Minnesota Mining and Manufacturing Company

David A Stivers

Miguel Antonio Guerra

Richard A Guenthner

Fluorocarbon elastomer gum is compounded with fluorinated ether compositions, the resulting compounded gum is shaped and heated to form a cured shaped article such as automotive fuel line hose or O-ring.

Curing fluorocarbon elastomers

The processing of elastomer gums, which can be natural rubber or synthetic elastomers such as copolymers of vinylidene fluoride and hexafluoropropylene, are improved by incorporating in said gum, along with conventional chemical and compounding ingredients, cyanuric acid or isocyanurate or cyanurate derivatives thereof to improve the processing of such gums, for example, to improve the extrudability thereof or the release of molded articles thereof from the mold.

Processing elastomers

A composition comprising elastomeric copolymer gum of vinylidene fluoride and at least one terminally unsaturated monolefin comonomer and as a vulcanizing agent therefor a composition comprising one or a mixture of aromatic compounds having hydroxyl and oxyallyl groups directly bonded to aromatic ring-carbon atoms.

Vulcanizing fluorocarbon elastomers with one or a mixture of aromatic

A gum stock composition comprising fluoropolymer gum, polyepichlorohydrin gum, polyphenol, and organo-onium compound is mixed with acid acceptor to form a curable gum stock, and the latter is shaped and cured to form shaped elastomeric articles.

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Saint Paul, MN, United States of America

David A Stivers