Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1979-03-20
1980-09-02
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
260 18S, 260 37SB, 528 11, 528 32, 528 33, 528 34, 528 38, 528901, C08G 7706
Patent
active
042207487
ABSTRACT:
A room temperature curable polyorganosiloxane composition comprising (A) 100 parts by weight of a silanol-terminated polydiorganosiloxane having a viscosity of 500 to 200,000 cSt measured at 25.degree. C., (B) 0.5 to 25 parts by weight of an acetoxy group-containing organic silicon compound selected from the group consisting of acetoxy group-containing silanes represented by the following formula and partially hydrolyzed products thereof: ##STR1## wherein R.sup.1 stands for a monovalent substituted or unsubstituted hydrocarbon group, R.sup.2 is a monovalent group selected from the group consisting of alkyl groups and alkoxyalkyl groups, a is a number of 0 or 1, and b is a number of 0 or 1,
and (C) 0.01 to 10 parts by weight of the reaction product of the reaction between (1) an aminoalkyl group-containing organic silicon compound selected from the group consisting of aminoalkyl group-containing silanes represented by the following formula and partially hydrolyzed products thereof: ##STR2## wherein R.sup.3 stands for a hydrogen atom or a monovalent substituted or unsubstituted hydrocarbon group, R.sup.4 stands for a divalent hydrocarbon group, R.sup.5 stands for a monovalent substituted or unsubstituted hydrocarbon group, R.sup.6 is a monovalent group selected from the group consisting of alkyl groups and alkoxyalkyl groups, and c is a number of 0 or 1,
and (2) an anhydride of a polybasic acid.
REFERENCES:
patent: 3661817 (1972-05-01), Hamilton et al.
patent: 3766127 (1973-10-01), Clark et al.
patent: 3816359 (1974-06-01), Creames
Hashimoto Mitsuyoshi
Hosokawa Kiyoshi
Murai Bunjirou
Marquis Melvyn I.
Toshiba Silicone Co. Ltd.
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