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:
Apr. 07, 2020
Filed:
Dec. 09, 2016
Rohm and Haas Company, Collegeville, PA (US);
Michael T. Petr, Collegeville, PA (US);
Paul R. Van Rheenen, Warminster, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The present invention provides vinyl halide polymer thermoplastic polymer compositions comprising a multi-stage, or, preferably, two-stage acrylic copolymer polymeric additive having (A) a high Tg, high molecular weight first stage polymer that is free of, in copolymerized form, vinyl aromatic monomers, and having (B) a low Tg, low molecular weight second stage polymer of copolymerized vinyl aromatic containing monomers, wherein the multi-stage acrylic copolymer can be isolated by coagulation and drying and provides compositions having both melt strength and lubrication in thermoplastic processing.