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. 17, 1989
Filed:
Nov. 23, 1987
Applicant:
Inventors:
Michael P Hallden-Abberton, Maple Glen, PA (US);
Leslie A Cohen, Langhorne, PA (US);
Robert S Wood, Holland, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525379 ; 5253305 ;
Abstract
Thermoplastic copolymers of glytaric anhydride and (meth)acrylic esters may be prepared free of acid groups by reacting a (meth)acrylic ester polymer with a secondary amine at elevated temperature, and subsequently removing volatile components from the polymer at elevated temperature and reduced pressure.