Process for production of polyurethane
    1.
    发明授权
    Process for production of polyurethane 失效
    聚氨酯生产工艺

    公开(公告)号:US4551518A

    公开(公告)日:1985-11-05

    申请号:US632921

    申请日:1984-07-20

    IPC分类号: C08G18/42 C08G18/08

    CPC分类号: C08G18/4275

    摘要: A novel process for production of polyurethane having excellent hydrolysis resistance, heat resistance, low-temperature characteristics and no tendency of crystallization and capability of making high solid content solution, which is obtained from a polymerized polyol having two or more hydroxy groups in the molecule and a polyisocyanate, and optionally a chain extender, characterized in that the polymerized polyol component is a polymerized polyol having ##STR1## groups in the molecule.

    摘要翻译: 分子中具有两个以上羟基的聚合多元醇得到的具有优异的耐水解性,耐热性,低温特性,结晶倾向性和高固含量溶液制造能力的新型聚氨酯的制造方法,以及 多异氰酸酯和任选的扩链剂,其特征在于聚合的多元醇组分是分子中具有基团的聚合多元醇。

    Method of producing 1,9-nonanedial and 9-hydroxy-7-nonen-1-al
    4.
    发明授权
    Method of producing 1,9-nonanedial and 9-hydroxy-7-nonen-1-al 失效
    制备1,9-壬二醛和9-羟基-7-壬烯-1-醛的方法

    公开(公告)号:US4420640A

    公开(公告)日:1983-12-13

    申请号:US372337

    申请日:1982-04-27

    CPC分类号: C07C47/263 C07C45/49

    摘要: There is disclosed a method of producing 1,9-nonanedial and/or 9-hydroxy-7-nonen-1-al which comprises reacting 2,7-octadien-1-ol with a mixture of hydrogen and carbon monoxide in an organic solvent in the presence of a rhodium catalyst and 30-300 equivalents of a monodentate tertiary organic phosphorus compound in per gram atom of rhodium at a hydrogen partial pressure of 0.5-20 kg/cm.sup.2 (absolute) and a carbon monoxide partial pressure of 0.1-5.0 kg/cm.sup.2 (absolute).

    摘要翻译: 公开了一种生产1,9-壬二醛和/或9-羟基-7-壬烯-1-醛的方法,其包括使2,7-辛二烯-1-醇与氢和一氧化碳在有机溶剂中的混合物 在铑催化剂存在下,在氢分压为0.5-20kg / cm 2(绝对)和一氧化碳分压为0.1-5.0的每克原子铑中的30-300当量的单齿叔有机磷化合物 kg / cm2(绝对)。

    Polyurethane and molded article comprising the same
    6.
    发明授权
    Polyurethane and molded article comprising the same 失效
    聚氨酯和包含其的模制品

    公开(公告)号:US5606005A

    公开(公告)日:1997-02-25

    申请号:US558779

    申请日:1995-11-16

    摘要: A polyurethane made of polyester diol units, organic diisocyanate units and units from a chain extender, wherein the polyester diol units contain dicarboxylic acid units and diol units, wherein at least 30 mole % of the dicarboxylic acid units are units derived from 3,8-dimethyldecanedioic acid, 3,7-dimethyldecanedioic acid or a mixture thereof, and wherein the polyester diol units have a number-average molecular weight in a range from 500 to 6000 is provided along with the polyester diol for preparing the polyurethane, polyurethane fibers prepared from the polyurethane, a molded article prepared from the polyurethane and processes for producing the polyurethane, polyester diol, dimethyldecanedioic acids and dimethyldecanedials used to prepare the dimethyldecanedioic acids; where the polyurethane and fibers produced therefrom are superior in various properties such as hydrolytic resistance, heat resistance, resistance to hot water, cold resistance, fungal resistance and mechanical performances e.g., strength at break and elongation at break, as well as injection moldability and the fibers are dyeable under high-temperature and high-pressure conditions and are superior, after dyeing, in tensile strength and elongation, elastic recovery, fungal resistance, resistance to chlorine and color fastness.

    摘要翻译: 由聚酯二醇单元制成的聚氨酯,有机二异氰酸酯单元和扩链剂的单元,其中聚酯二醇单元含有二羧酸单元和二醇单元,其中至少30摩尔%的二羧酸单元是衍生自3,8- 二甲基癸二酸,3,7-二甲基癸二酸或其混合物,其中聚酯二醇单元的数均分子量在500-6000的范围内与聚酯二醇一起提供,用于制备聚氨酯,聚氨酯纤维由 聚氨酯,由聚氨酯制备的模制品和用于制备二甲基癸二酸的聚氨酯,聚酯二醇,二甲基癸二酸和二甲基癸二醛的方法; 其中由其生产的聚氨酯和纤维在各种性能如耐水解性,耐热性,耐热水性,耐寒性,耐真菌性和机械性能方面具有优越性,例如断裂强度和断裂伸长率,以及注射成型性和 纤维在高温和高压条件下可染色,染色后,拉伸强度和伸长率,弹性恢复,真菌耐性,耐氯性和色牢度优异。

    Method of producing L-phenylalanine
    9.
    发明授权
    Method of producing L-phenylalanine 失效
    生产L-苯丙氨酸的方法

    公开(公告)号:US4743547A

    公开(公告)日:1988-05-10

    申请号:US849859

    申请日:1986-04-09

    IPC分类号: C12P13/22 C12P41/00

    CPC分类号: C12P41/00 C12P13/222

    摘要: There is provided a method of producing L-phenylalanine in high optical purity which comprises treating an N-acylphenylalanine alkyl ester in L form, in the presence of water, with an enzyme capable of hydrolyzing the N-acylphenylalanine alkyl ester in L form to give L-phenylalanine.

    摘要翻译: 提供了一种以高光学纯度生产L-苯丙氨酸的方法,其包括在水存在下用能够水解L-形式的N-酰基苯丙氨酸烷基酯的酶处理L-形式的N-酰基苯丙氨酸烷基酯,得到 L-苯丙氨酸。