At Least One Reactant Which Forms Additional Polymer Contains A Heterocyclic Ring Patents (Class 525/186)
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Patent number: 5120790Abstract: Blends are formed with numerous commercially available resins and a comb-shaped polymer ("comb" for brevity) of a macromolecular monomer of a polylactone having terminal vinyl unsaturation so long as the polylactone chains are long enough to be compatible with one of the components to be blended. The comb may be formed with any polymerizable olefinically unsaturated monomer, preferably a vinyl, styryl, or acryloyl monomer. The vinyl unsaturation of the "head" of the macromer of polylactone may be acryloyl, styryl or allyl. The comb is made by a low temperature emulsion or suspension polymerization process. The comb, which has a hydrocarbon backbone and pendant polylactone chains, typically has a number average molecular weight of at least 10,000. A blend of first and second resins which are normally incompatible with each other, is also produced using a comb in which the backbone is compatible with one of the resins.Type: GrantFiled: October 28, 1991Date of Patent: June 9, 1992Assignee: The B. F. Goodrich CompanyInventor: Simon H. Yu
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Patent number: 5115020Abstract: The invention concerns a process for preparing composite resin particles having the so-called semi-IPN (inter penetration network) structure, in which linear thermoplastic polymer chains get entangled with a crosslinked polymer core through partial or thorough penetration. This method is very important in that both of the chain polymer and core polymer are freely selected from various resins.Type: GrantFiled: July 19, 1990Date of Patent: May 19, 1992Assignee: Nippon Paint Co., Ltd.Inventors: Hisaichi Muramoto, Yusuke Ninomiya, Keizou Ishii, Shinichi Ishikura
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Patent number: 5115024Abstract: An improved method for the preparation of crosslinked polycarbonates comprises the reaction at elevated temperature of a composition containing cyclic polycarbonate oligomers with at least one polyglycidyl acrylate copolymer formed by the reaction of at least one olefinic compound with a glycidyl acrylate monomer. Further disclosed are network polycarbonates wherein the carbonate chains are linked to each other via polyglycidyl acrylate copolymer groups, and prepreg compositions which comprise a filler and a mixture of cyclic polycarbonate oligomers with a polyglycidyl acrylate copolymer.Type: GrantFiled: February 13, 1991Date of Patent: May 19, 1992Assignee: General Electric CompanyInventors: Luca P. Fontana, Sterling B. Brown
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Patent number: 5110858Abstract: A composition comprising tetrafluoroethylene polymers, selected poly(2,2-dialkylpropiolactones) and particulate carbon, especially conductive carbon. It is useful as a molding compound for making parts, especially for electrical uses.Type: GrantFiled: March 23, 1990Date of Patent: May 5, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventor: Young H. Kim
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Patent number: 5098954Abstract: Graft and block copolymers of polyalkylvinyl ether and polyoxazoline moieties can be used as polymeric compatibilizers.Type: GrantFiled: November 5, 1990Date of Patent: March 24, 1992Assignee: Virginia Tech Intellectural Properties Inc.Inventors: Judy S. Riffle, Gurudus D. Sinai-Zingde
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Patent number: 5081188Abstract: A composition comprising tetrafluoroethylene polymers and selected poly(2,2-dialkylpropiolactones) that is useful as a molding compound is disclosed. Also provided is a process for the production and use of such a mixture and the pyrolysis of the mixture to give polytetrafluoroethylene parts.Type: GrantFiled: March 23, 1990Date of Patent: January 14, 1992Assignee: E. I. du Pont de Nemours and CompanyInventor: Young H. Kim
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Patent number: 5071921Abstract: Thermoplastic block copolymers of the idealized formulae (I)A--B--A; B--A--B or (A--B).sub.x (I)in whichx=1 to 40,and whereinA is the radical of a homopolymer of styrene, vinylnaphthalene, butadiene and isoprene, andB the radical of a homopolymer of a cyclic polycarbonate or lactone,the average molecular weight of blocks A and B being greater than 800, and a process for the preparation of these blocks copolymers in several reaction stages.Type: GrantFiled: October 20, 1989Date of Patent: December 10, 1991Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Christian Lindner, Edgar Leitz, Karl-Heinz Ott, Hans-Josef Buysch, Peter Mues, Hartwig Hocker, Helmut Keul
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Patent number: 5051476Abstract: An improved mouth guard composition comprises an ethylene/vinyl acetate copolymer and a thermoplastic polycarprolactone having a molecuar weight of 10,000-100,000, optionally with polyvinyl acetate, colorants and perfumes.Type: GrantFiled: March 23, 1990Date of Patent: September 24, 1991Assignee: G-C Dental Industrial Corp.Inventors: Toshiyasu Uji, Shunichi Futami, Kimihiko Sato
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Patent number: 5034463Abstract: A process for preparing an electrically conductive polymer composition which comprises preparing a blend of a solution of an intrinsically conductive polymer and a thermosetting, thermoplastic or elastomeric polymer and removing the solvent, the intrinsically conductive polymer being employed in a weight ratio to the second polymer of from about 0.005:1 to 3:1, the solution having a solids content of from about 2 to 75 weight percent, and the intrinsically conductive polymer being an electrically conductive, stacked macrocyclic metal complex polymer based upon porphyrin or a derivative thereof which comprises an organic bridging ligand containing conjugated pi-electrons allowing delocalization along the polymer chain and in which the metal atom is Fe, R, Rh, Co, Mn or Cr.Type: GrantFiled: October 15, 1990Date of Patent: July 23, 1991Assignee: Shell Oil CorporationInventors: Josephina C. M. Brokken-Zijp, Leonard E. H. Gerards, Michael Hanack
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Patent number: 5015693Abstract: An extrudable composition comprising thermoplastic hydrocarbon polymer, poly(oxyalkylene) polymer and fluorocarbon polymer. The poly(oxyalkylene) polymer and the fluorocarbon polymer are present in the composition in such relative proportions and concentrations as to reduce the occurence of melt defects during the extrusion of said hydrocarbon polymer composition.Type: GrantFiled: May 23, 1989Date of Patent: May 14, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventors: Denis Duchesne, Bryce V. Johnon
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Patent number: 5011875Abstract: A corrosion resistant, water expandable composition comprising:(A) 100 parts by weight of at least one material selected from the group consisting of rubbers, thermoplastic resins and mixtures thereof;(B) 10-200 parts by weight of a water-absorbable material; and(C) 5-30 parts by weight of a corrosion inhibitor is disclosed.Type: GrantFiled: March 26, 1990Date of Patent: April 30, 1991Assignees: Hiroshima Kasei Ltd., Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Yuji Yamamoto, Hideyuki Shigematsu, Hiroshi Tanaka, Ryo Ashikawa, Tatsuo Ishida
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Patent number: 5008142Abstract: A curable polymer composition for use in providing a dimensionally stable coating comprises a semi-interpenetrating polymer network. The semi-interpenetrating polymer network includes a reactive polymer component, cross-linking agent, and non-reactive polymer component. The non-reactive polymer component has a molecular weight of about 7,000-30,000, and preferably about 15,000. In preferred embodiments, the reactive polymer has a molecular weight of about 30,000-200,000, and preferably about 40,000-60,000. Spacecoat compositions made with formulations described, exhibit good long-term stability, and resistance to failure upon embossing of a substrate to which the retroreflective sheeting is applied.Type: GrantFiled: September 2, 1988Date of Patent: April 16, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventors: Bruce B. Wilson, Raymond E. Grunzinger
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Patent number: 5002992Abstract: An antistatic resin composition comprising the components (1) and (2) shown below:component (1): a propylene copolymer comprising (A) and/or (B) shown below:(A) a propylene random copolymer having a melt flow rate of 0.1 to 70 g/10 min. obtained by feeding 0.5 to 4.0% by weight of ethylene, 66.0 to 98.5% by weight of propylene and 1.0 to 30.0% by weight of an .alpha.-olefin having 4 to 12 carbon atoms (all ratios based on the total amount of the three components) into a polymerization system;(B) a propylene random copolymer having a melt flow rate of 0.1 to 70 g/10 min. obtained by feeding 2.5 to 10.0% by weight of ethylene and 90.0 to 97.Type: GrantFiled: March 8, 1989Date of Patent: March 26, 1991Assignee: Mitsubishi Petrochemical Company LimitedInventors: Hiroyoshi Hamanaka, Tetsuji Kakizaki
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Patent number: 5002991Abstract: An antistatic resin composition comprising the components (1) and (2) shown below:component (1): an ethylene random copolymer having a melt flow rate of 0.1 to 50 g/10 min.Type: GrantFiled: April 5, 1989Date of Patent: March 26, 1991Assignee: Mitsubishi Petrochemical Company LimitedInventors: Hiroyoshi Hamanaka, Tetsuji Kakizaki
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Patent number: 4988772Abstract: Graft and block copolymers of polyalkylvinyl ether and polyoxazoline moieties can be used as polymeric compatibilizers.Type: GrantFiled: May 23, 1989Date of Patent: January 29, 1991Assignee: Virginia Tech Intellectual Properties, Inc.Inventors: Judy S. Riffle, Gurudus D. Sinai-Zingde
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Patent number: 4960857Abstract: Linear alternating copolymers of carbon monoxide and an unsaturated bicyclic carboxylic acid compound are produced in the presence of a catalyst composition formed from a palladium compound, an anion of certain strong acids and a bidentate ligand of nitrogen. When the bidentate ligand is a bidentate ligand of phosphorus and an ethylenically unsaturated hydrocarbon is also present, a mixture of polymers is produced which includes the linear alternating copolymer.Type: GrantFiled: July 14, 1989Date of Patent: October 2, 1990Assignee: Shell Oil CompanyInventor: Eit Drent
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Patent number: 4960822Abstract: Thermoplastic moulding compounds containing(A) from 5 to 90 parts by weight of one or more thermoplastic polymers,(B) from 5 to 90 parts by weight of one or more graft polymers and(C) from 0.25 to 40 parts by weight of a copolymer having a sequential structure corresponding to the idealized formula (I)(A-X-B).sub.n (I)whereinA=a polymer of a cyclic carbonate,B=a polymer of another cyclic ester andX=a middle member containing both partial structures of A and B.Type: GrantFiled: March 6, 1989Date of Patent: October 2, 1990Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Edgar Leitz, Karl-Heinz Ott, Alfred Pischtschan
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Patent number: 4959410Abstract: Polymer mixtures having high tensile strength and good tear propagation resistance, consisting of(A) from 10 to 95 parts by weight of a graft polymer,(B) from 0 to 75 parts by weight of a thermoplastic resin component and(C) from 5 to 60 parts by weight of a copolymer having a sequence type of structure corresponding to the idealized formula (I)(A--X--B).sub.n (I)whereinA=polymer of a cyclic carbonate,B=polymer of another cyclic ester andX=middle member containing partial structures of both A and B.Type: GrantFiled: March 6, 1989Date of Patent: September 25, 1990Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Edgar Leitz, Karl-Heinz Ott, Christian Lindner, Lothar Meier, Otto Billinger
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Patent number: 4957998Abstract: Biodegradable polymers that are useful for making biodegradable sustained release agent dispensers and which contain acetal, carboxy-acetal, ortho ester and/or carboxy-ortho ester linkages.Type: GrantFiled: August 22, 1988Date of Patent: September 18, 1990Assignee: Pharmaceutical Delivery Systems, Inc.Inventors: Jorge Heller, Steve Y. W. Ng, Donald W. H. Penhale
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Patent number: 4942203Abstract: A polymer composition comprising (1) a polyether polyol which is a product obtained by the free radical addition of a fluoro-olefin of the general formula: ##STR1## wherein Y represents F or fluoroalkyl and Z represents Cl or F(CF.sub.2)m--wherein m is an integer from 0 to 10 or Y and Z together form a (CH.sub.2)p--chain wherein p represents an integer from 2 to 4, to a polytetramethylene gylcol having a molecular weight in the range 162 to 5000 and (2) at least one acrylic polymer. The composition is useful for coating compositions or for the fabrication of films.Type: GrantFiled: July 11, 1988Date of Patent: July 17, 1990Assignee: Imperial Chemical Industries PlCInventors: John N. Conti-Ramsden, Robert A. Head, Richard L. Powell, Brian D. Young
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Patent number: 4920203Abstract: This invention relates to medical devices formed totally or in part from homopolymers or copolymers comprising recurring carbonate moieties.Type: GrantFiled: August 2, 1988Date of Patent: April 24, 1990Assignee: Allied-Signal Inc.Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundabhai M. Patel
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Patent number: 4916193Abstract: This invention relates to novel copolymers containing carbonate repeat units and ester repeat units.Type: GrantFiled: August 1, 1988Date of Patent: April 10, 1990Assignee: Allied-Signal Inc.Inventors: Reginald T. Tang, Frank Mares, William J. Boyle, Jr., Tin-Ho Chiu, Kundanbhai M. Patel
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Patent number: 4916189Abstract: An improved method for the preparation of cross-linked polycarbonates is disclosed, comprising the reaction at elevated temperature of a composition containing cyclic carbonate oligomers with at least one polyglycidyl acrylate copolymer formed by the reaction of at least one olefin with a glycidyl acrylate monomer. This invention also includes network polycarbonates wherein the carbonate chains are linked to each other via polyglycidyl acrylate copolymer groups. Further included within the scope of this invention are prepreg compositions which comprise a filler and a mixture of cyclic carbonate oligomers with a polyglycidyl acrylate copolymer.Type: GrantFiled: July 5, 1988Date of Patent: April 10, 1990Assignee: General Electric CompanyInventors: Luca P. Fontana, Sterling B. Brown
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Patent number: 4912168Abstract: Transparent vinyl chloride polymer molding compounds containing a sequential copolymer having the following idealized formula(A-X-B).sub.n (I)in whichA=a polymer of a cyclic carbonate,B=a polymer of another cyclic ester andX=a middle segment containing both partial structures of A and B.Type: GrantFiled: March 6, 1989Date of Patent: March 27, 1990Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Edgar Leitz, Karl-Heinz Ott, Lothar Meier, Maria Gartner
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Patent number: 4912161Abstract: Thermoplastic moulding compounds containing(A) from 5-90 parts by weight of one or more thermoplastic polymers,(B) from 5-90 parts by weight of one or more graft polymers and(C) from 0.25-40 parts by weight of a blocked copolymer corresponding to the idealized formula (I)A - B - A; B - A - B or (A - B).sub.x (I)whereinA denotes the residue of a homopolymer, e.g. of styrene, andB denotes the residue of a homopolymer of a cyclic carbonate or lactone.Type: GrantFiled: March 6, 1989Date of Patent: March 27, 1990Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Edgar Leitz, Karl-Heinz Ott, Alfred Pischtschan
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Patent number: 4910256Abstract: Modified mixtures of poly(alkylene carbonate) polyols and polymers of certain unsaturated esters are prepared by (A) forming a mixture of a polymer of an ethylenically unsaturated ester and a polyalkylene carbonate polyol and (B) subjecting such mixture to conditions sufficient to induce a transesterification reaction between the polymer of an acrylic ester and a polyalkylene carbonate polyol.Type: GrantFiled: December 2, 1988Date of Patent: March 20, 1990Assignee: The Dow Chemical CompanyInventor: Donald G. Prier
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Patent number: 4891409Abstract: Crystalline elastomeric network compositions are transformable from their original cured shape into an altered shape and subsequently back to their original shape. The transformation process, which is repeatable, is effected by the simultaneous application of heat and deformation forces. The amount of heat required, expressed in terms of temperature, is relatively low. The shape-transformable compositions of the present invention are single phase blends of one or more crystalline polymers and one or more elastomer polymers. The compositions generally have a single broad endotherm due probably to the co-crystallization of the different crystalline segments, a low glass transition temperature, and a low transformation temperature, that is generally less than 100.degree. C.Type: GrantFiled: May 3, 1988Date of Patent: January 2, 1990Assignee: R.J.F. InternationalInventors: Tiong H. Kuan, Raymond C. Srail, Thomas R. Szczepanski
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Patent number: 4889765Abstract: Disclosed are coating compositions, coated articles made using said coating compositions and processes for preparing the same. More particularly disclosed are aqueous ink-receptive, water-based coatings which are smudgeproof and which will not wash off with water.Type: GrantFiled: December 22, 1987Date of Patent: December 26, 1989Assignee: W. R. Grace & Co.Inventor: John L. Wallace
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Patent number: 4889892Abstract: The compositions contain, as vinyl chloride polymers, copolymers of vinyl chloride and of alkyl acrylates in which the alkyl radicals, consisting of linear or branched chains, contain from 1 to 10 carbon atoms and have an initial Shore A hardness not exceeding 85. They are suitable for the production of very diverse flexible articles, especially in the medical field (pouches for blood and for physiological fluids), the motor vehicle field (various profiles and seals) and the building industry (sealing sheets).Type: GrantFiled: July 19, 1988Date of Patent: December 26, 1989Assignee: Solvay & CieInventors: Pierre Malfroid, Qui Long Nguyen, Jean-Marie Blondin, Jean-Paul Burnay
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Patent number: 4874030Abstract: Compositions useful in decomposition molding procedures such as destructive foam casting or ceramic or metallic powder sintering are provided by blends of polymers having greater than 50 weight percent propylene carbonate units and polymers having greater than 50 weight percent methyl methacrylate units. Such blends exhibit an unexpectedly even decomposition profile over the range of temperatures at which their constituent polymers each decompose relatively rapidly. The controlled decomposition rate reduces problems in destructive foam casting and ceramic or metallic powder molding caused by sudden release of gases by the foam pattern or the polymer binder. Preferred blends contain 35 to 65 weight percent poly(methyl methacrylate) and 65 to 35 weight percent poly(propylene carbonate), and very even decomposition behavior is exhibited by blends of 35 to 45 weight percent poly(methyl methacrylate) and 65 to 55 weight percent poly(propylene carbonate).Type: GrantFiled: March 22, 1989Date of Patent: October 17, 1989Assignee: Air Products and Chemicals, Inc.Inventors: Jeffrey A. Kuphal, Lloyd M. Robeson, James J. Weber
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Patent number: 4874818Abstract: A primer composition usable for steel sheet and plastic sheet in vehicle bodies consists mainly of a polycaprolactone graft polymer obtained by graft-polymerizing a styrene-butadiene-styrene block copolymer or its hydrogenated polymer with a ring-opened polymer of .epsilon.-caprolactone and having a grafting ratio of the ring-opened polymer within a range of 0.5.about.50% by weight.Type: GrantFiled: July 28, 1987Date of Patent: October 17, 1989Assignee: Nippon Oil and Fats Co., Ltd.Inventors: Shosaku Yamamoto, Kazuo Kakinuma, Hiroshi Ishioka, Fumio Sodeyama, Junji Mayumi, Riichiro Maruta
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Patent number: 4871811Abstract: A hot melt adhesive composition comprising (A) 99 to 80 wt % of a thermoplastic resin selected from the group consisting of a substantially amorphous thermoplastic saturated polyester resin, an ethylene-vinyl acetate copolymer and an ethylene-ethyl acrylate copolymer and (B) from 1 to 20 wt % of a monofunctional or polyfunctional cyanate ester compound having at least one cyanato group in the molecule is disclosed. The hot melt adhesive composition can further contain a co-modifier, a monofunctional or polyfunctional maleimide compound or a cross-linking catalyst for the thermoplastic resin (A). This composition has improved adhesive force, mechanical characteristics and heat resistance.Type: GrantFiled: August 23, 1988Date of Patent: October 3, 1989Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Morio Gaku, Hidenori Kinbara
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Patent number: 4871806Abstract: Curable compositions which comprise:(i) an acid-functional compound having an average of at least two carboxylic acid groups per molecule; and(ii) an anhydride-functional compound having an average of at least two cyclic carboxylic acid anhdyride groups per molecule; and(iii) an epoxy-functional compound having an average of at least one epoxy group per molecule; and(iv) a hydroxy-functional compound having an average of at least two hydroxyl groups per molecule;wherein at least one of the compounds (i), (ii), (iii) or (iv) comprises a film forming polymer.Type: GrantFiled: November 16, 1987Date of Patent: October 3, 1989Assignee: The Sherwin-Williams CompanyInventors: Mohamad D. Shalati, James A. Marquart
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Patent number: 4871812Abstract: A moldable, putty-like adhesive mass is disclosed comprising a blend of (1) an acrylate terpolymer adhesive containing a hydrophilic macromolecular moiety and (2) a reinforcing material which is a carbonylamido group containing polymer. The adhesive blends are moisture vapor permeable and non-water swellable. They are useful in many medical applications.Type: GrantFiled: October 15, 1987Date of Patent: October 3, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Donald H. Lucast, Donald R. Battles, Steven S. Kantner
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Patent number: 4864002Abstract: A process for preparing a thermoplastic polymer blend of two normally incompatible polymers by treating one polymer such that it contains repeating units of pendant cyclic iminoether groups and treating the other polymer such that it contains coreactive groups which are capable of reacting with the iminoether group to form linkages between the polymers. The compatibilized blend formed by the subject process is also provided.Type: GrantFiled: April 15, 1985Date of Patent: September 5, 1989Assignee: The Dow Chemical CompanyInventors: James E. Schuetz, Ronald W. Hohlfeld, Brenda C. Meridith
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Patent number: 4855360Abstract: An extrudable composition comprising thermoplastic hydrocarbon polymer, poly(oxyalkylene) polymer and fluorocarbon polymer. The poly(oxyalkylene) polymer and the fluorocarbon polymer are present in the composition in such relative proportions and concentrations as to reduce the occurrence of melt defects during the extrusion of said hydrocarbon polymer composition.Type: GrantFiled: April 15, 1988Date of Patent: August 8, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Denis Duchesne, Bryce V. Johnson
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Patent number: 4843128Abstract: An elastomeric composition formed by curing a blend comprised of (A) between about 70 and about 94 phr of a highly unsaturated rubber; (B) between about 3 and about 27 phr of ethylene/propylene/nonconjugated diene terpolymer having a number average molecular weight of more than about 35,000; (C) between about 3 and about 27 phr of ethylene/propylene/nonconjugated diene terpolymer having a number average molecular weight of between about 500 and about 15,000; between about 2 and about 7.5 phr of a quinoline antioxidant; and (D) an effective amount of curative exhibit unexpectedly desirable ozone resistance. Also disclosed is a process for preparing such elastomeric compositions.Type: GrantFiled: June 1, 1988Date of Patent: June 27, 1989Assignee: Uniroyal Chemical Company, Inc.Inventor: Frank C. Cesare
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Patent number: 4829124Abstract: A thermoplastic elastomer is described which comprises a blend of (a) a carboxylated butadieneacrylonitrile elastomer and (b) an ethylene/acrylic acid copolymer which has been at least partially neutralized with a metal ion, the blend of (a) and (b) having been dynamically crosslinked with an epoxy crosslinking agent having a minimum of 2 epoxy moieties per molecule.Type: GrantFiled: February 29, 1988Date of Patent: May 9, 1989Assignee: Armstrong World Industries, Inc.Inventor: Lawrence Clark
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Patent number: 4826910Abstract: The present invention provides a process to prepare an oil resistant thermoplastic elastomer composition which contains carboxylated nitrile rubber, polyvinyl chloride and polycaprolactone.Type: GrantFiled: November 10, 1987Date of Patent: May 2, 1989Assignee: Polysar LimitedInventor: Herbert F. Schwarz
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Patent number: 4820769Abstract: A hot melt adhesive composition comprising (A) 99 to 80 wt % of a thermoplastic resin selected from the group consisting of a substantially amorphous thermoplastic saturated polyester resin, an ethylene-vinyl acetate copolymer and an ethylene-ethyl acrylate copolymer and (B) from 1 to 20 wt % of a monofunctional or polyfunctional cyanate ester compound having at least one cyanato group in the molecule is disclosed. The hot melt adhesive composition can further contain a co-modifier, a monofunctional or polyfunctional maleimide compound or a cross-linking catalyst for the thermoplastic resin (A). This composition has improved adhesive force, mechanical characteristics and heat resistance.Type: GrantFiled: November 10, 1987Date of Patent: April 11, 1989Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Morio Gaku, Hidenori Kinbara
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Patent number: 4818615Abstract: Elongated granules of reinforcing fibers extending generally parallel to each other longitudinally of the granule each of said fibers being substantially surrounded by a thermally stable, film forming thermoplastic adhesive comprising(a) a poly(C.sub.2 -C.sub.6 alkyl oxazoline) in combination with(b) a poly (vinylpyrrolidone), provide complete dispersion of the fibers in thermoplastics during an injection molding cycle, conserving physical properties and providing significantly better EMI shielding than prior art extruder compounded resin/fiber blends.Type: GrantFiled: June 2, 1986Date of Patent: April 4, 1989Assignee: American Cyanamid CompanyInventors: Bruce A. Luxon, Malalur V. Murthy, Craig W. Panasy
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Patent number: 4808481Abstract: Elongated injection molding granules comprising fibers, which have a core and at least one relatively thick, uniform and firmly adherent, electrically conductive layer comprising on said core bonded with a thermally stable thermoplastic adhesive.Type: GrantFiled: October 31, 1986Date of Patent: February 28, 1989Assignee: American Cyanamid CompanyInventor: Bruce A. Luxon
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Patent number: 4801654Abstract: A block copolymer is disclosed which includes an ethylene-propylene copolymer segment (A) and a tetrahydrofuran segment (B). The weight ratio of (A) to (B) is 5/95 to 95/5, and the block copolymer has a number-average molecular weight of about 1,000 to about 1,000,000.Type: GrantFiled: June 12, 1987Date of Patent: January 31, 1989Assignee: Toa Nenryo Kogyo K.K.Inventors: Tokuo Makishima, deceased, by Nobuko Makishima, legal representative, Satoshi Ueki, Chihiro Imai
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Patent number: 4780494Abstract: An aqueous dispersion comprising one or more 2,2,6,6-tetraalkylpiperidine compounds having a molecular weight 2000 or less than 2000 and a melting point of 100.degree. C. or more, one or more cationic, non-ionic and/or anionic dispersing agents and an aqueous medium. These dispersions are suitable for use as light stabilizers in aqueous systems.Type: GrantFiled: April 11, 1985Date of Patent: October 25, 1988Assignee: Sandoz Ltd.Inventors: Erwin Hess, Rainer Wolf
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Patent number: 4769443Abstract: Novel light stabilizers, heat stabilizers and oxidation stabilizers for synthetic polymers have been synthesized; these are of the formula: ##STR1## in which R.sub.3 and R.sub.4 can be identical or different and are radicals of formula (III), (IV), (V), (VI) ##STR2## and R.sub.5 additionally can be a radical of formula VII ##STR3## and R.sub.4 is C.sub.2 -C.sub.Type: GrantFiled: August 3, 1987Date of Patent: September 6, 1988Assignee: Ciba-Geigy CorporationInventor: Giuseppe Cantatore
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Patent number: 4762883Abstract: A solution of a non-reactive polymer in a liquid oxazoline which may include a reactive additive such as a polyisocyanate to provide solid polymers by interpolymerization of the oxazoline and reactive additive are described.Type: GrantFiled: May 6, 1985Date of Patent: August 9, 1988Assignee: Ashland Oil, Inc.Inventor: Anil Goel
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Patent number: 4755623Abstract: A sterically unhindered, trifunctional primary amine is provided. This compound is useful as a crosslinking agent for a composition containing an amine-reactive polymer. Also provided is a low temperature cure composition containing the amine-reactive polymer and the trifunctional primary amine, and a crosslinked coating obtained by curing such a composition. Additionally, there is provided a process of synthesizing the novel trifunctional primary amine.Type: GrantFiled: September 6, 1983Date of Patent: July 5, 1988Assignee: American Cyanamid CompanyInventor: Roland Dileone
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Patent number: 4753987Abstract: Moldable compositions of a polyoxazoline and a hydrogenated elastomeric block copolymer grafted with ethylenically unsaturated carbonamide are disclosed which have good physical properties and chemical resistance.Type: GrantFiled: June 3, 1986Date of Patent: June 28, 1988Assignee: ARCO Chemical CompanyInventor: Barry D. Dean
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Patent number: 4743244Abstract: A polymer composition which is water-absorbent upon curing comprising: (a) a copolymer containing from about 25 to about 75 mole percent recurring units of at least one .alpha.,.beta.-unsaturated monomer bearing at least one pendant unit selected from the group consisting of a carboxylic acid unit, a carboxylic acid salt unit, a carboxylic acid anhydride unit, a carboxylic acid imide unit, a carboxylic acid amide unit and a carboxylic acid ester unit and from about 75 to about 25 mole percent recurring units of a copolymerizable monomer; and, (b) a polyether derived from C.sub.2 to C.sub.10 alkylene oxides, wherein from about 20 to about 65 percent of the total pendant units introduced through the .alpha.,.beta.Type: GrantFiled: April 11, 1986Date of Patent: May 10, 1988Assignee: Arco Chemical CompanyInventor: Bi LeKhac
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Patent number: 4737410Abstract: Pressure-sensitive adhesives comprise blends of acrylate copolymer copositions with polyalkyloxazolines. The blends exhibit enhanced cohesive strength with balanced adhesive properties and are useful as coatings for sheet materials.Type: GrantFiled: November 28, 1986Date of Patent: April 12, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventor: Steven S. Kantner