| 摘要 |
<p>Substituted and functionalized hydrophilic homo- and copolymers containing crosslinkable, unsaturated groups based on 2-substituted 2-oxazolines derived from a polyethyleneimine base skeleton. Substituted and functionalized hydrophilic homo- and copolymers containing crosslinkable, unsaturated groups based on 2-substituted 2-oxazolines derived from a polyethyleneimine base skeleton. The homo- or copolymers consist of or contain the units A and/or B below: [Image] R : alkyl, especially lower alkyl or a hydrophilic group; R 1' : radically crosslinkable ethylenically unsaturated group or a group containing a radically crosslinkable ethylenically unsaturated group Y : bond or a group of formula -CO-(CH 2) p-O-, which is bonded to the C-end at the N atom; and p : 2-7. Independent claims are also included for: (1) a process for preparation of homopolymers of formula (c5), by reaction of a polyethyleneimine of formula (c6) with a compound of formula R 1-CO-X, in the presence of an acid receptor; (2) an aqueous liquid absorbing article, especially a flat article, having a substrate carrying one or more polymers; and (3) a process for preparation of the absorbing article by the steps: (a) application of a solution of one or more optionally crosslinked polymers and a radical initiator to a substrate, especially for a suction layer (5); (b) evaporation of the solvent; (c) crosslinking of the polymer or substrate by thermal and/or photochemical crosslinking, especially by UV radiation; and (d) optionally post-reaction to complete the crosslinking. [Image] n' : mean degree of polymerization, preferably 5-500; and x : halogen, especially Cl.</p> |
