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:
Apr. 23, 1991
Filed:
Sep. 01, 1989
Applicant:
Inventors:
Howard M Bank, Freeland, MI (US);
Martin E Cifuentes, Midland, MI (US);
Theresa E Martin, Midland, MI (US);
Assignee:
Dow Corning Corporation, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 23 ; 528 31 ;
Abstract
This invention relates to an improved method of hydrolyzing hydridosilanes with 2 or more hydrolyzable groups which comprises forming an arylsulfonic acid hydrate containing reaction medium, adding the silane to the hydrolysis medium, facilitating hydrolysis of the silane to form the polyester, settling the hydrolysis medium and polymer into an acid layer and an organic layer containing the polymer, separating the organic layer from the acid layer, contacting the organic layer with a neutralizing agent, and removing the neutrailizing agent from the organic layer.