Phosphorus Bonded To Three Chalcogen Atoms And Having Only One P-c Linkage Patents (Class 524/130)
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Patent number: 5234979Abstract: The present invention relates to thermoplastic moulding compositions consisting of halogen-free polycarbonates, halogen-free polystyrene and/or halogen-free copolymers of styrene with acrylonitrile, halogen-free phosphorus compounds of the formula I ##STR1## and tetrafluoroethylene polymers, and, if appropriate, other known additives.Type: GrantFiled: January 25, 1988Date of Patent: August 10, 1993Inventors: Gert Todtemann, Klaus Reinking
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Patent number: 5179135Abstract: A glass ionomer cement composition comprises poly(vinyl phosphonic acid) dissolved in its own mass of water; and (in treble the total mass of the solution) a powder, being glass or MgO or a cement. The powder has to be deactivated so that the setting reaction with the acid is not too fast, and this is achieved either by a raised Si:Al ratio or by heat-treating. The glass contains heavy ions such as La, Ba or Sr.Type: GrantFiled: October 26, 1990Date of Patent: January 12, 1993Assignee: National Research Development CorporationInventors: John Ellis, Alan D. Wilson
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Patent number: 5137951Abstract: Hydroxyaminomethylphosphonates of formula I ##STR1## where R.sub.1 to R.sub.5 are independently hydrogen, alkyl, cycloalkyl, aryl or phenylalkyl, R.sub.6 has the same meanings except for hydrogen, and R.sub.1 can also be trialkylsilyl, are useful stabilizers for organic materials subject to oxidative, thermal or actinic induced degradation.Type: GrantFiled: September 11, 1991Date of Patent: August 11, 1992Assignee: Ciba-Geigy CorporationInventors: Stephen D. Pastor, Ramanathan Ravichandran, Roger Meuwly
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Patent number: 5116919Abstract: A process for increasing the relative viscosity of a polyamide includes heating the polyamide in the presence of a base and a catalyst with the catalyst being at least one compound of the formula:X--(CH.sub.2).sub.n PO.sub.3 R.sub.2wherein X is 2-pyridyl, 4-morpholino, 1-pyrrolidino, 1-piperidino or R'.sub.2 --N-- wherein R' is an alkyl group having between 1 and 12 carbon atoms;n is an integer from 2 to 5; andR, being the same or different, is H or an alkyl group having between 1 and 12 carbon atoms.Type: GrantFiled: December 5, 1990Date of Patent: May 26, 1992Assignee: E. I. du Pont de Nemours and CompanyInventors: John F. Buzinkai, Marion R. DeWitt, Jr., Robert C. Wheland
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Patent number: 5102932Abstract: A reaction of alumina trihydrate, dimethyl methylphosphonate and a phosphonic acid of formula ##STR1## where R.sup.1 denotes an alkyl group of 1 to 4 carbon atoms, optionally substituted by at least one group selected from a hydroxyl group, a carboxyl group or a phosphonic acid group --P(O)(OH).sub.2, or a C.sub.6 to C.sub.12 aryl group and R.sup.2 denotes a hydrogen atom or an alkyl group of 1 to 4 carbon atoms, is useful as a flame retardant for polymers.Type: GrantFiled: March 26, 1991Date of Patent: April 7, 1992Assignee: Ciba-Geigy CorporationInventor: James Gainer
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Patent number: 5079299Abstract: This invention provides a mold release composition copmrising (1) a compound or a polymer having at least one of perfluoroalkyl groups having 4 to 20 carbon atoms and perfluoroalkenyl groups having 4 to 20 carbon atoms, and (2) a ladder polymer of organosilsesquioxane.Type: GrantFiled: July 16, 1989Date of Patent: January 7, 1992Assignee: Daikin Industries, Ltd.Inventors: Iwao Hisamoto, Masayoshi Shinjyo, Seiji Takubo, Yasuko Katakura
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Patent number: 5061743Abstract: Certain hydroxy alkanoate polymers, such as 3-hydroxybutyrate polymers, when obtained by solvent extraction from fermentation masses, can have long cycle times during thermal processing due to a low rate of crystallization. A combination of (a) an organophosphonic or organophosphoric acid or ester with (b) an oxide, hydroxide, or carboxylate of a metal of Groups I to V is an effective nucleating agent.Type: GrantFiled: May 30, 1990Date of Patent: October 29, 1991Assignee: Imperial Chemical Industries plcInventors: John M. Herring, Andrew Webb
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Patent number: 5030675Abstract: Flame-resistant molding compounds of polycarbonate, polyalkylene terephthalate, graft polymer, fluorinated polyolefine and phosphorus compound can be worked up into moulded products which have a particularly advantageous combination of joint line strength, dimensional stability under heat and toughness.Type: GrantFiled: December 13, 1989Date of Patent: July 9, 1991Assignee: Bayer AktiengesellschaftInventors: Dieter Wittmann, Hans-Jurgen Kress, Horst Peters, Josef Buekers, Christian Lindner
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Patent number: 4972011Abstract: Compositions comprising a halogen-free polymer and, as flame retardant, at least one aluminum salt of a phosphonic acid of the formula: ##STR1## in which R is a straight or branched chain alkyl group having 1 to 3 carbon atoms optionally substituted by one or more of halogen atoms or hydroxyl groups and R' is hydrogen or an alkyl group having 1 to 3 carbon atoms.Type: GrantFiled: September 8, 1989Date of Patent: November 20, 1990Assignee: Ciba-Geigy CorporationInventors: Joyce Richardson, Richard J. Dellar
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Patent number: 4929652Abstract: The invention relates to polyolefines stabilized against damage caused by light and containing(A) at least one polyalkylpiperidine light stabilizer,(B) an organic salt of zinc or magnesium and(C) either(C.sub.1) a UV absorber or(C.sub.2) a pigment or(C.sub.3) a UV absorber and a pigment.Type: GrantFiled: April 27, 1988Date of Patent: May 29, 1990Assignee: Ciba-Geigy CorporationInventor: Francois Gugumus
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Patent number: 4925890Abstract: A process for enhancing the fabrication of thermoplastic polymers entailing the addition of from 0.01 to 1 part, per hundred parts of thermoplastic polymer, of a processing aid, said processing aid comprising a processing additive, such as a silicon or a polyol, and a processing adjuvant, such as a phosphate.Type: GrantFiled: May 24, 1989Date of Patent: May 15, 1990Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventors: Pak S. Leung, Errol D. Goddard, Fred H. Ancker
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Patent number: 4889879Abstract: Coherent thermoplastic aggregates with very high content of pulverized mineral materials, composed of the said materials, of polyolefin polymers and/or copolymers, and possibly also of various familiar adjuvants, characterized by the fact that, in order for them to have both a volumetric mass close to or at most equal to the theoretical volumetric mass of the pulverized mineral substances entering into their composition and an excellent compatibility with redispersion polymers, the polymers and/or copolymers entering into the composition of the said aggregates in presence of a fluidizing agent are chosen within the group of thermoplastics with melting and/or softening point at least equal to 60.degree. C. and index of fluidity at least 50 (measured according to the standard ASTM D 1238) of the polyolefin type, other than those containing a polar monomer.Type: GrantFiled: July 24, 1987Date of Patent: December 26, 1989Assignee: Pluess Staufer AGInventors: Henry Seinera, Patricia Luberne, Claude Stock, Patrick Trouve
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Patent number: 4888370Abstract: Flame-resistant, thermoplastic polyamide moulding materials which contain 0.01-4% by weight of polyphenylene oxides as flameproofing agent and which are prepared by mixing the components in the melt.Type: GrantFiled: September 7, 1988Date of Patent: December 19, 1989Assignee: Bayer AktiengesellschaftInventors: Dieter Freitag, Thomas Joswig, Karsten Idel, Heinz-Josef Fullmann, Friedemann Muller
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Patent number: 4857593Abstract: A process for enhancing the fabrication of thermoplastic polymers entailing the addition of from 0.01 to 1 part, per hundred parts of thermoplastic polymer, of a processing aid, said processing aid comprising a processing additive, such as a silicone or a polyol, and a processing adjuvant, such as a phosphate.Type: GrantFiled: March 8, 1988Date of Patent: August 15, 1989Assignee: Union Carbide CorporationInventors: Pak S. Leung, Errol D. Goddard, Fred H. Ancker
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Patent number: 4788238Abstract: The present invention provides thermoplastic flame-retardant moulding compositions containing halogen-containing copolycarbonates, styrene/maleic anhydride copolymers, phosphorus compounds of the formula (I) ##STR1## and tetrafluoroethylene polymers and, if desired, further known additives.Type: GrantFiled: September 21, 1987Date of Patent: November 29, 1988Assignee: Bayer AktiengesellschaftInventors: Gert Todtemann, Klaus Reinking, Otto Koch, Kress Hans-Jurgen, Lindner Christian, Friedemann Muller, Horst Peters, Josef Buekers
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Patent number: 4777189Abstract: Flame-retardant polyurethane foam having a very good skin weldability and a very low level of skin staining is produced from a polyhydroxy compound, organic polyisocyanate, blowing agent, catalyst, foam stabilizer, and flame retardant, and other additives, wherein the flame retardant contains a triaryl phosphate ester and the polyhydroxy compound is a mixture composed of 100 parts by weight of high-molecular-weight polyhydroxy compound having a hydroxyl number lower than 100 and 0.5 to 10 parts by weight of low-molecular-weight polyhydroxy compound having a hydroxyl number higher than 560 and having 2 to 4 hydroxyl groups in one molecule.Type: GrantFiled: June 30, 1987Date of Patent: October 11, 1988Assignees: Ikeda Bussan Co., Ltd., Bridgestone CorporationInventors: Kenji Shimomura, Shigeaki Kouketsu, Toru Okuyama, Take Sato
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Patent number: 4756881Abstract: A composition and method for inhibiting corrosion in industrial cooling waters which contain hardness and have a pH of at least 8, which composition comprises a water-soluble organic phosphonate capable of inhibiting corrosion in an aqueous alkaliine environment and a hydrocarbon polymer containing an N-substituted acrylamide polymer with an amide structure as follows: ##STR1## where R.sub.2 is hydrogen or methyl, R.sub.1 is a hydrogen or an alkyl and R is alkylene or phenylene, and X is sulfonate, (poly)hydroxyl, and combinations thereof.Type: GrantFiled: May 9, 1986Date of Patent: July 12, 1988Assignee: Nalco Chemical CompanyInventors: John E. Hoots, Donald A. Johnson, Dodd W. Fong
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Patent number: 4751260Abstract: The present invention relates to flame-retarding, thermoplastic polycarbonate moulding materials of high impact strength consisting of halogen-containing polycarbonates, copolymers formed from styrenes and (meth)acrylonitrile, phosphorus compounds of the formula (I) ##STR1## tetrafluoroethylene polymers and small amounts of graft polymers and, if appropriate, effective amounts of stabilizers, pigments, lubricants, mould release agents and/or antistatic agents, and to a process for the preparation thereof.Type: GrantFiled: April 30, 1986Date of Patent: June 14, 1988Assignee: Bayer AktiengesellschaftInventors: Hans-Jurgen Kress, Friedemann Muller, Christian Lindner, Horst Peters, Josef Buekers
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Patent number: 4701518Abstract: Antimicrobial activity is imparted to nylon during its preparation by adding to the nylon-forming monomer(s), a zinc compound (e.g. zinc ammonium carbonate) and a phosphorus compound (e.g. benzene phosphinic acid). The compounds are added in amounts sufficient to form in situ a reaction product containing at least 300 ppm of zinc, based on the weight of nylon prepared. Fibers made from the resulting nylon contain the reaction product uniformly dispersed therein and have antimicrobial activity of a permanent nature.Type: GrantFiled: May 8, 1986Date of Patent: October 20, 1987Assignee: Monsanto CompanyInventors: Scott E. Osborn, Vincent J. Farrugia, LeMoyne W. Plischke, Chester C. Wu
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Patent number: 4696952Abstract: Flame-retardant polyurethane foam having a very good skin weldability and a very low level of skin staining is produced from a polyhydroxy compound, organic polyisocyanate, blowing agent, catalyst, foam stabilizer, and flame retardant, and other additives, wherein the flame retardant contains a triaryl phosphate ester and the polyhydroxy compound is a mixture composed of 100 parts by weight of high-molecular-weight polyhydroxy compound having a hydroxyl number lower than 100 and 0.5 to 10 parts by weight of low-molecular-weight polyhydroxy compound having a hydroxyl number higher than 560 and having 2 to 4 hydroxyl groups in one molecule.Type: GrantFiled: July 19, 1985Date of Patent: September 29, 1987Assignees: Ikeda Bussan Co., Ltd., Bridgestone Corp.Inventors: Kenji Shimomura, Shigeaki Kouketsu, Toru Okuyama, Take Sato
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Patent number: 4690954Abstract: A method for improving a production characteristic of flame-retardant polyurethanes. The characteristic may be selected from the group consisting of(1) processability;(2) scorch;(3) odor; and(4) flame-retardant efficiency.The method comprises incorporation into a polyurethane an amount effective to reduce combustibility of a haloether phosphorate flame-retardant under conditions sufficient to improve said characteristic. Also, the flame-retardant polyurethane composition such as prepared by said method. Preferably, the polyurethane is a foam, especially a flexible foam and most especially flexible slabstock foam.Type: GrantFiled: April 28, 1986Date of Patent: September 1, 1987Assignee: The Dow Chemical CompanyInventors: David J. Wampfler, Donna J. Fielding, Chester E. Pawloski
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Patent number: 4681902Abstract: This invention relates to flame retardant phenol aldehyde foams which have a k value below 0.020 W/mk. The foams have as flame retardants a blend of a halosubstituted diphenyl oxide and an organic phosphorus compound. The feature of the invention is that unlike conventional flame retardants, the blend now used does not adversely affect the low k value i.e. the low thermal conductivity of the foam.Type: GrantFiled: November 3, 1986Date of Patent: July 21, 1987Assignee: BP Chemicals LimitedInventors: Alexander W. S. Duncan, David G. Summers, Kenneth C. Thomas
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Patent number: 4666967Abstract: The invention provides polyurethanes and polyisocyanurate having incorporated therein a flame retardant amount of a salt formed by reaction between dimethyl methyl phosphonate, monomethyl methyl phosphonate or methyl phosphonic acid, and a compound of the general formula (I). ##STR1## in which X is O, S or NH, R.sup.1 is H, alkyl with 1 to 4 carbon atoms, alkenyl of up to 4 carbon atoms, CN, CONH.sub.2 or NH.sub.2, R.sup.2 is H, alkyl with 1 to 4 carbon atoms or alkenyl of up to 4 carbon atoms or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocyclic ring of up to 6 carbon atoms which may optionally contain another hetero atom and R is H, an alkyl group with 1 to 8 carbon atoms, an aryl group with 6 to 10 carbon atoms, a cycloalkyl group with 5 to 12 carbon atoms or a heterocyclic group with up to 9 ring carbon atoms, or, together with R.sup.1 forms an alkylene chain of 3 to 10 carbon atoms, or R is a group NHR.sup.3 wherein R.sup.Type: GrantFiled: January 22, 1986Date of Patent: May 19, 1987Assignee: Ciba-Geigy CorporationInventors: Norman Richardson, deceased, Brian G. Clubley, Richard J. Dellar
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Patent number: 4657955Abstract: The present invention relates to new phthalimides of the formula (I) ##STR1## wherein n is an integer of from 1 to 12, preferably 1 to 4 and especially 1 to 2 andR is H or F,and their preparation, these phthalimides being suitable, in combination with alkali metal salts, as flameproofing agent combinations for thermoplastic, branched, aromatic polycarbonates.Type: GrantFiled: June 11, 1986Date of Patent: April 14, 1987Assignee: Bayer AktiengesellschaftInventors: Hans-Jurgen Kress, Klaus Kircher
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Patent number: 4656200Abstract: The invention provides salts of methyl phosphonic acid and its mono- or di-methyl ester with certain amines. The salts are useful flame retardant additives for polyurethanes and polyisocyanurates.Type: GrantFiled: January 14, 1985Date of Patent: April 7, 1987Assignee: Ciba-Geigy AGInventors: Brian G. Clubley, Richard J. Dellar, David L. Buszard, Norman Richardson
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Patent number: 4649168Abstract: The present invention relates to a process for the preparation of flame-resistant polycarbonate moulding compositions, which is characterized in that, besides the addition of alkali metal salts, there is incorporation of tetrafluoroethylene polymers as an intimate mixture with halogen-free graft polymers, these intimate mixtures being prepared by coagulation of the appropriate emulsion mixtures, and to the polycarbonate moulding compositions obtainable by the process according to the invention.Type: GrantFiled: November 13, 1985Date of Patent: March 10, 1987Assignee: Bayer AktiengesellschaftInventors: Hans-Jurgen Kress, Ludwig Bottenbruch, Mark Witman, Klaus Kircher, Christian Lindner, Karl-Heinz Ott
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Patent number: 4611018Abstract: There is disclosed a method of processing a fluoroelastomer composition. In a preferred embodiment, the method comprises formulating a fluoroelastomer composition consisting essentially of about 50-99 weight percent of AFLAS.RTM., about 0-50 weight percent of a polymer filler, about 1-25 weight percent of dimethyl methyl phosphonate, and about 0-15 weight percent of trioctyl phosphate. The method further comprises loading the composition into either a blow molding or extruding apparatus, and then blow molding or extruding, respectively, the composition into a predetermined shape.Type: GrantFiled: December 17, 1984Date of Patent: September 9, 1986Assignee: Raychem CorporationInventor: Tibor T. Derencsenyi
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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: 4576971Abstract: Flame retarded polyacrylimide or polymethacrylimide resin foams containing at least 70 percent by weight of cyclic acrylimide or methacrylimide units and incorporating at least 1 percent by weight of phosphorus, present at least partially in the form of a phosphorus compound, XCH.sub.2 --PO(OR).sub.2, wherein R is methyl, ethyl, or chloromethyl, and X is hydrogen, halogen, hydroxyl, or RO--CO--.Type: GrantFiled: December 18, 1984Date of Patent: March 18, 1986Assignee: Rohm GmbHInventors: Ehrenfried Baumgartner, Siegmund Besecke, Wolfgang Gaenzler
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Patent number: 4568716Abstract: There is disclosed according to the invention a composition and an article made from the composition. In a preferred embodiment, the composition consists essentially of about 50-99 weight percent of a fluoroelastomer copolymer of tetrafluoroethylene and propylene having the following structure: ##STR1## where x=y, about 0-50 weight percent of a polymer filler, about 1-25 weight percent of dimethyl methyl phosphonate and about 0-15 weight percent of trioctyl phosphate.Type: GrantFiled: December 17, 1984Date of Patent: February 4, 1986Assignee: Raychem CorporationInventor: Tibor T. Derencsenyi
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Patent number: 4565833Abstract: A fire retardant composition for rigid polyurethanes or polyisocyanurates comprises dimethyl methyl phosphonate, diethyl ethyl phosphonate or a mixture thereof and a triaryl phosphate, a trialkyl phosphate or an alkyl/aryl phosphate in a ratio by weight of 5:95 to 95:5. The composition may also contain a halogen-containing flame retardant compound.Type: GrantFiled: October 12, 1983Date of Patent: January 21, 1986Assignee: Ciba-Geigy AGInventors: David L. Buszard, Richard J. Dellar
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Patent number: 4555540Abstract: Blends of an aromatic polycarbonate a polyester, a halogenated flame retardant agent and a metal oxide synergist for the flame retardant are made more stable against transesterification reactions during high temperature processing by the inclusion of minor amounts of selected phosphorus-containing compounds, such as phosphorous acid or acid salt.Type: GrantFiled: December 28, 1984Date of Patent: November 26, 1985Assignee: General Electric CompanyInventor: Roger W. Avakian
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Patent number: 4547540Abstract: A composition and method for inhibiting ferrous metal corrosion in aqueous systems consisting essentially of (A) a copolymer of styrene sulfonic acid and maleic anhydride or maleic acid, and (B), water-soluble salts of said copolymer; and (C) a blend of two phosphonates consisting of (1) 2-phosphonobutane-1,2,4-tricarboxylic acid and (2) one member of the group consisting of (a) aminotrimethylene phosphonic acid and (b) hydroxy ethylidene diphosphonic acid. A preferred dosage, based on the active ingredient, is 7.5 ppm of styrene sulfonic acid/maleic anhydride copolymer and 6.0 ppm of phosphonate (1) and either 3.5 ppm of phosphonate (2a) of 4.2 ppm of phosphonate (2b). This relationship can be maintained during a total dosage of 0.01 to 500 ppm.Type: GrantFiled: July 18, 1983Date of Patent: October 15, 1985Assignee: Nalco Chemical CompanyInventor: Alan M. Yeoman
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Patent number: 4533689Abstract: A flame resistant acrylic resin composition comprising a polymer composed of from 40 to 88% by weight of methyl methacrylate, from 1 to 15% by weight of .alpha.-methyl styrene, from 5 to 15% by weight of styrene, from 5 to 15% by weight of maleic anhydride and from 1 to 15% by weight of methacrylic acid, and a flame retardant.Type: GrantFiled: August 17, 1983Date of Patent: August 6, 1985Assignee: Mitsubishi Rayon Company, LimitedInventors: Suehiro Tayama, Norihisa Kusakawa
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Patent number: 4526916Abstract: A composition particularly adapted for use in a rotational moulding process is disclosed. The composition comprises polyethylene having a density of 0.920-0.970 g/cm.sup.3 and a melt index of 10-35 dg/min., 0.3-1.3% by weight of a bis(tert. alkyl peroxyalkyl) benzene, 0.2-1.5% by weight of a co-curing agent selected from triallyl cyanurate, triallyl isocyanurate and 1,2-polybutadiene, 0.01-0.05% by weight of a hindered phenolic antioxidant and 0.01-0.2% by weight of a secondary antioxidant. The preferred secondary antioxidant is tris di(tert.-butyl phenyl) phosphite. The composition may be used in for example, the moulding of tanks, barrels, containers and the like.Type: GrantFiled: January 31, 1983Date of Patent: July 2, 1985Assignee: Du Pont Canada Inc.Inventor: George White
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Patent number: 4499222Abstract: Phosphorus-containing flame proofing mixtures with low crystallization temperatures and with the ability significantly to improve the flame resistance of materials without adversely affecting the other properties of the materials, the mixtures being principally comprised of phosphonates having the structure: ##STR1## wherein X is chloro or bromo; Z.sub.1, Z.sub.2 and Z.sub.3 are the same or different and are --CH.sub.2 --CH.sub.2 -- or ##STR2## and R is CH.sub.3 or CH.sub.2 Cl, and the molar ratio of the --CH.sub.2 --CH.sub.2 --X groups to the total of --CH.sub.2 --CH.sub.2 --X and the --CH.sub.2 --CHR--X groups is from 2 to 90%, these flame proofing mixtures being usable with both synthetic and natural materials, together with the flame-resistive natural and synthetic materials so made.Type: GrantFiled: August 15, 1983Date of Patent: February 12, 1985Assignee: Produits Chimiques Ugine KuhlmannInventors: Michel Bernard, Daniel Balde, Elie Ghenassia, Francois Laumain
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Patent number: 4496687Abstract: The invention provides a novel organopolysiloxane-containing aqueous emulsion composition which, upon removal of water by drying at room temperature, can give a cured rubbery elastomer having excellent mechanical properties and exhibiting strong adhesion to the substrate on which it has been cured. The inventive composition is prepared by blending (A) an aqueous emulsion of an organopolysiloxane having silicon-bonded hydroxy groups and emulsified in water by use of an anionic surface active agent, (B) a mixture of a reaction product of a carboxylic acid anhydride with an amino-functional organosilane and a colloidal silica in the form of an aqueous suspension and (C) a curing catalyst in limited proportions.Type: GrantFiled: January 27, 1984Date of Patent: January 29, 1985Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Fumio Okada, Toshio Oba, Morizo Nakazato
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Patent number: 4474916Abstract: Aqueous solutions comprising 25 to 60 percent by weight of mixtures of(a) polymers of acrylic acid and/or copolymers of acrylic acid with maleic acid and(b) aminopolycarboxylic acids, aminopolyphosphonic acids and/or hydroxyalkanepolyphosphonic acids,such solutions having a pH value of about 3 to about 7 with the acid groups being present 20 to 80 percent in the form of the potassium salts and the remaining acid groups being present in form of the free acid, the amine salt, or mixtures thereof.Type: GrantFiled: July 21, 1983Date of Patent: October 2, 1984Assignee: BASF AktiengesellschaftInventors: Werner Streit, Wolfram Bergold, Dieter Bassing
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Patent number: 4459381Abstract: The present invention provides a non-foamed flame-retardant article of polymeric composition comprising at least 20% by weight of a monomer mixture comprising 0-0.1% by weight o-methylstyrene 0-15% by weight m-methylstyrene and at least 85% by weight p-methylstyrene; 0-80% by weight of a different ethylenic unsaturated monomer; and a sufficient amount of flame-retardants wherein the amount of flame-retardants is substantially less than would be needed had the p-methylstyrene been replaced with styrene analogs. The flame retardancy is achieved by the addition of organophosphorus or halogenated organophosphorus flame retardants. High impact resistance is achieved by the incorporation of a rubbery polymer into the polymeric composition.Type: GrantFiled: November 15, 1982Date of Patent: July 10, 1984Assignee: Mobil Oil CompanyInventor: Viren P. Trivedi
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Patent number: 4444930Abstract: The invention relates to a fire-resistant synthetic resin composition containing a polycarbonate, more specifically a bisphenol A derivative, a phosphorous fireproofing additive derived from phosphonic acid, and possibly other additives and/or fillers.The fireproofing additive is a Li, Na or K hemiester of a phosphonic acid derived from an aromatic or cycloaliphatic hydrocarbon, or from a polynuclear aromatic compound, and is added at the rate of 0.01 to 0.4 weight % in relation to polycarbonate. This small amount of additive improves the fire-resistant properties of the polycarbonate, without affecting its mechanical properties.Type: GrantFiled: August 24, 1982Date of Patent: April 24, 1984Assignee: Ato ChimieInventors: Bernard Guerin, Pierre Poisson, Georges Sturtz
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Patent number: 4407981Abstract: A composition comprises polyurethane, a two-component flame retardant system consisting of an additive first flame retardant containing organophosphorus, and a second flame retardant containing organochlorine or organobromine.The composition of the invention may be employed for polyurethane foams, especially rigid foams.Diminished combustibility for rigid foam is measured by a flame-spread index less than 75 and a smoke developed index less than 450 when subjected to ASTM Test E-84, Surface Burning Characteristics of Building Materials.Dimethyl methylphosphonate is a representative additive organophosphorus first flame retardant. Trichloroisopropyl alcohol is a representative second flame retardant containing organochlorine.Type: GrantFiled: February 16, 1982Date of Patent: October 4, 1983Assignee: Stauffer Chemical CompanyInventor: Alan M. Aaronson
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Patent number: 4404313Abstract: The invention provides a process for rendering textiles or barrier fabric material flame retardant and smolder resistant with a flame retardant and smolder resistant composition comprised of an aminophosponate ester in combination with a thermosetting, nitrogen-containing resin and preferably a reactive elastomeric latex.Type: GrantFiled: August 31, 1981Date of Patent: September 13, 1983Assignee: Stauffer Chemical CompanyInventor: George J. Leitner
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Patent number: 4383066Abstract: A polyphenylene ether resin composition having improved heat stability, said composition comprising a polyphenylene ether resin matrix, and dispersed therein, a phosphonic acid or its derivative of the formula ##STR1## wherein R.sub.1 represents an unsubstituted or substituted phenyl or naphthyl group, or a linear or branched alkyl group with 1 to 18 carbon atoms, or a group of the following formula (a) ##STR2## R.sub.2 and R.sub.3 are identical or different and each represents hydrogen atom, a metal, an unsubstituted or substituted phenyl group, or an alkyl group with 1 to 10 carbon atoms; and R.sub.4 is a divalent hydrocarbon group with 2 to 10 carbon atoms.Type: GrantFiled: April 7, 1981Date of Patent: May 10, 1983Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masanobu Masu, Masao Okabe, Kozo Ishiyama
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Patent number: 4373043Abstract: A color deepening agent comprises (a) an aqueous resin composition obtained by polymerizing a monomer having a polymerizable unsaturated bond, in the presence of a polyurethane emulsion having a thermosetting reactivity, the refractive index of a dry film of said aqueous resin composition being lower than 1.50, and (b) at least one compound selected from the group consisting of silicon compounds and fluorine compounds.Type: GrantFiled: July 22, 1981Date of Patent: February 8, 1983Assignee: Kao Soap Co., Ltd.Inventors: Kazuhisa Yagi, Sho Suzuki, Norihiko Nakashima
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Patent number: 4366276Abstract: Aromatic polyesters and polyestercarbonates based on diphenols and iso- and/or terephthalic acids become flame-proof if admixed with small quantities of ammonium or alkali metal salts of inorganic or organic acids and optionally halophthalimides and optionally polytetrafluoroethylene. The mechanical and chemical properties of the polyester (carbonates) remain unchanged.Type: GrantFiled: June 7, 1981Date of Patent: December 28, 1982Assignee: Bayer AktiengesellschaftInventors: Dieter Freitag, Werner Nouvertne, Klaus Reinking, Peter Tacke, Frank Kleiner, Manfred Schmidt
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Patent number: 4361611Abstract: A process for providing textile fabrics, especially polyamide carpeting, with an antistatic finish. The process comprises treating the fabrics with an aqueous film-forming preparation which contains an acid ester of phosphoric acid or phosphorous acid, said ester being derived from an aliphatic diol having an average molecular weight of 400 to 2600, wherein the diol is unetherified or etherified by C.sub.1 -C.sub.4 -alkoxy.Type: GrantFiled: December 10, 1980Date of Patent: November 30, 1982Assignee: Ciba-Geigy CorporationInventors: Paul Schafer, Fritz Mayer, Jurg Kundig