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    • 5. 发明申请
    • POLYURETHANE-UREA POLYMERS DERIVED FROM CYCLOHEXANE DIMETHANOL
    • 来自环己基二甲醇的聚氨酯 - 尿素聚合物
    • WO2007137116A2
    • 2007-11-29
    • PCT/US2007/069143
    • 2007-05-17
    • DOW GLOBAL TECHNOLOGIES INC.ARGYROPOULOS, John, N.BHATTACHARJEE, Debkumar
    • ARGYROPOULOS, John, N.BHATTACHARJEE, Debkumar
    • C08G18/246C08G18/0823C08G18/12C08G18/4238C08G18/6659C08G18/755C09D175/06C08G18/3228
    • Aqueous polyurethane dispersion are disclosed where the dispersions contain from 5 to 70 weight percent polyurethane solids wherein the solids are obtained from at least one isocyanate terminated prepolymer prepared by reacting (a) a polyol or polyol blend having a mean average equivalent weight of 200 to 2,000; and (b) at least one polyisocyanate where the prepolymer is dispersed in water; optionally in the presence of (c) one or more stabilizers; or (d) one or more amine chain extenders or both; wherein the prepolymers have an isocyanate (NCO) content of from 2 to 40 weight percent and the polyol or polyol blend (a) contains at least 15 weight percent of a polyester based on a polycarboxylic acid or lactone component and a glycol component, wherein the glycol component contains isomers of 1,3- and 1,4- cyclohexanedimethanol (1,3-/1,4-CHDM) where the ratio of the 1,3-/1,4-isomers is from 35:65 to 65:35.
    • 公开了一种水性聚氨酯分散体,其中分散体含有5至70重量%的聚氨酯固体,其中固体由至少一种异氰酸酯封端的预聚物获得,该预聚物通过使(a)平均当量为200-2,000的多元醇或多元醇共混物 ; 和(b)至少一种预聚物分散在水中的多异氰酸酯; (c)一种或多种稳定剂; 或(d)一种或多种胺增链剂或两者; 其中所述预聚物具有2-40重量%的异氰酸酯(NCO)含量,并且多元醇或多元醇共混物(a)含有至少15重量%的基于多元羧酸或内酯组分的聚酯和二醇组分,其中 乙二醇组分含有1,3-和1,4-环己烷二甲醇(1,3- / 1,4-CHDM)的异构体,其中1,3- / 1,4-异构体的比例为35:65至65: 35。