Novel organosilicon compound and a room temperature curable orga

Details Novel organosilicon compound and a room temperature curable orga Novel organosilicon compound and a room temperature curable orga

1984-03-20

1986-05-06

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

556452, 556460, 556461, 556456, C07F 708, C07F 710

Patent

active

045873542

ABSTRACT:
The invention discloses a novel cyclic organopolysiloxane compound having one or more of 3,3,3-trifluoropropyl groups and one or more of alkenyloxy groups, e.g. isopropenyloxy group of the formula --O--C(CH.sub.3).dbd.CH.sub.2, each directly bonded to the silicon atom in a molecule. This novel organopolysiloxane compound is useful as a crosslinking agent for a hydroxy-terminated diorganopolysiloxane and a formulation of a room temperature curable organopolysiloxane composition capable of giving a rubbery elastomer by curing is proposed comprising, each in a limited proportion, (a) a hydroxy-terminated diorganopolysiloxane, (b) the above disclosed novel cyclic organopolysiloxane having 2 or 3 alkenyloxy groups, (c) a second cyclic organopolysiloxane having 2 or 3 alkenyloxy groups each directly bonded to the silicon atom in a molecule and (d) a guanidino-containing organosilicon compound, e.g. 3-(tetramethylguanidino)propyl trimethyl silane, as a curing accelerator. This room temperature curable composition exhibits excellent curability and free from the problem of the formation of noxious condensation products as in the conventional RTV silicone rubber compositions.

REFERENCES:
patent: 3360538 (1967-12-01), Ashby
patent: 3373138 (1968-03-01), Brown
patent: 3555065 (1971-01-01), Hampton
patent: 3575921 (1971-04-01), Lee
patent: 4308393 (1981-12-01), Apotheker
patent: 4539418 (1985-09-01), Takago et al.

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