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    • 69. 发明授权
    • Process for the preparation of polymers containing hydroxyl groups and
their use for the production of polyurethanes
    • 制备含羟基聚合物的方法及其用于生产聚氨酯的方法
    • US4803246A
    • 1989-02-07
    • US849649
    • 1986-04-09
    • Manfred DietrichJosef PedainKlaus KonigPeter Hohlein
    • Manfred DietrichJosef PedainKlaus KonigPeter Hohlein
    • C08G18/00C08F8/00C08F8/14C08G18/62C08L75/00
    • C08F8/14C08G18/6258
    • The present invention is directed to a process for the preparation of polymers containing hydroxyl groups by reacting polymers based on acrylic acid and/or methacrylic acid and containing carboxyl groups with alkylene oxides in the presence of catalysts, characterized in that the catalysts used are(a) addition products containing two thioether groups of (i) mercaptoalkanols corresponding to the formula ##STR1## and (ii) doubly unsaturated terpene hydrocarbons and/or condensation products with a maximum molecular weight of 5000 obtained by the condensation of such addition products on their own or with other polyhydric alcohols having a molecular weight of 62 to about 200, and/or(b) relatively high molecular weight thioethers having a molecular weight of about 500 to 5000 obtainable by the condensation of thiodiglycols corresponding to the formula ##STR2## optionally in admixture with up to 50 hydroxyl equivalents percent, based on the total mixture, of other polyhydroxyl compounds having a molecular weight of 62 to about 200, in which formula, R and R' may be identical or different and denote hydrogen or a methyl group.The present invention is further directed to the use of the hydroxyl containing alkoxylation products obtained by this process as reactants for organic polyisocyanates (optionally blocked with blocking agents for isocyanate groups) in the production of polyurethane plastics, in particular high quality polyurethane coatings.
    • 本发明涉及一种通过在催化剂存在下,通过使基于丙烯酸和/或甲基丙烯酸的聚合物与烯化氧反应的聚合物制备含羟基的聚合物的方法,其特征在于所用的催化剂是(a )含有两个硫醚基团的加成产物(i)对应于式“IMAGE”的巯基链烷醇和(ii)通过自身缩合产生的双不饱和萜烯烃和/或最大分子量为5000的缩合产物 或分子量为62至约200的其它多元醇,和/或(b)分子量为约500至5000的相对较高分子量的硫醚,其可通过任选地在式 与其他多羟基化合物的混合物混合至多50个羟基当量百分比 分子量为62至约200,其中R和R'可以相同或不同,表示氢或甲基。 本发明还涉及通过该方法获得的含羟基烷氧基化产物作为有机多异氰酸酯的反应物(任选地用异氰酸酯基团的封闭剂封端)用于生产聚氨酯塑料,特别是高质量聚氨酯涂料中的用途。