Binder composed of a graft copolymer of high molecular weight li

Details Binder composed of a graft copolymer of high molecular weight li Binder composed of a graft copolymer of high molecular weight li

1987-10-28

1989-10-03

Kight, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From lignin, tannin, or derivative reactant

B01F 1752

Patent

active

048718254

ABSTRACT:
A binder composed of a graft copolymer of high molecular weight sulfonated lignin material and an acrylic compound. At least 35% by weight of the lignin material has a molecular weight in excess of 5,000 daltons. The binder is produced by reacting the high molecular weight sulfonated lignin material with 0.0125 to 0.5 parts, per part of lignin material, of acrylic acid, methyacrylic acid or acrylonitrile. A process for making the binder is also disclosed.

REFERENCES:
patent: 4001202 (1977-01-01), Dilling et al.
patent: 4105606 (1978-08-01), Forss et al.
patent: 4276077 (1981-06-01), Zaslavsky et al.
patent: 4332589 (1982-06-01), Lin
patent: 4374738 (1983-02-01), Kelley
"The Chemistry of Lignin", 1967, Pearl, pp. 250-258, Marcel Dekker, Inc. N.Y.C.
"Chemical Heterogeneity of Technical Lignins-Its Significance in Lignin Utilization", 1981, Lin and Detroit.
"Estimation of Polymolecularity in Lignin Sulfonate Polymers from Diffusion Measurements", 1959, Moacanin et al, pp. 2054-2060.
"Study on the Graft Copolymerization of Lignosulfonate and Acrylic Monomers" by Chen et al, published in Journal of Applied Polymer Science, vol. 25, pp. 2211-2220 (1980).

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