Cyclic Polycarboxylic Acid Anhydride Patents (Class 524/112)
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Patent number: 5124382Abstract: The invention relates to blends of polyarylene sulfides, epoxides, anhydrides, glass fibers and optionally other fillers. The blends are distinguished by good mechanical properties.Type: GrantFiled: March 4, 1991Date of Patent: June 23, 1992Assignee: Bayer AktiengesellschaftInventors: Burkhard Kohler, Wolfgang Wehnert, Walter Uerdingen, Joachim Franke
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Patent number: 5087524Abstract: A molding composition comprising a polycarbonate resin and plating modifier was found to be suitable for preparing metal coated articles where the metal coating is deposited by an electroless process. The plating modifier in accordance with the invention is at least one member selected from the group consisting of a polyanhydride, and a monovinyl aromatic-acrylonitrile copolymer. An advantageous embodiment of the invention includes incorporating in the molding composition a flame retarding amount of a conventional flame retarding agent for polycarbonate compositions.Type: GrantFiled: May 4, 1990Date of Patent: February 11, 1992Assignee: Mobay CorporationInventors: Sivaram Krishnan, Ronald L. Price, Peter H. C. Shu, Mark W. Witman
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Patent number: 5087666Abstract: There are provided compositions comprising poly(arylene sulfide), polymeric rubber, polyethylene, and carboxylic anhydride; and methods for making these compositions. Articles produced from the compositions have reduced shrinkage and improved impact strength.Type: GrantFiled: July 10, 1990Date of Patent: February 11, 1992Assignee: Phillips Petroleum CompanyInventors: Michael C. Yu, John B. Allison
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Patent number: 5075362Abstract: A sealing composition for a container closure comprises a polymeric matrix material and is modified by the inclusion therein of an oxygen scavenger. The composition can be in fluid or meltable form ready for application to a closure or it can be present as a deposit on the closure, for instance a gasket around the closure. Preferably the scavenging properties of the deposit are activated by pasteurizing or sterilizing the deposit when sealing a container with the closure. The invention is of particular value when the closure is a metal cap for a beer bottle.Type: GrantFiled: May 1, 1991Date of Patent: December 24, 1991Assignee: W. R. Grace & Co.-Conn.Inventors: Robert M. Hofeldt, Steven A. C. White
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Patent number: 5019599Abstract: A deodorizing urethane foam comprising a urethane foam substrate and a deodorizing component. The deodorizing component is composed of (A) a Diels-Alder reaction-type addition reaction product between an alpha,beta-unsaturated dicarboxylic anhydride and an olefin or a derivative of the reaction product and optionally (B) a copper compound. This urethane foam is produced by foaming a mixture of materials for the urethane foam substrate and the Diels-Alder reaction-type addition reaction product between an alpha,beta-unsaturated dicarboxylic anhydride and an olefin or its derivative of the reaction product and optionally the copper compound.Type: GrantFiled: March 22, 1989Date of Patent: May 28, 1991Assignee: Nippon Zeon Co., Ltd.Inventors: Yoshiaki Miki, Tsunehisa Ueda
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Patent number: 4996256Abstract: The invention relates to new, free-flowing arylene sulfide polymers (PAS) preferably phenylene sulfide polymers, which crystallize with delay, optionally additionally display improved resistance to UV radiation, and are prepared by mixing PAS with aromatic mononitro compounds in the melt, preferably with the application of shearing forces.Type: GrantFiled: May 30, 1989Date of Patent: February 26, 1991Assignee: Bayer AktiengesellschaftInventors: Hans-Detlef Heinz, Burkhard Kohler, Rolf-Volker Meyer, Klaus Reinking, Alexa Sommer
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Patent number: 4948823Abstract: Solid anhydrides of carboxylic acids, which anhydrides have a melting temperature of at least 100.degree. C. and a boiling temperature of at least 230.degree. C. at STP are suitable for use in nucleating systems for polyester compositions. Such nucleating systems reduce (i) mold cycle time (ii) mold temperature and (iii) the sensitivity of the composition to water during molding.Type: GrantFiled: December 1, 1988Date of Patent: August 14, 1990Assignee: Polysar Financial Services S.A.Inventor: Morton L. Wallach
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Patent number: 4859720Abstract: A concentrate composition, that can be diluted with water to form an aqueous size for cellulosic fibres, comprises a substantially anhydrous dispersion of polyelectrolyte particles in a non-aqueous liquid comprising a reactive size, and is made by forming a dispersion in a hydrophobic liquid of the polyelectrolyte particles while they are swollen by water, azeotroping the dispersion and adding the size to the hydrophoboic liquid. If the size is a liquid size, the hydrophobic liquid may be removed from the composition. The dispersion of swollen polyelectrolyte particles in the hydrophobic liquid can be amde by dispersing a solution of polyelectrolyte in the liquid but is preferably made by reverse phase polymerization.Type: GrantFiled: February 4, 1987Date of Patent: August 22, 1989Assignee: Allied Colloids Ltd.Inventors: Peter Flesher, John Langley, Norma Rosier, David Farrar
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Patent number: 4857570Abstract: The melting point and the apparent degree of crystallinity of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are stabilized against undue lowering by intimately mixing with the polymer a succinic anhydride or hydrolysis product thereof.Type: GrantFiled: May 24, 1988Date of Patent: August 15, 1989Assignee: Shell Oil CompanyInventor: Edgar J. Smutny
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Patent number: 4845138Abstract: Water-in-oil emulsions of water-soluble polymers, i.e. polyacrylamides, which are subject to freeze-thaw degradation are stabilized against repeated freeze-thaw cycles by incorporating specific substituted succinic anhydrides.Type: GrantFiled: April 15, 1988Date of Patent: July 4, 1989Assignee: Exxon Chemical Patents Inc.Inventors: Peter M. Robinson, Philip D. Raby, Nguyen Van-Det
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Patent number: 4837339Abstract: A novel 4-substituted-1,2,3,6-tetrahydrophthalic acid anhydride represented by the structural formula [I]: ##STR1## where R.sup.1 represents a lower alkoxy group, and R.sup.2 and R.sup.3 each represents a lower alkyl group or a lower alkoxy group, said 4-substituted-1,2,3,6-tetrahydrophthalic acid anhydride being liquid. The novel compound is useful as coupling agents, plasticizers, curing agents, etc.Type: GrantFiled: April 20, 1987Date of Patent: June 6, 1989Assignee: Nissan Chemical Industries, Ltd.Inventor: Fumie Sato
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Patent number: 4814366Abstract: Disclosed herein is a thermoplastic polyester resin composition comprising a thermoplastic polyester resin and an amount effective in ultraviolet screening of at least one of naphthalenetetracarboxylic acids, acid anhydrides thereof, imides thereof and esters thereof.Type: GrantFiled: October 5, 1987Date of Patent: March 21, 1989Assignee: Mitsubishi Chemical Industries LimitedInventors: Takuji Hirahara, Takashi Nakamura, Yoshiko Aoyama, Shuichi Maeda
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Patent number: 4801639Abstract: A flame-retardant olefinic resin composition comprising(A) 100 parts by weight of a mixed resin consisting of an olefinic resin and a silane-grafted polymer obtained by grafting a silane to said olefinic resin,(B) 50 to 300 parts by weight of a hydrated metal compound, and(C) 0.1 to 30 parts by weight of a dicarboxylic acid or dicarboxylic acid anhydride derivative.Type: GrantFiled: July 9, 1987Date of Patent: January 31, 1989Assignee: Sumitomo Bakelite Company LimitedInventors: Kazuo Hoshi, Yasuo Nakagawa
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Patent number: 4797435Abstract: Optionally substituted 3-benzalphthalides are effective UV stabilizers for thermoplastic aromatic polyesters, polycarbonates and polyester carbonates.Type: GrantFiled: January 12, 1987Date of Patent: January 10, 1989Assignee: Bayer AktiengesellschaftInventors: Thomas Scholl, Volker Serini, Dietrich Rathmann, Ross Savage, Klaus Kircher
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Patent number: 4785036Abstract: Water-in-oil emulsions of water-soluble polymers, i.e. polyacrylamides, which are subject to freeze-thaw degradation are stabilized against repeated freeze-thaw cycles by incorporating specific substituted succinic anhydrides.Type: GrantFiled: May 27, 1987Date of Patent: November 15, 1988Assignee: Exxon Chemical Patents Inc.Inventors: Peter M. Robinson, Philip D. Raby, Nguyen Van-Det
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Patent number: 4699975Abstract: A readily crystallizable arylenesulfide resin composition is produced by adding, to 100 parts by weight of an arylenesulfide polymer, 0.01 to 10.0 parts of an organic acid or organic acid anhydride having a high boiling or melting point such as 2,6-naphthalene dicarboxylic acid, and then heating the mixture to a temperature not lower than the melting point of the polymer. The resulting resin composition is characterized in that its crystallization from its glass state and molten state is very rapid, in that it forms very fine spherulite structures, and in that it has a high degree of crystallization, a very crystallizable character, and other desirable characteristics.Type: GrantFiled: March 5, 1986Date of Patent: October 13, 1987Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Katto, Yukio Ichikawa
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Patent number: 4578407Abstract: Spreadable thixotropic coating composition suitable for rust removal and containing polyvinylpyrrolidone, water and a thixotropic agent which is either xanthan gum or water-soluble crosslinked interpolymer of maleic anhydride, monovinyl alkyl ether and crosslinking agent. The composition has a pH between about 1.5 and 7.0 is applied to rusty metal surfaces and allowed to dry. During drying the rust becomes incorporated into the coating which is then easily removed.Type: GrantFiled: March 31, 1982Date of Patent: March 25, 1986Assignee: GAF CorporationInventors: Robert N. Amabile, Richard E. Judd, Stanley J. Gromelski, Jr.
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Patent number: 4569958Abstract: An elastomeric composition whose scorch is inhibited comprises [I] a halogen-containing elastomer, [II] a di- or tri-thiol-s-triazine compound and [III] at least one polycarboxylic acid compound selected from the group consisting of (A) a polycarboxylic acid having at least two carboxyl groups capable of forming an acid anhydride group in the molecule and (B) a halogen-substituted polycarboxylic acid anhydride.Type: GrantFiled: July 2, 1985Date of Patent: February 11, 1986Assignee: Nippon Zeon Co LtdInventors: Akio Maeda, Mitsuyoshi Aonuma, Masahiko Muranishi
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Patent number: 4547539Abstract: Substituted succinic anhydride or succinate stabilizers of the formula I or II ##STR1## where R.sub.1 and R.sub.2 are independently alkyl, cycloalkyl, phenyl or aralkyl, R.sub.3 is hydrogen or methyl, R.sub.4 is hydrogen, lower alkyl or phenyl, R.sub.5 is hydrogen, alkyl, alkylthio, arylthio or the structure ##STR2## and R.sub.6 and R.sub.7 are independently hydrogen, alkyl; aryl or substituted aryl are useful as stabilizers for polymeric substrates, particularly polyolefins and rubber.Type: GrantFiled: November 1, 1984Date of Patent: October 15, 1985Assignee: Ciba-Geigy CorporationInventors: John D. Spivack, Stephen D. Pastor
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Patent number: 4514229Abstract: An paper sizing composition which is suitable for use in neutral to alkaline paper making processes, which produces excellent sizing effect and which is well dispersed in water. Both the sizing effect and dispersion stability of the prepared sizing medium are durable. The paper sizing composition comprises: 20 to 90% by weight of (A) a reaction product and/or its hydrogenation product which reaction product is obtained by adding maleic anhydride to branched internal olefins having 14 to 36 carbon atoms which are obtained by oligomerizing one or a mixture of olefin starting materials having 6 to 18 carbon atoms and 10 to 80% by weight of (B) another reaction product and/or its hydrogenation product which reaction product is obtained by reacting maleic anhydride with straight chain internal olefins having 14 to 36 carbon atoms.Type: GrantFiled: April 13, 1984Date of Patent: April 30, 1985Assignee: Nippon Petrochemicals Company, LimitedInventors: Atsushi Sato, Yoshikazu Murai, Masahito Goto, Kanji Mochizuki
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Patent number: 4503177Abstract: The stabilization of selected photochromic compounds, selected from certain fulgides and fulgimides, is made possible by associating with such compounds a clay mineral having an expanding crystal lattice, which can stabilize a selected photochromic compound in a higher-energy colored form. The stabilized photochromic compound may be one included in a coating composition, such as a paper coating composition, or may constitute or be incorporated in a filler for a papermaking furnish or for a plastics material. The stabilizer serves to maintain the photochromic compound in its higher-energy colored state or one of its higher-energy colored states, thereby tending to prevent deterioration of color as the photochromic compound converts to an uncolored or weakly colored lower-energy state.Type: GrantFiled: July 6, 1982Date of Patent: March 5, 1985Assignee: English Clays Lovering Pochin & Co., Ltd.Inventors: Paul I. Reid, Brian R. Waters
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Patent number: 4491645Abstract: The present invention describes leather top coat compositions which are not dependent upon nitrocellulose comprising a mixture of acrylate copolymers and an aliphatic cyclic anhydride.Type: GrantFiled: May 3, 1982Date of Patent: January 1, 1985Assignee: Henkel CorporationInventor: John A. Thompson
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Patent number: 4469831Abstract: The object of this invention is a moisture-curing, storage stable, single-component polyurethane system comprising:A. a polyurethane prepolymer with a free isocyanate content of 1 to 5 percent by weight;B. a dialdimine having the formulaR[--N.dbd.CH--C(CH.sub.3).sub.2 --CH.sub.2 --O--CO--CH--(CH.sub.3).sub.2 ].sub.2in whichR is a divalent aliphatic radical with 2 to 10 carbon atoms, aliphatic radical having 4 to 10 carbon atoms and containing ether oxygen and/or lower alkylamino nitrogen atoms, cycloaliphatic radical with 6 to 15 carbon atoms oraromatic radical with 6 to 21 carbon atoms;andC. an acid catalyst selected from the group consisting of aliphatic carboxylic acids, aromatic carboxylic acids, toluenesulfonic acid, and mixtures thereof.The polyurethane systems are used as coating, sealing, casting, spackling and bonding materials.Type: GrantFiled: April 28, 1983Date of Patent: September 4, 1984Assignee: BASF AktiengesellschaftInventors: Uwe Bueltjer, Heinrich Horacek, Wolfgang Druschke, Gernot Franzmann, Erhard Klahr, Hans-Juergen Foerster
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Patent number: 4460410Abstract: A perylene-3,4,9,10-tetracarboxylic acid dianhydride pigment, useful as a varnish pigment, made by adding an aqueous solution of an alkali metal salt of perylene-3,4,9,10-tetracarboxylic acid and a surfactant to an acid at a pH below 3, at 0.degree. C. to 90.degree. C., and then heating the suspension so obtained at 50.degree. C. to 150.degree. C.Type: GrantFiled: December 21, 1982Date of Patent: July 17, 1984Assignee: Hoechst AGInventors: Ernst Spietschka, Manfred Urban
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Patent number: 4452931Abstract: A flame-retardant polyamide resin composition having an excellent flame-retarding property clearing over the level V-0 of the UL-94 Standard contains a flame retarder consisting essentially of:(1) a first flame-retarder component consisting essentially of at least one melamine derivative of the formula (I) ##STR1## wherein R.sup.1 and R.sup.2 represent, independently from each other, a divalent hydrocarbon radical having 1 to 15 carbon atoms and n represents zero or an integer of 1 to 5, and(2) a second flame-retarder component consisting essentially of at least one member selected from unsubstituted and substituted melamine cyanurate compounds and unsubstituted and substituted organic carboxylic acids and anhydrides having a boiling point and/or a decomposition point higher than the melting point of the polyamide resin matrix.Type: GrantFiled: March 24, 1983Date of Patent: June 5, 1984Assignee: UBE Industries, Ltd.Inventors: Hidemasa Okamoto, Mitsuo Yamanaka, Mokoto Takahashi
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Patent number: 4446264Abstract: Compounds prepared by reacting maleic anhydride, maleic acid or their esters with thiols; which exhibit a synergistic effect when combined with a phenolic antioxidant in the stabilization of organic materials such as natural and synthetic polymers, rubbers, lubricants and oil, etc. are disclosed.Type: GrantFiled: April 15, 1982Date of Patent: May 1, 1984Assignee: The Goodyear Tire & Rubber CompanyInventor: Kirkwood S. Cottman
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Patent number: 4444932Abstract: Moldable compositions which comprise a high molecular weight nonequimolar copolymer of an ethylenically unsaturated dicarboxylic acid or its derivative, and at least one copolymerizable monomer and, a surface gloss enhancing agent selected from the group consisting of amides or N,N-dimethylamides of linear and saturated or unsaturated fatty acids containing 16 or more carbon atoms and low molecular weight copolymers of styrene and maleic anhydride, facilitate the production of molded articles exhibiting improved surface gloss.Type: GrantFiled: June 1, 1982Date of Patent: April 24, 1984Assignee: Atlantic Richfield CompanyInventor: Peter S. Francis
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Patent number: 4433086Abstract: The tendency of high temperatures to decompose polymer compositions comprising polymer units derived from maleic anhydride is controlled by the use of a tetrahalogenated aromatic dicarboxylic acid or anhydride thereof.Type: GrantFiled: December 18, 1981Date of Patent: February 21, 1984Assignee: Monsanto CompanyInventor: Alva F. Harris
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Patent number: 4415690Abstract: Scorch (the premature cross-linking of an elastomer) is a problem that is often encountered in carboxylated rubbers. Succinic anhydride derivatives (alkenyl succinic anhydrides, alkyl succinic anhydrides, and their corresponding dicarboxylic acids) can be used to greatly improve the scorch resistance of carboxylated rubbers. These succinic anhydride derivatives can be distributed throughout a carboxylated rubber before or after coagulation using any procedure that will result in a thorough mixing to form a rubber composition with improved scorch resistance.Type: GrantFiled: May 17, 1982Date of Patent: November 15, 1983Assignee: The Goodyear Tire & Rubber CompanyInventor: Donald C. Grimm
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Patent number: 4410648Abstract: An organic high polymer composition having an improved flame retarding property which is obtained by incorporating into a flame resistive composition comprising (a) an organic high polymer substance, (b) an organic flame retarder and (c) incombustible active inorganic powder (d) a polyfunctional compound and (e) an organic compound represented by the formula: ##STR1## wherein Z is an oxygen atom or a sulfur atom, A is a C.sub.2 -C.sub.20 divalent hydrocarbon group having or not substituents and forming a ring together with the adjacent two carbon atoms and B, and B is an oxygen atom or an amino group: --NY-- (Y being a hydrogen atom, a halogen atom or an organic group having not more than 30 carbon atoms) or its hydrolyzate.Type: GrantFiled: August 17, 1981Date of Patent: October 18, 1983Assignee: Dainichi-Nippon Cables, Ltd.Inventors: Hiroshi Kato, Chiaki Momose
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Patent number: 4346187Abstract: Trityl compounds wherein a triphenylmethyl group is attached to oxygen, divalent sulfur, trivalent nitrogen or a halogen are effective synergists for organic bromine flame retardants in polypropylene compositions.Type: GrantFiled: March 8, 1979Date of Patent: August 24, 1982Assignee: Borg-Warner Chemicals, Inc.Inventor: George M. Nichols
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Patent number: 4324281Abstract: This invention is directed to a method, a rubber skim stock and a product containing the skim stock having improved adhesion between a metal member and contiguous rubber skim stock. The invention lies in the discovery that improved rubber-to-metal adhesion can be obtained by adding to an otherwise conventional rubber skim stock composition appropriate amounts of a tetracarboxylic dianhydride.The method of this invention comprises the steps of mixing a tetracarboxylic dianhydride into a rubber composition, bringing this composition into contiguous relationship with a metal member in an unvulcanized product and vulcanizing the product to yield the end product.Type: GrantFiled: April 11, 1980Date of Patent: April 13, 1982Assignee: The Firestone Tire & Rubber CompanyInventors: Frederick J. Ravagnani, Steven E. Schonfeld