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. 16, 1996
Filed:
Mar. 31, 1995
Martin E Cifuentes, Midland, MI (US);
Michael R Strong, Midland, MI (US);
Bernard VanWert, Midland, MI (US);
Michael A Lutz, Midland, MI (US);
Randall G Schmidt, Midland, MI (US);
Dow Corning Corporation, Midland, MI (US);
Abstract
The present invention relates to a silicone pressure-sensitive adhesive composition which cure upon exposure to ambient moisture. The moisture-curable silicone pressure-sensitive adhesive composition of the instant invention comprise: (A) an organopolysiloxane resin containing curing radicals of the formula --SiY.sub.2 ZNY'ZSiR.sup.1.sub.x Y'.sub.3-x wherein R.sup.1 is a monovalent hydrocarbon radical, each Z is a divalent linking group, each Y is independently selected from the group consisting of a monovalent organic radical, an enoloxy radical, an alkoxy radical, and an oximo radical; Y' is selected from the group consisting of a monovalent organic radical, a hydrogen atom, and --ZSiR.sup.1.sub.x Y'.sub.3-x ; Y' is selected from the group consisting of an enoloxy radical, an alkoxy radical, and an oximo radical; and the subscript x has a value of 0 or 1; (B) a diorganopolysiloxane polymer, each terminal group thereof containing at least one silicon-bonded hydrolyzable functional radicals selected from the group consisting of hydroxyl radicals, alkoxy radicals having 1 to 4 carbon atoms, ketoxime radicals, enoloxy radicals, aminoxy radicals, acetamido radicals, N-methylacetamido radicals and acetoxy radicals; said polymer having a viscosity at 25.degree. C. of 20 to <100,000 mm.sup.2 /s and the weight ratio of said resin to said polymer being in the range 5:95 to 90:10; (C) optionally, sufficient catalyst to accelerate the cure of said composition; (D) optionally a silane of the formula R.sup.2.sub.4-y SiX.sub.y or oligomeric reaction product thereof, in which R.sup.2 is selected from the group consisting of hydrocarbon radicals and substituted hydrocarbon radical having 1 to 6 carbon atoms, X is a hydrolyzable group and y is 2 to 4; and (E) optionally, a filler.