The invention provides an improved cellulosic ester or ether product with an ester or ether degree of substitution (D.S.) of between 2.0 and about 2.9 which is derivatized or further reacted by reaction with an acrylamide reagent to substitute to a pendent acrylamide functionality D.S. of from about 0.05 to about 0.5 (leaving an unreacted or unsubstituted hydroxyl D.S. of from about 0.05 to about 0.95), and to 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 ester or ether derivative with a catalyst and the acrylamide reagent at a pH of from about 4.2 to about 4.5. The reaction is carried out at a temperature between 80°C and 120°C for from one-half to three hours, while removing the water of reaction.
本发明提供了一种改进的
纤维素酯或醚产品,其酯或醚的取代度(D.S.)在 2.0 至 2.9 之间,通过与
丙烯酰胺试剂反应进行衍生化或进一步反应,以取代为悬垂的
丙烯酰胺官能团,D.S.在约 0.05 至约 0.5 之间(留下未反应或未取代的羟基,D.S.在约 0.05 至约 0.95 之间),从而提供聚合物。S.约为 0.05 至约 0.5(留下未反应或未取代的羟基 D.S.约为 0.05 至约 0.95),从而提供一种不溶于
水且可与
乙烯基单体共聚的可聚合有机溶剂溶性产品。该产品的制备方法是将
纤维素酯或醚衍
生物与催化剂和
丙烯酰胺试剂在 pH 值约为 4.2 至 4.5 的条件下进行反应。反应在 80°C 至 120°C 的温度下进行半小时至三小时,同时除去反应
水。