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. 14, 1995
Filed:
Mar. 26, 1991
Jeffrey H Wengrovius, Schenectady, NY (US);
Timothy B Burnell, Schenectady, NY (US);
Virginia M Van Valkenburgh, West Lebanon, NY (US);
Other;
Abstract
Solventless and high solids-containing silicone pressure sensitive adhesive compositions having high peel adhesion and high tack are provided, comprising (A) a toluene-soluble resinous copolymer containing R.sub.3 SiO.sub.1/2 units and SiO.sub.4/2 units; (B) a vinyl-terminated polydiorganosiloxane; (C) a hydrogen-terminated polydiorganosiloxane; (D) a hydrosilation catalyst; and (E) from 0 to about 10 percent by weight of an organic solvent; provided that the combined viscosity of (B) and (C)is from about 10 to about 500 centipoises at 25.degree. C., the combined crosslink densities of (B) and (C) is from about 0.3 to about 5.0%, preferably 0.3 to about 2.0%, and the molar ratio of silicon-bonded hydrogen groups in (C) to silicon-bonded alkenyl groups in (B) is in the range of from about 0.8:1 to about 1.5:1 and preferably about 1:1.