Room temperature quick curable organopolysiloxane composition ex

Details Room temperature quick curable organopolysiloxane composition ex Room temperature quick curable organopolysiloxane composition ex

1994-10-25

1996-01-09

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524861, 524863, 528 10, 528 12, 528 21, 528 25, 528 28, C08J 300, C08K 320, C08L 8300, C08G 7700

Patent

active

054829925

ABSTRACT:
A room temperature curable rubber composition of a condensation curing type that comprises as a base polymer a diorganopolysiloxane or a polyoxyalkylene in which both ends of the molecular chain are blocked with a hydrolyzable silyl group, and a .beta.-dicarbonyl compound and an amino group containing organic compound that are blended with the base polymer. Since the room temperature curable rubber composition is cured with water in the air and at the same time the dehydration condensation of the .beta.-carbonyl group and the amino group produces water in the composition, the quick curability and deep curability are improved remarkably. In addition, since this dehydration condensation reaction is an irreversible reaction, the product produced by the condensation dehydration is hydrolyzed to prevent the amino group containing compound from being regenerated, and as a result the hydrophilic nature of the cured product is prevented from increasing not to damage the water resistance.

REFERENCES:
patent: 4680364 (1987-07-01), Lucas
patent: 5196477 (1993-03-01), Arai et al.
patent: 5319050 (1994-06-01), Kimura et al.

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