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. 12, 1983
Filed:
Aug. 31, 1981
Applicant:
Inventor:
Duane F Merrill, Ballston Spa, NY (US);
Assignee:
General Electric, Waterford, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 18 ; 524413 ; 524425 ; 524432 ; 528 12 ;
Abstract
A process for producing a low viscosity silicone resin which comprises hydrolyzing halosilanes in a heterogeneous hydrolysis mixture of water, acetone and a water-immiscible solvent where the critical aspects of the process are the addition of the chlorosilanes to the hydrolysis medium by first mixing them with a portion of the acetone and adding them to the hydrolysis mixture over a period of at least 40 minutes and maintaining the temperature of said hydrolysis medium such that it does not exceed 45.degree. C. The silicone resins produced by this process are useful in producing molding compositions having a low coefficient of thermal expansion.