Oxygen Ring Atom Patents (Class 524/117)
-
Patent number: 5322869Abstract: Styrene-based resin composition containing as main components (A) 100 parts by weight of a styrene-based polymer having mainly a syndiotactic configuration and (B) 0.01 to 25 parts by weight of one or more nucleating agents selected from the group consisting of (1) metal salts of organic acids having an average particle diameter of not more than 50 .mu.m, (2) inorganic compounds having an average particle diameter of not more than 50 .mu.m, (3) organophosphorus compounds having an average particle diameter of not more than 50 .mu.m, and (4) metal salts of ionic hydrocarbon copolymer, and a process for producing styrene-based resin moldings by molding the above styrene-based resin composition at a temperature between room temperature and 200.degree. C. The resin composition of the present invention is suitable for injection molding and extrusion molding, and provides moldings which are of high crystallinity and are excellent in heat resistance, solvent resistance, chemical resistance and so forth.Type: GrantFiled: December 18, 1991Date of Patent: June 21, 1994Assignee: Idemitsu Kosan Co., Ltd.Inventors: Komei Yamasaki, Takashi Sumitomo, Toshikazu Ijitsu, Hiroshi Yamada, Toshihiro Furusawa
-
Patent number: 5292785Abstract: A stabilized composition of matter which comprises an organic material subject to oxidative, thermal or actinic degradation, and an effective stabilizing amount of a bisphosphite typified by formula I ##STR1## wherein n has a value of 0 or 1; Q is --CR.sup.1 R.sup.2 where R.sup.1 and R.sup.2 are independently hydrogen, alkyl or aryl; Y.sup.1, Y.sup.2, Y.sup.3, Y.sup.4, Z.sup.2, Z.sup.3, Z.sup.4 and Z.sup.5 are independently hydrogen, alkyl, cycloalkyl, aralkyl, aryl, cyano, acyl and hydrogen; and each Z represents an identical or different alkyl, aryl, aralkyl or alkaryl group.Type: GrantFiled: November 30, 1992Date of Patent: March 8, 1994Assignee: Ciba-Geigy CorporationInventors: Stephen D. Pastor, Sai P. Shum
-
Patent number: 5278279Abstract: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.Type: GrantFiled: August 31, 1992Date of Patent: January 11, 1994Assignee: Daicel Chemical Industries, Ltd.Inventors: Tatsuya Kanno, Tsutomu Yamato, Yasuhiro Oshino, Yutaka Fukuda, Yoshihiro Iguchi, Takaaki Kuwana, Toshihiro Matsumoto
-
Patent number: 5250593Abstract: A polyolefin composition comprising a polyolefin, and the following components:(A) a phenolic compound which is a derivative of pentaerythritol,(B) a phenolic acrylate compound,(C) at least one organic phosphorous compound such as bis(2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite. This composition is stable against thermal processing, thermal oxidation and discoloration, and it is especially useful for fibers and films. Further incorporation of a polycondensate of dimethyl succinate with 1-(2-hydroxyethyl)-4-hydroxy-2,2,6,6-tetramethylpiperidine is effective to inprove the light stability of the composition.Type: GrantFiled: September 3, 1992Date of Patent: October 5, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Tamaki Ishii, Shinichi Yachigo, Fumitoshi Kojima, Kanako Ida
-
Patent number: 5240622Abstract: Composition containing an organic polymer, with the exception of epoxy-based polymers, a lubricant, a metal-working fluid or a hydraulic fluid and, as stabilizer, at least one dioxaphosphorinane compound of the formulae ##STR1## wherein R.sub.1 to R.sub.6, R' and R" are independently hydrogen, alkyl, alkenyl, cycloalkyl or aryl, X.sup.+ is hydrogen, a metal cation or quaternary nitrogen atom, A is a n-valent hydrocarbyl moiety, n is 1 to 4, and m is 1 or 2.These compositions are stabilized against thermal, oxidative and/or actinic degradation. The abovementioned compounds are also very suitable as wear-resistant agents and high-pressure additives in lubricants.Some of the dioxaphosphorinane compounds are novel.Type: GrantFiled: June 24, 1991Date of Patent: August 31, 1993Assignee: Ciba-Geigy CorporationInventor: Peter Nesvadba
-
Patent number: 5238979Abstract: Stabilizers for enhancing the resistance of synthetic resins to deterioration when exposed to elevated temperatures and/or ultraviolet light comprising from about 0.001 to about 10 parts by weight of a bisphenol phosphite having the formula ##STR1## wherein R.sub.1 is tertiary-butyl or tertiary-amyl, R.sub.2 is alkyl having from one to about nine carbon atoms, R.sub.3 is hydrogen or alkyl having from one to about four carbon atoms, and R.sub.4 is alkyl having from one to about thirty carbon atoms; and from about 0.001 to about 10 parts by weight of a phenol having the formula ##STR2## wherein R.sub.5 is alkyl having from one to about four carbon atoms; and R.sub.6 is hydrogen or alkyl having from one to about four carbon atoms; and stabilized synthetic resin compositions comprising such stabilizers.Type: GrantFiled: March 12, 1990Date of Patent: August 24, 1993Assignee: Asahi Denka Kogyo K.K.Inventors: Tohru Haruna, Kazunori Nishikawa
-
Patent number: 5234980Abstract: There is provided a fire retardant polycarbonate resin composition comprising a polycarbonate resin, a specific partially esterified phosphoric acid metal salt and a specific partially esterified phosphoric acid in specific proportions. The polycarbonate resin composition can provide a transparent molded article which are excellent in fire retardance and heat stability.Type: GrantFiled: June 30, 1992Date of Patent: August 10, 1993Assignee: Teijin Chemicals, Ltd.Inventor: Yoji Ohira
-
Patent number: 5231124Abstract: Thermoplastic molding composition based on polyalkylene terephthalate, aromatic polycarbonate and, optionally, rubber-elastic polymer, which are provided with special phosphorus stabilizers, show good paintability and paint adhesion and, even after painting, show favorable low-temperature toughness and heat resistance.Type: GrantFiled: November 25, 1990Date of Patent: July 27, 1993Assignee: Bayer AktiengesellschaftInventors: Karsten-Josef Idel, Jurgen Kirsch, Friedemann Paul, Lothar Meier, Hans-Georg Gehrke
-
Patent number: 5191000Abstract: The flameproofed, non-dripping polyalkylene terephthalate molding compounds according to the invention based on phosphoric acid esters may be used for the production of moldings. The fire behavior of the polyalkylene terephthalate molding compounds is improved by the addition of certain phosphoric acid esters, a surprising reduction in the phosphorus content of the molding compounds being achieved at the same time, particularly in combination with highly heat-resistant thermoplastics.Type: GrantFiled: May 10, 1991Date of Patent: March 2, 1993Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott
-
Patent number: 5145941Abstract: The invention is a polyester and a method for producing a polyester fiber which has a combination of flame resistance and low pilling properties. The method comprises forming a polyester fiber made from a blend of two polyester polymers, one polyester polymer containing an oxysilicon compound and the second polyester polymer containing pentaerythritol and a phosphinic acid in the amount between 0.5 and 20 mole percent of the terephthalate acid and monomer. In particular, the invention also comprises the enhanced fiber formed by the process, as well as the fabrics having a pilling of about 3 to less than 5 as measured in accordance with ASTM D-3512-82.Type: GrantFiled: November 22, 1991Date of Patent: September 8, 1992Assignee: Hoechst Celanese CorporationInventors: Jerry T. Munday, Theodore D. Meiss
-
Patent number: 5132346Abstract: Compounds of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, C.sub.1 -C.sub.6 alkyl, or phenyl or naphthyl, each unsubstituted or substituted by 1 to 3 C.sub.1 -C.sub.4 alkyl groups, R.sub.3 and R.sub.4 are each independently of the other hydrogen or C.sub.1 -C.sub.4 alkyl, with the proviso that R.sub.3 and R.sub.4 may not simultaneously be hydrogen, and R.sub.5 is hydrogen, C.sub.1 -C.sub.6 alkyl, or phenyl or naphthyl, each unsubstituted or substituted by 1 to 3 C.sub.1 -C.sub.4 alkyl groups, and X is oxygen or sulfur, are very suitable flame retardants for polymers.Type: GrantFiled: August 7, 1991Date of Patent: July 21, 1992Assignee: Ciba-Geigy CorporationInventor: Peter Flury
-
Patent number: 5126387Abstract: A flame retardant composition comprises at least one cyclic phosphonate ester and at least one phosphono amide. The ester and the amide are present in a ratio by weight of 0.1 to 2:1. A co-curing agent (e.g. urea, ethylene urea or an amino-triazine) may be included. The composition may also contain a non-rewetting agent and/or a softening or conditioning agent. The composition is used for the flame retardant treatment of a fabric by first impregnating the fabric with an aqueous solution of the composition and then heating the impregnated fabric at at least 100.degree. C. and under acid pH conditions.Type: GrantFiled: March 1, 1991Date of Patent: June 30, 1992Assignee: Albright & Wilson LimitedInventor: Geoffrey Hand
-
Patent number: 5112891Abstract: A polycarbonate resin composition improved in heat resistance by the addition of an organic cyclic phosphite represented by the general formula: ##STR1## wherein R.sub.1 represents an alkyl group having 1 to 9 carbon atoms; R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and R.sub.3 represents an alkyl group having 1 to 30 carbon atoms.Type: GrantFiled: August 28, 1990Date of Patent: May 12, 1992Assignee: Asahi Denka Kogyo Kabushiki KaishaInventors: Tohru Haruna, Masayuki Takahashi, Toshinori Yukino
-
Patent number: 5064885Abstract: This invention relates to aliphatic polycarbonates including sequential copolymers based on cyclic aliphatic carbonates and esters and block copolymers of blocks of polymerised cyclic aliphatic carbonates and blocks of polymerised vinyl compounds stabilized against thermal degradation containing 0.01 to 3.0% by weight, based on polymer, of a compound of trivalent phosphorus.Type: GrantFiled: February 11, 1991Date of Patent: November 12, 1991Assignee: Bayer AktiengesellschaftInventors: Friedemann Muller, Edgar Leitz, Herbert Eichenauer, Karl-Heinz Ott, Hans-Josef Buysch
-
Patent number: 5063264Abstract: A first crystalline polyolefin composition is provided, comprising 100 parts by weight of a crystalline polyolefin, (A) from 0.001 to 1 part by weight of a fluorophosphite compound represented by formula (I): ##STR1## wherein R represents an alkylidene group having from 1 to 4 carbon atoms or a sulfur atom; Ar.sub.1 and Ar.sub.2, which may be the same or different, each represents an alkylarylene group or a cycloalkylarylene group; and n represents 0 or 1, and (B) from 0.001 to 1 part by weight of at least one of (1) an aliphatic monocarboxylic acid salt with lithium or sodium, (2) a dithiocarbamic acid salt with lithium, sodium or potassium, (3) a 2-mercaptobenzothiazole salt with lithium, sodium or potassium, (4) a 2-mercaptobenzimidazole salt with lithium, sodium or potassium and (5) a benzotriazole salt with lithium, sodium or potassium.Type: GrantFiled: August 20, 1990Date of Patent: November 5, 1991Assignee: Chisso CorporationInventor: Hirokazu Nakajima
-
Patent number: 5055507Abstract: Stabilizers for enhancing the resistance of synthetic resins to deterioration when exposed to elevated temperatures and/or ultraviolet light comprising from about 0.001 to about 10 parts by weight of a bisphenol phosphite having the formula ##STR1## wherein R.sub.1 is tertiary-butyl or tertiary-amyl, R.sub.2 is alkyl having from one to about nine carbon atoms, R.sub.3 is hydrogen or alkyl having from one to about four carbon atoms, and R.sub.4 is alkyl having from one to about thirty carbon atoms; and from about 0.001 to about 10 parts by weight of a phenol having the formula ##STR2## wherein R.sub.5 is alkyl having from one to about four carbon atoms; and stabilized synthetic resin compositions comprising such stabilizers.Type: GrantFiled: March 1, 1990Date of Patent: October 8, 1991Assignee: Asahi Denka Kogyo K.K.Inventors: Tohru Haruna, Kazunori Nishikawa
-
Patent number: 5039723Abstract: A synthetic resin composition stabilized particularly against the deterioration caused by the action of heat and light, which comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic phosphite compound represented by the following general formula (I) and 0.001 to 10 parts by weight of a hindered amine compound having a group represented by the following general formula (II) in its molecule: ##STR1## wherein R.sub.1 stands for a tert-butyl or tert-amyl group; R.sub.2 stands for a C.sub.1.about.9 alkyl group; R.sub.3 stands for a hydrogen atom or a C.sub.1.about.4 alkyl group and R.sub.4 stands for a C.sub.1.about.30 alkyl group.Type: GrantFiled: July 31, 1989Date of Patent: August 13, 1991Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Tohru Haruna, Kazunori Nishikawa
-
Patent number: 5034441Abstract: Disclosed is a styrene-based resin composition which comprises (a) 100 parts by weight of styrene-based polymer having a high degree of syndiotactic configuration, (b) 0.01 to 15 parts by weight of at least one nucleating agent selected from an organophosphorus compound and a metal salt of an organic acid, and (c) 0.01 to 15 parts by weight of at least one component selected from a polyoxyalkylene compound, a fatty acid and a derivative thereof.The composition can produce various molding products with excellent mold-releasing property, surface gloss, bending strength, bending modulus and heat resistance.Type: GrantFiled: July 27, 1990Date of Patent: July 23, 1991Assignee: Idemitsu Kosan Co., Ltd.Inventors: Akikazu Nakano, Takashi Sumitomo
-
Patent number: 5030674Abstract: Flame retardant compositions comprise linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and a minor quantity, relative to the polymer, of a thermally stable cyclic phosphonate ester and polytetrafluoroethylene resin.Type: GrantFiled: July 23, 1990Date of Patent: July 9, 1991Assignee: Shell Oil CompanyInventor: Vincent J. Notorgiacomo, Jr.
-
Patent number: 5017633Abstract: A filled polyolefin, particularly polypropylene, containing a sterically hindered phenol antioxidant and a compound of formula I and/or II ##STR1## in which R is unsubstituted phenyl or phenyl substituted by 1 or 2 C.sub.1-12 alkyl groupsn is 0 or 1 andA is a monofunctional or difunctional residue of a phenyl, diphenyl, diphenyl ether, diphenylmethane or dibenzofuran,as processing stabilizer has good long-term stability even in the absence of conventional sulphur-containing co-stabilizers.Type: GrantFiled: July 6, 1989Date of Patent: May 21, 1991Assignee: Sandoz Ltd.Inventor: Guenther Tscheulin
-
Patent number: 5013776Abstract: A flame-retardant polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin and 0.001 to 5.0 parts by weight of at least one metal salt of an organic phosphoric acid ester represented by the following general formula [I] ##STR1## wherein R.sub.1 and R.sub.2, independently from each other, represent an alkyl or aryl group which is substituted or unsubstituted by halogen, at least one of R.sub.1 and R.sub.2 is an aryl group and when both R.sub.1 and R.sub.2 are aryl groups, they may be bonded to each other either directly or through an alkylene group or may form one fused ring, and M represents an alkali metal, and optionally 0.01 to 2.0 parts by weight of a micro-fibrous polytetrafluoroethylene.Type: GrantFiled: May 16, 1989Date of Patent: May 7, 1991Assignee: Teijin Chemicals, Ltd.Inventors: Kouji Ishihata, Youichi Hironaka, Hisanaga Shimizu, Kazuo Kitamura, Takeshi Imagawa
-
Patent number: 4940772Abstract: A polyester, wherein pendent phosphorus atoms are bound to the main chain of the polyester, having an excellent flame resistance and a high intrinsic viscosity can be stably produced without deteriorating the properties of said polyester by preliminarily copolymerizing a polyester with a specific unsaturated compound and then reacting the unsaturated bond thus-formed with a specific phosphorus compound having a P-H bond.Type: GrantFiled: November 20, 1989Date of Patent: July 10, 1990Assignee: Nippon Ester Co., Ltd.Inventors: Tetsuo Matsumoto, Keizo Tsujimoto, Katsuto Matsuzawa, Shunichiro Hamada, Kouzi Shinogi, Satomi Nagai, Takayuki Imamura, Akiko Kuroyanagi
-
Patent number: 4929654Abstract: Disclosed are novel cyclic phosphite compounds having the formula ##STR1## wherein each R.sup.1 is independently selected from hydrogen, alkyl, aralkyl, aryl, carboxy, alkoxycarbonyl or halogen;each R.sup.2 is independently selected from hydrogen, alkyl, aralkyl, alkoxy, aryl, carboxy, alkoxycarbonyl or halogen;R.sup.3 is (a) hydrogen, alkyl, cyclohexyl or aryl when n is 1; (b) alkylene, cyclohexylene, cyclohexylenedialkylene, arylene or a divalent group having the formula ##STR2## wherein R.sup.1 and R.sup.2 are defined above and A.sup.2 is 1,3- or 1,4-phenylene when n is 2; (c) alkanetriyl when n is 3; or alkanetetrayl when n is 4;n is 1, 2, 3 or 4; andA.sup.1 is 1,3-phenylene.Also disclosed are synthetic polymeric materials stabilized with one of the above compounds and phosphite chloride compounds from which the above compounds are prepared.Type: GrantFiled: October 4, 1988Date of Patent: May 29, 1990Assignee: Eastman Kodak CompanyInventors: Richard H. S. Wang, Garry L. Myers
-
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
-
Patent number: 4885326Abstract: A synthetic resin composition comprises 100 parts by weight of a synthetic resin, 0.001 to 10 parts by weight of a cyclic alkylphosphite compound of 2,2'-alkylidene-bisphenol (I) and 0.001 to 10 parts by weight of beta-(3,5-dialkyl-4-hydroxyphenyl)-propionic acid ester (II) and is stabilized to light and heat.Type: GrantFiled: March 24, 1989Date of Patent: December 5, 1989Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Tohru Haruna, Kazunori Nishikawa, Mitsuhiro Hamajima
-
Patent number: 4882374Abstract: Disclosed are novel cyclic phosphite compounds having the formula ##STR1## wherein R.sup.1 is hydrogen, alkyl or aralkyl; R.sup.2 is hydrogen or alkyl; R.sup.3 is alkyl or aryl; and R.sup.4 and R.sup.5 each is alkyl. Also disclosed are polyolefin compositions stabilized with one or more of the above compounds.Type: GrantFiled: February 6, 1989Date of Patent: November 21, 1989Assignee: Eastman Kodak CompanyInventors: Richard H. S. Wang, Garry L. Myers
-
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
-
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
-
Patent number: 4827010Abstract: A process for preparing cyclic phosphonic monoesters comprising subjecting aryloxyphosphines of defined formulae to flash pyrolysis, is provided. The aryloxyphosphines are those having the general formula ##STR1## where Ar is aryl and R is a hydrocarbyl radical capable of forming unsaturated hydrocarbon on severance of the C--O linkages.Type: GrantFiled: August 25, 1987Date of Patent: May 2, 1989Assignee: The British Petroleum Company p.l.c.Inventors: John I. G. Cadogan, Ian Gosney, Peter M. Wright, deceased
-
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
-
Patent number: 4820772Abstract: A polyolefin composition having a superior resistance to impact-whitening, luster, impact resistance, mechanical strength and stiffness, particularly, mechanical strength and stiffness is provided, which composition is obtained by (1) blending (B) a high density ethylene polymer, (C) a non-crystalline ethylene-propylene random copolymer or a non-crystalline ethylene-propylene-non-conjugated diene random copolymer and a phosphate compound expressed by the following formula (I) (hereinafter referred to as compound (a)): ##STR1## wherein R.sub.1 represent sulfur or an alkylidene group of 1 to 4 carbon atoms; R.sub.2 and R.sub.3 each represent a hydrogen atom or the same or different alkyl groups of 1 to 8 carbon atoms; M represents a monovalent, divalent or trivalent metal atom; m represents 0 or 1; and n represents an integer of 1 to 3, with (A) a crystalline .alpha.Type: GrantFiled: April 18, 1988Date of Patent: April 11, 1989Assignee: Chisso CorporationInventors: Nobuo Goto, Hiroshisa Ishii, Hirokazu Nakajima
-
Patent number: 4812501Abstract: 1,3,2-oxazaphospholidine derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants.Type: GrantFiled: March 16, 1988Date of Patent: March 14, 1989Assignee: Ciba-Geigy CorporationInventors: Paul A. Odorisio, Stephen D. Pastor, James L. Hyun
-
Patent number: 4794139Abstract: This invention relates to a thixotropic thickening agent and to a process for preparing the same. Such thixotropic thickening agents are particularly useful for thickening water reducible coatings. The thixotropic thickening agents of this invention are copolymers which are comprised of repeat units which are derived from methacrylic acid monomer, ethylacrylate monomer, and a water soluble crosslinking agent. The water soluble crosslinking agents which can be used include ethylene glycol dimethacrylate and alkylene bisacrylamides, such as N,N'-methylene bisacrylamide. A neutralized two weight percent aqueous solution of the thixotropic thickening agents of this invention will have a Brookfield RVT viscosity as measured at 50 rpm using a number 3 spindle within the range of 50 to 2000 centipoise (cps).Type: GrantFiled: September 22, 1986Date of Patent: December 27, 1988Assignee: The Goodyear Tire & Rubber CompanyInventors: Jennifer T. Braden, Gary L. Burroway, Herbert L. Bullard, Donald A. Tedeschi
-
Patent number: 4755546Abstract: Thermal stabilization of olefin polymers, particularly polypropylene. Stabilization is accomplished by means of an ester of a pentaerythritol monoacetal. The ester contains a phenolic group.Type: GrantFiled: March 6, 1985Date of Patent: July 5, 1988Assignee: Borg-Warner Chemicals, Inc.Inventors: Ingenuin Hechenbleikner, William P. Enlow
-
Patent number: 4751319Abstract: 1,3,2-oxazaphospholidine derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants.Type: GrantFiled: February 2, 1987Date of Patent: June 14, 1988Assignee: Ciba-Geigy CorporationInventors: Paul A. Odorisio, Stephen D. Pastor, James L. Hyun
-
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
-
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
-
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
-
Patent number: 4605692Abstract: Hydroxyphenylthio-substituted phosphites of the formula ##STR1## prepared by the reaction of the appropriate phosphorus and phenol compounds, said phosphites being useful as stabilizers of organic polymers and lubricating oils to counteract the degradative effects of light, heat and air.Type: GrantFiled: December 17, 1984Date of Patent: August 12, 1986Assignee: Ciba-Geigy CorporationInventors: John D. Spivack, Ramanathan Ravichandran
-
Patent number: 4529533Abstract: Substituted 2-(2,6-di-t-butyl-4-alkylphenoxy)-4H-1,3,2-benzodioxaphosphorins that are readily prepared, for example from hindered phenols and ortho-methylolphenols, are effective heat and anti-oxidant stabilizers for organic materials subject to degradation by heat and oxygen, and provide particularly efficient stabilizer systems when combined with hydroxyphenylalkyleneyl isocyanurates.Type: GrantFiled: September 17, 1982Date of Patent: July 16, 1985Assignee: The B. F. Goodrich CompanyInventor: Dwight W. Chasar
-
Patent number: 4524166Abstract: Primary or secondary amino substituted hindered phosphites of the formula ##STR1## are prepared by reaction of the appropriate phosphorus and phenol compounds, said hindered phosphites being useful as stabilizers of organic polymers and lubricating oils.Type: GrantFiled: September 14, 1984Date of Patent: June 18, 1985Assignee: Ciba-Geigy CorporationInventors: John D. Spivack, Stephen D. Pastor
-
Patent number: 4508861Abstract: A thermally stabilized polyetherimide composition is disclosed which contains a polyetherimide and a stabilizing amount of an antioxidant having a molecular weight of 400 and is selected from the group of hindered phenols, aryl phosphonites, organic phosphites, thioesters or mixtures thereof. The stabilized polyetherimides exhibit a prolonged stability under conditions of elevated temperatures.Type: GrantFiled: December 29, 1983Date of Patent: April 2, 1985Assignee: General Electric CompanyInventor: Roger W. Avakian
-
Patent number: 4507416Abstract: Novel stabilizers for organic materials subject to degradation, 2,4,6-tris(substituted phenoxy)-1,3,5,2,4,6-trioxatriphosphorinanes are prepared by the reaction of substituted-phenylphosphorodichloridites, water and amines. The 2,4,6-tris(substituted phenoxy)-1,3,5,2,4,6-trioxatriphosphorinanes, form effective stabilizer combinations with hindered and partly hindered phenols such as hydroxyphenylalkyleneyl isocyanurates, particularly when used in polymers, polyolefins, for example.Type: GrantFiled: May 12, 1983Date of Patent: March 26, 1985Assignee: The B. F. Goodrich CompanyInventor: Dwight W. Chasar
-
Patent number: 4495320Abstract: 3,6-di-t-butyl-2-naphthyl catechol phosphite is readily prepared by the reaction of catechol phosphorodichloridite and 3,6-di-t-butylnathphol in the presence of a trialkyl amine in a solvent. The 3,6-di-t-butyl-2-naphthyl catechol phosphite is an excellent stabilizer for polymers, including polypropylene, and forms synergistic combinations with hydroxyphenylalkyleneyl isocyanurates that provide excellent resistance to polymer breakdown during processing.Type: GrantFiled: May 27, 1983Date of Patent: January 22, 1985Assignee: The B. F. Goodrich CompanyInventor: Dwight W. Chasar
-
Patent number: 4463113Abstract: Bis-phenol phosphates, are provided, represented by the formula: ##STR1## wherein: R is selected from the group consisting of a carbon-to-carbon bond; thio sulfur --S--; and alkylidene ##STR2## in which R.sub.3 and R.sub.4 are selected from the group consisting of hydrogen, alkyl having from one to about eighteen carbon atoms, and cycloalkyl, including cycloalkylidene in which R.sub.3 and R.sub.4 are taken together as part of a cycloalkylene ring, having from three to about twelve carbon atoms;R.sub.1 and R.sub.2 are each selected from the group consisting of hydrogen, alkyl having from one to about eighteen carbon atoms; and cycloalkyl having from three to about twelve carbon atoms;m is 0 or 1;M is a metal atom which can be monovalent or polyvalent; and n is the valence of the metal atom M, ranging from one to about four;useful to improve clarity of polyolefin resin compositions in an amount within the range from 0.005 to 5 parts by weight per 100 parts of resin.Type: GrantFiled: May 20, 1982Date of Patent: July 31, 1984Inventors: Yutaka Nakahara, Mitsuo Akutsu, Tohru Haruna, Masayuki Takahashi
-
Patent number: 4456717Abstract: The present invention is directed to stabilizer compositions or thermoplastic polycarbonates based on phosphites and siloxane-oxetane compounds. These stabilizers protect the polycarbonate against heat and oxidative degradation, and in addition, increase the hydrolysis resistance of the polycarbonate. The present invention is also directed to a process for stabilizing polycarbonate and to the stabilized polycarbonate produced therefrom.Type: GrantFiled: June 8, 1983Date of Patent: June 26, 1984Assignee: Bayer AktiengesellschaftInventors: Erich Eimers, Rolf Dhein, Klaus Kircher
-
Patent number: 4439564Abstract: 2-[Alkyl substituted-phenoxy]-2,3-dihydro-1,2-benzoxaphosphole 2-oxide, cyclic phosphonates prepared, for example from hindered phenols and ortho-methylolphenols, are effective heat stabilizers and antioxidants for organic materials subject to degradation by heat, oxygen and the like, and result in effective stabilizer systems when combined with hydroxyphenylalkylenyl isocyanurates.Type: GrantFiled: September 29, 1982Date of Patent: March 27, 1984Assignee: The B. F. Goodrich Co.Inventor: Dwight W. Chasar
-
Patent number: 4433087Abstract: Alkylated 2,2'-biphenylene phosphonates are prepared by reacting alkylated 2,2'-biphenol with phosphoros trichloride in an organic solvent and then with a base such as sodium hydroxide. Said phosphonates are useful as stabilizers of organic polymers and lubricating oils, especially as stabilizers for polyolefins, polyesters, and polycarbonates.Type: GrantFiled: May 26, 1981Date of Patent: February 21, 1984Assignee: Ciba-Geigy CorporationInventor: John D. Spivack
-
Patent number: 4423174Abstract: Synthetic resin compositions of improved resistance to deterioration by heat and light are provided containing a 2,2,6,6-tetramethyl piperidyl ether having the formula: ##STR1## The compounds of the invention can be prepared by the reaction of the 2,2,6,6-tetramethyl piperidyl alcohol R.sub.1 -OH with (poly) trimethylol alkane, (poly) pentaerthritol, or an alcohol containing an oxetane ring, to form the ether.The etherification is carried out by the conventional method, for example, by the reaction of R.sub.1 -OH with the organic sulfonate of the above-mentioned alcohols, or by the reaction of R.sub.1 -OH with the halogenated above-mentioned alcohols in the presence of an alkali or acid acceptor.The compounds where n is equal to 2 or more can be prepared by chain opening polymerization of the corresponding compound containing the oxetane ring.Type: GrantFiled: July 26, 1982Date of Patent: December 27, 1983Assignee: Adeka Argus Chemical Co., Ltd.Inventors: Motonobu Minagawa, Naohiro Kubota, Ryoji Kimura
-
Patent number: 4414345Abstract: Compounds of the formula I ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.18 alkyl,R.sub.2 is hydrogen or C.sub.1 -C.sub.18 alkyl, andA is a substituted primary or secondary aliphatic or alicyclic, aromatic or araliphatic amine, in which the substituents are identical or different, a heterocyclic amine or a hydrazine derivative.Type: GrantFiled: November 9, 1981Date of Patent: November 8, 1983Assignee: Ciba-Geigy CorporationInventor: Michael Rasberger