Method to produce polymer modified ground tire rubber

The present invention provides methods for making shelf-stable fluidizable particles that comprise mixing from 35 wt.% to 89.95 wt.%, based on total solids, of particles of one or more vulcanizate having a sieve particle size of from 10 to 800 µm, 10 to 65 wt.%, based on total solids, of one or more...

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Bibliographic Details
Main Authors HEULINGS, HARRY R. IV, LAU, WILLIE
Format Patent
LanguageEnglish
French
German
Published 27.06.2012
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:The present invention provides methods for making shelf-stable fluidizable particles that comprise mixing from 35 wt.% to 89.95 wt.%, based on total solids, of particles of one or more vulcanizate having a sieve particle size of from 10 to 800 µm, 10 to 65 wt.%, based on total solids, of one or more thermoplastic polymer in the form of an emulsion of a thermoplastic polymer in the presence of from 0.05 to 3 wt.%, based on total solids, of a passivating agent, to form a moist mixture followed by drying the moist mixture to form fluidizable particles such that the total solids content of the mixture remains 65 wt.% or more throughout processing. In addition, the invention provides plasticizer free storage stable fluidizable particles used, like the moist mixture itself, in thermoplastic processing, as well as colored fluidizable particles containing colorant in the thermoplasticshell for use in coloring or tinting polymer compositions.
Bibliography:Application Number: EP20110190329