The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 1984
Filed:
May. 16, 1983
Kenneth W Doak, Murrysville, PA (US);
Other;
Abstract
A polyblend exhibiting high heat distortion temperatures, high impact strength, good processability, and which can be made in a substantially transparent form is produced from (a) 80-20 percent of a rubber-modified vinyl chloride resin, prepared by polymerization of vinyl chloride in the presence of 2-20 percent of a rubber; and (b) 20-80 percent of a rubber-modified copolymer or terpolymer of a vinyl aromatic monomer, such as styrene, an unsaturated dicarboxylic anhydride, such as maleic anhydride, an optional third monomer such as methyl methacrylate or acrylonitrile, prepared by polymerizing the monomers in the presence of 5-25 percent of one or more rubbers; and (c) optionally 0 to 10 percent of an ungrafted rubber, such as a block copolymer of 1,3-butadiene and styrene; and/or 0-35 percent of a graft copolymer of rubber, styrene, and methyl methacrylate or acrylonitrile.