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. 26, 1998
Filed:
Dec. 27, 1996
DSM N.V., Heerlen, NL;
Abstract
The invention relates to a polymer composition comprising 5 to 79 wt. % of a graft copolymer of vinyl aromatic monomer units and monomer units chosen from the group of C.sub.1 -C.sub.4 alkyl methacrylates, C.sub.1 -C.sub.4 alkyl acrylates, methacrylonitrile and acrylonitrile on a rubber, 90 to 20 wt. % of a thermoplastic polymer with polar groups, and 1 to 50 wt. % of a terpolymer comprising a vinyl aromatic monomer, at least one monomer chosen from the group of C.sub.1 -C.sub.4 alkyl methacrylates, C.sub.1 -C.sub.4 alkyl acrylates, methacrylonitrile and acrylonitrile, and 0.2 to 5 mol % of an .alpha.,.beta.-unsaturated compound containing dicarboxylic anhydride, the wt. % of components (A), (B) and (C) being relative to the total weight of components (A), (B) and (C), characterized in that the molar mass of component (C) is comprised between 160,000 g/mol and 230,000 g/mol. The polymer composition has excellent mechanical properties, in particular a high impact resistance at low temperatures.