Sulfur-in-oil in asphalt and polymer composition and process

Details Sulfur-in-oil in asphalt and polymer composition and process Sulfur-in-oil in asphalt and polymer composition and process

1999-12-16

2000-10-17

Szekely, Peter A.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 59, 524 68, 524 71, C08L 9500

Patent

active

061333514

ABSTRACT:
A sulfur in oil in asphalt and polymer blend is disclosed. An asphalt and polymer blend is first prepared and then a slurry of solid sulfur in liquid oil added. Addition of a slurry of solid sulfur in oil or oil containing sulfur compounds, permits rapid and effective uniform dispersion of the sulfur component in the asphalt/polymer blend. Uneven mixing, which can occur when sulfur is separately added as a solid to the asphalt blend, is avoided. Polymer use is optimized because polymer matrix development (digestion/swelling) can be completed before cross-linking occurs. The method is safer because formation of explosive clouds of sulfur dust is avoided.

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