Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1989-06-01
1990-12-25
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523213, 524100, 524188, 524315, 524360, 524367, 524720, 524730, 524751, 524770, 524773, 524789, 524860, 524864, 528 34, 528 40, 528 41, 528 42, C08K 906
Patent
active
049803964
ABSTRACT:
A primar composition comprising
(A) 100 parts by weight of an organo-polysiloxane represented by the formula (1) ##EQU1## wherein R.sup.1 represents a substituted or unsubstituted monovalent hydrocarbon group, and a is a number of from 1.98 to 2.01, provided that 25 to 50 mol % of the hydrocarbon group is a perfluoroalkyl group and 0.01 to 10 mol % of the hydrocarbon group is a vinyl group, said organo-polysiloxane having a viscosity as measured at 25.degree. C. of 1,000,000 centistokes or more;
(B) 5 to 100 parts by weight of a silica type filler;
(C) 0.5 to 50 parts by weight of isocyanurate-type organosilicon compound represented by the formula (2) ##STR1## wherein R.sup.2 represents an alkyl group, a fluoroalkyl group or an alkoxyalkyl group, each having 1 to 5 carbon atoms in the alkyl moiety, and n is an integer of 1 to 5; and
(D) a desired amount of an organic solvent.
REFERENCES:
patent: 3517001 (1970-06-01), Berger
patent: 3896123 (1975-07-01), DeZuba et al.
patent: 4395507 (1983-07-01), Dziark et al.
patent: 4525400 (1985-06-01), Suprenant
Marquis Melvyn I.
Toshiba Silicone Co. Ltd.
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