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:
Oct. 03, 1989
Filed:
Feb. 09, 1988
Applicant:
Inventors:
Wilhelmus G Duyzings, Born, NL;
Lambert Van Lumig, Grathem, NL;
Assignee:
Stamicarbon B.V., Geleen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525 84 ; 525 74 ; 525 80 ; 525 83 ; 525 85 ;
Abstract
The invention relates to a process for the preparation of a thermoplastic consisting of a vinylaromatic compound, acrylonitril and a butadiene rubber, by means of a two-step polymerization reaction characterized in that 0.1-10 wt. % of the butadiene rubber based on the entire composition, is replaced by an acrylate rubber in the second step. The process results in a decreased concentration of residual monomers.