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:
Jul. 16, 1985
Filed:
Dec. 07, 1984
Leo Ojakaar, Hockessin, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A peroxide-curable fluoroelastomer composition which comprises a fluoroelastomer whose interpolymerized units consist essentially of units derived from vinylidene fluoride, units derived from at least one other fluorine-containing monomer copolymerizable therewith, said monomer being a compound which contains 2-7 carbon atoms, contains no bromine atoms or iodine atoms, and contains at least as many fluorine atoms as carbon atoms, and said fluoroelastomer contains up to 3 mole percent of units derived from a bromine-containing olefin or 0.1-2 mole percent of units derived from an iodine-containing olefin, and from about 0.05-2 parts per 100 parts fluoroelastomer of an N,N,N',N'-tetrasubstituted 1,8-diaminonaphthalene having the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently alkyl groups of 1-6 carbon atoms, phenyl or benzyl, R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 can be joined to form a 5- or 6-membered heterocyclic ring in which a carbon atom can be replaced by an oxygen or a sulfur atom, R.sub.1 and R.sub.3 and/or R.sub.2 and R.sub.4 can be joined to form a heterocyclic ring of 6-20 carbon atoms in which a carbon atom can be replaced by an oxygen or a sulfur atom, X and Y are independently an alkyl group or an alkoxy group containing 1-4 carbon atoms and n is 0-3.