Patents Represented by Attorney Dennis M. Kozak

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  • Flame-retardant molded composition incorporating a poly[N-(bromophenyl)maleimide-co-styrene-co-maleic anhydride] copolymer
    Patent number: 4604422
    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: December 24, 1984
    Date of Patent: August 5, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Elastomer having random peroxide functionality and method
    Patent number: 4593074
    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: March 14, 1984
    Date of Patent: June 3, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Impact resistant polyamide molding compositions
    Patent number: 4593066
    Abstract: The impact resistance of molded polyamide resin molding compositions is improved by incorporating thereinto an elastomer grafted with a polymer comprised of recurring units of, in weight percent, (A) from about 60 to about 95 vinyl aromatic monomer, (B) from about 5 to about 40 of at least one acid selected from the group consisting of acrylic acid, methacrylic acid, partially neutralized acrylic acid, partially neutralized methacrylic acid, totally neutralized acrylic acid and totally neutralized methacrylic acid and (C) 0 to about 15 acrylate monomer.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: June 3, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Thermodynamically miscible polymer compositions
    Patent number: 4588774
    Abstract: A thermodynamically miscible polymer composition comprised of a terpolymer having recurring units of methylmethacrylate, N-aryl substituted maleimide, and vinyl aromatic monomer and an acrylonitrile copolymer is disclosed.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: May 13, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Char-forming polymer, moldable composition and method
    Patent number: 4571418
    Abstract: The char residue formation of molded compositions, upon combustion, is improved by incorporating into the moldable composition a char-forming polymer containing recurring units of at least one monomer capable of undergoing tautomerization, at least one monomer capable of undergoing a nucleophilic substitution reaction by said monomer capable of undergoing tautomerization and, optionally, at least one additional copolymerizable monomer.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: February 18, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Polymer compositions containing styrene/cyanostyrene copolymers
    Patent number: 4568722
    Abstract: Polymer compositions comprising from about 1 to about 99 mole % of a copolymer of a styrenic monomer selected from the group consisting of styrene, p-methylstyrene, t-butylstyrene and .alpha.-methylstyrene with a maleimide monomer selected from the group consisting of maleimide, N-phenylmaleimide, N-methylmaleimide and N-ethylmaleimide and from about 99 to about 1 mole % of a copolymer of styrene monomer with at least one isomeric cyanostyrene monomer selected from the group consisting of ortho-cyanostyrene, meta-cyanostyrene and para-cyanostyrene, are disclosed.
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: February 4, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Molding composition which contains a .gamma.-sultone derivative of an EPDM rubber
    Patent number: 4568724
    Abstract: A moldable composition comprising a .gamma.-sultone derivative of an ethylene/propylene/substituted methylene norbornene terpolymer and a polymer which comprises recurring units of a vinyl aromatic monomer, a monomer having an active hydrogen with an acidity constant (pKa) within the range of from about 7.5 to about 10.5 and a vinyl pyridine monomer selected from the group consisting of 2-vinyl pyridine and 4-vinyl pyridine is disclosed. Optionally, the polymer comprises recurring units of an ethylenically unsaturated monomer.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: February 4, 1986
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Polyether sulfone resin containing molding composition and method
    Patent number: 4562231
    Abstract: Moldable polymer compositions comprising a polyether sulfone resin and a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer are disclosed.
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: December 31, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Polymerization initiator
    Patent number: 4556512
    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: November 5, 1984
    Date of Patent: December 3, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Polyarylate resin containing composition and method
    Patent number: 4542187
    Abstract: Moldable polymer compositions comprising a polyarylate resin and a copolymer containing recurring units of a vinyl aromatic monomer and recurring units of a maleimide monomer are disclosed.
    Type: Grant
    Filed: May 14, 1984
    Date of Patent: September 17, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Radial block polymers
    Patent number: 4532301
    Abstract: Radial block polymers having at least four arms. In one embodiment, the radial block polymers are prepared using a bisdiazobicyclooctane polymerization initiator. In another embodiment, five arm radial block polymers of this invention are well suited for use as impact modifiers for thermoformable plastic resins.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: July 30, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Polymeric molding composition containing styrenic copolymer, polycarbonate and MBS polymer
    Patent number: 4530965
    Abstract: A polymeric molding composition containing a polycarbonate resin, a styrenic copolymer and a methylmethacrylate-butadiene-styrene polymer is disclosed. The molding compositions of this invention exhibit excellent impact strength and can be molded over a wide range of processing conditions.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: July 23, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Larry G. Bourland
  • Polyamide-impact modified styrenic polyblends
    Patent number: 4528326
    Abstract: Polyblends of impact modified styrene/.alpha.,.beta.-unsaturated dicarboxylic anhydride or imide copolymers and polyamides are disclosed. The resulting molded articles exhibit excellent mechanical strength, resistance to chemicals, toughness and resistance to heat.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: July 9, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Polymeric molding composition
    Patent number: 4522983
    Abstract: Polymeric composition having good impact resistance which comprises styrene, methylstyrene, a conjugated diene monomer, and optionally an unsaturated dicarboxylic acid anhydride, are described.
    Type: Grant
    Filed: March 9, 1983
    Date of Patent: June 11, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Bi Le-Khac, Clyde Sharik
  • Production of aryl alkyl ethers from methylbenzyl alcohol using bis-(dithiobenzyl)nickel(II) catalyst
    Patent number: 4518806
    Abstract: The synthesis of aryl alkyl ethers from methylbenzyl alcohol and, optionally, phenol using a bis-(dithiobenzyl)nickel(II) catalyst is disclosed.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: May 21, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Haven S. Kesling, Jr.
  • Production of aryl alkyl ethers from methylbenzyl alcohol using rhenium heptoxide catalyst
    Patent number: 4514576
    Abstract: The synthesis of aryl alkyl ethers from methylbenzyl alcohol and, optionally, phenol using a rhenium heptoxide catalyst is disclosed.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: April 30, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Haven S. Kesling, Jr.
  • Methylmethacrylate/phenylmaleimide copolymer and styrene/maleic anhydride copolymer
    Patent number: 4514543
    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: October 3, 1983
    Date of Patent: April 30, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Alternating copolymer of brominated styrene and N-brominated phenyl maleimide
    Patent number: 4508883
    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: April 28, 1983
    Date of Patent: April 2, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Usama E. Younes
  • Methylmethacrylate/N-phenylmaleimide copolymer-containing polymer alloys
    Patent number: 4504627
    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/acrylonitrile. In another embodiment, the polymer alloy is an alloy of methylmethacrylate/N-phenylmaleimide and stryene/acrylonitrile/N-phenylmaleimide.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: March 12, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Chlorinated polyvinyl chloride molding compound
    Patent number: 4501849
    Abstract: The incorporation of a high melt flow rate propylene-based polymer additive into a CPVC molding compound serves to retard the fusion rate of the CPVC compound during processing.
    Type: Grant
    Filed: May 24, 1984
    Date of Patent: February 26, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Larry G. Bourland