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:
Feb. 27, 1979
Filed:
Dec. 28, 1977
Applicant:
Inventor:
William J Bracke, Hamme, BE;
Assignee:
Laborfina S.A., Brussels, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
2608 / ;
Abstract
A process for producing ABS resins by copolymerizing a mixture of a styrenic compound and an unsaturated nitrile selected from the group consisting of acrylonitrile and methacrylonitrile, in the presence of an elastomer, by a two-step process comprising a mass copolymerization step and then a suspension copolymerization step, said process comprising carrying out the mass copolymerization step in the presence of p-chlorobenzoyl peroxide as an initiator and dithiobis(benzothiazole) as a chain transfer agent.