Room temperature curable organopolysiloxane

Details Room temperature curable organopolysiloxane Room temperature curable organopolysiloxane

1979-08-03

1981-02-03

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 28, 556415, 556424, 528 32, 528 34, 528 42, 528 43, 528901, 260 37SB, 260 4575R, 260 4575B, C08G 7726

Patent

active

042489938

ABSTRACT:
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.

REFERENCES:
patent: 3819563 (1974-06-01), Takago et al.
patent: 4020044 (1977-04-01), Crossan et al.
patent: 4180642 (1979-12-01), Takago

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