| 摘要 |
Graft polymers or copolymers of the structural type are described in which (Ba) and (Bb) denote the same or different predominantly unpolar base polymer chains, optionally with free valences to form a crosslinked structure; ZX, Zy and ZZ denote the same or different central units, optionally with free valences to form a crosslinked structure; (S1),(S2),(S3) and (S4) denote the same or different polar or nonpolar side chains; m =1-10 and n is a whole number from 0 to 5000 and the structure is saturated by polar terminal groups, characterized by the fact that the central unit ZX Zy and ZZ represents an aminoplastic central unit based on a melamine-formaldehyde or urea-formaldehyde resin. |
