Coal tar pitch modified by nitrile butadiene rubber

Details Coal tar pitch modified by nitrile butadiene rubber Coal tar pitch modified by nitrile butadiene rubber

1997-08-20

1998-12-29

Seidleck, James J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 61, 524484, 524485, 524486, C08L 9500

Patent

active

058543228

ABSTRACT:
A modified coal tar pitch useful in roofing applications, containing coal tar pitch, and a nitrile butadiene rubber, is blended by heating the coal tar pitch to a molten temperature, adding the rubber in powder form and agitating the material in a suitable high shear mixing apparatus until adequate phase inversion occurs between the polymer and the coal tar phase. After preparation, the material is cooled in containers until use, at which time it is heated to a flowable temperature and applied using a roofing mop or squeegee.

REFERENCES:
patent: 3391098 (1968-07-01), Kemp
patent: 3846362 (1974-11-01), Reinecke et al.
patent: 3897380 (1975-07-01), Walaschek
patent: 5455291 (1995-10-01), Bruns
patent: 5578663 (1996-11-01), McGovern

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