Anionic modified polyurethane dispersions
Aqueous polyurethane urea dispersions comprise a polyurethane urea polymer (I), which is derived from (a) at least one aromatic diisocyanate, (b) at least one polyether polyol having a number average molecular weight of 300-1500 Da, (c) at least one compound having one or two isocyanate groups and a...
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Main Authors | , , , , |
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Format | Patent |
Language | Chinese English |
Published |
14.08.2013
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Subjects | |
Online Access | Get full text |
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Summary: | Aqueous polyurethane urea dispersions comprise a polyurethane urea polymer (I), which is derived from (a) at least one aromatic diisocyanate, (b) at least one polyether polyol having a number average molecular weight of 300-1500 Da, (c) at least one compound having one or two isocyanate groups and at least one ionic group, (d) at least one polyol having a number average molecular weight of 60-499 Da and (e) water. The average total functionality of the isocyanate reactive compounds (b) to (d) amounts to 1.85-2.2. Aqueous polyurethane urea dispersions comprise a polyurethane urea polymer of formula (CH 3-O-C(=O)-NH-Ar 1>-NH-C(=O)-NH-Ar 1>-NH-C(=O)-O-CH 3) (I), which is derived from (a) at least one aromatic diisocyanate, (b) at least one polyether polyol having a number average molecular weight of 300-1500 Da, (c) at least one compound having one or two isocyanate groups and at least one ionic group, (d) at least one polyol having a number average molecular weight of 60-499 Da and (e) water. The average total |
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Bibliography: | Application Number: CN200980145347 |