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    • 1. 发明授权
    • Cycloaliphatic diisocyanate based rim elastomers
    • 环脂族二异氰酸酯基边缘弹性体
    • US5710230A
    • 1998-01-20
    • US657494
    • 1996-06-04
    • David D. SteppanNeil H. NodelmanEduard MayerA. Donald MeltzerAlbert Magnotta
    • David D. SteppanNeil H. NodelmanEduard MayerA. Donald MeltzerAlbert Magnotta
    • C08G18/65C08G18/66C08G18/75
    • C08G18/75C08G18/6505C08G18/6681C08G2120/00
    • This invention relates to a process for the production of polyurethane/urea moldings from a reaction injection molding process by processing the reaction mixture consisting of a diisocyanate and an isocyanate-reactive component via the one-shot process at an isocyanate index of about 80 to 130. The diisocyanate is an unmodified cycloaliphatic diisocyanate. The isocyanate-reactive component consists of 1) at least one polyol having functional groups which are hydroxyl groups, amine groups, or mixtures of hydroxyl groups and amine groups such that the equivalent ratio of hydroxyl groups to amine groups is from 0:1 to 1:1, and 2) at least one chain extender which is selected from diols, triols, primary aliphatic amines, secondary aliphatic amines, aminoalcohols and mixtures thereof. The equivalent ratio of hydroxyl groups to amine groups in the chain extender component is from 1:2 to 10:1. A catalyst capable of catalyzing the reaction between isocyanate groups and isocyanate-reactive groups is also present in the reaction mixture.
    • 本发明涉及一种通过反应注射成型工艺生产聚氨酯/尿素模塑制品的方法,该方法是通过一步法将异氰酸酯和异氰酸酯反应性组分组成的反应混合物以约80-130的异氰酸酯指数 二异氰酸酯是未改性的脂环族二异氰酸酯。 异氰酸酯反应性组分由1)至少一种具有羟基,胺基或羟基和胺基混合物的官能团的多元醇组成,使得羟基与胺基的当量比为0:1至1 :1和2)至少一种选自二醇,三醇,伯脂肪族胺,仲脂族胺,氨基醇及其混合物的扩链剂。 扩链剂组分中羟基与胺基的当量比为1:2至10:1。 能够催化异氰酸酯基和异氰酸酯反应性基团之间的反应的催化剂也存在于反应混合物中。
    • 7. 发明授权
    • Polyurethane resin transfer molding systems
    • 聚氨酯树脂传递模塑系统
    • US5973099A
    • 1999-10-26
    • US25621
    • 1998-02-18
    • Neil H. NodelmanDavid D. SteppanSanjeev Madan
    • Neil H. NodelmanDavid D. SteppanSanjeev Madan
    • C08G18/08C08G18/40C08G18/42C08G18/16
    • C08G18/4288C08G18/088C08G18/4018
    • This invention relates to a process for preparing optionally reinforced rigid polyurethanes by the reaction, under resin transfer molding conditions at an isocyanate index of 90 to 130, of(a) an organic polyisocyanate, with(b) 15 to 80 percent by weight, based on the total of components (b), (c), and (d), of certain polyester polyols having long-chain fatty acid or fatty alcohol groups, a number average molecular weight of 500 to 3000, and a metal ion content below 100 ppm; and(c) 20 to 85 percent by weight, based on the total of components (b), (c), (d) and (e), of one or more crosslinkers, other than component (b), containing 3 to 8 hydroxyl groups and having a molecular weight of 92 to 1000 and a metal ion content below 100 ppm,(d) 0 to 60 percent by weight, based on the total of components (b), (c), and (d), of an isocyanate-reactive compound, other than a polyester polyol of component (b), having a metal ion content below 100 ppm, selected from (i) an isocyanate-reactive polyol containing 3 to 6 hydroxyl groups and having a number average molecular weight of more than 1000 to 10,000, (ii) an isocyanate-reactive diol having a number average molecular weight of 62 to 10,000, and (iii) mixtures thereof, and(e) 0.05 to 3 parts by weight, based on the total amount of components (b), (c), (d) and (e), of a delayed action catalyst.
    • 本发明涉及在(a)有机多异氰酸酯的(a)有机多异氰酸酯的异氰酸酯指数为90〜130的树脂转移成型条件下,通过反应制备任选加强的刚性聚氨酯的方法,(b)15〜80重量% 对于具有长链脂肪酸或脂肪醇基团的某些聚酯多元醇的组分(b),(c)和(d)的总和,数均分子量为500至3000,金属离子含量低于100 ppm; 和(c)基于组分(b),(c),(d)和(e))的一种或多种除组分(b)以外的含有3至8个的组分(b)的交联剂的总量为20至85重量% 基于组分(b),(c)和(d)的总和,分子量为92〜1000,金属离子含量低于100ppm,(d)0〜60重量% 异氰酸酯反应性化合物,除了组分(b)的聚酯多元醇,其金属离子含量低于100ppm,选自(i)含有3至6个羟基并且具有数均分子量的异氰酸酯反应性多元醇 超过1000至10,000,(ii)数均分子量为62至10,000的异氰酸酯反应性二醇,和(iii)其混合物,和(e)基于组分总量的0.05-3重量份 (b),(c),(d)和(e))。