With Other Nonreactive Material Patents (Class 524/350)
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Patent number: 4822842Abstract: A process is disclosed for delaying the rate at which water soluble polymers are gelled by an aldehyde and a phenolic compound and for increasing the mechanical strength of these gels which comprises contacting an aqueous solution of said water soluble polymer, aldehyde, phenolic compound, and water with from 0.004 to about 0.049 wt % of a transition metal ion. In addition, novel gelable compositions are disclosed.Type: GrantFiled: February 3, 1987Date of Patent: April 18, 1989Assignee: Phillips Petroleum CompanyInventors: Naim A. Mumallah, Ahmad Moradi-Araghi
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Patent number: 4822839Abstract: A polyunsaturated hydrocarbon polymer-compatible anti-oxidant composition is provided which comprises a mixture of at least one sterically hindered phenolic compound and at least one aryl amine compound in a molar ratio ranging from about 0.1 to about 10.Type: GrantFiled: November 25, 1987Date of Patent: April 18, 1989Assignee: Hercules IncorporatedInventor: Martin J. Paisner
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Patent number: 4758614Abstract: Substituted amino carbamate derivatives corresponding to 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 and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds; and certain of said derivatives as new compounds.Type: GrantFiled: April 25, 1986Date of Patent: July 19, 1988Assignee: Ciba-Geigy CorporationInventors: Stephen D. Pastor, Edward T. Hessell, Ramanathan Ravichandran
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Patent number: 4735980Abstract: This invention is concerned with compounds of the structural formula: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different radical selected from the group consisting of hydrogen and methyl radicals; when R.sup.1 is a hydrogen radical, R is an alkyl radical of 5 to 11 carbon atoms; when R.sup.1 is a methyl radical, R is a radical of 4 to 10 carbon atoms; when R.sup.2 is a hydrogen radical, R.sup.3 is an alkyl radical of 5 to 11 carbon atoms; when R.sup.2 is a methyl radical, R.sup.3 is an alkyl radical of 4 to 10 carbon atoms. These compounds have utility as synergists for phenolic type and amine type antioxidants in the stabilization of natural and synthetic rubbers.Type: GrantFiled: March 9, 1987Date of Patent: April 5, 1988Assignee: The Goodyear Tire & Rubber CompanyInventors: Budd H. Sturm, Joseph A. Kuczkowski, Joel Muse
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Patent number: 4701489Abstract: The catalyst residues present in an on-purpose produced amorphous polyalphaolefin are deactivated by contacting the molten polymer with sufficient water to provide at least a 3:1 water/Al mole ratio and then the polymer is stabilized with a hindered phenolic antioxidant.Type: GrantFiled: September 8, 1986Date of Patent: October 20, 1987Assignee: El Paso Products CompanyInventors: Michael P. Hughes, Brian J. Pellon
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Patent number: 4699942Abstract: Compositions suitable for molding are produced by examining a (1) polyethylene terephthalate polyester, (2) a low molecular weight polyethylene mold release agent (3) talc as nucleating agent, (4) carbon black, (5) a hindered phenolic antioxidant and (6) other optional ingredients such as reinforcing glass fibers.Type: GrantFiled: August 30, 1985Date of Patent: October 13, 1987Assignee: Eastman Kodak Co.Inventors: James C. Weaver, Wayne P. Pruett
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Patent number: 4532287Abstract: Compositions for flameproofing polymeric material comprising:(a) a halogenated alkylaryl ether, the aryl group of which may be substituted by halogen;(b) an organo-tin compound; and(c) a sterically hindered phenol or a bisphenol containing a sterically hindered --OH group on each phenyl.In this specification by the term "bisphenol" is meant a compound containing two phenol groups linked by a bridging group that is not attached to any other bisphenol groups and by the term "phenol" is meant compounds containing only a single phenol group.Type: GrantFiled: May 11, 1984Date of Patent: July 30, 1985Assignee: Sandoz Ltd.Inventors: Rudolf Bill, Rainer Wolf
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Patent number: 4513111Abstract: In a process comprising adding an ethylenic monomer or monomer mixture (B) to a rubbery polymer (A) latex, emulsion-polymerizing it to produce a graft copolymer (C) latex, then adding an acidic substance or an electrolyte to said graft copolymer (C) latex to partially coagulate the latex, thereafter either first adding an ethylenic monomer or monomer mixture (D) and then adding a suspension polymerization stabilizer or simultaneously adding an ethylenic monomer or monomer mixture (D) and a suspension polymerization stabilizer, and carrying out suspension polymerization to obtain a graft copolymer (E) in the form of beads, a process for producing an impact-resistant resin wherein:(1) said rubbery polymer (A) contains at least 60% by weight of a diene monomer component and has a degree of swelling of 10-35, a gel content of 70% by weight or more and a weight average particle diameter of 0.2-0.5.mu. and the major part of the particles has a particle diameter ranging from 0.03.mu. to 1.0.mu.Type: GrantFiled: March 8, 1983Date of Patent: April 23, 1985Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kazuo Kishida, Naoki Yamamoto, Kozi Nishida, Toshihito Narita, Yasumasa Sato
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Patent number: 4463112Abstract: Organic polyphosphites are disclosed having in the molecule at least two phosphite ester groups, at least one of which is linked through oxygen to a phenylethylidene-substituted phenyl group and to a residue of a polyhydroxy compound which is a pentaerythritol residue or a residue of a phenol or alcohol having two to three hydroxyl groups separated from one another by at least three carbon atoms.Polymer stabilizer compositions comprising an organic polyphosphite as disclosed and a known polymer stabilizer, as well as synthetic resin stabilized with such stabilizer compositions, are also disclosed.Type: GrantFiled: February 13, 1980Date of Patent: July 31, 1984Inventors: William E. Leistner, Motonobu Minagawa, Yutaka Nakahara, Kazumi Kitsukawa
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Patent number: 4451604Abstract: Glycerides of higher fatty acids have been found to be effective as a discoloration inhibitor in very low concentrations for polyolefins.Type: GrantFiled: October 8, 1982Date of Patent: May 29, 1984Assignee: Phillips Petroleum CompanyInventor: Kenneth R. Mills
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Patent number: 4443572Abstract: A stabilizer system for C.sub.2 to C.sub.8 olefin polymers is provided which comprises at least one pentaerythritol phosphite compound and at least one alkaline earth metal oxide. In addition, stabilized polyolefins are disclosed which contain the above-described stabilizing system.Type: GrantFiled: September 22, 1982Date of Patent: April 17, 1984Assignee: Phillips Petroleum CompanyInventor: Lyle D. Burns
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Patent number: 4439570Abstract: Substantially colorless, liquid compositions are described which are constituted by a phenolic antioxidant, or mixture of phenolic antioxidants, and at least one phosphine, the compositions being highly resistant to coloration phenomena.These compositions are effective stabilizers for organic polymers and, when incorporated in the said polymers, have a stabilizing power which is greater than that shown by the phenolic antioxidant or mixture of phenolic antioxidants alone.Type: GrantFiled: September 27, 1982Date of Patent: March 27, 1984Assignee: Euteco Impianti S.p.A.Inventors: Giuseppe Messina, Loreno Lorenzoni, Antonio L. Fadda
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Patent number: 4418169Abstract: Polyvinyl chloride polymers are made more heat degradation resistant by the incorporation of a diorganotin salt of an unsaturated aliphatic dicarboxylic acid ester and a hindered phenolic antioxidant.Type: GrantFiled: September 4, 1962Date of Patent: November 29, 1983Assignee: M & T Chemicals Inc.Inventors: Ambrose J. Gibbons, Jr., Robert C. Ringwood, Jr.
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Patent number: 4412025Abstract: A non-volatile, anti-gel compound having a chain of at least about 5 repeat units of an alkylene oxide and which is soluble in olefin polymers, and an inorganic anti-block agent having a substantially neutral pH are added to a film grade transition metal catalyzed resin containing halide residues such as Ziegler-Natta catalyzed olefin polymer compositions to prevent: (1) gel streaking/pinstriping during film extrusion processes; (2) blocking of the extruded film; and (3) discoloration of the extruded film upon aging. The anti-gel compound has a molecular weight between about 200 and about 4,000,000 Daltons.Type: GrantFiled: October 8, 1981Date of Patent: October 25, 1983Assignee: Union Carbide CorporationInventors: Michael A. Corwin, George N. Foster
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Patent number: 4371647Abstract: 2,6-Di-tertiary butyl phenyl pentaerythritol spiro bisphosphites are provided having the structure: ##STR1## wherein: R is alkyl having from one to six carbon atoms;R.sub.1 is methyl or ethyl;R.sub.2 is selected from the group consisting of alkyl having from one up to about eighteen carbon atoms; cycloalkyl having from three up to about twelve carbon atoms; and alkaryl and aryl having from six to about thirty carbon atoms; such groups substituted with from one to about four oxy ether--O-- and/or carboxylic ester--COO--groups; the residue of a polyhydric alcohol having from two to about eighteen carbon atoms, and from two to about ten hydroxyl groups; and the residue of a polyphenol having from six to about eighteen carbon atoms and from two to about ten phenolic hydroxyl groups.Type: GrantFiled: January 7, 1981Date of Patent: February 1, 1983Assignee: Adeka Argus Chemical Co. Ltd.Inventors: Motonobu Minagawa, Yutaka Nakahara, Etsuo Tobita
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Patent number: 4371644Abstract: Piperidine derivatives in which two or three piperidine residues each substituted at the 2- and the 6-position by two methyl groups or by one methyl group and one ethyl group, the piperidine residues being attached by means of substituted alkylene groups, by means of polyoxyalkylene groups (whose oxyalkylene chain is optionally interrupted by one or more phenylene or cyclohexylene groups), by means of substituted isocyanurate groups or by means of glyceryl groups, and acid addition salts thereof are valuable as stabilizers for synthetic polymers.Type: GrantFiled: July 10, 1980Date of Patent: February 1, 1983Assignee: Sankyo Company Ltd.Inventors: Nobuo Soma, Syoji Moromura, Takao Yoshioka, Tomoyuki Kurumada
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Patent number: 4369278Abstract: A resin composition suitable for injection moulding and having excellent heat resistance, impact resistance and crack resistance, which is composed of polyphenylene ether and rubber-reinforced styrene resin and an amount of volatile matters in the resin having molecular weight of about 300 or less is 5000 ppm or less. This resin composition is prepared by melting and kneading the two resins above in an extruder with a vent under keeping the vent part under reduced pressure.Type: GrantFiled: September 2, 1981Date of Patent: January 18, 1983Assignee: Asahi-Dow LimitedInventors: Hideo Kasahara, Kunio Fukuda, Yukihisa Mizutani
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Patent number: 4369273Abstract: A stabilizing composition consisting of substituted alpha- or beta-naphthindoles, benzoylated or not benzoylated, and combined with organic polyimines such as those of formula 1 of the formulae sheet, in which R is alkyl or dialkyl, ethoxylated alkylmercaptans with 2.varies.8 ethoxy groups and (metal) halides of barium, calcium, lithium, zinc or aluminum, have a strong thermostabilizing effect on chlorine containing thermoplastics, especially on polyvinyl chloride, both homo-M and S polymers thereof, and on polyvinylidene chloride.Type: GrantFiled: August 22, 1980Date of Patent: January 18, 1983Assignee: Nautamix B.V.Inventor: Martinus A. Snel
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Patent number: 4338228Abstract: A polyolefin composition comprising a modified polyolefin obtained by adding an unsaturated carboxylic acid or an anhydride thereof to a polyolefin or mixtures of said modified polyolefin and an unmodified polyolefin, an inorganic filler, one or more nucleating agents or a combination thereof with one or more heat deterioration inhibitors, said polyolefin composition evidencing reduced deterioration by heat or reduction of its mechanical strength during a molding operation.Type: GrantFiled: October 7, 1980Date of Patent: July 6, 1982Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Hiroshi Inoue, Masaaki Isoi, Makoto Yoda, Masato Komatsu