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:
May. 30, 1995
Filed:
Sep. 08, 1993
Applicant:
Inventors:
Cornelis E Koning, 6436 El Schinnen, NL;
Reinoldus J Borggreve, 6336 VG Hulsberg, NL;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08L / ;
U.S. Cl.
CPC ...
525 68 ; 525 71 ;
Abstract
The invention relates to a thermoplastic polymer composition comprising a polyphenylene oxide; a graft copolymer (A), comprising a copolymer of a vinyl-aromatic compound, a vinyl cyanide and optionally a third monomer and a rubber, whereby the rubber is grafted on the backbone to the copolymer; and a graft copolymer (B) having polystyrene chains grafted on a copolymer backbone which contains units of a vinyl-aromatic compound and units of an .alpha.,.beta.-unsaturated dicarboxylic anhydride. The presence of graft copolymer (B) in the polymer composition causes a significant improvement of the notched impact resistance.