At Least One Chalcogen Atom As Part Of A Hetero Ring (chalcogen=o, Se, Te) Dnrm Patents (Class 524/107)
-
Patent number: 6156112Abstract: This invention relates to high solids aqueous dispersions of reactive hydrophobizing agents, to methods of preparation of such dispersions, and to aqueous blends of such dispersions with a variety of other aqueous dispersions or solutions, including synthetic resin emulsions, wherein the aqueous dispersions of reactive hydrophobizing agents are prepared in the presence of a water-soluble protective colloid in combination with a solid water-insoluble anhydride compound. The dispersions of this invention efficiently impart hydrophobic characteristics to the surfaces and interfaces of materials onto which they are applied and unexpectedly exhibit very high stability to storage and handling conditions found in industry.Type: GrantFiled: February 10, 1999Date of Patent: December 5, 2000Inventor: Daniel H. Craig
-
Patent number: 6111000Abstract: The present invention relates to rubber compositions containing borate compounds of the formula ##STR1## wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; R.sup.3 is selected from the group consisting of alkylene groups having from 1 to 15 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 10 carbon atoms; X is selected from the group consisting of ##STR2## and Y is selected from the group consisting of S.sub.x and Se.sub.xwhere x is an integer of from 1 to 8.Type: GrantFiled: March 4, 1999Date of Patent: August 29, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Thierry Florent Edme Materne, Rene Jean Zimmer, Friedrich Visel, Uwe Ernst Frank
-
Patent number: 6103776Abstract: Phenolic amides, useful as stabilizers for organic materials such as polyols and polyurethanes, possess the general formula ##STR1## wherein n is 0 to 3, R.sub.1 is alkyl of from 1 to about 6 carbon atoms, R.sub.2 is hydrogen or alkyl of from 1 to about 6 carbon atoms, R.sub.3 is hydrogen or hydrocarbyl of up to about 20 carbon atoms, optionally containing one or more heterocyclic groups, R.sub.4 is hydrocarbyl of up to about 20 carbon atoms, optionally containing one or more heterocyclic groups, or R.sub.3 and R.sub.4 together with the nitrogen atom to which they are bonded are joined together to form a heterocyclic group, optionally containing one or more additional heterocyclic atoms.Type: GrantFiled: January 26, 1999Date of Patent: August 15, 2000Assignee: Uniroyal Chemical Company, Inc.Inventors: Robert G. Rowland, John R. Baranski
-
Patent number: 6069196Abstract: A molded article for photographic photosensitive material formed of a molding resin composition consisting essentially of 100 parts by weight of crystalline resin composition comprising crystalline resin and at least lubricant or antistatic agent, 0.001 to 2 parts by weight of antioxidant and 5 to 90 parts by weight of acrylic acid copolymer resin, and a molded article for photographic photosensitive materials formed of a light-shielding thermoplastic resin composition comprising a light-shielding material of which the surface has been treated with a surface-treating material and antioxidant. The molded article can inhibit bleeding out and thermal decomposition of antistatic agent, lubridant and organic nucleating agent, and can prevent various troubles induced therefrom.Type: GrantFiled: January 6, 1999Date of Patent: May 30, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Mutsuo Akao, Hiroyuki Osanai
-
Patent number: 6040367Abstract: The present invention relates to a polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of a compound containing oxymethylene unit, a compound containing oxymethylene unit having substituent or a cyclic ether compound having substituent.Type: GrantFiled: July 29, 1998Date of Patent: March 21, 2000Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Shinya Miya, Satoshi Kanayama
-
Patent number: 5981634Abstract: A method of preparing photochromic materials useful for optical applications, and photochromic materials prepared by such method, are described. Such method comprises polymerizing a blend of a polyol[(meth)acryloyl terminated carbonate] monomer and a photochromic amount of an organic photochromic substance, thereby forming a photochromic material. A preferred polyol[(meth)acryloyl terminated carbonate] monomer is diethylene glycol bis[(methacryloyloxy)ethylene carbonate]. Polymerization may be performed by free radical initiation using thermal initiators, photoinitiators or a combination of such initiators. Photochromic materials prepared by such method may be used in optical applications, e.g., photochromic lenses.Type: GrantFiled: July 22, 1998Date of Patent: November 9, 1999Assignee: PPG Industries Ohio, Inc.Inventors: Robert A. Smith, Christopher D. Selvig
-
Patent number: 5955619Abstract: This invention described novel compounds of formula ##STR1## wherein the general symbols are as defined in claim 1, as stabilisers for protecting organic materials, in particular polymers and lubricants, against thermal, oxidative or light-induced degradation.Type: GrantFiled: July 23, 1998Date of Patent: September 21, 1999Inventors: Peter Nesvadba, Samuel Evans, Christoph Krohnke, Jurg Zingg
-
Patent number: 5948838Abstract: The present invention relates to a polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of a compound containing oxymethylene unit, a compound containing oxymethylene unit having substituent or a cyclic ether compound having substituent.Type: GrantFiled: February 25, 1997Date of Patent: September 7, 1999Assignee: Mitsubishi Engineering-Plastics Corp.Inventors: Shinya Miya, Satoshi Kanayama
-
Patent number: 5939480Abstract: Thermosetting polymer compositions for forming molded products having a soft, resiliently deformable skin are provided. The polymer resin compositions include polyvinylchloride, phthalic acid ester, a heat stabilizing agent and a heat resistance agent and have physical properties that resemble latex-containing compositions.Type: GrantFiled: November 13, 1997Date of Patent: August 17, 1999Assignee: C.J. Associates, Ltd.Inventors: James S. W. Lee, Kwong-Wai Chow
-
Patent number: 5912289Abstract: Disclosed is a thermally stable aromatic polycarbonate composition comprising an aromatic polycarbonate, which is substantially free of a chlorine-containing compound, and a thermal stabilizer, the aromatic polycarbonate comprising a plurality of aromatic polycarbonate chains, each comprising recurring aromatic carbonate units and having a terminal aryl carbonate group and a terminal hydroxyl group, wherein each recurring unit has a divalent aromatic or pyridylene group comprising one or more divalent constituent aromatic or pyridylene groups, and wherein the plurality of aromatic polycarbonate chains collectively contain at least one constituent aromatic or pyridylene group substituted with at least one methyl group in an amount of 0.0001 or less in terms of the molar ratio of the methyl group substituted constituent group or groups relative to all constituent groups in the aromatic polycarbonate chains.Type: GrantFiled: January 24, 1997Date of Patent: June 15, 1999Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Kyosuke Komiya, Hiroshi Hachiya
-
Patent number: 5882550Abstract: A fire retardant agent to be incorporated in a plastic, especially polyurethane foam which functions as a foaming agent and comprises a mixture of soluble ammonium salts selected from the group consisting of ammonium monophosphate, ammonium diphosphate and an ammonium halide; and urea. Processes and apparatus for the production of a polyurethane foam are also described.Type: GrantFiled: October 1, 1996Date of Patent: March 16, 1999Assignee: Bains Harding LimitedInventor: Christopher John Regan
-
Patent number: 5869565Abstract: Described are compositions protected against thermal and oxidative degradation, comprisingA) a polyether polyol or mixtures of such polyols,B) at least one benzofuranone derivative of formula I ##STR1## wherein either two of R.sub.1, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 are each independently of the other C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, the others being hydrogen,orR.sub.7 to R.sub.10 are hydrogen, or at most two of these radicals are each independently of the other methyl or methoxy, and R.sub.1 is --O--CHR.sub.3 --CHR.sub.5 --O--CO--R.sub.6,R.sub.2 and R.sub.4 are each independently of the other hydrogen or C.sub.1 -C.sub.6 alkyl,R.sub.3 is hydrogen or C.sub.1 -C.sub.4 alkyl,R.sub.5 is hydrogen, phenyl or C.sub.1 -C.sub.6 alkyl, andR.sub.6 is C.sub.1 -C.sub.4 alkyl,C) at least one compound from group of the phenolic antioxidants, and/orD) at least one compound from group of the amino antioxidants of the secondary amine type.Type: GrantFiled: May 6, 1996Date of Patent: February 9, 1999Assignee: Ciba Specialty Chemicals CorporationInventor: Margot Clauss
-
Patent number: 5814692Abstract: The invention described novel compounds of formula ##STR1## wherein the general symbols are as defined in claim 1, as stabilizers for protecting organic materials, in particular polymers and lubricants, against thermal, oxidative or light-induced degradation.Type: GrantFiled: June 2, 1997Date of Patent: September 29, 1998Assignee: Ciba Specialty Chemicals CorporationInventor: Peter Nesvadba
-
Patent number: 5807505Abstract: The invention relates to compounds of formula I ##STR1## wherein the general symbols are as defined in claim 1, as stabilizers for protecting organic materials against thermal, oxidative or light-induced degradation.Type: GrantFiled: June 25, 1997Date of Patent: September 15, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Peter Nesvadba, Samuel Evans
-
Patent number: 5773491Abstract: The object of the present invention is polycarbonate molding compositions containing polycarbonates, stabilizers of the general formula (I)R.sub.1 --X--CZ--Y--R.sub.2and optionally polypropylene glycols. The object of the present invention is also use of these molding compositions to produce items for medical applications.Type: GrantFiled: March 7, 1996Date of Patent: June 30, 1998Assignee: Bayer AGInventors: Wolfgang Ebert, Ralf Hufen, Ru digerart, Gerhard Fennhoff
-
Patent number: 5741912Abstract: Novel compounds containing a heteroatom-bearing bridge and novel complexes of these compounds with metals. The novel compounds and complexes are useful in diagnostic and therapeutic methods.Type: GrantFiled: June 6, 1995Date of Patent: April 21, 1998Assignee: Bracco International B.V.Inventors: Kondareddiar Ramalingam, Natarajan Raju
-
Patent number: 5726227Abstract: Thermoplastic moulding compositions containingA) polymers selected from the group comprising polyolefines, styrene polymers, polyamides, polyalkyl methacrylates, polyphenylene sulphides, ABS graft polymers, and thermoplastic polyurethanes, andB) esters of phosphorous acid which contain at least one oxetane group and at least one radical of a dihydric or polyhydric phenol per molecule, andoptionallyC) fillers and reinforcing materials,D) flame retardant additives,E) elastomeric modifiers.Type: GrantFiled: November 20, 1996Date of Patent: March 10, 1998Assignee: Bayer AGInventors: Herbert Magerstedt, Ernst Grigat
-
Patent number: 5726240Abstract: This invention relates to mixtures of polymethylene poly(phenylisocyanate) blends with epoxides. The addition of the epoxide stabilizes the reactivity of the polyisocyanate blends such that it is no longer dependent on the acidity. It is now possible to form polyurethanes from these mixtures based on polymethylene poly(phenylisocyanate) blends wherein less catalyst is necessary.Type: GrantFiled: November 25, 1996Date of Patent: March 10, 1998Assignee: Bayer CorporationInventors: James W. Rosthauser, Robert L. Cline, Richard S. Pantone
-
Patent number: 5717057Abstract: A method for manufacturing polycarbonate in which an aromatic dihydroxy compound and a carbonic acid diester can be effectively subjected to melt polycondensation using a small amount of a catalyst, making it possible to manufacture polycarbonate having outstanding color matching, outstanding thermal stability, color-matching stability, etc., during molding, and outstanding water resistance is characterized in that when an aromatic dihydroxy compound and a carbonic acid diester are subjected to melt polycondensation in the presence of a catalyst, the catalyst is dissolved or dispersed as a catalyst solution, this catalyst solution is added to the melt polycondensation reaction system, and the aromatic dihydroxy compound and carbonic acid diester are subjected to melt polycondensation.Type: GrantFiled: December 28, 1995Date of Patent: February 10, 1998Assignee: General Electric CompanyInventors: Takeshi Sakashita, Tomoaki Shimoda, Takashi Nagai
-
Patent number: 5710197Abstract: Fluorescent pigments contain essentially a polymer matrix based on polymethyl methacrylate and a nonpolar fluorescent dye from the coumarin or perylene series, the polymer matrix being a crosslinked polymethacrylate or polyacrylate prepared by suspension polymerization.Type: GrantFiled: July 13, 1995Date of Patent: January 20, 1998Assignee: BASF AktiengesellschaftInventors: Wolfgang Fischer, Andreas Deckers, Norbert Guntherberg, Ekkehard Jahns, Sylke Haremza, Werner Ostertag, Helmut Schmidt
-
Patent number: 5627286Abstract: Novel compounds containing a heteroatom-bearing bridge and novel complexes of these compounds with metals. The novel compounds and complexes are useful in diagnostic and therapeutic methods.Type: GrantFiled: June 6, 1995Date of Patent: May 6, 1997Assignee: Bracco International B.V.Inventors: Kondareddiar Ramalingam, Natarajan Raju
-
Patent number: 5608110Abstract: Novel compounds containing a heteroatom-bearing bridge and novel complexes of these compounds with metals. The novel compounds and complexes are useful in diagnostic and therapeutic methods.Type: GrantFiled: May 18, 1994Date of Patent: March 4, 1997Assignee: Bracco International B.V.Inventors: Kondareddiar Ramalingam, Natarajan Raju
-
Patent number: 5606008Abstract: The purpose of the present invention is to provide a method for manufacturing polycarbonate in which polycarbonate having outstanding color matching, outstanding thermal properties, particularly retention stability during molding, and outstanding water resistance can be effectively and easily manufactured.In the method for manufacturing polycarbonate of the present invention, an aromatic dihydroxy compound and a carbonic acid ester are subjected to melt condensation polymerization in the presence of a catalyst composed of(a) an aliphatic amine with 24-60 carbon atoms, and (b) an alkali metal compound and/or alkaline earth metal compound.The (a) aliphatic amine having 24-60 carbon atoms should preferably be an aliphatic tertiary amine and be used in the amount of 1.times.6.sup.-6 -1.times.10.sup.-1 moles for each mole of the aromatic dihydroxy compound, and the (b) alkali metal compound and/or alkaline earth metal compound should be used in an extremely minute specified amount.Type: GrantFiled: July 21, 1995Date of Patent: February 25, 1997Assignee: General Electric CompanyInventors: Takeshi Sakashita, Tomoaki Shimoda, Takashi Nagai
-
Patent number: 5587421Abstract: A mixture containsa) water-emulsifiable polyisocyanates andb) carbonic esters or lactones as organic solvents.Type: GrantFiled: August 18, 1995Date of Patent: December 24, 1996Assignee: BASF AktiengesellschaftInventors: Peter Weyland, Reinhard Treiber, Alwin Sturm, Horst Seibert, Hans Renz, Jurgen Reichert, Karl Haberle
-
Patent number: 5563193Abstract: There is now provided a solvent cement having a total of less than 80 weight percent of solvents and a thermoplastic polyurethane elastomer as at least one of the resins dissolved in the solvent. The solvent mixture contains at least a 5- or 6-membered water miscible lactone or lactam such as N-methyl-2-pyrrolidone (NMP) in an amount of 21 weight percent or less based on the weight of all the ingredients. The reduced solvent concentration assists in lowering VOC emissions while preserving the hydrostatic burst strength mechanical property required by ASTM D 2564-88.Type: GrantFiled: January 25, 1996Date of Patent: October 8, 1996Assignee: BASF CorporationInventors: Ulrich Abel, Lawrence E. James, Mark W. Waldrop
-
Patent number: 5562794Abstract: There is now provided a solvent cement having a total of less than 80 weight percent of solvents and a thermoplastic polyurethane elastomer as at least one of the resins dissolved in the solvent. The solvent mixture contains at least a 5- or 6-membered water miscible lactone or lactam such as N-methyl-2-pyrrolidone (NMP) in an amount of 21 weight percent or less based on the weight of all the ingredients. The reduced solvent concentration assists in lowering VOC emissions while preserving the hydrostatic burst strength mechanical property required by ASTM D 2564-88.Type: GrantFiled: March 8, 1995Date of Patent: October 8, 1996Assignee: BASF CorporationInventors: Ulrich Abel, Lawrence E. James, Mark W. Waldrop
-
Patent number: 5550192Abstract: Disperse dyeable compositions of ethylene alkyl acrylate grafted onto polypropylene are provided. A process for disperse dyeing polypropylene fibers is provided. This process comprises (a) extruding the polypropylene with about 2 to 10% by weight of a thermoplastic copolymer of ethylene and alkyl acrylates having one to four carbon atoms in the alkyl group into fibers, and (b) exposing the fibers to a disperse dye bath containing a selected disperse dye.Type: GrantFiled: February 3, 1995Date of Patent: August 27, 1996Assignee: Lyondell Petrochemical CompanyInventors: Paresh J. Sheth, Venkatramana Chandrashekar, Roger R. Kolm
-
Patent number: 5491179Abstract: An improved thermoplastic molding composition containing polycarbonate and a polyester copolymer based on cyclohexane-dimethanol, ethylene glycol and phthalic acid is disclosed. Improved thermal stability and resistance to gamma-radiation results from the incorporation of a phosphite conforming to ##STR1## where n, m, p and r are integers, and where R is H, an alkyl or an aryl group and R.sub.3 denotes an alkyl or aryl group.Type: GrantFiled: November 23, 1994Date of Patent: February 13, 1996Assignee: Bayer CorporationInventor: James P. Mason
-
Patent number: 5374305Abstract: The present invention relates to precursor coating compositions containing water and at least one organic solvent which are particularly suitable for being admixed with at least one supercritical fluid used as a viscosity reduction diluent and then spraying this resultant liquid mixture of supercritical fluid and precursor coating composition onto a substrate to be coated. Processes for spraying this precursor mixture are also disclosed.Type: GrantFiled: April 10, 1991Date of Patent: December 20, 1994Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Charles W. Glancy, David C. Busby
-
Patent number: 5317050Abstract: Compositions containing an aryl phosphite and water to hydrolyze the aryl phosphite provide controlled and extended work time when used as hardening agents for the ambient temperature hardening of phenolic resins and for rapid hardening of such resins at modestly elevated temperatures. Pre-solvolysis with small quantities of water, alkanols of 1 to 4 carbon atoms or alkylene glycols of 2 to 4 carbon atoms improve compatibility of trisubstituted phosphites with the resin. Pre-hydrolysis of the phosphites as well as addition of furfuryl alcohol or alkylene glycols of 2 to 4 carbon atoms accelerate the hardening (curing) of the resin. Various compounds such as: carboxylic acid amides, urea, dicyandiamide, N-methylolated amides, N-alkyl 2-pyrrolidinones having 1 to 4 carbon atoms in the alkyl group, those having an internal epoxide group, alkanols, and Schiff bases retard the ambient temperature hardening of the resin with the aryl phosphite hardening agents.Type: GrantFiled: December 13, 1993Date of Patent: May 31, 1994Assignee: Borden, Inc.Inventor: Arthur H. Gerber
-
Patent number: 5306801Abstract: The present invention relates to a polycarbonate production method. More specifically, it relates to a polycarbonate production method that is capable of preparing polycarbonates which have excellent residence stability such as hue stability and heat stability at the time of molding, and which have particularly outstanding water resistance.Type: GrantFiled: June 24, 1992Date of Patent: April 26, 1994Assignee: GE Plastics Japan, Ltd.Inventors: Takeshi Sakashita, Tomoaki Shimoda
-
Patent number: 5219912Abstract: An emulsified alkenylsuccinic acid sizing agent having a solid content of not less than 25% by weight is disclosed, which comprises a composition having not less than 25 parts by weight of alkenylsuccinic acid derived from the reaction product of a branched internal olefin of 12-18 carbon atoms with maleic anhydride, and being dispersed in water with an anionic polymer type dispersant or with an anionic polymer type dispersant and an emulsifier.Type: GrantFiled: July 10, 1991Date of Patent: June 15, 1993Assignee: Mitsubishi Oil Co., Ltd.Inventors: Yoshio Takahashi, Junji Okazaki, Hideto Umekawa, Toshihiro Tahara
-
Patent number: 5194467Abstract: Highly heat distortion resistant moulding compositions are disclosed comprising an aromatic polycarbonate having molecular weights Mw (weight average) of a least 10,000, containing bifunctional carbonate structural units corresponding to formula (Ia) ##STR1## wherein R.sup.1 and R.sup.2 denote, independently of one another, hydrogen, halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.7 -C.sub.12 -aralkyl,m stands for an integer from 4 to 7,R.sup.3 and R.sup.4, which are selected individually for each X, denote, independently of one another, hydrogen or C.sub.1 -C.sub.6 -alkyl, andX denotes carbonunder the condition that R.sup.3 and R.sup.4 are both alkyl on at least one X atom andas the only thermo stabilizer, from 0.001 to 1% by weight of a siloxane corresponding to formula (II) ##STR2## wherein R and R' denote, independently of one another, C.sub.1 -C.sub.4 -alkyl or -aryl andx and y stand for the numbers 1,2 or 3 and x+y always add up to 4.Type: GrantFiled: January 3, 1992Date of Patent: March 16, 1993Assignee: Bayer AktiengesellschaftInventors: Helmut-Martin Meier, Uwe Westeppe, Rolf Dhein, Dieter Freitag, Martin Wandel, Axel Sandquist
-
Patent number: 5187211Abstract: The invention relates to thermoplastic polycarbonate molding compositions which are rendered resistant to gamma-radiation by incorporating therewith about 0.1 to about 5 percent by weight of a stabilizing agent selected from the group consisting of ##STR1## wherein R is a hydrogen or a halogen atom or a C.sub.1 -C.sub.10 alkyl, a C.sub.6 -C.sub.10 alkyl, a C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.22 acyl, C.sub.6 -C.sub.18 alkylaryl or a C.sub.4 -C.sub.10 cycloalkyl radical, n is an integer of at least 1 and preferably 1 to about 100 and Y and Y.sup.1 independently are a hydrogen atom, a C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.10 alkyl or a C.sub.6 -C.sub.18 alkylaryl or a C.sub.6 -C.sub.18 arylalkyl radical or ##STR2## wherein m is 1 or 3-6, R.sub.1, R.sub.2 and R.sub.3 independently are a hydrogen atom or a C.sub.1 -C.sub.10 alkyl, C.sub.6 -C.sub.10 aryl or a C.sub.6 -C.sub.18 alkylaryl radical.Type: GrantFiled: February 1, 1989Date of Patent: February 16, 1993Assignee: Miles Inc.Inventors: Charles E. Lundy, Sivaram Krishnan, Gerald L. Robbins, Rick L. Archey
-
Patent number: 5169881Abstract: The present invention concerns a process for preparing a treated blend which contains pigment material dispersed in a continuous phase of water and a polyester material. The invention also concerns compositions prepared from such process. The polyester material of the treated blend is linear, contains a sulfomonomer, and has an average particle size of less than 1 .mu.m.Type: GrantFiled: May 6, 1991Date of Patent: December 8, 1992Assignee: Eastman Kodak CompanyInventors: Kimberly T. Peters, Stephen H. W. Wu
-
Patent number: 5166236Abstract: An elastomeric composition containing a fugitive tracer compound that fluoresces on exposure to radiation, but which loses its fluorescence during postcuring treating permits monitoring of the completeness of the cure.Type: GrantFiled: December 5, 1990Date of Patent: November 24, 1992Assignee: E. I. du Pont de Nemours and CompanyInventors: James A. Alexander, Paul D. Brothers, Philip C. Mazzola, Mark A. Stepanek
-
Patent number: 5115004Abstract: Polyester resin molding compositions exhibiting exceptional low temperature physical properties (i.e., flexibility and toughness) and satisfactory mold-release properties include a melt-blend of a polyester base resin (preferably one which predominantly contains polybutylene terephthalate units), a polyester elastomer (preferably a copolyester having hard and soft segments), and a mold-release effective amount of a sorbitan ester (preferably an ester reaction product of a sorbitan with fatty acid having at least 12 carbon atoms). The sorbitan ester most preferably has a hydroxyl value of between 50 to 400, exclusive, so that blooming during injection molding operations (e.g., a predrying stage) is minimized (if not eliminated entirely). Molded articles formed of the compositions of this invention may be used in a variety of applications, for example, as parts for the automotive and/or electronics industries.Type: GrantFiled: August 14, 1991Date of Patent: May 19, 1992Assignee: Polyplastics Co., Ltd.Inventors: Mitsuhiro Mochizuki, Mitsuo Wada, Hiromitsu Seitou
-
Patent number: 5013775Abstract: A novel paper sizing composition comprising a ketene dimer and a hydrophilic vinyl polymer containing an alkylmercaptan having 6-22 carbon atoms. The composition has excellent storage and mechanical stability and sizing effect.Type: GrantFiled: April 27, 1989Date of Patent: May 7, 1991Assignee: DIC-Hercules Chemicals, Inc.Inventors: Hideo Oikawa, Masatomi Ogawa, Kiyoshi Iwai, Mayumi Narushima
-
Patent number: 4965303Abstract: A polycarbonate composition comprising 100 parts by weight of polycarbonate and 0.1 to 1.0 part by weight of at least one anti-yellowing compound selected from the group consisting of itaconic acid, itaconic anhydride, benzaldehyde dimethyl acetal, benzaldehyde propyleneglycol acetal and p-phthalaldehyde.Type: GrantFiled: August 3, 1989Date of Patent: October 23, 1990Assignee: Teijin Chemicals, Ltd.Inventor: Kazuo Kishimoto
-
Patent number: 4885322Abstract: An ammonium slat represented by the formula ##STR1## wherein X represents aliphatic group or alicyclic group, each of which may contain halogen, oxygen, nitrogen or sulfur in the group;n is an integer of 1 or more; and R and R' each independently represent hydrogen or an alkyl having 1 to 12 carbon atoms, and may conjointly form a ring;is useful as a modifier for rubber, particularly to improve dynamic properties of rubber. The process for producing the ammonium salt is also disclosed.Type: GrantFiled: May 19, 1988Date of Patent: December 5, 1989Assignee: Sumitomo Chemical Company, LimitedInventors: Isao Kurimoto, Hiroki Yamamoto, Tetsuo Yamaguchi
-
Patent number: 4857569Abstract: A novel thermoplastic composition is prepared by intimately mixing a polyurethane component with a selected reinforcing amount of a rod-like aromatic polyamide component. The composition exhibits unexpected tensile and modulus properties.Type: GrantFiled: July 27, 1987Date of Patent: August 15, 1989Assignee: SRI InternationalInventors: David B. Cotts, Louisa Brodrecht
-
Patent number: 4847316Abstract: Compositions useful as printing inks or as dry or wet concentrates for the preparation of inks, comprising substantially homogenous blends of from about 0.1 to about 50.0 wt. % water dispersible polyurethane, and conversely from about 99.9 to about 50.0 wt. % water dispersible polyester, and preferably containing from about 1.0 to about 95.0 wt. % of a solvent system comprising water or water admixed with cosolvent, the cosolvent comprising up to about 30.0 wt. % of the solvent system. These blends show exceptionally marked improvements in certain physical properties such as: stability of viscosity to ambient and process conditions; linearity of viscosity change with water dilution; consistency of viscosity for a great variety of pigments; and greatly improved shelf-life (no significant polymer segregation of layering). Such properties greatly enhance the utility of these blends for use in pigmented or dyed printing inks and in other substrate coating formulations which may or may not contain colorants.Type: GrantFiled: February 2, 1988Date of Patent: July 11, 1989Assignee: Eastman Kodak CompanyInventors: Martin F. Schick, William C. Hickman, Gary T. Clark, Rebecca R. Stockl
-
Patent number: 4798822Abstract: Compounds of the formula I or II, ##STR1## wherein m is 1 or 2, A is branched or unbranched 1,2- or 1,3-alkylene, or o-phenylene, E is a group III or IIIa, R is hydrogen or methyl, R.sup.1 and R.sup.3 are hydrogen, alkyl, alkenyl, aralkyl, alkanoyl, alkenoyl, benzoyl or cyanomethyl, R.sup.2 is a radical of valency m and R.sup.4 is a monovalent radical, are effective processing stabilizers for polymers, in particular for polyolefins, and additionally have a stabilizing action against damage by light.Type: GrantFiled: January 29, 1987Date of Patent: January 17, 1989Assignee: Ciba-Geigy CorporationInventors: Michael Rasberger, Peter Hofmann, Hans R. Meier, Paul Dubs
-
Patent number: 4783279Abstract: The invention relates to a plastic mixture with electromagnetic shielding characteristics based on a matrix with a content of ferroelectrics and electrically conductive and/or ferromagnetic fillers, which is characterized in that the ferroelectric component has a Curie point or a phase transition range from the ferroelectric into the paraelectric phase covering the Curie point and which is in the range of the use temperature of -40.degree. to +98.degree. C. of the electromagnetic shielding material and, based on the electromagnetic material volume, is present in a quantity of 1 to 20 vol. %, whilst the electrically conductive or ferromagnetic fillers are present in quantitites of 5 to 15 vol. %, the ferroelectric component preferably being an organic compound selected from the group consisting of semi carbadize-hydrochloride, 3,4-dihydroxy-3-cyclobutene-1,2-dione and triglycine sulphate and the inorganic compound is from the group consisting of barium-strontium titanate and antimony iodide sulphide.Type: GrantFiled: August 4, 1987Date of Patent: November 8, 1988Assignee: Lehmann & Voss & Co.Inventors: Hans J. Petermann, Klaus Wenderoth, Wolfram H. O. Krieger
-
Patent number: 4755557Abstract: A molding composition is provided which, through the use of a lactone monomer, improves the surface characteristics of the molded composite. In particular, the use of .epsilon.-caprolactone (oxepane-2-one) provides a smoother surface and enhanced dimensional stability.Type: GrantFiled: June 19, 1986Date of Patent: July 5, 1988Assignee: Union Carbide CorporationInventors: Kenneth E. Atkins, Raymond C. Gandy
-
Patent number: 4675426Abstract: There is provided curable compositions of free-radical polymerizable organic monomers and polymers and cyclicsilylpinacoles which can be used in combination to make such curable compositions.Type: GrantFiled: June 11, 1986Date of Patent: June 23, 1987Assignee: General Electric CompanyInventor: James V. Crivello
-
Patent number: 4661594Abstract: Compounds of the formula I or II, ##STR1## wherein m is 1 or 2, A is branched or unbranched 1,2- or 1,3-alkylene, or o-phenylene, E is a group III or IIIa, R is hydrogen or methyl, R.sup.1 and R.sup.3 are hydrogen, alkyl, alkenyl, aralkyl, alkanoyl, alkenoyl, benzoyl or cyanomethyl, R.sup.2 is a radical of valency m and R.sup.4 is a monovalent radical, are effective processing stabilizers for polymers, in particular for polyolefins, and additionally have a stabilizing action against damage by light.Type: GrantFiled: February 19, 1985Date of Patent: April 28, 1987Assignee: Ciba-Geigy CorporationInventors: Michael Rasberger, Peter Hofmann, Hans R. Meier, Paul Dubs
-
Patent number: 4654386Abstract: A ketene dimer aqueous dispersion for paper sizing comprising a ketene dimer compound, an acrylamide type polymer having cationic groups and optionally an anionic dispersant and an aqueous medium is disclosed. This dispersion has a ketene dimer content as high as about 25 -30% and good storage stability.Type: GrantFiled: September 4, 1985Date of Patent: March 31, 1987Assignee: Dic-Hercules Chemicals, Inc.Inventors: Tetsuya Hara, Toshiyuki Hakata, Keigo Goshiki
-
Patent number: 4621111Abstract: A process for increasing the viscosity of a hydrocarbon liquid having a viscosity of at least about 10 cP which includes the steps of:(a) forming a first solution of an organic hydrocarbon liquid and a hydrolyzed Ziegler-Natta ester containing copolymer of an alpha-olefin and a vinyl alkylenecarboxylic acid having an acid content of from about 0.01 to 10 mole percent and a molecular weight of about 100,000 to about 10,000,000, wherein said copolymer of said alpha-olefin and said vinyl alkylenecarboxylic acid has the formula: ##STR1## wherein Z is a mixture of H and an alkyl group having about 1 to about 25 carbon atoms, wherein H comprises about 55 to about 99 mole % of Z, R.sub.1 is an alkyl group having about 1 to about 25 carbon atoms, R.sub.2 is an alkylene group having about 1 to about 17 carbon atoms, x is about 99.99 to about 95.0 mole %, more preferably about 99.95 to about 97.0 and most preferably about 99.90 to about 98.Type: GrantFiled: December 2, 1985Date of Patent: November 4, 1986Assignee: Exxon Research and Engineering CompanyInventors: Ilan Duvdevani, Donald N. Schulz, Kissho Kitano, Dennis G. Peiffer
-
Patent number: 4564693Abstract: A process for stabilizing organopolysiloxanes against changes in viscosity which comprises reacting organopolysiloxanes containing phosphonitrile chlorides or reaction products thereof with at least one lithium compound which forms lithium chloride when reacted with the chlorine bonded to the phosphorous compound.Type: GrantFiled: August 2, 1985Date of Patent: January 14, 1986Assignee: Wacker-Chemie GmbHInventor: Manfred Riederer