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. 10, 1990
Filed:
Apr. 13, 1987
Raymond D Burk, Wilbraham, MA (US);
Fred M Peng, Longmeadow, MA (US);
A Hameed Bhombal, Longmeadow, MA (US);
Monsanto Company, St. Louis, MO (US);
Abstract
Thermoplastic polyblends having weatherability and impact strength are formed by blending a first graft copolymer containing a conjugated diene rubber substrate having a weight average particle size between about 0.6 and about 10 microns with a second graft copolymer containing an EPDM-type rubber substrate having a weight average particle size between about 0.05 and about 1 micron or an alkyl acylate rubber substrate having a weight average particle size between about 0.05 and about 0.5 micron. The superstrate of the two graft copolymers comprises a monovinylidene aromatic hydrocarbon and an unsaturated nitrile.