申请人:Kuraray Co., Ltd.
公开号:US05606005A1
公开(公告)日:1997-02-25
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.
提供了一种聚酯二醇单元、有机二异氰酸酯单元和链延伸剂单元制成的聚氨酯,其中聚酯二醇单元包含二羧酸单元和二元醇单元,其中至少30摩尔%的二羧酸单元是由3,8-二甲基癸二酸、3,7-二甲基癸二酸或其混合物衍生的单元,并且聚酯二醇单元的数均分子量在500至6000的范围内。同时提供了用于制备聚氨酯的聚酯二醇、由聚氨酯制备的聚氨酯纤维、由聚氨酯制备的成型品以及用于生产聚氨酯、聚酯二醇、二甲基癸二酸和二甲基癸二醛的工艺;其中,由聚氨酯和制备自聚氨酯的纤维在各种性能方面优越,如耐水解性、耐热性、耐热水性、耐寒性、抗真菌性和机械性能(例如断裂强度和断裂伸长),以及注射成型性能,纤维在高温高压条件下可染色,并且在染色后具有优异的拉伸强度和伸长率、弹性恢复、抗真菌性、抗氯性和色牢度。