Organopolysiloxane composition

Details Organopolysiloxane composition Organopolysiloxane composition

1986-10-14

1988-05-03

Marquis, Melvyn I.

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

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Patent

active

047420928

ABSTRACT:
The curable organopolysiloxane composition of the invention is formulated with two kinds of crosslinking agents including an organosilane compound having 2 or 3 isopropenyloxy groups in a molecule and an organopolysiloxane having at least 2 mercapto groups in a molecule added to the base ingredient of a hydroxy-terminated diorganopolysiloxane together with a curing catalyst and a photosensitizer. The composition has two-way curability by the condensation reaction in the presence of atmospheric moisture between the silanolic hydroxy groups and the isopropenyloxy groups and by the ultraviolet-induced addition reaction between the isopropenyloxy groups and the mercapto groups to exhibit very reliable curing behavior giving a cured rubbery elastomer having excellent properties.

REFERENCES:
patent: 4485206 (1984-11-01), Inoue et al.
patent: 4579636 (1986-04-01), Inoue et al.

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