C - Chemistry – Metallurgy – 08 – B
Patent
C - Chemistry, Metallurgy
08
B
260/213
C08B 15/06 (2006.01) C08F 251/02 (2006.01) C08F 299/02 (2006.01)
Patent
CA 1234566
ABSTRACT The invention provides an improved cellulosic ester or ether product with a degree of ester or ether substitution of between 2 . 0 and about 2 . 9 which is derivatized or further reacted by reaction with an acryl- amide reactant to provide pendant acrylamide functional- ity or substituents at a degree of substitution (D.S.) of at least about 0.05 (preferably from about 0.05 to about 0.5) and to thereby provide a polymerizable organic sol- vent-soluble product which is insoluble in water and copolymerizable with vinyl monomers. The product is conveniently prepared by reacting said cellulose ether or ester 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 be- tween 80°C. and 120°C. for from one-half to three hours, while removing the water of reaction. The resulting acrylamide functionality-containing cellulose ester or ether product typically contains unreacted, residual hydroxyl groups in an amount corresponding to a hydroxyl D.S. of from about 0.05 to about 0.95.
466977
Osler Hoskin & Harcourt Llp
Staley (a.e.) Manufacturing Company
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