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:
May. 29, 1990
Filed:
Mar. 28, 1989
Danielle M Fillmore, Midland, County, MI (US);
John G Price, South Glamorgan, GB;
Terence J Swihart, Bay County, MI (US);
Dow Corning Corporation, Midland, MI (US);
Abstract
Solventless liquid silicone resin compositions are prepared by first reacting a mixture of (A) a polydimethylsiloxane and (B) a methyltrialkoxysilane in the presence of (C) an equilibrating amount of a perfluoroalkane sulfonic acid; hydrolyzing the reaction product formed with sufficient water to provide from about 0.48 to about 0.81 mole of residual alkoxy functionality per 100 parts by weight of said liquid silicone resin; and neutralizing the acid catalyst. Alternatively, the above components can be similtaneously reacted and then neutralized to form the resins of the present invention. The liquid silicone resins are storage stable, have low viscosities and can be cured to form heat-resistant protective coatings on substrates.