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:
Nov. 11, 1980
Filed:
Dec. 09, 1976
Milutin Simic, Novato, CA (US);
Chevron Research Company, San Francisco, CA (US);
Abstract
A composition comprising at least 50 weight percent sulfur, a sulfur plasticizer, and an aromatic polysulfide which is formed by reacting one mol of an aromatic carbocyclic or a heterocyclic compound, substituted by at least one functional group of the class --OH or --NHR in which R is H or lower alkyl, with at least two mols of sulfur. Preferred sulfur plasticizers are aliphatic linear polysulfides, and preferred aromatic polysulfides are formed using phenol. The composition typically also contains an inorganic filler such as mica or asbestos. The composition is especially useful for obtaining surface coatings which are resistant to delamination, cracking and crazing upon exposure to weather conditions.