Methylolated kraft lignin polymer resin

Details Methylolated kraft lignin polymer resin Methylolated kraft lignin polymer resin

1976-12-20

1978-09-12

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

156335, C08H 502, C08G 824

Patent

active

041136756

ABSTRACT:
A highly cross linkable methylolated kraft lignin resin for use as a high wet strength adhesive and the like, in which premethylolated kraft lignin of kraft or soda black liquor is combined with a phenolic cross linking agent, which is optionally methylolated, at a pH in the range of pH 4 to pH 7. The lignin is methylolated under alkaline conditions and then may either be acidified to provide an aqueous dispersion or dissolved in a fugitive base such as ammonium hydroxide so as to be brought into close association with the mutually soluble phenolic cross linking agent. The resin is cross linked by conventional heat curing techniques.

REFERENCES:
patent: 3090700 (1963-05-01), Ball et al.
patent: 3185654 (1965-05-01), Ball et al.
patent: 3454508 (1969-07-01), Herrick et al.
patent: 3864291 (1975-02-01), Enkvist

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