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:
Jun. 14, 2011
Filed:
May. 13, 2005
Maki Itoh, Tokyo, JP;
Michitaka Suto, Odawara, JP;
Nobuo Kushibiki, Fujisawa, JP;
Katsuya Eguchi, Minamiashigara, JP;
Maki Itoh, Tokyo, JP;
Michitaka Suto, Odawara, JP;
Nobuo Kushibiki, Fujisawa, JP;
Katsuya Eguchi, Minamiashigara, JP;
Dow Corning Corporation, Midland, MI (US);
Abstract
A free-standing film comprising a cured organopolysiloxane resin obtained by conducting a cross-linking reaction between (A) an organopolysiloxane resin represented by the following average siloxane unit formula: [RRSiO][RSiO](1) or [RRSiO][RSiO][SiO](2) (where Rdesignates univalent hydrocarbon groups of one or more than one type selected from alkyl groups having 1 to 4 carbon atoms and univalent aromatic hydrocarbon groups having 6 to 8 carbon atoms; Rdesignate alkenyl groups having 2 to 6 carbon atoms; Rdesignates alkyl groups with 1 to 4 carbon atoms or univalent aromatic hydrocarbon groups having 6 to 8 carbon atoms; at least 50 mole % of Rgroups being phenyl groups; 'a' is 0, 1, or 2; 0.8≦w<1.0 and v+w=1; 0<x<0.4, 0.5<y<1, 0<z<0.4, and x+y+z=1); and (B) an organosilicon compound that contains in one molecule two or more silicon-bonded hydrogen atoms, in which not less than 5 mole % of all silicon-bonded univalent groups are univalent aromatic hydrocarbon groups, in the presence of (C) a hydrosilylation catalyst.