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:
Apr. 04, 1978
Filed:
Dec. 30, 1976
Bobby F Dannels, Grand Island, NY (US);
Hooker Chemicals & Plastics Corporation, Niagara Falls, NY (US);
Abstract
An improved process for curing sulfhydryl-terminated thioether polymers substantially devoid of aliphatic unsaturation having a sulfhydryl functionality of 2 to 3 to obtain thioether elastomers is disclosed wherein the liquid thioether is reacted with a curing amount of tertiary butyl perbenzoate. Preferably the curing reaction is carried out at about ambient temperature in the presence of a copper, especially a divalent copper, promoter for the reaction. The improved curing process shortens the curing time and extends the effective working life of the curing reaction mixture. The cured products are of enhanced thermal stability and are useful as elastomeric sealants such as architectural sealants.