Room temperature-curable polyoxyalkylene polyether compositions

Details Room temperature-curable polyoxyalkylene polyether compositions Room temperature-curable polyoxyalkylene polyether compositions

1980-03-04

1981-11-24

Briggs, Sr., Wilbert J.

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

Synthetic resins

From silicon reactant having at least one...

525477, 525404, 525409, 528 34, 528 35, C08G 7716, C08L 8312

Patent

active

043025714

ABSTRACT:
A novel room temperature-curable composition is provided by the invention, of which the base polymer is a polyoxyalkylene polyether terminated at both chain ends with silanolic hydroxy groups. The composition comprises 100 parts by weight of the above silanol-terminated polyoxyalkylene polyether and 1 to 30 parts by weight of an organosilane or organopolysiloxane having, in a molecule, at least two hydrolyzable groups bonded to the silicon atoms which serves as a crosslinking agent. The composition can be stored for a long period of time when kept with exclusion of atmospheric moisture and, when exposed to the atmosphere, is rapidly cured into a rubbery elastomer having good mechanical properties. Tack-free drying of the composition is accelerated when an alkenyloxy-containing silane is used as the above-mentioned silane having hydrolyzable groups in combination with a guanidyl-containing organosilicon compound.

REFERENCES:
patent: 3655598 (1972-04-01), Antonen et al.
patent: 3776977 (1973-12-01), Chadha
patent: 3950588 (1976-04-01), McDougal

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