C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 77/44 (2006.01) C07F 7/18 (2006.01)
Patent
CA 2273131
To provide a novel branched siloxane-silalkylene copolymer whose molecule contains a plural number of silicon-bonded hydrogen atoms or silicon- bonded alkoxy groups. Carbosiloxane dendrimer that contains at least one siloxane unit with the general formula X1R1 aSiO(3-a)/2 {R1 is C1 to C10 alkyl or aryl, a is an integer from 0 to 2, and X1 is the silylalkyl group with the following formula at i = 1 Image (R1 is C1 to C10 alkyl or aryl, R2 is C2 to C10 alkylene, R3 is C1 to C10 alkyl, Xi + 1 is the hydrogen atom or the above-defined silylalkyl group at i = i + 1, i is an integer with a value from 1 to 10 that specifies the generation of the said silylalkyl group, and b1 is an integer from 0 to 3 with the proviso that b1 in at least one X1 in each molecule is an integer from 0 to 2)} wherein when more than 1 is present these siloxane units may be the same or different, and whose core is a polysiloxane structure that contains at least 2 silicon atoms and the aforesaid siloxane unit(s).
Onodera Satoshi
Yoshitake Makoto
Dow Corning Toray Silicone Company Ltd.
Gowling Lafleur Henderson Llp
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