The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 1978
Filed:
Jul. 26, 1976
Applicant:
Inventor:
Gar Lok Woo, Tiburon, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08J / ;
U.S. Cl.
CPC ...
521117 ; 260 / ; 260 / ; 260 / ; 260858 ; 2608 / ; 521132 ; 521155 ; 521157 ; 521120 ;
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.