Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1976-07-26
1978-09-05
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
260 18TW, 260 308R, 260 37N, 260858, 260859R, 521132, 521155, 521157, 521120, C08G 5308, C08J 122
Patent
active
041118642
ABSTRACT:
A process for producing sulfur foam containing at least 50 weight percent sulfur, which comprises: (a) reacting molten sulfur with an organic protonic acid which is reactive with molten sulfur so as to incorporate the organic acid with sulfur to form a sulfur-organic acid adduct containing protonic acid groups; (b) mixing an organic surfactant agent with the adduct to obtain a mixture of adduct and surfactant agent; and then (c) reacting the mixture with a polyisocyanate to obtain sulfur foam.
REFERENCES:
patent: 3887504 (1975-06-01), Woo
patent: 3892686 (1975-07-01), Woo
patent: 3954685 (1976-05-01), Woo
patent: 4011179 (1977-03-01), Woo et al.
Bertolli A. T.
Chevron Research Company
Foelak Morton
Newell Dix A.
Stoner, Jr. John
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