Solution of a polyurethane in a polyol and a process for using such a
solution in the production of polyurethane plastics
    3.
    发明授权
    Solution of a polyurethane in a polyol and a process for using such a solution in the production of polyurethane plastics 失效
    聚氨酯在多元醇中的溶液以及在制备聚氨酯塑料中使用这种溶液的方法

    公开(公告)号:US4371630A

    公开(公告)日:1983-02-01

    申请号:US236949

    申请日:1981-02-23

    摘要: A solution of a polyurethane in a polyol is made from (a) the reaction product of a polyisocyanate and a diprimary diol, and (b) a polyether in which the reaction product constitutes from 3 to 60 wt. % of the solution. Suitable diprimary diols have a molecular weight of from 90 to 800 and a structure at both hydroxyl groups corresponding to the general formula: ##STR1## in which R.sub.1 represents chlorine, an alkyl, cycloalkyl, aralkyl or aryl radical having from 1 to 10 carbon atoms, which carbon atoms may be substituted or interrupted by chlorine, ester groups, ether groups, amide groups, urethane groups or nitrile groups, andR.sub.2 represents hydrogen or a radical within the definition of R.sub.1.Polyethers which may be employed have at least two hydroxyl groups (at least 80% of which are secondary hydroxyl groups) and an average molecular weight of from 500 to 12,000. The disclosed solutions are particularly useful in the production of flexible polyurethane plastics which are suitable for flamecoating and high frequency bonding.

    摘要翻译: 聚氨酯在多元醇中的溶液由(a)多异氰酸酯与二元二元醇的反应产物和(b)反应产物构成3〜60重量%的聚醚制成。 %的解决方案。 合适的二原子二醇的分子量为90至800,并且在两个羟基上的结构对应于以下通式:其中R 1表示氯,具有1至10个碳原子的烷基,环烷基,芳烷基或芳基 ,哪些碳原子可以被氯,酯基,醚基,酰胺基,氨基甲酸酯基或腈基取代或中断,并且R 2表示氢或R 1定义中的基团。 可以使用的聚醚具有至少两个羟基(其中至少80%是仲羟基),平均分子量为500至12,000。 所公开的解决方案在生产柔性聚氨酯塑料时特别有用,这些塑料适合于熔融和高频粘合。

    Polyurethane-based thickeners for aqueous compositions
    4.
    发明授权
    Polyurethane-based thickeners for aqueous compositions 失效
    用于水性组合物的聚氨酯类增稠剂

    公开(公告)号:US5612408A

    公开(公告)日:1997-03-18

    申请号:US593036

    申请日:1996-01-29

    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。

    Use of isocyanates containing urethane groups as drying agents and a
process for the production of a coating composition
    5.
    发明授权
    Use of isocyanates containing urethane groups as drying agents and a process for the production of a coating composition 失效
    含有脲基团的异氰酸酯作为干燥剂的使用和涂料组合物的制备方法

    公开(公告)号:US5179187A

    公开(公告)日:1993-01-12

    申请号:US655019

    申请日:1991-02-14

    摘要: The present invention relates to a process for the preparation of a coating composition bya) treating moisture-containing auxiliaries and additives at 60.degree. to 120.degree. C. with urethane group-containing isocyanates having (cyclo)aliphatically bound isocyanate groups, an (average) NCO functionality of 0.8 to less than 2.0 and an NCO content of 5 to 17% by weight andb) after completion of the isocyanate/water reaction, combining the mixture obtained in step a) with iscyanate prepolymers having (cyclo)aliphatically bound isocyanate groups.The present invention also relates to the coating composition obtained by this process and to a composition containing urethane group-containing isocyanates having (cyclo)aliphatically bound isocyanate groups, an (average) NCO functionality of 0.8 to less than 2.0 and an NCO content of 5 to 17% by weight and moisture-containing auxiliaries or additives.

    摘要翻译: 本发明涉及一种通过以下方法制备涂料组合物的方法:a)在含有(环)脂族结合的异氰酸酯基团的氨基甲酸酯基的异氰酸酯基团上,在60〜120℃下处理含水助剂和添加剂, )NCO官能度为0.8至小于2.0,NCO含量为5至17重量%,b)异氰酸酯/水反应完成后,将步骤a)中获得的混合物与具有(环)脂族结合异氰酸酯的异氰酸酯预聚物 团体 本发明还涉及通过该方法获得的涂料组合物和含有具有(环)脂族结合的异氰酸酯基团,(平均)NCO官能度为0.8至小于2.0,NCO含量为5的含氨基甲酸酯基异氰酸酯的组合物 至17重量%,含水分的助剂或添加剂。