Patents Represented by Attorney Dennis M. Kozak

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  • Flame-retardant molded composition which incorporates a poly(styrene-co-N-phenylmaleimide-co-dibromostyrene)copolymer
    Patent number: 4663386
    Abstract: A moldable composition which comprises a novel random bromostyrene-containing copolymer and a flame-retardant synergist is disclosed. The molded composition exhibits at least a 94V-1 classification when tested in accordance with Underwriters' Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: May 5, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Methylmethacrylate/phenylmaleimide copolymer and styrene/maleic anhydride copolymer containing polymer alloys
    Patent number: 4663390
    Abstract: Polymer alloys containing copolymers of methylmethacrylate/N-phenylmaleimide are disclosed. In one embodiment the polymer alloy is an alloy of methylmethacrylate/N-phenylmaleimide and styrene/maleic anhydride. In another embodiment, the polymer alloy is an alloy of methylmethacrylate/N-phenylmaleimide and styrene/maleic anhydride/N-phenylmaleimide.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: May 5, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Flame retardant molded composition which incorporates a poly[N-(bromophenyl)maleimide-co-styrene-co-N-phenylmalemide] copolymer
    Patent number: 4661574
    Abstract: A moldable composition which comprises a novel random N-(halogenated phenyl)maleimide-containing copolymer and a flame-retardant synergist is disclosed. The molded composition exhibits at least a 94V-1 classification when tested in accordance with Underwriters' Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: April 28, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Molding composition containing functionalized thermoplastic rubber and method
    Patent number: 4650828
    Abstract: A thermoplastic molding composition which comprises a blend of:(A) a copolymer having recurring units of a monoalkenyl aromatic monomer and recurring units of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic anhydride N-substituted imide, and(B) a hydrogenated elastomeric block copolymer having at least one substantially completely hydrogenated diene polymer mid block and at least two monoalkenyl arene polymer end blocks in which at least a portion of the arene groups contained in the end blocks are substituted with at least one substituent selected from the group consisting of nitro, cyano and trifluoromethanesulfonyl.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: March 17, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Impact modified polybutylene terephthalate resin molding compositions
    Patent number: 4647619
    Abstract: The impact resistance of molded polybutylene terephthalate resin molding compositions is improved by incorporating thereinto an elastomer grafted with a copolymer of an .alpha.-substituted acrylate with acrylic acid, methacrylic acid or a mixture thereof.
    Type: Grant
    Filed: November 14, 1985
    Date of Patent: March 3, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Partially crystalline poly(sulfone ester) resin
    Patent number: 4645820
    Abstract: Moldable polyester-sulfone thermoplastic resins are prepared by reacting (1) a dihydric phenol, (2) a bis(.alpha.,.alpha.-disubstituted acetic acid) sulfone or its reactive derivative, and (3) a 4,4'-benzophenone dicarboxylic acid or its reactive derivative. Molded articles prepared from the polyester-sulfone resins of the invention exhibit excellent resistance to heat, impact, UV and chemicals.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: February 24, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Process for sulfonating of polymers containing dicarboxylic acid cyclic imide units
    Patent number: 4644035
    Abstract: A process for producing sulfonated polymers containing styrene moieties and cyclic imide moieties comprises reacting a styrene/maleic anhydride copolymer with a primary amine to produce a polyimide and then subjecting the polyimide to sulfonation wherein both the imidization step and the sulfonation step are conducted in a solvent inert to both reaction steps, such as nitrobenzene.
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: February 17, 1987
    Assignee: Atlantic Richfield Company
    Inventors: David C. Dehm, H. Franklin Lawson
  • Flame-retardant molded composition which incorporates a poly(styrene-co-maleic anhydride-co-dibromostyrene) copolymer
    Patent number: 4634731
    Abstract: A moldable composition which comprises a novel random bromostyrene-containing copolymer, thermoplastic resin, preferably polycarbonate and a flame retardant synergist is disclosed. The molded composition exhibits at least a 94 V-1 classification when tested in accordance with Underwriters Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: January 6, 1987
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Polymerization initiator
    Patent number: 4627938
    Abstract: [2, 5, 8, 11]-tetraalkyl-[2, 5, 8, 11]-tetracyano-cis-6a' carboxy, 12a' oxoacide-3,4:9,10 bisdiazobicyclooctane compounds are disclosed. In one embodiment, the compounds are capable of initiating free radical polymerization and are well suited for the preparation of polymers having block type structures.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: December 9, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Elastomer having random peroxide functionality and method
    Patent number: 4626576
    Abstract: A process for generating random dialkyl or alkyl aryl peroxide functionality on elastomers is disclosed. Generally, the process involves dissolving an elastomer in a solvent followed by treating the resulting solution with an oxidizing agent in the presence of a catalyst. In a preferred embodiment, the oxidizing agent is a an alkyl or aryl hydroperoxide and the catalyst is a Group VIIa, VIII, Ib or IIb metal.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: December 2, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Flame-retardant molded composition incorporating a poly(N-(bromophenyl)maleimide-co-styrene-co-maleic anhydride) copolymer
    Patent number: 4626573
    Abstract: A moldable composition which comprises a novel random N-(brominated or chlorinated phenyl) maleimide-containing copolymer, a thermoplastic resin, preferably, polycarbonate and a flame retardant synergist is disclosed. The molded composition exhibits at least a 94 V-1 classification when tested in accordance with Underwriters Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: December 2, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Flame-retardant molded composition which incorporates a poly (styrene-CO-N-phenylmaleimide-CO-dibromostyrene copolymer
    Patent number: 4625004
    Abstract: A moldable composition which comprises a novel random bromostyrene-containing copolymer and a flame-retardant synergist is disclosed. The molded composition exhibits at least a 94V-1 classification when tested in accordance with Underwriters' Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: April 11, 1986
    Date of Patent: November 25, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Process for preparation of polymers containing dicarboxylic acid cyclic imide units in a solid/liquid slurry
    Patent number: 4618655
    Abstract: An improved process for producing polymers containing styrene moieties and cyclic imide moieties by reacting a styrene/maleic anhydride copolymer with a primary amine is improved by conducting the reaction in a heterogeneous slurry of polymer and amine reactants with an aromatic hydrocarbon dispersing agent having a boiling point above 120.degree. C. and simultaneously removing water formed as the reaction proceeds.
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: October 21, 1986
    Assignee: Atlantic Richfield Company
    Inventors: David C. Dehm, H. Franklin Lawson
  • Water absorbent polymer composition
    Patent number: 4616063
    Abstract: Water-insoluble, water swellable polymer compositions are disclosed. In one embodiment, the polymer composition comprises a copolymer of styrene and maleic anhydride and a multi arm block copolymer of styrene and ethylene oxide. In a preferred embodiment, the maleic anhydride groups of the anhydride-containing copolymer are treated with a strong base to further enhance absorption capacity.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: October 7, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Bi Le-Khac
  • Moldable polyester-sulfone thermoplastic resin
    Patent number: 4614767
    Abstract: Moldable polyester-sulfone thermoplastic resins are prepared by coreacting a dihydric phenol and a bis(.alpha.,.alpha.-disubstituted acetic acid) sulfone or its reactive derivative. In one embodiment the polyester-sulfone resin can be molded to form articles. In another embodiment, the polyester-sulfone resin is blended with an impact-modified styrenic copolymer, polyethylene terephthalate, or polybutylene-terephthalate and the resulting blend is molded to form an article.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: September 30, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Polymerization initiator
    Patent number: 4614776
    Abstract: [2,5,8,11]-tetraalkyl-[2,5,8,11]-tetracyano-cis-6a' carboxy, 12a' oxoacide-3,4:9,10 bisdiazobicyclooctane compounds are disclosed. In one embodiment, the compounds are capable of initiating free radical polymerization and are well suited for the preparation of polymers having block type structures.
    Type: Grant
    Filed: February 5, 1986
    Date of Patent: September 30, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Molding composition containing functionalized thermoplastic rubber and method
    Patent number: 4614765
    Abstract: A thermoplastic molding composition which comprises a blend of:(A) a copolymer having recurring units of a monoalkenyl aromatic monomer and recurring units of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic anhydride N-substituted imide, and(B) a hydrogenated elastomeric block copolymer having at least one substantially completely hydrogenated diene polymer mid block and at least two monoalkenyl arene polymer end blocks in which at least a portion of the arene groups contained in the end blocks are substituted with at least one substituent selected from the group consisting of nitrol, cyano and trifluromethanesulfonyl.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: September 30, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Flame retardant molded composition which incorporates a poly(N-(bromophenyl)maleimide-Co-styrene-Co-N-phenylmaleimide) copolymer
    Patent number: 4609711
    Abstract: A moldable composition which comprises a novel random N-(halogenated phenyl)maleimide-containing copolymer and a flame-retardant synergist is disclosed. The molded composition exhibits at least a 94V-1 classification when tested in accordance with Underwriter's Laboratories Inc. Test Method UL94.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: September 2, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Composition comprising a matrix resin and an alternating copolymer of brominated styrene and N-brominated phenyl maleimide flame retarding additive
    Patent number: 4607081
    Abstract: A flame retarding additive comprising an alternating copolymer of a brominated styrene and N-brominated phenylmaleimide, is blended with a matrix resin to produce molding compositions which when molded exhibit improved flame retarding characteristics. The flame retarding additives of this invention also exhibit non-blooming characteristics.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: August 19, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Thermodynamically miscible polymer composition
    Patent number: 4605700
    Abstract: A thermodynamically miscible polymer composition containing of a copolymer having recurring units of a C.sub.2 to C.sub.4 .alpha.-olefin and recurring units of an N-aryl substituted maleimide and an acrylonitrile copolymer is disclosed.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: August 12, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Bi Le-Khac