Coal-tar-pitch-based compositions

Details Coal-tar-pitch-based compositions Coal-tar-pitch-based compositions

1994-02-14

1995-10-03

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 68, C08L 9500

Patent

active

054552915

ABSTRACT:
A coal-tar-pitch-based roofing composition containing coal tar pitch, a rubbery block polymer, an extender oil, and an antioxidant to retard degradation of the coal tar pitch during blending of the composition, the composition being formed by heating the coat tar pitch, adding the naphthenic extender oil and the rubbery polymer and agitating the components at an elevated temperature for a period of time until phase inversion between the coal tar pitch and the rubbery polymer occurs.

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