| 摘要 |
Oligo- or polyurethane compounds of the formula I (X (Y) (1) wherein k and n independently are numbers from 1 to 100, m is from the range 1-100, (X) is a block of formula O- CO- N-(A)-N -C O-O-(B) H H H H (II) and (Y) is a block of the formula O-CO-N-(A)-N-CO-O-(C) H H (Ill), (A) is a residue of an aliphatic or aromatic diisocyanate linker, (B) is a residue of a linear oligo- or polysiloxane containing alkanol end groups, and optionally further containing one or more aliphatic ether moieties, and (C) is an aromatic oligo- or polysulfone block, may advantageously be used as anti-adhesion additives in polymer compositions e.g. for membranes; related oligo- or polyurethanes wherein m is 0 are especially suitable for the preparation of antimicrobial water separation membranes. |
