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:
Aug. 07, 1990
Filed:
Sep. 19, 1988
Applicant:
Inventors:
Gunther Bernhardt, Sankt Augustin, DE;
Jurgen Amort, Troisdorf, DE;
Margret Haas, Cologne, DE;
Horst Hanisch, Hennef, DE;
Heinz Kragl, Troisdorf, DE;
Assignee:
Huels Troisdorf AG, Cologne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C97F / ; C97F / ;
U.S. Cl.
CPC ...
556440 ;
Abstract
The present invention is in the preparation of methacrylic or acryloxyalkylalkoxysilanes by the reaction at a temperature of from 80.degree. and 130.degree. C. of an alkali (meth) acrylate with a halogen alkylalkoxysilane in the presence of a quaternary ammonium salt which has long-chin alkyl moieties, in which the sum of all carbon atoms is between 10 and 40 as a phase-transfer catalyst. In the new procedure no solvents need to be used. The yields are better than 95%.