NEW TYPE HYDROGEN-BASED ALPHATIC NCO PRE-POLYMERS

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专利权人:

BAYER MATERIALSCIENCE AG

发明人:

BURKHARD KOEHLER,MICHAEL MAGER,STEFANIE EIDEN,JOHAN KIJLSTRA

申请号：

BRPI0718020

公开号：

BRPI0718020A2

申请日:

2007.10.13

申请国别(地区):

BR

年份:

2013

代理人:

摘要：

Preparation of polyurethane hydrogels (I) involves reacting (a) nonionic, hydrophilized, aliphatic and/or cycloaliphatic polyisocyanate prepolymers, containing less than 1 wt. % monomeric diisocyanates, (b) compounds containing at least one tert. amino group and at least three hydroxy groups, (c) water and (d) optionally antimicrobially active metal salts and/or metal particles. An independent claim is included for the polyurethane hydrogels (I) obtained by the process.

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