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. 03, 2015
Filed:
Jul. 04, 2013
Wacker Chemie Ag, Munich, DE;
Alfred Popp, Unterhaching, DE;
WACKER CHEMIE AG, Munich, DE;
Abstract
Organopolysiloxanes containing units of the formulae ORSi—Y—(SiRO)and RSiOare prepared by catalyzed reaction, in a first step, of a mixture of XRSi—Y—(SiRX)and RSiXand siloxanes which have structural units of the formulae ORSi—Y—(SiRO)and RSiOand having weight average molar mass of 100 to 950 g/mol and reacting the mixture obtained therefrom with water or aqueous acid, producing organopolysiloxanes having a weight average molar mass of 1,000 to 100,000 g/mol, wherein R and Reach are monovalent CSiC-bonded organic groups optionally containing one or more N and/or O atoms, Y is a 2-12 valent Corganic group optionally containing one or more O atoms, X is a hydrolyzable group, a is 0 or 1, b is 1 to 11, and c is 0, 1, 2, or 3.