Polyurethane block copolymer based on poly siloxane tenside for membranes
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United States of America Patent
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Sep 22, 2015
Grant Date -
Jan 3, 2013
app pub date -
Mar 1, 2011
filing date -
Mar 9, 2010
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Abstract
Oligo- or polyurethane compounds of the formula (I) wherein k and n independently are numbers from 1 to 100, m is from the range 1-100, (X) is a block of formula (II) and (Y) is a block of the formula (III), (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.
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