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:
Jul. 04, 1978
Filed:
Nov. 08, 1976
Applicant:
Inventor:
Frank J Hahn, Wilbraham, MA (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
526 13 ; 526 47 ; 526 56 ; 560 85 ;
Abstract
Carboxylated styrene allyl alcohol copolymers are prepared by reaction of trimellitic anhydride and a hydroxy copolymer under controlled conditions to minimize polyester formation. The hydroxy copolymer is a copolymer of styrene or a substituted styrene and allyl alcohol or methallyl alcohol containing from 1.8 to 10 weight percent hydroxyl. At least one hydroxy group per molecule and preferably 20-80 percent of the hydroxyls of the hydroxy copolymer are reacted with trimellitic anhydride. The carboxylated styrene allyl alcohol copolymers can be used in aqueous or organic solvent solution in adhesive and surface coating applications.