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    • 5. 发明授权
    • Method for producing compounds with terminal OH groups
    • 生产具有末端OH基团的化合物的方法
    • US06566563B1
    • 2003-05-20
    • US09720890
    • 2001-05-04
    • Alfred WestfechtelRoland GruetzmacherElke Grundt
    • Alfred WestfechtelRoland GruetzmacherElke Grundt
    • C07C3118
    • C08G64/0208C08G18/44C08G64/305
    • A process for making OH-terminated compounds involving: (a) combining at least one CH2OH-terminated diol and a titanium-containing catalyst to form a reaction mixture; (b) heating the reaction mixture to a temperature of from 110 to 160° C. to form a heated reaction mixture; (c) continuously adding dimethyl carbonate to the heated reaction mixture; (d) continuously distilling all methanol released from the heated reaction mixture; (e) heating the reaction mixture to a temperature of from 190 to 240° C. to form an OH-terminated product; (f) removing unreleased methanol and dimethyl carbonate from the reaction mixture under a pressure of less than 100 mbar; and (g) deactivating the titanium-containing catalyst by adding from 0.8 to 2 equivalents, based on the catalyst, of a 1 to 20% by weight aqueous solution of phosphoric acid to the reaction mixture, at a temperature of from 80 to 120° C.
    • 一种制备OH封端化合物的方法,包括:(a)将至少一种CH 2 OH封端的二醇和含钛催化剂混合以形成反应混合物; (b)将反应混合物加热至110至160℃的温度以形成加热的反应混合物; (c)向加热的反应混合物中连续加入碳酸二甲酯; (d)连续蒸馏从加热的反应混合物中释出的所有甲醇; (e)将反应混合物加热至190-240℃的温度以形成OH封端的产物; (f)在小于100毫巴的压力下从反应混合物中除去未发酵的甲醇和碳酸二甲酯; 和(g)通过向反应混合物中加入基于催化剂的0.8至2当量的1至20重量%的磷酸水溶液,在80至120℃的温度下使含钛催化剂失活 C。
    • 6. 发明授权
    • Polyurethane dispersions and their use as binders in stoving lacquers
    • 聚氨酯分散体及其作为粘合剂在烤漆中的应用
    • US5563206A
    • 1996-10-08
    • US433485
    • 1995-05-11
    • Ulrich EickenAlfred WestfechtelRainer HoeferRoland Gruetzmacher
    • Ulrich EickenAlfred WestfechtelRainer HoeferRoland Gruetzmacher
    • C08G18/00C08G18/08C08G18/10C08G18/12C08G18/32C08G18/65C08G18/66C09D175/00C09D175/04C08G18/62
    • C08G18/6607C08G18/0804C08G18/0823C08G18/12C08G18/3212
    • Aqueous polyurethane dispersions prepared in several stages by reactingA) aliphatic and/or aromatic di- and/or tri-isocyanates withB1) polyol mixtures containing dimer diols of 25 to 100% by weight of dimer diols and 0 to 75% by weight of other hydrophobic diols and/or polyols, the equivalent ratio of OH to NCO being 1:1.1 to 1:4, and simultaneously or subsequently withB2) chain-extending agents containing two terminal NCO-reactive groups, the chain-extending agents additionally containing either artionic or cationic groups or groups convertible into anionic or cationic groups by neutralization, the equivalent ratio of NCO-reactive groups to NCO groups theoretically still present after the reaction of A) with B1) being 1:0.9 to 1:4, and then optionally reactingC) the NCO groups theoretically still present in the polyurethanes after the reaction of A) with B1) and B2) with polyols containing at least three hydroxyl groups and/or amino alcohols containing at least two hydroxyl groups in an equivalent ratio of OH+amino groups to NCO of at least 3:1, and finally dispersing the polyurethanes obtained in water, the polyurethanes obtained being at least partly neutralized before or during dispersion where the chain extending agents B2) contain as additional groups those groups which are only converted into anionic or cationic groups by neutralization, are provided. Also provided is a process for the production of aqueous polyurethane dispersions and methods of using aqueous polyurethane dispersions so prepared as stoving lacquers.
    • PCT No.PCT / EP93 / 03045 Sec。 371日期1995年5月11日 102(e)日期1995年5月11日PCT 1993年11月2日PCT公布。 公开号WO94 / 11413 日期1994年5月26日通过使A)脂族和/或芳族二 - 和/或三异氰酸酯与B1二元醇混合物反应制备水性聚氨酯分散体,所述B1)多元醇混合物含有25至100重量%的二聚体二醇和0至75的二聚体二醇 重量%的其它疏水性二醇和/或多元醇,OH与NCO的当量比为1:1.1至1:4,同时或随后与含有两个末端NCO-反应性基团的B2)增链剂反应, 通过中和,另外含有芳香族或阳离子基团或基团可以转化为阴离子或阳离子基团的延伸剂,理论上仍然存在的NCO反应性基团与NCO反应基团的当量比在A)与B1)反应后为1:0.9至1: 4,然后任选地使C)在A)与B1)和B2反应后理论上仍然存在于聚氨酯中的NCO基团与含有至少三个羟基的多元醇和/或至少含有tw的氨基醇反应 o羟基以OH +氨基与NCO的当量比至少为3:1,最后分散在水中得到的聚氨酯,得到的聚氨酯在扩链剂B2所含的分散之前或期间至少部分中和 作为附加基团,提供了仅通过中和转化成阴离子或阳离子基团的那些基团。 还提供了制备水性聚氨酯分散体的方法和使用如烘烤漆制备的水性聚氨酯分散体的方法。