Process for the preparation of functionalized elastomer/bitumen compositions and their use in coatings
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 17, 2001
Grant Date -
N/A
app pub date -
Apr 12, 1999
filing date -
Apr 21, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a method comprising contacting, between 100.degree. C. and 230.degree. C. and under agitation, an elastomer, a functionalising agent and optionally, a peroxide compound. The functionalising agent is a thiolcarboxylic acid polyester or a reaction product of a thiolcarboxylic acid or ester with ethylene sulphide. The functionalised elastomer can also be pre-formed, then incorporated into the bitumen. The resulting compositions are usable directly or after dilution, for forming bituminous binders to produce surfacing, coating and waterproofing materials.
First Claim
Other Claims data not available