Sulfur-curable compositions

Details Sulfur-curable compositions Sulfur-curable compositions

1975-04-21

1977-04-12

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 318Z, 260 338R, 260 37R, 260 75S, 260 791, 260874, 260897R, C08F 2800

Patent

active

040174670

ABSTRACT:
Compositions comprising polymercaptan-terminated polymers such as poly(oxyalkylene)-polyester-poly(monosulfide)-polythiols having an average of more than two mercapto groups per molecule, sulfur as the curing agent, and an alkaline earth metal oxide curing agent accelerator are curable to sealant or coating compositions at ambient temperatures. The poly(oxyalkylene)-polyester-poly(monosulfide)-polythiols comprise the reaction product of (a) a mercapto-alkanoic acid, (b) a thiodialkanoic acid, and (c) a poly(oxyalkylene)polyol.

REFERENCES:
patent: 3219638 (1965-11-01), Warner
patent: 3538063 (1970-11-01), Sorg et al.
patent: 3737415 (1973-06-01), Kenton
patent: 3798192 (1974-03-01), Kenton
patent: 3817936 (1974-06-01), Jones et al.
patent: 3849381 (1974-11-01), Doss et al.
Gaylord, Polyethers, Part III, Polyalkylene Sulfides and other Polythioethers Intersciences Publishers N.Y. (1962) p. 165.

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