Sulfur foam process and product

Details Sulfur foam process and product Sulfur foam process and product

1978-12-13

1980-08-26

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Pore forming

10628734, C08K 306, C09K 300

Patent

active

042193648

ABSTRACT:
A process for producing a sulfur foam containing at least 50 weight percent sulfur which comprises contacting and reacting molten sulfur with phenol or an aliphatic polysulfide to thereby obtain a phenol-sulfur adduct or an aliphatic polysulfide-sulfur adduct and contacting and reacting the adduct with maleic anhydride at a temperature between about 100.degree. and 190.degree. C. to thereby obtain a sulfur foam. In the case of phenol, preferably the phenol is reacted with the sulfur in the presence of a hydroxide base.

REFERENCES:
patent: 1636596 (1927-07-01), Ellis
patent: 3337355 (1967-08-01), Dale et al.
patent: 3353978 (1967-11-01), Davie
patent: 3434852 (1969-03-01), Louthan
patent: 3674525 (1972-07-01), Louthan
patent: 3965067 (1976-06-01), Jin
patent: 4022857 (1977-05-01), Dale et al.

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