Title:
METHOD AND CHEMICAL COMPOSITION FOR RECLAIMING OF CURED ELASTOMER MATERIALS
Document Type and Number:
WIPO Patent Application WO/2010/020987
Kind Code:
A4
Abstract:
A method of reclaiming of a cured elastomer material, comprising mixing the cured elastomer in form of crumb or chips with a devulcanization-aiding chemical composition, applying a shear- stress deformation to the mixture; the devulcanization-aiding chemical composition comprises following ingredients: first agent promoting scission of sulfide bonds of free radicals formed under said shear-stress deformation, which is selected from the following classes: of amines and sulfides and their derivatives; second agent providing the pre-set acidity in the course of the process and thus inhibiting recombination of sulfide bonds, which is selected from the following classes: organic acids and their anhydrides; third agent contributing to fast stabilization of the free radicals, which is selected from the class of oxidants fourth agent promoting redox reaction, which is selected from salts of metals with variable valence; and fifth agent prevention agglomeration of said elastomer material after applying the shear-stress deformation and reduction of friction, which is selected from the class of polar sorbents or fine bio-pigments.
Inventors:
BEIRAKH LEV (IL)
Application Number:
PCT/IL2009/000808
Publication Date:
June 24, 2010
Filing Date:
August 17, 2009
Export Citation:
Assignee:
INNOVERT INVEST A L LTD (IL)
BEIRAKH LEV (IL)
BEIRAKH LEV (IL)
International Classes:
C08J11/10; C08J11/18; C08J11/22; C08J11/26; C08J11/28
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