Room temperature curable organopolysiloxane
AssigneeShin-Etsu Chemical Co., Ltd.
InventorToshio Takago
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AssigneeShin-Etsu Chemical Co., Ltd.
InventorToshio Takago
Estimating the term…
Novel room temperature curable organopolysiloxane compositions which are stable as ready mixed for a long period of time when kept in an air-tight container and readily curable at room temperature to form rubber-like elastomers when exposed to the moisture-containing air. The composition comprises a diorganopolysiloxane terminated at both chain ends with hydroxy groups, an organosilane having in a molecule 3 or 4 substituted or unsubstituted vinyloxy groups or a partial hydrolysis-condensation product thereof, and an organosilane or an organopolysiloxane having in a molecule at least one monovalent group expressed by the general formula of the type (R.sub.2 N).sub.2 C.dbd.N--, where R is a hydrogen atom or a monovalent hydrocarbon group. The compositions are free from toxicity and offensive odor as well as corrosiveness against various substrate surfaces, especially of metals.
An organosilane or an organopolysiloxane having in a molecule at least one monovalent group represented by the general formula ##STR15## wherein R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are each a hydrogen atom or a monovalent hydrocarbon group and the group represented by formula (I) is bonded to the silicon atom by a divalent group.
The organosilane of claim 1 having the formula ##STR16## wherein m is a positive integer of 2, 3, or 4,
Dependencies are inferred from the claim text.