Method for obtaining polymer/bitumen blends with improved stabil

Details Method for obtaining polymer/bitumen blends with improved stabil Method for obtaining polymer/bitumen blends with improved stabil

1993-11-30

1995-09-05

Walsh, Donald P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 68, 524 71, 1062811, C08L 9500

Patent

active

H00014842

ABSTRACT:
The present invention is an improvement in a process for producing a blend of bitumen and a block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene comprising mixing from 88 to 99.5 weight percent of bitumen with 0.5 to 12 weight percent copolymer at 135.degree. to 250.degree. C., agitating the mixture for at least 30 minutes, adding 0.01 to 2 weight percent sulfur and maintaining the mixture under agitation for at least 30 minutes. The improvement comprises utilizing high shear mixing at a shear rate of at least 10,000 second.sup.-1 to provide said agitation.

REFERENCES:
patent: H876 (1991-01-01), Gilmore et al.
patent: 4145322 (1979-03-01), Maldonado et al.
patent: 4330449 (1982-05-01), Maldonado et al.
patent: 4412019 (1983-10-01), Kraus
patent: 4503176 (1985-03-01), Barlow et al.
patent: 4554313 (1985-11-01), Hagenbach et al.
patent: 4567222 (1986-01-01), Hagenbach et al.
patent: 5019610 (1991-05-01), Sitz et al.
patent: 5078905 (1992-01-01), Trinh et al.
patent: 5118733 (1992-06-01), Gelles et al.
patent: 5120777 (1992-06-01), Chaverot et al.

Affiliated with

Also associated with

Rating

Method for obtaining polymer/bitumen blends with improved stabil does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for obtaining polymer/bitumen blends with improved stabil, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for obtaining polymer/bitumen blends with improved stabil will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-465934