C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
402/411
C08L 27/18 (2006.01) C08F 214/16 (2006.01) C08K 5/18 (2006.01)
Patent
CA 1246791
TITLE PEROXIDE-CURABLE BROMINATED FLUOROELASTOMER COMPOSITION CONTAINING AN N,N,N',N'-TETRASUBSTITUTED 1,8-DIAMINONAPHTHALENE ABSTRACT OF THE DISCLOSURE A peroxide-curable fluoroelastomer composition which can be readily removed from a mold cavity without tearing which comprises a fluoroelastomer whose interpolymerized units consist essentially of units of tetrafluoroethylene, units of perfluoroalkyl perfluorovinyl ether, units of a bromine-containing olefin and, optionally, units of ethylene, and from about 0.05-2 parts per 100 parts fluoroelastomer of an N,N,N',N'-tetrasubstituted 1,8-diaminonaphthalene having the formula: Image wherein R1, R2, R3 and R4 are independently alkyl groups of 1-6 carbon atoms, phenyl or benzyl, R1 and R2 and/or R3 and R4 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, R1 and R3 and/or R2 and R4 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.
513541
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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