1,2,3,4,4a,9a-Hexahydro-9,10-anthracene-dione, its preparation a

Details 1,2,3,4,4a,9a-Hexahydro-9,10-anthracene-dione, its preparation a 1,2,3,4,4a,9a-Hexahydro-9,10-anthracene-dione, its preparation a

1979-06-27

1980-11-25

Douglas, Winston A.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

260369, 162 82, 162 90, 260365, D21C 320, D21C 910, C07C 4968

Patent

active

042356660

ABSTRACT:
A new industrial product, namely 1,2,3,4,4a,9a-hexahydro-9,10-anthracene-dione, is disclosed together with a process for its preparation and its use in conventional alkali metal hydroxide cook or Kraft cook processes for the delignification of lignocellulose materials.

REFERENCES:
patent: 1890040 (1932-12-01), Luttringhaus et al.
patent: 3574716 (1971-04-01), Coffey
patent: 4012280 (1977-03-01), Holton
patent: 4036681 (1977-07-01), Holton

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