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US 11,597,816 B2Granted
Peroxide-cured halogenated elastomers having a silicon-containing superficial layer
Assignee3M Innovative Properties Company
InventorsTatsuo Fukushi, Tho Q. Nguyen, Allen M. Sohlo
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Abstract
Described herein is curable composition comprising a partially halogenated elastomeric gum comprising a plurality of cure sites selected from at least one of iodine, bromine, and nitrile; a silicon-containing compound; a dehydrohalogenation agent; and a peroxide cure system. Upon curing, a silicon-containing superficial layer forms, which can provide good chemical stability, increased durability, non-tackiness, and a matte finish to the cured elastomer.
Claims19
A curable partially halogenated elastomeric gum composition comprising:
- (a) a partially halogenated elastomeric gum comprising (i) at least 25% halogen by weight, wherein the halogen is at least one of fluorine and chlorine and (ii) a plurality of cure sites wherein the cure sites are selected from at least one of iodine, bromine, or nitrile;
- (b) at least 0.01 parts by mass of a silicon-containing compound per 100 parts by mass of the partially halogenated elastomeric gum;
- (c) at least 1 mmol and at most 10 mmol of a dehydrohalogenation agent per 100 parts by mass of the partially halogenated elastomeric gum;
- and
- (d) a curing system, wherein the curing system consists of a peroxide and a coagent.
2 more elements
Dependencies are inferred from the claim text.