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:
Dec. 18, 1979
Filed:
Apr. 20, 1978
Russell P Carter, Jr, New Martinsville, WV (US);
Mobay Chemical Corporation, Pittsburgh, PA (US);
Abstract
The instant invention is directed to novel thermoplastic polyurethane materials containing a processing aid. More particularly, the instant invention is directed to a thermoplastic polyurethane composition comprising: (A) from 40 to 100 percent by weight of a thermoplastic polyurethane, (B) from 0 to 60 percent by weight of a thermoplastic polymer selected from the group consisting of thermoplastic polycarbonates, thermoplastic polyoxymethylenes, thermoplastic acrylonitrile/butadiene/styrene graft copolymers, thermoplastic polybutylene terephthalates, thermoplastic polyethylene terephthalates, and mixtures thereof and (C) from 0.5 to 10 percent by weight based on the amount of (A) and (B), of a processing aid which is an acrylic polymer having a number average molecular weight of from 500,000 to 1,500,000. The acrylic polymers are preferably selected from the group consisting of homopolymers of methyl methacrylate and n-butyl methacrylate, copolymers of methyl methacrylate and ethyl acrylate and terpolymers of methyl methacrylate, n-butyl acrylate and styrene, said homopolymers, copolymers and terpolymers having number average molecular weights of from 500,000 to 1,500,000.