A water-soluble and/or water-swellable hybrid polymer comprising:
(i) from 5 wt.-% to 95 wt.-% water-soluble and/or water-swellable polysaccharide polymer;
(ii) from 5 wt.-% to 95 wt.-% synthetic polymer comprising:
(a) from 90 mol-% to 99.9 mol-%, preferably 95 mol-% to 99.5 mol-% of repeating units according to Formula (1)
(b) from 0.01 mol-% to 10 mol-%, preferably to 5 mol-%, more preferably to 3 mol-% of crosslinking or branching units, wherein the crosslinking or branching units result from the incorporation of a monomer comprising at least two olefinically unsaturated double bonds;
wherein components (i) and (ii) are polymerized by radical precipitation polymerization in a polar solvent.
一种
水溶性和/或
水溶性杂化聚合物,包括
(i) 5%至 95%的
水溶性和/或
水溶性
多糖聚合物;
(ii) 5%至 95%的合成聚合物,包括
(a) 90 摩尔-%至 99.9 摩尔-%,最好是 95 摩尔-%至 99.5 摩尔-%的符合式 (1) 的重复单元
(b) 0.01 摩尔-%至 10 摩尔-%,优选 5 摩尔-%,更优选 3 摩尔-%的交联或支化单元, 其中交联或支化单元由包含至少两个烯烃不饱和双键的单体形成;
其中组分(i)和(ii)在极性溶剂中通过自由基沉淀聚合反应聚合。