Ethylenic Reactant Contains At Least Two Unsaturated Groups And Is Devoid Of An Aromatic Group Patents (Class 525/313)
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Patent number: 4485212Abstract: Blend of polybutylene terephthalate resin and a graft copolymer of styrene and acrylonitrile on olefin copolymer rubber (e.g., EPDM) has high impact strength, provided the blend contains at least 25% of the graft.Type: GrantFiled: May 27, 1983Date of Patent: November 27, 1984Assignee: Uniroyal, Inc.Inventor: John M. Wefer
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Patent number: 4481335Abstract: A rubber molding composition comprising cured rubber scrap (as from automobile tires), a liquid, sulfur-curable polymeric binder, and a curing agent for the polymeric binder. The composition employs from about one to about five parts by weight of the polymeric binder per 100 parts by weight of the scrap rubber. The thus treated rubber scrap may be used in large proportions as a filler or extender for uncured rubbers.Type: GrantFiled: August 10, 1981Date of Patent: November 6, 1984Inventor: Fred J. Stark, Jr.
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Patent number: 4471094Abstract: A primer composition for use in the bonding of asphalts comprising the reaction product of an elastomer and a terpene resin. The primer composition of this invention can be used in the treatment of substrates to which asphalts are bonded to improve the bonding relationship between the substrate and the asphalt, such as in road-paving applications, roofing applications and the like.Type: GrantFiled: August 29, 1980Date of Patent: September 11, 1984Assignee: Owens-Corning Fiberglas CorporationInventors: William E. Uffner, Robert N. White
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Patent number: 4454306Abstract: A crosslinked product is derived from an olefinic block copolymer comprising 5 to 70 parts by weight of at least one block (A), which is selected from homopolymer blocks of propylene and random copolymer blocks of propylene and ethylene or a C.sub.4-12 .alpha.-olefin and has a propylene content of 60 to 100% by weight, and 30 to 95 parts by weight of at least one block (B), which is a random copolymer of ethylene and at least one C.sub.3-12 .alpha.-olefin and has an ethylene content of 10 to 85% by weight. This crosslinked product is characterized in that:(1) the content therein of hot xylene insoluble components is from 5 to 75% by weight; and(2) the fluidity thereof, i.e., the quantity thereof flowing per second (cc/sec..times.10.sup.-3) out through the orifice of Koka flow tester, is 3 to 500 cc/sec..times.10.sup.Type: GrantFiled: August 20, 1982Date of Patent: June 12, 1984Assignee: Mitsubishi Petrochemical Company, Ltd.Inventors: Masaki Fujii, Mitsutaka Miyabayashi
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Patent number: 4445562Abstract: A conventional sealant composition having as its essential rubber components (1) at least one high molecular weight, hydrogenated polybutadiene polymer, and (2) at least one low molecular weight liquid elastomer, i.e., polybutene, as tackifying polymer, compatible to a high degree with said hydrogenated polymer; the resultant sealant composition reflecting a co-continuous phase morphology wherein said hydrogenated polymer provides a crosslinked network in said compatible low molecular weight liquid elastomer.Type: GrantFiled: May 7, 1981Date of Patent: May 1, 1984Assignee: The Firestone Tire & Rubber CompanyInventors: Georg G. A. Bohm, Mario DeTrano, James E. Hall
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Patent number: 4442233Abstract: Disclosed herein is a process for producing cross-linked polypropylene by subjecting a homogenous mixture of a polypropylene with from about 2 to about 20 weight percent, based upon the weight of the polypropylene, of polybutadiene with a molecular weight of from about 500 to about 10,000 to conditions sufficient to effect cross-linking, for example, through the use of cross-linking agents and/or irradiation. In addition, the process disclosed herein may be utilized to produce cross-linked and foamed polypropylenes.Type: GrantFiled: June 17, 1982Date of Patent: April 10, 1984Assignee: Firma Carl FreudenbergInventors: Ernst Lohmar, Wolffried Wenneis
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Patent number: 4426483Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.Type: GrantFiled: May 11, 1982Date of Patent: January 17, 1984Assignee: Hercules IncorporatedInventors: William W. Maslanka, Gavin G. Spence
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Patent number: 4423193Abstract: Vinylchloride resins such as polyvinylchloride, copolymers of vinylchloride and vinyl acetate and copolymers of vinylchloride and vinylidene chloride are dehydrochlorinated in water at 150.degree. to 180.degree. C. to provide a dehydrochlorinated vinylchloride resin which can be graft copolymerized with one or more copolymerizable monomers containing polymerizable ethylenically unsaturated double bonds. Grafted copolymers in which the grafting monomer is butyl acrylate and the like provide an internally plasticized vinylchloride resin.Type: GrantFiled: September 1, 1982Date of Patent: December 27, 1983Assignee: The General Tire & Rubber CompanyInventors: Earl G. Melby, Harry W. Cocain, Hubert J. Fabris
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Patent number: 4419463Abstract: The invention relates to soft contact lenses having a water content of at least about 45% and comprising a hydrated copolymer of a major proportion of an hydroxyalkyl acrylate or methacrylate, up to 12% by weight of an ethylenically unsaturated acid or anhydride, a minor proportion of a cross-linking monomer and a minor proportion of styrene or a substituted styrene, the free acid or anhydride groups being in salt form.Type: GrantFiled: March 16, 1982Date of Patent: December 6, 1983Inventors: Ivor B. Atkinson, Barry C. Holdstock
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Patent number: 4419488Abstract: High impact polystyrene having excellent properties is produced by a continuous process comprising feeding rubber and styrene continuously to a multistage horizontal dissolving tank to dissolve the rubber completely with stirring by increasing the temperature of each stage stepwise along the liquid flow direction, feeding the rubber solution to a first polymerizer to effect phase inversion of the rubber and preliminary polymerization of styrene; feeding the pre-polymerized solution to one or more horizontal type polymerizers to undergo bulk polymerization while removing the heat generated therein; and feeding the polymerized solution to a monomer separator to remove the remaining monomer.Type: GrantFiled: April 7, 1982Date of Patent: December 6, 1983Assignee: Hitachi, Ltd.Inventors: Chihiro Fukumoto, Tokinobu Furukawa, Chikao Oda
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Patent number: 4403063Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.Type: GrantFiled: June 30, 1982Date of Patent: September 6, 1983Assignee: Hercules IncorporatedInventors: William W. Maslanka, Gavin G. Spence
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Patent number: 4400484Abstract: It has been found that the addition of small amounts of a benzoate or acetate ester of a polyfunctional hydroxy containing compound to an olefinic nitrile copolymer composition greatly increases the flowability and processibility of these thermoplastic copolymers.Type: GrantFiled: May 15, 1980Date of Patent: August 23, 1983Assignee: The Standard Oil CompanyInventors: Brandford E. Giddings, Richard J. Jorkasky, II, Kim L. Thornton
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Patent number: 4369292Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.Type: GrantFiled: June 12, 1980Date of Patent: January 18, 1983Assignee: Hercules IncorporatedInventors: William W. Maslanka, Gavin G. Spence
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Patent number: 4361657Abstract: The invention relates to soft contact lenses having a water content of at least about 45% and comprising a hydrated copolymer of a major proportion of an hydroxyalkyl acrylate or methacrylate, up to 12% by weight of an ethylenically unsaturated acid or anhydride, a minor proportion of a cross-linking monomer and a minor proportion of styrene or a substituted styrene, the free acid or anhydride groups being in salt form.Type: GrantFiled: November 29, 1979Date of Patent: November 30, 1982Assignee: Global Vision (U.K.) Ltd.Inventors: Ivor B. Atkinson, Barry C. Holdstock
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Patent number: 4354005Abstract: Formation of undesired by-product adduct during production of acrylonitrile-butadiene-styrene-acrylate copolymers is controlled by subjecting the inhibitor containing reaction mixture to a molecular-oxygen-containing gaseous atmosphere during addition of the acrylate monomer.Type: GrantFiled: October 9, 1981Date of Patent: October 12, 1982Assignee: Cosden Technology, Inc.Inventor: Richard Schwarz
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Patent number: 4351923Abstract: The invention relates to a process for preparing terpolymer polyblends having high gloss and ductility in formed articles, wherein, rubber particles in an aqueous latex are reacted with an alkenyl aromatic, alkenyl nitrile and alkyl acrylate monomer formulation such that said rubber particles become grafted with at least a portion of said monomers while said monomers form a matrix terpolymer phase of said monomers followed by separating said matrix phase terpolymer and said grafted rubber particles from said latex as a terpolymer polyblend. The invention also relates to a composition of said process.Type: GrantFiled: December 4, 1980Date of Patent: September 28, 1982Assignee: Monsanto CompanyInventor: Edward F. Tokas
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Patent number: 4343729Abstract: Disclosed are novel organic pigments adapted particularly for use as tillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.Type: GrantFiled: January 21, 1981Date of Patent: August 10, 1982Assignee: Hercules IncorporatedInventors: William W. Maslanka, Gavin G. Spence
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Patent number: 4331784Abstract: Polymer particles composed of particles of a polymer (I) consisting of 96 to 100% by weight of at least one ethylenically unsaturated monomer and 4 to 0% by weight of at least one .alpha.,.beta.-ethylenically unsaturated carboxylic acid, and a (co-)polymer (II) comprising 100 to 10% by weight of a conjugated diolefin which is localized on the surface layer of the particles of the polymer (I) at a (I)/(II) weight ratio of 100/5-100/90. The localized polymer part of the polymer particles is very active, and the polymer particles are easy to modify with a monomer having any functional group, and hence are elemental materials having a high function and being utilizable for various purposes.Type: GrantFiled: October 8, 1980Date of Patent: May 25, 1982Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Yoshiyuki Ishibashi, Eijiro Tagami, Teruo Hiraharu, Shiro Yasukawa
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Patent number: 4325856Abstract: Aqueous copolymer latexes comprising colloidally dispersed, substantially spheroidal copolymer particles having a predominantly hydrophobic core portion and having a relatively hydrophilic polymeric portion which is preferentially oriented toward the outer surface thereof (e.g., a relatively hydrophilic shell portion) are prepared by (a) first emulsion polymerizing an initial monomer charge to form a first aqueous latex of a substantially linear, relatively hydrophilic polymer and (b) thereafter emulsion polymerizing a major proportion (e.g., from about 50 to about 95 parts by weight) of a second (and relatively more hydrophobic) monomer charge in the presence of a minor proportion (e.g., from about 5 to about 50 parts by weight on a polymer solids basis) of said first, relatively hydrophilic polymer latex.Type: GrantFiled: January 2, 1980Date of Patent: April 20, 1982Assignee: The Dow Chemical CompanyInventors: Tadayoshi Ishikawa, Do I. Lee
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Patent number: 4303763Abstract: Unsaturated ethylene polymers and processes for preparing and using the same. These polymers are characterized by the process, comprising the step of reacting a saturated, linear polyethylene directly with a diene monomer in the melt phase, the diene monomer having from 1 to about 10 carbon atoms and being present in an amount up to about 5 weight percent of the melt composition. The reaction occurs under mild conditions, including atmospheric pressure and temperatures in the range of between about 250.degree. F. and about 400.degree. F. Moreover, no chemical or irradiant initiation is required. Processes for using these unsaturated polymers in cross-linking and addition reactions are also disclosed, involving reacting such polymers with a saturated, linear polyethylene or with some other polymeric or nonpolymeric functional group susceptable of free-radical addition reaction, the functional component being present in an amount of between about 20 weight percent and about 40 weight percent of the melt phase.Type: GrantFiled: January 17, 1980Date of Patent: December 1, 1981Assignee: RESDEV, Inc.Inventor: Marvin L. Beasley
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Patent number: 4298710Abstract: An antistatic resin composition comprises 100 parts of a nitrile copolymer comprising 7 to 100% of a nitrile graft copolymer with a graft ratio of 4 to 50% obtained by graft-polymerizing a monomer mixture of a specific composition onto a rubber trunk polymer predominantly comprising a conjugated diolefin and/or an acrylate, and 0 to 93% of a nitrile random copolymer of a specific composition; and 0.05 to 10 parts of a surfactant added thereto. This antistatic resin composition, wherein the rubber trunk polymer forms a bridge structure, not only has, per se, an excellent antistatic property but also an antistatic property which undergoes substantially no change upon washing, for example, with water.Type: GrantFiled: August 30, 1979Date of Patent: November 3, 1981Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Masaki Ohya, Akio Kobayashi, Takeo Ogiwara, Yoshikatsu Satake
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Patent number: 4297451Abstract: Polymers are prepared using dienyllithium initiators, a reaction product of organolithium with a 1,4-diolefin, to polymerize olefinically unsaturated monomers such as conjugated dienes under solution polymerization conditions to provide unsaturated polymers, branched polymers, graft polymers, polymers prepared by sequential polymerization, and coupled polymers.Type: GrantFiled: July 10, 1979Date of Patent: October 27, 1981Assignee: Phillips Petroleum CompanyInventors: Carl A. Uraneck, John E. Burleigh, Paul W. Solomon
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Patent number: 4293667Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.Type: GrantFiled: June 23, 1980Date of Patent: October 6, 1981Assignee: Hercules IncorporatedInventors: William W. Maslanka, Gavin G. Spence
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Patent number: 4293666Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.Type: GrantFiled: June 23, 1980Date of Patent: October 6, 1981Assignee: Hercules IncorporatedInventors: William W. Maslanka, Gavin G. Spence
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Patent number: 4287318Abstract: A continuous process for preparing rubber reinforced resins which are copolymers of styrenic compound, acrylonitrile and diolefinic compound.Type: GrantFiled: March 27, 1980Date of Patent: September 1, 1981Assignee: Labofina S.A.Inventors: William J. I. Bracke, Emmanuel Lanza
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Patent number: 4283506Abstract: A continuous process for polymerizing a monomer mixture of acrylate and diolefinic compound in the presence of a copolymeric matrix of styrene and acrylonitrile.Type: GrantFiled: March 27, 1980Date of Patent: August 11, 1981Assignee: Labofina, S.A.Inventors: William J. I. Bracke, Emmanuel Lanza
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Patent number: 4269871Abstract: Expandable styrene polymer particles are surface-coated with conjugated diene elastomers to prevent the particles from lumping together during expansion. The coating is applied by adding 0.05-0.25 part of conjugated diene elastomer to an aqueous suspension containing 100 parts of polymer particles during the impregnation of the mixture with a blowing agent.Type: GrantFiled: June 30, 1980Date of Patent: May 26, 1981Assignee: Arco Polymers, Inc.Inventors: Elizabeth A. Blommers, William J. Poole, Alvin R. Ingram
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Patent number: 4267282Abstract: In the process of melting a blend of nitrile polymer and lubricous additive with a screw-plasticizing unit, the improvement which involves having an absorptive anti-slip agent such as rubber crumb in admixture with the blend when charging the plasticator to minimize feeding problems.Type: GrantFiled: September 18, 1978Date of Patent: May 12, 1981Assignee: Monsanto CompanyInventor: Edward F. Tokas
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Patent number: 4258150Abstract: Monovinyl aromatic polymers are modified by reacting with elemental alkali metal and a conjugated diene to produce polymers having branches containing olefinic unsaturation. The olefinically unsaturated branches provide reactive sites which are readily reacted with various substances to obtain numerous variations in the properties of the monovinyl aromatic polymers.Type: GrantFiled: July 20, 1979Date of Patent: March 24, 1981Assignee: Phillips Petroleum CompanyInventor: Raymond L. Cobb
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Patent number: 4247668Abstract: An improved process for preparing rubber reinforced styrenic resins which are composite systems containing a copolymer of styrene and unsaturated nitrile together with copolymers of acrylates and conjugated diolefins.Type: GrantFiled: March 27, 1980Date of Patent: January 27, 1981Assignee: Labofina S.A.Inventors: William J. I. Bracke, Emmanuel Lanza
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Patent number: 4244861Abstract: An injection-moldable, peroxide crosslinkable elastomeric composition comprises a mixture of a crystalline interpolymer comprising ethylene and propylene; a low density polyethylene; one or more multifunctional vinylic or allylic monomers; a medium to high structure form of carbon; and an organic peroxide.The composition is particularly useful for the fabrication of injection molded structures which are required to flex on impact and return to their original shape when the distorting force is released. Typical structures are automotive fender extensions, grilles and front and rear fascia.Type: GrantFiled: February 23, 1979Date of Patent: January 13, 1981Assignee: Exxon Research & Engineering Co.Inventors: Lawrence Spenadel, Ilan Duvdevani, Edward N. Kresge
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Patent number: 4245057Abstract: Impact resistant compositions comprise a blend of a styrene polymer having a number average molecular weight from about 200,000 to 600,000, and a rubber-modified styrene polymer prepared by mass polymerization of a solution of a rubber in styrene monomer.Type: GrantFiled: March 16, 1979Date of Patent: January 13, 1981Assignee: Standard Oil Company (Indiana)Inventor: Francis J. Slama
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Patent number: 4221878Abstract: A process of reducing free acrylonitrile monomer in nitrile polymers during conversion to melt form which involves having an effective amount of an acrylonitrile scavenger such as myrcene in admixture with the polymer during melting. Shaped products such as preforms, containers, film, sheet, etc., formed from such melt are well suited for packaging food, beverages, pharmaceuticals, cosmetics, etc., in that residual acrylonitrile monomer in the walls of such products is minimal.Type: GrantFiled: September 18, 1978Date of Patent: September 9, 1980Assignee: Monsanto CompanyInventor: Edward F. Tokas
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Patent number: 4218548Abstract: A novel class of compounds having the formula ##STR1## where Z is a substituted carbonate or carbamate, D is alkynyl or an alkyl, and the R's may be alkyl.Type: GrantFiled: June 20, 1979Date of Patent: August 19, 1980Assignee: Pennwalt CorporationInventors: Orville L. Mageli, William A. Swarts
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Patent number: 4205020Abstract: A graft copolymer comprises a substrate of a diene rubber, and a homogeneous superstrate containing units of acrylonitrile and at least one aromatic olefin having a molar ratio of acrylonitrile to olefin between 2 and 9. The superstrate may also contain a minor amount (preferably less than 10 mole %) of at least one other comonomer selected from acenaphthylene, vinyl carbazole and its derivatives, maleimide and its N-substituted derivatives and norbornene and its derivatives.Type: GrantFiled: February 13, 1979Date of Patent: May 27, 1980Assignee: Imperial Chemical Industries LimitedInventors: Brian N. Hendy, Carl F. Mathews, Eric Nield, John B. Rose, Peter I. Vincent
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Patent number: 4174335Abstract: An aqueous dispersion of an olefinic resin composition having improved properties which comprises mixing an olefinic resin composition comprising (a) 50 to 99% by weight of a carboxyl-free olefinic resin having an intrinsic viscosity of 0.1 to 5 and (b) 1 to 50% by weight of a carboxyl-containing modified olefinic resin having an intrinsic viscosity of 0.04 to 1 and an acid number of 30 to 150, the amount of each resin being based on the total amount of resins (a) and (b), which has been melted by heating to a temperature above the melting point, whichever is higher, of the resins, with an aqueous medium heated to a temperature of 140 to 300.degree. C. in the presence of at least 0.2 chemical equivalent, to the carboxyl groups of resin (b), of a base.Type: GrantFiled: July 20, 1976Date of Patent: November 13, 1979Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Akio Ohdaira, Toru Tomoshige, Kinich Onodera