Bituminous composition

Details Bituminous composition Bituminous composition

1996-09-13

1998-08-25

Szekely, Peter A.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C08L 9500

Patent

active

057984018

ABSTRACT:
A bituminous composition comprising a bituminous component and a block copolymer composition which comprises at least one of the group consisting of linear triblock copolymers, multi-armed block copolymers, and diblock copolymers, which block copolymers comprise at least one block of a monovinylaromatic hydrocarbon (A) and at least one block of a conjugated diene (B), wherein the block copolymer composition which is present in an amount in the range of from 1 to 10% wt, based on total bituminous composition has a vinyl content of at least 25% by weight, based on the total diene content, and any diblock copolymer (AB) present has an apparent molecular weight in the range of from 60,000 to 100,000.

REFERENCES:
patent: 3639521 (1972-02-01), Hsieh
patent: 4129541 (1978-12-01), Marrs et al.
patent: 4412019 (1983-10-01), Kraus
patent: 4530652 (1985-07-01), Buck et al.

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