Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2009-04-14
2011-12-06
Peng, Kuo-Liang (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C528S032000
Reexamination Certificate
active
08071707
ABSTRACT:
An addition-curable silicone composition is provided. The composition includes (A) a resin structure organopolysiloxane and (B) a platinum group metal-based catalyst. The component (A) has silicon-bonded alkenyl groups and hydrosilyl groups, and includes a structure in which R22SiO units, wherein R2is a methyl group, etc., are connected together in a continuous repeating sequence, and the number of units in the continuous repeating sequence is within a range from 5 to 300. The composition can be prepared in a solid or semisolid form, and hence is suitable conventional molding apparatus such as a transfer molding apparatus, and upon curing, forms a hard resin cured product that exhibits excellent flexibility and minimal surface tack.
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European Search Report for corresponding European Application No. 09251085.8 dated Jul. 28, 2009.
Birch & Stewart Kolasch & Birch, LLP
Peng Kuo-Liang
Shin-Etsu Chemical Co. , Ltd.
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