Coal liquor clarification with water-soluble, high molecular wei

Details Coal liquor clarification with water-soluble, high molecular wei Coal liquor clarification with water-soluble, high molecular wei

1986-02-06

1987-06-30

Castel, Benoit

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210738, 209 5, C02F 156

Patent

active

046769137

ABSTRACT:
Coal liquors are clarified by contacting them with high molecular weight copolymers of from about 70 to about 99 mole percent of a nonionic water-soluble monomer such as acrylamide and from 1 to 30 mole percent of a cationic monomer such as methacryloylethyl trimethyl ammonium chloride or methacrylamidopropyl trimethyl ammonium chloride.

REFERENCES:
patent: 3408293 (1968-10-01), Dajani et al.
patent: 3859212 (1975-01-01), Smalley et al.
patent: 4024328 (1977-05-01), Zweigle
patent: 4077930 (1978-03-01), Lim et al.
patent: 4104226 (1978-08-01), Melzer et al.
patent: 4141827 (1979-02-01), Coscia et al.
patent: 4396513 (1983-08-01), Haldeman

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