Sealant compositions

Details Sealant compositions Sealant compositions

1979-11-29

1981-05-12

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

525438, 528176, 560152, 560154, C08G 6368, C08G 7500

Patent

active

042673070

ABSTRACT:
A sealant composition based on a mercaptan-terminated liquid polymer, fillers, plasticizer, and curing agent wherein the liquid mercaptan-terminated polymer employed is prepared from a mercapto acid or mercapto acid ester and a polyoxypropylene glycol, the polyoxypropylene glycol having been end-capped with ethylene oxide prior to esterification to give primary alcohol terminal groups. The cured sealant based on the ethylene oxide-end capped polymer exhibits a non-tacky surface, whereas a cured sealant based on a propylene oxide end-capped glycol exhibits a tacky surface.

REFERENCES:
patent: 3258495 (1966-06-01), LeFave et al.
patent: 3352810 (1967-11-01), Cameron et al.
patent: 3459787 (1969-08-01), Weesner
patent: 3737415 (1973-06-01), Kenton
patent: 3817936 (1974-06-01), Jones et al.
patent: 3849381 (1974-11-01), Doss et al.
patent: 3850886 (1974-11-01), Doss et al.
patent: 4060519 (1977-11-01), Doss et al.
patent: 4113707 (1978-09-01), Louthan
Wyandotte Key Chemicals for the Urethane Industry.

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