Title:
PROCESS FOR DEVULCANIZING VULCANIZED FLUOROELASTOMERS, FLUOROELASTOMERS THEREOF AND THEIR USE
Document Type and Number:
WIPO Patent Application WO/2013/132523
Kind Code:
A8
Abstract:
A process for devulcanizing fluoroelastomers having a fluorine content between 62% and 74% by weight vulcanized by ionic systems, preferably selected from bisphenol A and bisphenol AF, i.e. 2,2-bis(4-hydroxyphenyl)hexafluoropropane, said process being characterized in that it comprises a step of heating said vulcanized fluoroelastomers in the presence of a hydrolysis composition consisting of one or more chemical selected from water, water soluble alcohols, water soluble glycols and mixtures thereof, at a temperature from 350°C to 430°C. Fluoroelastomers obtainable by said process and their use for the preparation of compounds and vulcanized compositions are also described.
Inventors:
CERVELATTI ALESSANDRO (IT)
VIOLA GIAN TOMMASO (IT)
VIOLA GIAN TOMMASO (IT)
Application Number:
PCT/IT2013/000061
Publication Date:
April 02, 2015
Filing Date:
February 28, 2013
Export Citation:
Assignee:
DOTT VIOLA & PARTNERS CHEMICAL RES S R L (IT)
International Classes:
C08J11/14; C08J11/24; C08L17/00; C08L27/12
Attorney, Agent or Firm:
PIPPARELLI, Claudio (Via Quadronno 6, Milano, IT)
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