Free films made of cured organopolysiloxane resins, process...

Stock material or miscellaneous articles – Composite – Of silicon containing

Reexamination Certificate

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C264S236000, C264S331110, C428S447000, C525S478000

Reexamination Certificate

active

07960030

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: [R1aR23-aSiO1/2]v[R3SiO3/2]w(1) or [R1aR23-aSiO1/2]x[R3SiO3/2]y[SiO4/2]z(2) (where R1designates 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; R2designate alkenyl groups having 2 to 6 carbon atoms; R3designates alkyl groups with 1 to 4 carbon atoms or univalent aromatic hydrocarbon groups having 6 to 8 carbon atoms; at least 50 mole % of R3groups 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.

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English language abstract for JP7294701 extracted from espacenet.com Jan. 31, 2007.
English language abstract for JP7306301 extracted from espacenet.com Jan. 26, 2007.
English language abstract for JP8134358 extracted from espacenet.com Jan. 31, 2007.
English language abstract for JP54130948 extracted from espacenet.com Jan. 31, 2007.
English language abstract for JP611674081 extracted from espacenet.com Jan. 31, 2007.
English language abstract for JP2001138340 extracted from espacenet.com Jan. 31, 2007.
English language abstract for JP2002356617 extracted from espacenet.com Jan. 26, 2007.
English language abstract for JP2004361692 extracted from espacenet.com Jan. 26, 2007.
English language abstract for WO0174927 extracted from espacenet.com Jan. 26, 2007.
English language abstract for WO03104329 extracted from espacenet.com Jan. 26, 2007.

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