Composites of lignin and biologically active materials

Details Composites of lignin and biologically active materials Composites of lignin and biologically active materials

1976-03-17

1977-05-31

Hollrah, Glennon H.

Chemistry: fertilizers

Processes and products

Forms or conditioning

71DIG1, 424 19, 424 22, A01N 912

Patent

active

RE0292389

ABSTRACT:
The subject invention is directed to composites of lignin and biologically active materials. The composites consist of a biologically active agent dispersed throughout an alkali lignin material in a ratio of .1:1 to 1:10 of the biologically active agent to alkali lignin. The biologically active agent is either entrapped by the lignin macromolecular matrix or held by physical-chemicalforces of van der Waal's, hydrogen bonding or ion association types. The active agent is slowly released on application either by diffusion through the lignin solid, or through degradation or dissolution of the lignin. The composites are obtained by a variety of processes including the coprecipitation-inclusion from an aqueous alkaline lignin solution by adding acid or salts, the drying of a precipitated lignin slurry biologically active agent dispersion, or the elimination of a common solvent from a lignin-biologically active organic agent mixture. The biologically active agent may be incorporated in the lignin matrix at dimensions varying from molecular size to droplet or particle sizes.

REFERENCES:
patent: 2725336 (1955-11-01), Sumner et al.
patent: 2919182 (1959-12-01), Harman et al.
patent: 3052598 (1962-09-01), Racusen
patent: 3172752 (1965-03-01), Pierce
patent: 3212967 (1965-10-01), McFadden et al.
patent: 3223697 (1965-12-01), Ball et al.
patent: 3296158 (1967-01-01), Dimitri
patent: 3336129 (1967-08-01), Herrett et al.
patent: 3470148 (1969-09-01), Allan
patent: 3632739 (1972-01-01), Kornblum
patent: 3699091 (1972-10-01), Dimitri et al.
patent: 3699093 (1972-10-01), Dimitri
patent: 3726850 (1973-04-01), Detroit
patent: 3813236 (1974-05-01), Allan
patent: 3820976 (1974-06-01), Wells et al.
Akagne et al., "Antifouling Polymers for etc.," (1973) CA79, No. 101570x (1973).
Levin et al., "Use of Lignin as a Herbicide," (1968) CA70, No. 19132m (1969).

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