Polyurethane
    2.
    发明授权
    Polyurethane 失效
    聚氨酯

    公开(公告)号:US4447591A

    公开(公告)日:1984-05-08

    申请号:US351578

    申请日:1982-02-23

    CPC分类号: C08G63/08 C08G18/4277

    摘要: A polyurethane comprises (a) organic diisocyanate units and (b) polycaprolactone polyol units having a narrow molecular weight distribution in which a ratio of the weight average molecular weight to the number average molecular weight is in the range of from 1.1 to 2.0 and the average molecular weight is 500 to 5,000, the units (a) and (b) being connected linearly through urethane linkages.

    摘要翻译: 聚氨酯包括(a)有机二异氰酸酯单元和(b)具有窄分子量分布的聚己内酯多元醇单元,其中重均分子量与数均分子量之比在1.1-2.0的范围内,平均 分子量为500至5,000,单元(a)和(b)通过氨基甲酸酯键线性连接。

    Polyurethane having excellent elastic recovery and elastic filament of
the same
    3.
    发明授权
    Polyurethane having excellent elastic recovery and elastic filament of the same 失效
    聚氨酯具有优异的弹性恢复性和弹性丝

    公开(公告)号:US4439599A

    公开(公告)日:1984-03-27

    申请号:US426453

    申请日:1982-09-29

    IPC分类号: C08G18/42

    CPC分类号: C08G18/4286 Y10S528/906

    摘要: A polyurethane having excellent elastic recovery is obtained by reacting an organic diisocyanate with a polycaprolactone polyester-diol prepared from a dihydric alcohol, a dibasic acid, an ester thereof or an anhydride thereof and .epsilon.-caprolactone or/and hydroxycaproic acid and having a hydroxyl value of 35 to 150 KOH mg/g and a content of .epsilon.-caprolactone and hydroxycaproic acid of 69 to 95% by weight.

    摘要翻译: 通过使有机二异氰酸酯与由二元醇,二元酸,其酯或其酸酐制备的聚己酸内酯聚酯二醇和ε-己内酯或/和羟基己酸并具有羟基价值的反应得到具有优异弹性回收率的聚氨酯 为35〜150KOHmg / g,ε-己内酯和羟基己酸的含量为69〜95重量%。

    Method for producing a metallic sintered body
    7.
    发明授权
    Method for producing a metallic sintered body 失效
    金属烧结体的制造方法

    公开(公告)号:US5032354A

    公开(公告)日:1991-07-16

    申请号:US573767

    申请日:1990-08-28

    IPC分类号: B22F3/02 B22F1/00 C08K3/08

    CPC分类号: B22F1/0059 C08K3/08

    摘要: A composition for producing a metallic sintered body consisting essentially of a mixture of a powdered metal having an average particle size of not more than 50 microns with a lactone resin having a relative viscosity value in the range of from 1.15 to 3.20 is disclosed.The composition has excellent properties such as mechanical strength of a green body thereof, and only a short time being necessary for removal or elimination of binder in comparison with conventional sintering compositions.Furthermore, the binder in the present composition is substantially composed of a single component; accordingly, manufacturing process control can be simplified by use of the lactone resin.Furthermore, a method for producing a metallic sintered body using such composition is also disclosed.

    Polyester diol and derived polyurethane and acrylic copolymer
    8.
    发明授权
    Polyester diol and derived polyurethane and acrylic copolymer 失效
    聚酯二醇和衍生的聚氨酯和丙烯酸共聚物

    公开(公告)号:US06500911B1

    公开(公告)日:2002-12-31

    申请号:US09744345

    申请日:2001-03-08

    IPC分类号: C08G1842

    摘要: The invention provides polyester dials suitable for preparation of polyurethanes, and provides polyurethanes derived therefrom. The invention also provides spandex filaments prepared from these polyurethanes, which exhibit improved elasticity, tensile strength, and resistance to hydrolysis. The present invention also provides dialkyl amino group-containing polyol additives having a high solubility in dimethylacetamide solvent, which when incorporated into a polyurethane protect the polyurethane and derived spandex filaments from deterioration or discoloration, and confer an improved modulus of elasticity. The polyurethanes and spandex filaments of the invention provide fabrics having a soft feeling, excellent hydrolysis resistance, wrinkle resistance, and adhesive properties, and which are particularly suitable for preparation of an artificial leather.

    摘要翻译: 本发明提供适用于制备聚氨酯的聚酯表盘,并提供由其衍生的聚氨酯。 本发明还提供由这些聚氨酯制备的氨纶长丝,其具有改善的弹性,拉伸强度和耐水解性。 本发明还提供了在二甲基乙酰胺溶剂中具有高溶解度的含二烷基氨基的多元醇添加剂,当其加入到聚氨酯中时,保护聚氨酯和衍生的氨纶丝变质或变色,并赋予改善的弹性模量。 本发明的聚氨酯和氨纶纤维提供具有柔软感,优异的耐水解性,抗皱性和粘合性的织物,特别适用于人造皮革的制备。

    Composition and method for producing a metallic sintered body
    9.
    发明授权
    Composition and method for producing a metallic sintered body 失效
    用于制造金属烧结体的组合物和方法

    公开(公告)号:US4968739A

    公开(公告)日:1990-11-06

    申请号:US442756

    申请日:1989-11-29

    IPC分类号: B22F3/02 B22F1/00 C08K3/08

    CPC分类号: B22F1/0059 C08K3/08

    摘要: A composition for producing a metallic sintered body consisting essentially of a mixture of a powered metal having an average particle size of not more than 50 microns with a lactone resin having a relative viscosity value in the range of from 1.15 to 3.20 is disclosed.The composition has excellent properties such as mechanical strength of a green body thereof, and only a short time being necessary for removal or elimination of binder in comparison with conventional sintering compositions.Furthermore, the binder in the present composition is substantially composed of a single component; accordingly, manufacturing process control can be simplified by use of the lactone resin.Furthermore, a method for producing a metallic sintered body using such composition is also disclosed.