Curable fluoropolymer compositions comprising bis phthalonitrile-containing compound and cured articles therefrom
Assignee3M Innovative Properties Company
InventorsMichael H. Mitchell, Benjamin J. Anderson, Gregg D. Dahlke, Tatsuo Fukushi
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Abstract
Described herein are fluoropolymer compositions comprising a bis phthalonitrile-containing compound. In one embodiment, the bis phthalonitrile-containing compound is used to crosslink a dehydrohalogenated polymer, and optionally with a polyhydroxy curative. In another embodiment, the bis phthalonitrile-containing compound is added to a composition comprising (i) a fluorinated elastomeric gum, wherein the fluorinated elastomeric gum comprises a fluoropolymer having a cure-site and (ii) a peroxide curing system.
Claims16
A curable composition comprising (a) a partially fluorinated polymer, wherein the backbone of the partially fluorinated polymer comprises carbon-carbon double bonds or is capable of forming carbon-carbon double bond, and (b) a compound of Formula I
- wherein X1 and X2 are independently selected from O or S, and L is
- wherein R is selected from the group consisting of —S—, —O—, —C(CF3)2—, —C(CH3)2—, —CH2—, —SO2—, —C(═O)—, or —C(CH3)2—C6H4—C(CH3)2—;
- each R″ is independently selected from a methyl, methoxy, ethyl, and ethoxy group;
- and each R″ is independently selected from a methyl, methoxy, ethyl, or ethoxy group.
A curable composition comprising (a) a fluorinated elastomeric gum comprising a fluoropolymer, wherein the fluoropolymer comprises at least one of —I, —Br, and —CN cure site, (b) a peroxide curing system comprising a peroxide and a coagent, and (c) a compound of Formula I
- wherein X1 and X2 are independently selected from O or S, and L is
- wherein R is selected from the group consisting of —S—, —O—, —C(CF3)2—, —C(CH3)2—, —CH2—, —SO2—, —C(═O)—, or —C(CH3)2—C6H4—C(CH3)2—;
- each R′ is independently selected from a methyl, methoxy, ethyl, and ethoxy group;
- and each R″ is independently selected from a methyl, methoxy, ethyl, or ethoxy group.
Dependencies are inferred from the claim text.