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. 22, 1983
Filed:
Jan. 18, 1983
Hans-Ferdinand Muisers, Cologne, DE;
Dieter Arlt, Cologne, DE;
Manfred Jautelat, Burscheid, DE;
Heinrich Alberts, Odenthal, DE;
Fritz Mietzsch, Bergisch-Gladbach, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
A vinyl acylanhydrocitrate of the formula ##STR1## in which R denotes hydrogen or lower alkyl is disclosed. The vinyl acylanhydrocitrates can be prepared by initially contacting citric acid with a carboxylic anhydride or carbonyl chloride followed by transesterification of the reaction product either with vinyl acetate in the presence of a catalyst or with acetylene. The vinyl acylanhydrocitrates can be polymerized or copolymerized to form useful products useful for inclusion in adhesive compositions, for crosslinking in coating systems and duromers or, after ring opening with bases, as dispersing auxiliaries or agents to increase the viscosity of aqueous systems.