Mixtures of bitumen and polymer composition

Details Mixtures of bitumen and polymer composition Mixtures of bitumen and polymer composition

1995-06-06

1996-10-15

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 71, 524 68, C08L 9500

Patent

active

055655106

ABSTRACT:
A bituminous mixture having improved physical properties is obtained by adding to a bitumen a polyphosphoric acid (I) containing phosphorus, calculated as P.sub.2 O.sub.5, in amount from 80% to 87% by weight, and a polymer composition (II) comprising (A) a propylene homopolymer or copolymer, (B) optionally an ethylene copolymer fraction insoluble in xylene at ambient temperature and (C) a copolymer fraction soluble in xylene at ambient temperature.

REFERENCES:
patent: 5070123 (1991-12-01), Moran
patent: 5095055 (1992-03-01), Moran
patent: 5360849 (1994-11-01), Braga et al.

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