This invention provides a process for the production of molded particles for enzyme- or microbial cell-immobilization which is characterized in that:
an aqueous liquid composition which comprises:
(A) an unsaturated group-containing urethane resin which is obtained by making a compound (a) having one hydroxyl group and one epoxy group in a molecule react with a compound (b) having one carboxyl group and one ethylenically unsaturated group in a molecule, and further making thus obtained unsaturated group-containing diol (c) react with polyisocyanate compound (d);
(B) a polymerization initiator; and
(C) water-soluble macromolecular polysaccharides which are capable of gelation by contact with metal ion;
is gelatinized, in an aqueous medium which contains metal ion, to be particulate gel, which is then subjected to photopolymerization and/or thermopolymerization by which to cause the crosslinking reaction of ethylenically unsaturated group in said particulate gel.
本发明提供了一种用于酶或微
生物细胞固定的模塑颗粒的生产工艺,其特征在于
一种
水性液体组合物,它包括
(A) 一种含不饱和基团的聚
氨酯
树脂,它是通过使分子中含有一个羟基和一个环氧基团的化合物(a)与分子中含有一个羧基和一个
乙烯基不饱和基团的化合物(b)反应,并进一步使由此得到的含不饱和基团的二元醇(c)与多
异氰酸酯化合物(d)反应而得到的;
(B) 聚合
引发剂;以及
(C) 能与
金属离子接触而凝胶化的
水溶性大分子
多糖;
在含有
金属离子的
水介质中凝胶化,成为微粒凝胶,然后进行光聚合和/或热聚合,使所述微粒凝胶中的
乙烯不饱和基团发生交联反应。