing positive photoresists with high resolution and very good contrast.Type: GrantFiled: April 22, 1993Date of Patent: June 28, 1994Assignee: Ciba-Geigy CorporationInventor: Alfred Steinmann
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Patent number: 5324793Abstract: Polymethacrylimide polymers poor in amide or N-alkylamide groups and in carboxyl and carbonic acid anhydride groups are obtained by heating a copolymer consisting of 1 to 60 mol percent of methacrylamide or/and an N-alkyl-methacrylamide and 40-99 mol percent of an alkyl methacrylate or/and phenyl methacrylate in an aliphatic monoalcohol.Type: GrantFiled: September 14, 1992Date of Patent: June 28, 1994Assignee: Rohm GmbHInventors: Manfred Brehm, Hartwig Droegemueller, Norbert Rau, Thomas Rhein
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Patent number: 5318814Abstract: Settlement of barnacles on surfaces in a marine environment is inhibited by employing as a construction material for said surface of polymers including methyl methacrylate and an effective amount (preferably about 2% to about 10%) of a copolymerizable N-substituted maleimide.Type: GrantFiled: April 5, 1993Date of Patent: June 7, 1994Assignee: Aristech Chemical CorporationInventors: Sharon J. Elliott, Virginia Piermattie, Stanley A. Rice, Theodore R. Wessendorf
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Patent number: 5319043Abstract: A high temperature heat resistant methacrylate-maleimide copolymer having at least 90% by weight methyl methacrylate monomer and up to about 10% by weight maleimide monomer to form a clear, weather-resistant copolymer having glass transition temperatures from about 105.degree. C. to about 131.degree. C. and a method of manufacture of the copolymers through an extremely high conversion bulk polymerization process.Type: GrantFiled: August 18, 1992Date of Patent: June 7, 1994Assignee: ICI Acrylics, Inc.Inventor: Jyi-Sheng J. Shen
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Patent number: 5317069Abstract: The present invention discloses a maleimide-alt-trialkylsilylstyrene copolymer having the formula: ##STR1## wherein: R.sub.1 is H or methyl;R.sub.2 is C.sub.1 -C.sub.3 alkyl; andn is an integer such that the copolymer has a weight average molecular weight of 25,000-120,000.The copolymer of formula (I) is useful in the preparation of a photoresist composition. A process for preparing the copolymer of formula (I) is also disclosed.Type: GrantFiled: June 7, 1993Date of Patent: May 31, 1994Assignee: National Science CouncilInventors: Wen-Yen Chiang, Jin-Yuh Lu
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Patent number: 5314513Abstract: The present invention relates to an abrasive article comprising:(a) a flexible substrate having a front side and a back side;(b) at least one layer of abrasive grains bonded to said front side of said substrate by means of a make coat;(c) optionally one or more additional coats selected from the group consisting of a size coat, a supersize coat, a saturant coat, a presize coat, and a backsize coat;wherein at least one of said make, size supersize, saturant, presize, and backsize coats comprises a maleimide binder. The invention also relates to a method of making the abrasive articles.Type: GrantFiled: September 28, 1992Date of Patent: May 24, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Philip Miller, Eric G. Larson, Don H. Kincaid
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Patent number: 5314950Abstract: Novel resin compositions are provided which possess excellent heat resistance and thermal color stability, alone, or in admixture with bulk resins. The claimed resin compositions comprise homo- and/or copolymers of N-(2,3-dimethylphenyl) maleimide, alone, or in further combination with resins composed of copolymer components, such as vinyl copolymers and rubber-grafted vinyl copolymer resins. The resin compositions have improved heat resistance and produce molded articles with desirably light colors. Also provided is an improved process to make maleimide monomers by using selected polar solvents whereby the amount of uncyclizable trans-amic acid is held at tolerable levels and the desired maleimide is obtained in high yields, free from by-products.Type: GrantFiled: January 22, 1993Date of Patent: May 24, 1994Assignee: Cytec Technology Corp.Inventors: Balwant Singh, Robert J. Tynik
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Patent number: 5310831Abstract: This invention is directed to a thermoplastic terpolymer excelling in thermal stability and transparency and possessing high mechanical strength, specifically a thermoplastic copolymer (I) composed of 30 to 70% by weight of (A) an aromatic vinyl compound unit, 4 to 40% by weight of (B) a vinyl cyanide unit, and 26 to 50% by weight of (C) an N-substituted maleimide and characterized by having a narrow distribution of molecular weight divisions of copolymer composition as measured by GPC, having substantially no acetone-insoluble content, possessing a weight average molecular weight in the range of 100,000 to 300,000 and a number average molecular weight in the range of 50,000 to 150,000, and having a residual N-substituted maleimide content of not more than 50 ppm.Type: GrantFiled: January 30, 1991Date of Patent: May 10, 1994Assignee: Asahi Kasei Kabushiki KaishaInventors: Katsuaki Maeda, Akihiro Watanabe, Hajime Nishihara
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Patent number: 5310839Abstract: Copolymers are produced when a 4-vinyl-1,3-dioxolane monomer is copolymerized with an imidized maleic anhydride (for example, maleimide) monomer in the presence of a free radical initiator. Alternatively, a maleamic acid or maleimide functionality may be introduced into a copolymer containing a 4-vinyl-1,3-dioxolane and maleic anhydride by introducing a primary amine into the reaction mixture. Also, the dioxolane reactant may be introduced into the polymer by reacting 3,4-epoxy-1-butene in a ketone reaction solvent. The structure and composition of the product copolymer are controlled by both the sequence and conditions of the reaction. Products of this invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: December 30, 1992Date of Patent: May 10, 1994Assignee: Eastman Chemical CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5306794Abstract: The present invention provides a method of producing a maleimide-olefin copolymer having excellent transparency. The production method employs precipitation polymerization for producing a maleimide-olefin copolymer by radical polymerization of a maleimide and an olefin.Type: GrantFiled: September 29, 1992Date of Patent: April 26, 1994Assignee: Tosoh CorporationInventors: Toru Doi, Yoshihiko Sugiura
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Patent number: 5302680Abstract: Copolymers are produced when a 3,4-epoxy-1-butene monomer is copolymerized with a maleimide monomer in the presence of a free radical initiator. The copolymerization involves both 1,2-propagation and 1,4-propagation of 3,4-epoxy-1-butene. Products of this invention can be cast as clear films and can also be used as reactive polymers.Type: GrantFiled: December 30, 1992Date of Patent: April 12, 1994Assignee: Eastman Kodak CompanyInventors: Richard W. Blevins, S. Richard Turner
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Patent number: 5302679Abstract: An adhesive composition capable of post-cure expansion comprising a multifunctional methacrylate and a maleimide capable of effectuating expansion upon post-cure. A homogeneous mixture of a monomer and maleimide are subjected to a first cure heat stage wherein a rigid partially-cured plastic is formed and a post-cure heat stage to effectuate permanent expansion of the cured adhesive composition.Type: GrantFiled: August 6, 1992Date of Patent: April 12, 1994Assignee: Loctite CorporationInventors: Eerik Maandi, Richard D. Rich
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Patent number: 5300603Abstract: A composition comprising a 1,2-dialkylidenecyclobutane such as 1,2-dimethylenecyclobutane, a polyacrylate monomer and an optional polyimide such as a bismaleimide can be thermally cured to a tough copolymer having a high glass transition temperature.Type: GrantFiled: May 19, 1993Date of Patent: April 5, 1994Assignee: Shell Oil CompanyInventor: Larry S. Corley
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Patent number: 5298582Abstract: Improvedly extrudable/coatable ethylene (co)polymers, well adopted for the production of film-coated metal composites, are prepared by radical polymerizing ethylene or recipe thereof including at least one ester of an unsaturated carboxylic acid, e.g., (meth)acrylic acid, advantageously under a pressure ranging from about 800 to 2,500 bars and at a temperature ranging from about 140.degree. to 280.degree. C., in the presence of an effective chain-transfer amount of at least one unconjugated diene, e.g., hexa-1,5-diene, deca-1,9-diene or 2-methylocta-1,7-diene.Type: GrantFiled: August 13, 1993Date of Patent: March 29, 1994Assignee: AtochemInventors: Michel Brusson, Jean Lebez
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Patent number: 5294511Abstract: A photosensitive composition containing a compound having a group represented by formula(I) or (II), said group, when irradiated with actinic radiation, forming a carboxylic acid or a sulfonic acid: ##STR1## wherein R.sub.1 represents hydrogen, an alkyl group, or an aryl group; andR.sub.2 to R.sub.6 may be the same or different and each represents hydrogen, a halogen, an alkoxyl group, an aryloxyl group, cyano group, or an alkyl group, provided that at least one of R.sub.2 to R.sub.6 represents an alkoxyl or aryloxyl group and two of R.sub.2 to R.sub.6 may link to form a ring.Type: GrantFiled: December 29, 1992Date of Patent: March 15, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiaki Aoai, Mitsunori Ono
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Patent number: 5274060Abstract: Copolymers having a molecular weight (Mw) of from 10.sup.3 to 10.sup.6, measured by gel-permeation chromatography, that are crosslinkable by acid catalysis and that consist ofa) 100-80 mol. % of structural repeating units of formulae I and II ##STR1## in a ratio of from 1:1 to 1:9 and b) 0-20 mol. % of structural repeating units of formula III ##STR2## wherein X and X' each independently of the other are ##STR3## R is hydrogen or a protecting group that can be removed by the action of acids, the radicals R.sub.1 each independently of the other are C.sub.1 -C.sub.5 alkyl, phenyl or naphthyl or together are 1,2-phenylene or --[C(R.sub.3)(R.sub.4)].sub.x -- wherein R.sub.3 and/or R.sub.4 =hydrogen or methyl and x is from 2 to 5, the radicals R.sub.2 each independently of the other are hydrogen, C.sub.1 -C.sub.5 alkyl or C.sub.1 -C.sub.5 alkoxy, R.sub.5 and R.sub.7 are each hydrogen, R.sub.6 is hydrogen, halogen or methyl and R.sub.8 is hydrogen, halogen, methyl, --CH.sub.2 halogen, --CH.sub.Type: GrantFiled: February 27, 1992Date of Patent: December 28, 1993Assignee: Ciba-Geigy CorporationInventor: Ulrich Schadeli
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Patent number: 5274059Abstract: A maleimide random copolymer contains an N-substituted compound structural unit, an unsaturated peroxycarbonate structural unit and optionally a vinyl monomer structural unit. In place of the unsaturated peroxycarbonate structural unit, an unsaturated peroxyester unit may be contained. A process for preparing a maleimide graft copolymer comprises polymerizing a mixture of an N-substituted maleimide compound and a vinyl monomer in the presence of a random vinyl copolymer containing peroxy groups with active oxygen content.Type: GrantFiled: May 28, 1992Date of Patent: December 28, 1993Assignee: Nippon Oil and Fats Co., Ltd.Inventors: Kenji Kato, Yasumi Koinuma, Kazunori Doiuchi, Seigo Kinoshita, Yukinori Haruta
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Patent number: 5270413Abstract: Copolymeric compositions derived from polydienophilic monomers and aliphatic cyclobutene monomers according to the formula ##STR1## in which each R is independently selected from hydrogen, halide, C.sub.1-10 alkyl, aryl and C.sub.1-10 heteroatomic such as alkoxy, aryloxy, alkylthio, arylthio and dialkylamino; X is a divalent linking group; an n is 2.Type: GrantFiled: November 24, 1992Date of Patent: December 14, 1993Assignee: Shell Oil CompanyInventor: Larry S. Corley
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Patent number: 5262504Abstract: A styrene copolymer which comprises a styrene repeating unit (a) represented by the general formula (I): ##STR1## and an acrylonitrile repeating unit (b) represented by the general formula (II-(b)): ##STR2## an unsaturated carboxylic acid or its ester repeating unit (c) represented by the general formula (II-(c)): ##STR3## or a maleimide or N-substituted maleimide (d) represented by the general formula (II-(d)): ##STR4## (in the formula, symbols are the same as defined in the specification) wherein stereoregularity of the styrene repeating unit (a) chain is a high degree of syndiotactic configuration is disclosed.Type: GrantFiled: October 19, 1990Date of Patent: November 16, 1993Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshinori Tazaki, Masahiko Kuramoto
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Patent number: 5262500Abstract: Silicon containing copolymers are mixed with diazonaphthoquinone esters to give UV photoresists for use in microlithography on integrated circuits (IC). The copolymer structure has a thermally resistant group, N-(4-hydroxyphenyl)maleimide, and an oxygen plasma resistant group, para-trialkylsilylstyrene.Type: GrantFiled: October 23, 1991Date of Patent: November 16, 1993Assignee: Tatung Co.Inventors: Wen-Yen Chiang, Jin-Yuh Lu
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Patent number: 5262515Abstract: A curable fluorine-containing polyimide of the formula: ##STR1## wherein R.sup.1 is a group derived from an aromatic tetracarboxylic acid dianhydride by the removal of two acid anhydride groups,R.sup.2 is a group derived from an aromatic diamine by the removal of two amino groups,A.sup.1 is a residue of the formula: ##STR2## (wherein R.sup.2 is the same as defined above, and Z is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms),A.sup.2 is a residue of the formula: ##STR3## (wherein R.sup.1 and Z are the same as defined above), and n is a number of 0 to 90, and at least one of the groups R.sup.1 and R.sup.Type: GrantFiled: July 10, 1990Date of Patent: November 16, 1993Assignee: Daikin Industries, Ltd.Inventors: Motonobu Kubo, Tsutomu Kobayashi
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Patent number: 5252689Abstract: A novel, one component self-crosslinking resin and a process for its preparation are provided. The resin is the copolymer of:(I) N-hydroxysuccinimide-blocked meta-isopropenylalpha, alpha-dimethylbenzyl isocyanate;(II) a hydroxy group-containing ethylenically unsaturated monomer such as hydroxyethyl acrylate; and(III) optionally, an ethylenically unsaturated monomer free of hydroxy groups such as methylmethacrylate or butyl acrylate.The copolymers are useful as thermally stable fast curing one component resins for paint, and produce, upon heat curing, films and objects with good hardness and solvent resistance.Type: GrantFiled: October 20, 1992Date of Patent: October 12, 1993Assignee: American Cyanamid CompanyInventors: Howard R. Lucas, Kuang-Jong Wu, William F. Jacobs
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Patent number: 5250643Abstract: A composition comprising a 1,2-dialkylidenecyclobutane such as 1,2-dimethylenecyclobutane, a polyacrylate monomer and an optional polyimide such as a bismaleimide can be thermally cured to a tough copolymer having a high glass transition temperature.Type: GrantFiled: May 28, 1992Date of Patent: October 5, 1993Assignee: Shell Oil CompanyInventor: Larry S. Corley
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Patent number: 5248757Abstract: Compounds containing at least one cyanate group, at least one maleimide group and at least one rodlike mesogenic moiety are prepared by reacting one or more aminophenols containing one or more rodlike mesogenic moieties with a stoichiometric quantity of a maleic anhydride per amine group of said aminophenol and then cyanating the resulting phenolic functional maleimide.Type: GrantFiled: July 7, 1992Date of Patent: September 28, 1993Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls
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Patent number: 5248758Abstract: Compounds containing at least one cyanate group, at least one maleimide group and at least one rodlike mesogenic moiety are prepared by reacting one or more aminophenols containing one or more rodlike mesogenic moieties with a stoichiometric quantity of a maleic anhydride per amine group of said aminophenol and then cyanating the resulting phenolic functional maleimide.Type: GrantFiled: July 7, 1992Date of Patent: September 28, 1993Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls