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:
Aug. 02, 1994
Filed:
May. 24, 1993
James J Scobbo, Jr, Guilderland, NY (US);
Gregory J Stoddard, Schenectady, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
Copolymer compositions useful as impact modifiers are prepared by blending, under reactive conditions, at least one functionalized addition polymer with an excess of at least one functionalized elastomer reactive therewith to form a preblend, and subsequently blending said preblend, under reactive conditions, with a further amount of at least one functionalized addition polymer. The preferred addition polymers and elastomers are carbamate-functionalized styrene-acrylonitrile copolymers and maleic anhydride-grafted EPDM elastomers, respectively. The product of the two-step blending operation is a composition comprising a continuous addition polymer phase and elastomer particles dispersed therein, said elastomer particles containing occluded addition polymer. Said composition is stabilized by copolymer formation between the elastomer particles and the addition polymer.