Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carbohydrate or derivative as a reactant
Patent
1983-11-22
1984-12-25
Griffin, Ronald W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carbohydrate or derivative as a reactant
525 543, C08B 1506, C08B 1510
Patent
active
044905165
ABSTRACT:
The invention provides an improved cellulosic ester or ether product with a degree of substitution of between 2.0 and about 2.9 which is derivatized or further reacted by reaction with an acrylamide reactant to substitute to a D.S. of from about 0.05 to about 0.5 and provide a hydroxyl D.S. of from about 0.05 to about 0.5, and thereby provide a polymerizable organic solvent-soluble product which is insoluble in water and copolymerizable with vinyl monomers. The product is prepared by reacting a cellulose derivative with a catalyst and the acrylamide reactant at a pH of from between about 4.2 and about 4.5. The reaction is carried out at a temperature between 80.degree. C. and 120.degree. C. for from one-half to three hours, while removing the water of reaction.
REFERENCES:
patent: 2338681 (1944-01-01), Bock et al.
patent: 2824779 (1958-02-01), Reeves et al.
patent: 3649574 (1972-03-01), Cole
patent: 4358510 (1982-11-01), Ito et al.
A. E. Staley Manufacturing Company
Collins Forrest L.
Griffin Ronald W.
Guffey James B.
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