Elastomeric copolymers of tetrafluoroethylene containing phenoxyethyl groups,and their vulcanization
Abstract
Abstract NOVEL ELASTOMERIC COPOLYMERS OF TETRAFLUOROETHYLENE WITH (1) (A) AN ALKYL VINYL ETHER, OR EITHER (B) AN OLEFIN WHICH IS FROM 50 TO 100 MOLE PERCENT OF PROPYLENE, BUTENE-1 OR A MIXTURE OF THEM, ANY REMAINDER BEING ETHYLENE OR ISOBUTYLENE, OR (C) ETHYLENE AND ISOBUTYLENE IN ABOUT EQUIMOLAR PROPORTIONS, AND (2) 0.5 TO 5 PERCENT BY WEIGHT OF THE PRODUCT OF A CURE-SITE MONOMER WHICH IS AN ARYLOXYALKYL VINYL ETHER, ARE MADE BY CATALYTICALLY UNITING THE COMPONENTS IN AN INERT MEDIUM. THE COPOLYMER PRODUCTS ARE CLEANLY, QUICKLY AND EFFICIENTLY CURED BY MIXING WITH SMALL AMOUNTS OF POLYFORMALDEHYDE OR METHYLOL-CONTAINING CONDENSATION PRODUCTS OF FORMALDEHYDE WITH UREA, PHENOL, OR MELAMINE UNDER NONBASIC, PREFERABLY ACIDIC, CONDITIONS TO FORM NOVEL ELASTOMERIC PRODUCTS HAVING IMPROVED ELASTIC PROPERTIES.
Inventors
- 👤 Rolland S Ro
Bibliographic Details
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