| 摘要 |
<p>Fibre or film of water-absorbent water-insoluble fibrous material has a matrix of a cross-linked copolymer formed from 50 to 95 % by weight of ethylenically unsaturated carboxylic monomer and 5 to 50 % by weight of copolymerisable ethylenically unsaturated monomer. The matrix contains regions of a dispersed polymeric material, the matrix copolymer and the dispersed polymeric material being mutually immiscible and chemically substantially non-reactive under ambient conditions. The fibre or film can be produced by extruding a solution or dispersion of the polymeric material in a solution of the matrix copolymer in its non-cross-linked state into a gaseous environment.</p> |
