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:
Nov. 03, 1981
Filed:
Apr. 03, 1980
Applicant:
Inventor:
Daniel L Dufour, Longmeadow, MA (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526 65 ; 525 74 ; 526272 ;
Abstract
A tetrapolymer of .alpha.-methylstyrene, styrene, maleic anhydride and acrylonitrile is prepared by mass/suspension batch process without the need for staged late addition of monomers. The tetrapolymer is useful as a replacement for SAN as diluent in the preparation of ABS-type polymers.