Spiro Ring Patents (Class 524/120)
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Patent number: 4992505Abstract: Disclosed are flame retardant polyetherimide ester compositions comprising:(i) at least one polyetherimide ester resin; and(ii) a flame retardant effective amount of a mixture comprising (a) at least one polyphosphonate ester, and (b) at least one ammonium polyphosphate.Type: GrantFiled: July 7, 1988Date of Patent: February 12, 1991Assignee: General Electric CompanyInventor: Nan-I Liu
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Patent number: 4985481Abstract: A solid stabilizer composition for synthetic polymers is formed by a solid, continuous phase and by a solid dispersed phase in said continuous phase, wherein the continuous phase is constituted by amorphous 2,2'-oxamido-bis[ethyl-3-(3,5-di-tert.-butyl-4-hydroxyphenyl)-propionate] and the dispersed phase is constituted by an amorphous, or crystalline, or partially amorphous and partially crystalline organic phosphite, with the weight ratio of said continuous phase to said dispersed phase being comprised within the range of from 9:1 to 1:9.The process for preparing said solid composition and its use in the stabilization of synthetic polymers are disclosed.Type: GrantFiled: September 19, 1989Date of Patent: January 15, 1991Assignee: Enichem Synthesis, S.p.A.Inventors: Carlo Neri, Nereo Nodari, Giovanni Sandre
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Patent number: 4983657Abstract: A stabilizer composition for polymer materials, especially for polyolefin based on a combination of alkylated aralkylphenol and bis-[aralkylphenyl] pentaerythritol-diphospite.Type: GrantFiled: May 31, 1989Date of Patent: January 8, 1991Assignee: Vyskumny ustav chemickej technologie vyskumna a vyvojova organizaciaInventors: Antonin Humplik, Maria Benckova, Pavol Caucik, Julius Durmis, Marcela Goghova, Milan Karvas, Ivo Orlik, Marta Povazancova
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Patent number: 4966931Abstract: The present invention disclosed herein is connected with a polypropylene resin composition giving off no corrosive and poisonous gases, having excellent moldability, providing molded articles with excellent mechanical strength and high flame retardance. The composition of the present invention is composed of predetermined amounts of a polypropylene resin, a polyethylene resin, polyammonium phosphate or polyammonium phosphate modified by melamine resin and a 1,3,5-triazine derivative. This composition may additionally contain a predetermined amount of one or more of specific thiophosphites and may further contain a predetermined amount of an olefinic synthetic rubber or elastomer and a crosslinking agent.Type: GrantFiled: January 19, 1989Date of Patent: October 30, 1990Assignee: Chisso CorporationInventors: Shinichi Akitaya, Toru Fukazawa, Yutaka Nozokido, Nobuchika Tabata
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Patent number: 4966960Abstract: A process and nylon release sheet for manufacturing printed circuit boards from epoxy prepregs is disclosed. In such process layers of the prepregs are separated from one another by a release sheet. The release sheet comprises an aliphatic or aromatic nylon or nylon copolymer which is a condensation product of a dicarboxylic acid and a diamine. The nylon film contains a heat stabilizer and an inorganic particulate antiblock additive, e.g. diatomaceous earth, glass beads, amorphous silica, talc, mica and molybdenum disulphide. The nylon may be toughened by the addition of a phosphorus-containing catalyst or an epoxide.Type: GrantFiled: November 2, 1988Date of Patent: October 30, 1990Assignee: Du Pont Canada Inc.Inventors: Peter A. Sipos, Erica M. Besso
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Patent number: 4965301Abstract: In thermal stabilization of poly(.alpha.-olefin) fibers, such as a melt spun polypropylene, in which the poly(.alpha.-olefin) contains a hindered phenol, an organic phosphite, a hindered amine, and a metal salt of a fatty acid, the further inclusion of an alkali metal phosphate, such as sodium phosphate, results in improved thermal stability of the finished fiber.Type: GrantFiled: March 7, 1988Date of Patent: October 23, 1990Assignee: Phillips Petroleum CompanyInventor: James C. Leininger
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Patent number: 4957954Abstract: Polyvinyl chloride resin stabilizer compositions are provided, comprising a 2,2,6,6-tetramethyl piperidinyl compound and an ammonium or metal perchlorate; and also stabilized polyvinyl chloride resin compositions containing such stabilizers, and optionally including a plasticizer, and particularly as molded articles with polyurethane foam backing.Type: GrantFiled: January 25, 1989Date of Patent: September 18, 1990Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Shunichi Iizuka, Yoshiyuki Sakamaki, Noriyuki Shimoyama
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Patent number: 4957956Abstract: A solid stabilizer composition for organic polymers is formed by a solid, continuous phase and by a dispersed phase in said continuous phase, wherein the continuous phase is constituted by amorphous tetrakis-[3-(3,5-di-tert.-butyl-4-hydroxyphenyl)-propionyloxymethyl]-metha ne and the dispersed phase is constituted by an either amorphous or crystalline organic phosphite, in the form of particles with a particle size of from 10 .mu.m to 2 mm, with the weight ratio of said continuous phase to said dispersed phase being comprised within the range of from 9:1 to 1:9.The processes for preparing said solid stabilizer composition and its use in the stabilization of organic polymers are disclosed.Type: GrantFiled: February 11, 1988Date of Patent: September 18, 1990Assignee: Enichem Synthesis S.p.A.Inventors: Carlo Neri, Nereo Nodari, Erik Bersanetti, Giovanni Sandre
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Patent number: 4956407Abstract: A polymer composition comprises a polymer blend comprising a polyester and a polycarbonate or another polymer blend comprising alpha-methylstyrene-modified ABS resin and at least one polymer selected from a polycarbonate, a saturated polyester, polyphenylene ether, a polyamide and a polyacetal and an organic phosphite compound having the formula (I): ##STR1## in which R is an alkyl having 1 to 9 carbon atoms.Type: GrantFiled: August 28, 1989Date of Patent: September 11, 1990Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Kazushige Funasaki, Kenji Tajima, Toshinori Yukino, Hiroshi Yamanoi
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Patent number: 4912198Abstract: Cyclic carbonate oligomers are stabilized according to the present invention by admixing a composition containing cyclic carbonate oligomers with an amount of an organic phosphite sufficient to substantially prevent premature polymerization of the oligomers.Type: GrantFiled: January 31, 1989Date of Patent: March 27, 1990Assignee: General Electric CompanyInventor: Luca P. Fontana
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Patent number: 4912156Abstract: A polyolefin composition comprises 100 parts by weight of a polyolefine which has been produced with use of a Ziegler catalyst and has a part or residue of the catalyst left therein, 0.005 to 1 part by weight of a phenol compound having the formula (I) and 0.005 to 1 part by weight of an organic phosphite compound having the formula (II). ##STR1## in which R is a residue group of an alcohol being monohydric, dihydric, trihydric or terahydric, R1 is methyl or tert.-butyl, R2 is an alkyl, --CH2CH2COOR3 or --COOR3, R3 being an alkyl, an aryl or an alkylaryl, and n is a number of 1 to 4.Type: GrantFiled: July 27, 1988Date of Patent: March 27, 1990Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Masaki Yagi, Tohru Haruna, Takashi Takeuchi, Toshinori Yukino
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Patent number: 4888369Abstract: Disclosed is a high energy radiation resistant, polypropylene composition. It consists essentially of substantially crystalline normally solid polypropylene having a narrow molecular weight distribution, and, dispersed therein at a concentration effective to increase substantially the high energy radiation resistance of the polypropylene, a synergistic mixture of:(1) a hindered amine component,(2) a hindered phenolic component, and(3) a phosphorous containing component,the weight ratios of component (1) to component (2) to component (3) being about 1:(0.1-2):(0.1-2).Also disclosed are radiation sterilized articles in which at least part of the material of construction comprises the polypropylene composition.Type: GrantFiled: April 24, 1987Date of Patent: December 19, 1989Assignee: Himont IncorporatedInventor: Edward P. Moore, Jr.
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Patent number: 4888371Abstract: Bis(2,6-di tert butyl-4-branched propyl or butyl phenyl)-pentaerythritol spiro phosphites are provided having the formula: ##STR1## wherein R is a branched propyl or butyl group, such as isopropyl, iso-butyl, or sec-butyl, as well as synthetic resin compositions having enhanced resistance to deterioration upon exposure to the heat and light comprising such as bis(2,6-di-t-butyl-4-branched propyl or butyl phenyl)pentaerythritol spiro phosphites.Type: GrantFiled: November 13, 1987Date of Patent: December 19, 1989Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Kenji Tajima, Tetsuo Tsuboi, Ryozo Arata
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Patent number: 4882227Abstract: There is provided an electric conductive resin composition formed into a pellet, which includes an electric conductive filler comprising electric conductive fibers and a low-melting point metal, and being coated on the surface thereof with a thermoplastic resin. Flux and/or a phosphorus-based antioxidant may be added to the filler. There is also provided an electromagnetic wave shielding molded product prepared by using the electric conductive resin composition mentioned above, wherein the electric conductive fibers dispersed within the molded product are fixed each other through the low-melting point metal.Type: GrantFiled: March 9, 1988Date of Patent: November 21, 1989Assignee: Toshiba Chemical CorporationInventors: Hidehiro Iwase, Keiichi Habata
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Patent number: 4877825Abstract: The invention relates to elasthane fibers which are protected against harmful environmental influences, particularly sunlight and combustion gases, by a synergistic stabilizer combination of(a) highly alkylated, phenolic antioxidants corresponding to the following formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 are C.sub.1 -C.sub.3 alkyl radicals, in addition to which R.sup.3 may be C.sub.4 -C.sub.6 alkyl radicalsand(b) oligomeric, (cyclo)aliphatic phosphorous acid esters (oligomeric phosphites) obtained by reaction of pentaerythritol, perhydrobisphenol A and, optionally, a mono- alcohol with monomeric trialkyl or triaryl phosphites.Type: GrantFiled: March 10, 1989Date of Patent: October 31, 1989Assignee: Bayer AkteingesellschaftInventors: Michael Kausch, Hans-Josef Buysch, Hans Schroer, Carlhans Suling
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Patent number: 4871793Abstract: Polyphenylene sulfide resin compositions are provided having improved light stability and comprising an alkylidene bis(benzotriazolyl phenol) having the formula: ##STR1## wherein: R.sub.1 is selected from the group consisting of hydrogen and alkyl having from one to about eleven carbon atoms;R.sub.2 is selected from the group consisting of alkyl having from one to about twelve carbon atoms; and arylalkyl having from seven to about eighteen carbon atoms; andX is selected from the group consisting of hydrogen; halogen; alkyl having from one to about twelve carbon atoms; aryl alkyl having from seven to about eighteen carbon atoms; alkoxy having from one to about twelve carbon atoms; phenoxy; arylalkoxy having from seven to about eighteen carbon atoms; and phenyl.Type: GrantFiled: January 21, 1987Date of Patent: October 3, 1989Inventors: Yutaka Nakahara, Atsushi Nishimura, Toshio Nakajima
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Patent number: 4855345Abstract: Compounds of the formula I ##STR1## in which n is 1, 2 or 3, R.sup.1 is C.sub.1 -C.sub.5 -alkyl, cyclohexyl or .alpha.-methylcyclohexyl and, if n is 1, X is a group of the formula II or III ##STR2## in which R.sup.2 and R.sup.3 independently of one another are C.sub.1 -C.sub.8 -alkyl or cyclohexyl, Y is a direct bond, --S--, >S.dbd.O or a radical --CR.sup.4 R.sup.5 -- in which R.sup.4 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, phenyl or benzyl and R.sup.5 is hydrogen or C.sub.1 -C.sub.8 -alkyl, and Z is 1,2-alkylene or 1,3-alkylene having not more than 15 carbon atoms or o-phenylene, and, if n is 2, X is a group of the formula IV or V ##STR3## in which R.sup.6 is methyl or ethyl, and, if n is 3, X is a phosphorus atom, are suitable for stabilizing organic material against light-induced and/or thermo-oxidative degradation.Type: GrantFiled: June 10, 1987Date of Patent: August 8, 1989Assignee: Ciba-Geigy CorporationInventors: Siegfried Rosenberger, Hans-Rudolf Meier
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Patent number: 4829110Abstract: Stabilized compositions based on alpha-olefin polymers stabilized against degradation by oxidizing liquids, based on polymers of alpha-olefins such as propylene, containing a phenolic antioxidant, a phosphonite and a sulphur-containing stabilizer chosen from the esters derived from aliphatic polyols and alkylthiodipropionic acids and from combinations of a metal sulfide with one of these esters or with an organic polysulfide and optionally also containing an organic phosphite and an anti-acid agent. These compositions exhibit outstanding resistance to the phenomenon of oxidative degradation produced particularly by the contact with hot washing products of all kinds.Type: GrantFiled: November 18, 1986Date of Patent: May 9, 1989Assignee: Solvay & Cie (Societe Anonyme)Inventors: Roger Van Asbroeck, Serge Blanc
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Patent number: 4829112Abstract: A thermally stable polyolefin resin improved in thermal processing by the incorporation therein of a phenolic compound represented by the general formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, and a phosphite or phosphonite compound of 0.1 to 15 times by weight based on the phenolic compound.Type: GrantFiled: December 3, 1987Date of Patent: May 9, 1989Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tamaki Ishii, Shinichi Yachigo, Taisuke Okita, Manji Sasaki, Chinehito Ebina
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Patent number: 4824885Abstract: Stabilizers for organic polymers, consisting of one or more phosphorus-containing compounds of the family of alkyl- and/or phenyl-phosphites, alkyl- and/or phenyl-phosphonites, alkyl- and/or phenyl-diphosphonites, are directly added to the reaction mixture during the (co)polymerization of .alpha.-olefins or of mixtures thereof with other unsaturated monomers.The so-obtained polymeric compositions result perfectly stabilized, and show a thermo-oxidative resistance higher than that of the same polymeric compositions to which the same antioxidants have been added by a traditional route.Type: GrantFiled: July 6, 1987Date of Patent: April 25, 1989Assignee: Enichem Sintesi S.p.A.Inventors: Ambrogio Magni, Erik Bersanetti
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Patent number: 4812498Abstract: Polycarbonate resin compositions are provided having improved light stability and comprising an alkylidene bis(benzotriazolyl phenol)having the formula: ##STR1## wherein: R.sub.1 is selected from the group consisting of hydrogen and alkyl having from one to about eleven carbon atoms;R.sub.2 is selected from the group consisting of alkyl having from one to about twelve carbon atoms; and arylalkyl having from seven to about eighteen carbon atoms; andX is selected from the group consisting of hydrogen; halogen; alkyl having from one to about twelve carbon atoms; aryl alkyl having from seven to about eighteen carbon atoms; alkoxy having from one to about twelve carbon atoms; phenoxy; arylalkoxy having from seven to about eighteen carbon atoms; and phenyl.Type: GrantFiled: December 22, 1986Date of Patent: March 14, 1989Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Yutaka Nakahara, Atsushi Nishimura, Toshio Nakajima
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Patent number: 4801625Abstract: A flame resistant composition has (1) an organic polymeric substance (such as polypropylene) in intimate contact with (2) an ether, ester, or carbonate derivative of a bicyclic phosphorous compound (such as pentaerythritol phosphate) and (3) a gas producing compound (such as melamine or ammonium polyphosphate).Type: GrantFiled: August 27, 1987Date of Patent: January 31, 1989Assignee: AKZO America Inc.Inventors: William J. Parr, Arthur G. Mack, Paul Y. Y. Moy
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Patent number: 4798836Abstract: Bis-(2,2,6,6-tetramethyl-piperidyl)diimides are provided, having the formula: ##STR1## in which R is selected from the group consisting of hydrogen; oxyl; alkyl and alkenyl having from one to about eighteen carbon atoms; epoxy and hydroxyalkyl having from two to about eight carbon atoms; acyl having from two to about eight carbon atoms; and phenalkyl having from seven to about twelve carbon atoms; and Z is a tetravalent aliphatic or cycloaliphatic hydrocarbon group having from two to about eighteen carbon atoms; and stabilizer and synthetic polymer compositions containing such diimides having improved resistance to deterioration when exposed to light.Type: GrantFiled: October 26, 1987Date of Patent: January 17, 1989Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Motonobu Minagawa, Yutaka Nakahara, Bunji Hirai, Kazuo Sugibuchi
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Patent number: 4795767Abstract: A can carrier composition comprising at least one of each of the following components wherein all parts are by weight based on 100 parts by weight of component (i):(i) a high pressure polyethylene having a density in the range of about 0.918 to about 0.930 gram per cubic centimeter;(ii) a linear polyethylene having a density of less than about 0.925 gram per cubic centimeter in an amount of about 2 to about 35 parts;(iii) polyethylene wax in an amount of about 0.5 to about 5 parts;(iv) a mineral filler coated with a metal salt of a fatty acid in an amount of about 0.05 to about 0.50 parts;(v) a secondary amide in an amount of about 0.02 to about 0.15 part;(vi) an antioxidant in an amount of about 0.02 to about 0.10 part; and(vii) an organic phosphorus compound in an amount of about 0.005 to about 0.05 part.Type: GrantFiled: September 30, 1987Date of Patent: January 3, 1989Assignee: Union Carbide CorporationInventors: Michael J. Turczyk, George M. Harlan
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Patent number: 4788232Abstract: Resinous pigment concentrates comprising at least one pigment and a dispersing additive of a naphthenic extender oil and/or a phosphate ester blended with a major portion of a resinous polymer containing a significant proportion of at least one polymerized conjugated diene monomer, when used for coloring resinous polymers as described, are effective in reducing such defects in finished articles as gels and surface blemishes.Type: GrantFiled: October 23, 1987Date of Patent: November 29, 1988Assignee: Phillips Petroleum CompanyInventor: Donald G. Needham
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Patent number: 4775710Abstract: Disclosed are stabilized linear low-density polyethylene (LLDPE) compositions containing a stabilizing amount of a ring-substituted N-acyl-para-aminophenol. In a preferred embodiment, the latter compound is N-stearoyl-2,6-di-t-butyl-4-aminophenol.Type: GrantFiled: January 21, 1987Date of Patent: October 4, 1988Assignee: Mallinckrodt, Inc.Inventors: Neil Dunski, Henry J. Buehler
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Patent number: 4766164Abstract: Segmented thermoplastic copolyester elastomers containing recurring polymeric long chain ester units derived from phthalic acids and long chain glycols and short chain ester units derived from phthalic acids and 1,4-butanediol or 1,4-butenediol. The elastomers also contain polyvinylpyrrolidone and preferably also contain guanidine stabilizer, phosphorus stabilizer and diphenylamine.Type: GrantFiled: December 1, 1983Date of Patent: August 23, 1988Inventors: Michael D. Golder, Stanley J. Gromelski, Jr.
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Patent number: 4721744Abstract: Polyurethanes are stabilized against yellowing by incorporating a phenolic type compound represented by the general formula (I) ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.3 alkyl group and at least one member selected from a benzotriazole type light stabilizer and a hindered amine type stabilizer.Type: GrantFiled: March 31, 1986Date of Patent: January 26, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Tamaki Ishii, Shinichi Yachigo, Manji Sasaki, Haruki Okamura, Masahisa Shionoya
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Patent number: 4720514Abstract: Resinous pigment concentrates comprising at least one pigment and a dispersing additive of a naphthenic extender oil and/or a phosphate ester blended with a major portion of a resinous polymer containing a significant proportion of at least one polymerized conjugated diene monomer, when used for coloring resinous polymers as described, are effective in reducing such defects in finished articles as gels and surface blemishes.Type: GrantFiled: February 13, 1986Date of Patent: January 19, 1988Assignee: Phillips Petroleum CompanyInventor: Donald G. Needham
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Patent number: 4717745Abstract: Polyacetal resin compositions are stabilized to heat, oxygen and light by incorporation a phenolic type compound represented by the formula ##STR1##Type: GrantFiled: April 4, 1986Date of Patent: January 5, 1988Assignee: Sumitomo Chemical Company, Ltd.Inventors: Tamaki Ishii, Shinichi Yachigo, Manji Sasaki, Haruki Okamura, Masahisa Shionoya
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Patent number: 4710317Abstract: A flame retardant polyolefin resin composition which, when molded, affords a molded product having highly flame retardant properties, no dripping properties, a smooth surface and an excellent appearance and superior resistances to heavy metal deterioration, heat deterioration and weather is provided, which composition consists of (A) 5-60% by weight of a halogen-containing flame retardant, (B) 100-10% by weight of antimony trioxide based on the weight of the halogen-containing flame retardant, (C) 0.5-15% by weight of a crosslinking agent, (D) 0.05-5% by weight of a specified thiophosphite, and (E) the balance % by weight of a polyolefin resin, the total of the quantities of (A), (B), (C), (D) and (E) being 100% by weight. If necessary, a processing aid may be further added to the above flame retardant polyolefin resin composition.Type: GrantFiled: May 20, 1986Date of Patent: December 1, 1987Assignee: Chisso CorporationInventors: Nobuchika Tabata, Shohji Fukumitsu
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Patent number: 4692539Abstract: Pentaerythritol diphosphites corresponding to the formula ##STR1## being useful for stabilizing organic materials against thermal, oxidative and actinic degradation and a process for the preparation thereof.Type: GrantFiled: October 24, 1986Date of Patent: September 8, 1987Assignee: Ciba-Geigy CorporationInventor: John D. Spivack
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Patent number: 4684679Abstract: Polyacetal resin compositions are provided having improved light stability and comprising an alkylidene bis(benzotriazolyl phenol) having the formula: ##STR1## wherein: R.sub.1 is selected from the group consisting of hydrogen and alkyl having from one to about eleven carbon atoms;R.sub.2 is selected from the group consisting of alkyl having from one to about twelve carbon atoms; and arylalkyl having from seven to about eighteen carbon atoms; andX is selected from the group consisting of hydrogen; halogen; alkyl having from one to about twelve carbon atoms; aryl alkyl having from seven to about eighteen carbon atoms; alkoxy having from one to about twelve carbon atoms; phenoxy; arylalkoxy having from seven to about eighteen carbon atoms; and phenyl.Type: GrantFiled: January 6, 1986Date of Patent: August 4, 1987Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Naohiro Kubota, Atsushi Nishimura
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Patent number: 4670483Abstract: This invention relates to flame retarding compositions comprising flame retardants selected from pentate salts and nitrogen-containing phosphates wherein one or both are encapsulated in a material to reduce contacts between the flame retardants during processing and to thus reduce or eliminate pre-reaction between the two flame retardants, which pre-reaction, normally leads to degradation of flameproofing properties of the compositions. The invention is also directed to flame retardant polyurethane compositions containing a polyurethane resin and both of the flame retardants. As between the flame retardants, amount of the phosphate is about 10-99% whereas amount of the pentate salt is about 90-1%, on weight basis. In the polyurethane compositions, combined weight of the two flame retardants is about 10-60%, based on the weight of the polyurethane resin and the two flame retardants.Type: GrantFiled: November 4, 1985Date of Patent: June 2, 1987Assignee: The BF Goodrich CompanyInventors: Dale R. Hall, Robert L. Jackson, Charles V. Purks
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Patent number: 4670493Abstract: Stabilized against degradation by oxidizing liquids, based on polymers of alpha-olefins such as propylene, containing a phenolic antioxidant, a phosphonite and a sulfur-containing stabilizer chosen from the esters derived from aliphatic polyols and alkylthiodipropionic acids and from combinations of a metal sulfide with one of these esters or with an organic polysulfide and optionally also containing an organic phosphite and an anti-acid agent. These compositions exhibit outstanding resistance to the phenomenon of oxidative degradation produced particularly by the contact with hot washing products of all kinds.Type: GrantFiled: January 4, 1985Date of Patent: June 2, 1987Assignee: Solvay & Cie (Societe Anonyme)Inventors: Roger Van Asbroeck, Serge Blanc
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Patent number: 4670491Abstract: Polyolefin compositions which are pigmented with titanium dioxide are rendered actinic radiation stabilized by incorporating therein a C.sub.12-20 alkyl ester of 3,5-di-tert.butyl-4-hydroxybenzoic acid.Type: GrantFiled: August 14, 1985Date of Patent: June 2, 1987Assignee: American Cyanamid CompanyInventors: Joseph A. Stretanski, Frank F. Loffelman
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Patent number: 4668722Abstract: New hindered piperidinoalcohol 1,1,1-trioxyalkanes are disclosed. In the 1,1,1-trioxyalkanes, at least on 1,1,1-trioxyalkane group is linked to the residue of an alcohol linked to the 4-position of a 2,2,6,6-tetraalkylpiperidine compound having 12 to 75 carbon atoms. For each 1,1,1-trioxalkane group, there are 1 to 3 tetraalkylpiperidine groups. The alkyl groups linked to the piperidine ring have from one to five carbon atoms each. The fourth substituent on the carbon atom of the 1,1,1-trioxyalkane is a hydrogen atom or an aliphatic group having one to five carbon atoms.The disclosed 1,1,1-trioxyalkanes protect a variety of synthetic resins against the deteriorative effects of exposure to actinic light.Stabilizer compositions comprising a disclosed 1,1,1-trioxyalkane and a known polymer stabilizer, as well as synthetic resin compositions stabilized with such stabilizer compositions, are also disclosed.Type: GrantFiled: December 13, 1985Date of Patent: May 26, 1987Inventor: Gerry P. Mack
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Patent number: 4666959Abstract: A propylene polymer molding composition which is resistant to discoloration and losses in physical properties upon sterilization by high energy radiation is comprised of a blend of a propylene polymer with small amounts of a polymeric hindered amine, an alkyl phosphite and a specific hindered phenolic antioxidant as necessary additives.Type: GrantFiled: December 10, 1985Date of Patent: May 19, 1987Assignee: El Paso Products CompanyInventors: Paula S. Weissberger, Bennie M. Lucas
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Patent number: 4663374Abstract: A flame-resisting polycarbonate resin composition is disclosed, comprising (a) 100 parts by weight of an aromatic polycarbonate resin comprising (i) a copolymer of a halogenated 4,4'-dihydroxydiphenylalkane and a non-halogenated 4,4'-dihydroxydiphenylalkane or (ii) the copolymer (i) or a homopolymer of the non-halogenated 4,4'-dihydroxydiphenylalkane having incorporated therein a homo-oligomer of the halogenated 4,4'-dihydroxydiphenylalkane and/or a co-oligomer of the halogenated 4,4'-dihydroxydiphenylalkane and the non-halogenated 4,4'-dihydroxydiphenylalkane, (b) 0.001 to 5.0 parts by weight of an organic potassium phosphate, (c) 0.001 to 0.5 parts by weight of an phosphorous ester compound, and (d) 0 to 0.5 part by weight of an organosilicone compound. The resin composition has an improved viscosity characteristic and is, therefore, prevented from dripping during combustion, and does not suffer change in hue or reduction in molecular weight during molding.Type: GrantFiled: January 14, 1985Date of Patent: May 5, 1987Assignee: Mitsubishi Gas Chemical Company, Inc.Inventor: Nobuharu Sonoda
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Patent number: 4656209Abstract: The invention relates to thermoplastic molding compositions based on vinyl chloride polymers and containing, as stabilizer, 0.1 to 5% by weight of an aminouracil of the formula I ##STR1## wherein R.sup.1 is hydrogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.8 cycloalkyl, phenyl, benzyl, C.sub.1 -C.sub.4 hydroxyalkyl, hydroxyphenyl, C.sub.2 -C.sub.8 alkoxyalkyl, C.sub.2 -C.sub.8 alkylthioalkyl, C.sub.6 -C.sub.10 cycloalkoxyalkyl, C.sub.6 -C.sub.10 cycloalkylthioalkyl, C.sub.8 -C.sub.14 aralkoxyalkyl, C.sub.8 -C.sub.14 aralkylthioalkyl, C.sub.7 -C.sub.14 aryloxyalkyl, C.sub.7 -C.sub.14 arylthioalkyl, --NHR.sup.4, in which R.sup.4 is hydrogen, phenyl or chlorine-substituted phenyl, and R.sup.2 and R.sup.3, each independently of the other, are C.sub.2 -C.sub.21 alkyl, C.sub.6 -C.sub.12 aryl or C.sub.7 -C.sub.19 aralkyl, while one of R.sup.2 and R.sup.3 may also be hydrogen.The addition of such aminouracils gives vinyl chloride polymers which are very well protected against heat-induced degradation.Type: GrantFiled: May 17, 1982Date of Patent: April 7, 1987Assignee: Ciba-Geigy CorporationInventors: Wolfgang Wehner, Hermann O. Wirth
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Patent number: 4618633Abstract: A halogen-free self-extinguishing thermoplastic composition comprising as the flame retardant, one or more phosphorus-containing compounds or elemental phosphorous, a polyphenylene ether, a styrene-acrylonitrile copolymer, a phenol/aldehyde resin, a terpolymer of styrene, acrylonitrile and a hydroxy-containing ester of acrylic or methacrylic acid on which a polyphenylene ether is grafted, and optionally, a diene elastomer having grafted thereon styrene and acrylonitrile monomers.Type: GrantFiled: September 5, 1985Date of Patent: October 21, 1986Assignee: BASF AktiengesellschaftInventors: Christof Taubitz, Volker Muench, Juergen Hambrecht, Adolf Echte, Karl H. Illers
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Patent number: 4613638Abstract: Novel phenolic compounds derived from hexides are disclosed which are useful stabilizers of synthetic polymer resins.Type: GrantFiled: August 19, 1985Date of Patent: September 23, 1986Assignee: ICI Americas Inc.Inventors: John F. Stephen, Jerry H. Smith, Makram H. Meshreki
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Patent number: 4600740Abstract: Novel hydroxybenzyl substituted hexaalkyldiphenylmethane derivatives are provided which are useful as stabilizers of resins made from at least one ethylenically unsaturated monomer.Type: GrantFiled: August 15, 1985Date of Patent: July 15, 1986Assignee: ICI Americas Inc.Inventors: John F. Stephen, Jerry H. Smith, Makram H. Meshreki
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Patent number: 4598113Abstract: Novel hydroxyalkylarylalkanoates of ethoxylated bisphenol A are provided which are useful as stabilizers of resins made from at least one ethylenically unsaturated monomer. A process for manufacture of these stabilizers is also provided.Type: GrantFiled: August 15, 1985Date of Patent: July 1, 1986Assignee: ICI Americas Inc.Inventors: John F. Stephen, Jerry H. Smith, Makram H. Meshreki
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Patent number: 4590231Abstract: N,N-Dibenzylhydroxylamine and other selected hydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosynergists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.Type: GrantFiled: July 23, 1984Date of Patent: May 20, 1986Assignee: Ciba-Geigy CorporationInventors: Raymond Seltzer, Ambelal R. Patel, Peter W. Stewart, Charlene White
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Patent number: 4588764Abstract: Thermoplastic blends of a polyphenylene ether resin, alone or together with supplementary polymers, and a diphosphite compound or compounds are described. The blends exhibit good processability and initial color and are moldable into articles of various shapes and sizes.Type: GrantFiled: August 16, 1984Date of Patent: May 13, 1986Assignee: General Electric CompanyInventor: Gim F. Lee, Jr.
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Patent number: 4585818Abstract: Flame retardant molding compounds comprising polymers of methyl methacrylate having an average molecular weight between 1.times.10.sup.5 and 2.times.10.sup.5, which molding compounds contain from 8 to 15 weight percent of at least one chloroalkylphosphoric acid ester of the formula ##STR1## wherein R.sub.1 is alkyl or ##STR2## and R.sub.2 is hydrogen, methyl, ethyl, or chloro-substituted methyl or ethyl.Type: GrantFiled: March 19, 1984Date of Patent: April 29, 1986Assignee: Rohm GmbHInventors: Karl A. Jung, Karl-Heinz Jakob, Manfred Munzer, Wilhelm Wopker
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Patent number: 4542170Abstract: This invention relates to flame retarding compositions comprising a pentate salt selected from melammonium pentate and the pentate salt of ammelide, and a nitrogen-containing phosphate selected from amine phosphates, ammonium phosphates, and ammonium polyphosphates in amount of 25 to 95 volume % phosphate to 75 to 5 volume % pentate salt which produce unexpected results in thermoplastic polyurethane compositions in terms of oxygen index, and UL-94 rating. This invention also pertains to polyurethane compositions containing a thermoplastic polyurethane resin and a flame retarding combination of a pentate salt and a phosphate, defined above, in amount of 10 to 35 volume % of the two flame retarding components based on the total volume of the resin plus the two flame retarding componets. An aryl phosphate can also be included to enhance the flame retarding properties of thermoplastic polyurethanes. Such polyurethane compositions are intumescent, drip retardant, and are halogen-free.Type: GrantFiled: January 22, 1985Date of Patent: September 17, 1985Assignee: The B. F. Goodrich CompanyInventors: Dale R. Hall, Robert L. Jackson
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Patent number: 4540727Abstract: The high temperature aging of polyamides is substantially improved by incorporating therein an antioxidant and an oxide of a metal of Group II or III of the Periodic Table, preferably a crystalline aluminosilicate such as a synthetic zeolite. The amount of antioxidant is preferably 1 to 5% and the amount of metal oxide is preferably 0.5 to 5%. Polyamides which can be stabilized in this way include Nylon-6, Nylon-11 and Nylon-12.Type: GrantFiled: October 29, 1982Date of Patent: September 10, 1985Assignee: Raychem CorporationInventor: Christine E. Vogdes
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Patent number: 4520152Abstract: Flame retardant compositions comprising a polyphenylene ether resin, a styrene resin and a cyclic phosphonate have excellent appearance and physical properties after molding. Especially useful is diphenyl pentaerythritol diphosphonate.Type: GrantFiled: June 11, 1982Date of Patent: May 28, 1985Assignee: General Electric CompanyInventor: Robert J. Axelrod