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. 26, 2002
Filed:
Aug. 04, 2000
Roger W. Faulkner, Whitman, MA (US);
Immix Technologies, Inc., Hanover, MA (US);
Abstract
The invention involves a means of increasing the scorch delay period (scorch time) for standard bisphnol-cured fluoroelastomers (abbreviated as “FKM;” these are copolymers of vinylidene fluoride and hexafluoropropene, optionally also containing additional monomers such as tetrafluoroethylene). The invention entails particular subtituted monophenols (butylparaben or propylparaben) and/or mixtures of these with methylparaben and/or inorganic solids, and the inclusion of these particular substituted monophenols and/or blends in an FKM compound. These particular substituted monophenols are effective as scorch inhibitors of bisphenol-cured FKM, and are also effective as processing aid.