Stock material or miscellaneous articles – Composite – Of polythioether
Patent
1975-09-18
1977-01-11
Willis, Jr., P.E.
Stock material or miscellaneous articles
Composite
Of polythioether
427 38, 427 54, 428411, 428424, 428426, 428457, 428537, B32B 2706, B05D 306
Patent
active
040027988
ABSTRACT:
A curable composition comprising compatible polyene and polythiol in which both the components are derived from a hydantoin glycol. The polyene is typically a reaction product of N,N'-bis(2-hydroxyethyl) dimethylhydantoin, a diisocyanate and an unsaturated alcohol, e.g., allyl alcohol. The polythiol is typically a reaction product of N,N'-bis(2-hydroxyethyl) dimethylhydantoin and a mercapto carboxylic acid, e.g., .beta.-mercaptopropionic acid. Upon exposure to a free radical generator, e.g., actinic radiation, this polyene-polythiol composition cures to solid, insoluble, chemically resistant, cross-linked polythioether products.
REFERENCES:
patent: 3653959 (1972-04-01), Kehr et al.
patent: 3714290 (1973-01-01), Kehr et al.
patent: 3729404 (1973-04-01), Morgan
patent: 3839354 (1974-10-01), Habermeier et al.
patent: 3855093 (1974-12-01), Guthrie et al.
patent: 3916057 (1975-10-01), Jones et al.
Plunkett Richard P.
Prince Kenneth E.
W. R. Grace & Co.
Willis, Jr. P.E.
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