Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1995-03-14
1996-03-26
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
556451, C07F 708
Patent
active
055022294
ABSTRACT:
There is disclosed a diphenylsiloxane oligomer functionalized at both terminals, and methods for the preparation thereof, said oligomer having the following general formula G-(OSi(Ph).sub.2).sub.m O--G wherein Ph denotes a phenyl radical, m is 3 to 50 and G is has a formula independently selected from the group consisting of ##STR1## in which R.sup.1 is independently selected from the group consisting of hydrogen and a monovalent hydrocarbon group having 2 to 8 carbon atoms, said monovalent hydrocarbon group excluding phenyl, tolyl, xylyl, and ethylphenyl radicals, R is independently selected from the group consisting of R.sup.1, methyl radical and phenyl radical, Q is a divalent hydrocarbon group and n is an integer having a value of 1 to 3.
REFERENCES:
patent: 3655713 (1972-04-01), LeGrow
patent: 3719696 (1973-03-01), Jonas et al.
patent: 4831169 (1989-05-01), Grape et al.
patent: 5319121 (1994-06-01), Blum
Journal of the Chemical Society of Japan, Industrial Chemistry, Section, vol. 62, p. 1421 (1959).
Harkness Brian R.
Tachikawa Mamoru
Takeuchi Kasumi
Dow Corning Asia Ltd.
Shaver Paul F.
Weitz Alexander
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