Process for preparing bitumen/rubber compositions

Details Process for preparing bitumen/rubber compositions Process for preparing bitumen/rubber compositions

2008-03-04

2008-03-04

Szekely, Peter (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S071000

Reexamination Certificate

active

07338991

ABSTRACT:
In methods of preparing asphalt and elastomeric polymer compositions, it has been discovered that for a given crosslinker or vulcanizing agent there is an optimum crosslinking temperature to give a composition that has top and bottom softening points that are close. That is, rubber/asphalt compatibility is improved, where the crosslinking is performed within the optimum temperature range.

REFERENCES:
patent: 5382612 (1995-01-01), Chaverot et al.
patent: 6025418 (2000-02-01), Defoor et al.
patent: 6180697 (2001-01-01), Kelly et al.
patent: 6429241 (2002-08-01), Liang
patent: 6713540 (2004-03-01), Rached et al.

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