公开(公告)号：US5612408A

公开(公告)日：1997-03-18

申请号：US593036

申请日：1996-01-29

申请人： Klaus Konig ,  Jurgen Schwindt ,  Jan Mazanek ,  Josef Pedain ,  Manfred Dietrich ,  Gerhard Klein ,  Karl-Roland Jerg

发明人： Klaus Konig ,  Jurgen Schwindt ,  Jan Mazanek ,  Josef Pedain ,  Manfred Dietrich ,  Gerhard Klein ,  Karl-Roland Jerg

IPC分类号： C09K3/00 ,  C08G18/28 ,  C08G18/48 ,  C08G65/28 ,  C08L75/00 ,  C08L75/08 ,  C09D7/00 ,  C09D175/00 ,  C09D175/04 ,  C08G18/12 ,  C08G18/42

CPC分类号： C08G18/4833 ,  C08G18/283 ,  C09D7/002 ,  C08L75/04

摘要： The present invention relates to a process for the preparation of polyurethanes suitable for use as thickeners for aqueous compositions by reacting at an NCO/OH equivalent ratio of 0.9:1 to 1.2:1a) a polyether component having an OH number of 10 to 30 mg KOH/g and obtained by the alkoxylation of a mixture ofa1) 30 to 80 mole % of a monofunctional alcohol or alkylphenol having 8 to 30 carbon atoms,a2) 2 to 10 mole % of sodium hydroxide or potassium hydroxide,a3) 10 to 60 mole % of water anda4) 0 to 10 mole % of a trihydric to hexahydric alcohol having a molecular weight of 92 to 600, with ethylene oxide or a mixture of ethylene oxide with up to 20 mole %, based on the total moles of alkylene oxides, of propylene oxide, in which the percentages of a1) to a4) add up to 100,withb) a polyisocyanate component containing at least one organic diisocyanate, optionally in admixture with up to 20 mole %, based on the total moles of component b), of higher than difunctional polyisocyanates.The invention also relates to the polyurethanes obtainable by this method and their use, optionally in combination with other thickeners, for the thickening of aqueous systems.

摘要翻译： 本发明涉及一种制备适合用作水性组合物增稠剂的聚氨酯的方法，其通过以0.9:1至1.2:1的NCO / OH当量比反应a）OH数为10至30的聚醚组分 mg KOH / g，通过a1）30〜80摩尔％的单官能醇或碳原子数为8〜30的烷基酚的混合物的烷氧基化得到，a2）2〜10摩尔％的氢氧化钠或氢氧化钾，a3）10 至60摩尔％的水和a4）0至10摩尔％的分子量为92至600的三元至六元醇与环氧乙烷或环氧乙烷的混合物至多20摩尔％，基于总摩尔数 的环氧丙烷，其中a1）至a4）的百分比加到100，其中b）含有至少一种有机二异氰酸酯的多异氰酸酯组分，任选地与至多20摩尔％的混合物，基于总计 组分b）的摩尔数高于双官能多异氰酸酯。 本发明还涉及通过该方法获得的聚氨酯，以及它们用于任选与其它增稠剂组合的用于增稠水性体系的用途。