Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2011-01-25
2011-01-25
Peng, Kuo-Liang (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C528S010000, C528S025000, C528S030000, C528S031000, C528S033000, C523S109000, C525S478000
Reexamination Certificate
active
07875695
ABSTRACT:
A hydrophilic organopolysiloxane composition of the hydrosilylation reaction cure type for use as dental impression material is characterized by comprising as essential components (A) a diorganopolysiloxane having at least 0.1 silicon-bonded alkenyl group in a molecule, (B) a liquid or solid organopolysiloxane having average compositional formula (1), comprising SiO2units and R3SiO1/2units (R is a monovalent hydrocarbon, alkoxy or hydroxyl group) and having a viscosity of at least 10 mPa-s at 23° C., (C) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, (D) a hydrosilylation catalyst, and (E) a polyether having average compositional formula (2).
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EP 08 25 3334, European Search Report, Sep. 7, 2010, 6 pages.
Kamohara Hiroshi
Ozai Toshiyuki
Sugahara Hideki
Birch & Stewart Kolasch & Birch, LLP
GC Corporation
Peng Kuo-Liang
Shin-Etsu Chemical Co. , Ltd.
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