Solubilization of nonionic surfactants useful in wood pulp deres

Details Solubilization of nonionic surfactants useful in wood pulp deres Solubilization of nonionic surfactants useful in wood pulp deres

1982-05-05

1984-01-17

Smith, William F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 76, 162DIG3, D21C 908

Patent

active

044262540

ABSTRACT:
A process for extracting resin from wood pulp by contacting the pulp at elevated temperature with an aqueous medium comprising between about 2 and 15 percent by weight sodium hydroxide and between about 0.2 and 1.0% weight of an ethylene oxide condensation product, and also comprising in specified proportion one or more substances selected from the group consisting of a C.sub.12 alpha-olefin sulfonate and a particular C.sub.21 dicarboxylic acid. The sulfonate and dicarboxylic acid substantially enhance solubilization of the condensation product deresination agent in the highly polar aqueous medium.

REFERENCES:
patent: 2668110 (1954-02-01), Spencer et al.
patent: 2716058 (1955-08-01), Rapson et al.
patent: 2999045 (1961-09-01), Mitchell et al.
patent: 4063886 (1977-12-01), Powers et al.

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