Elastic fibers and articles made therefrom, including crystalline and crystallizable polymers of propylene
    1.
    发明授权
    Elastic fibers and articles made therefrom, including crystalline and crystallizable polymers of propylene 有权
    由其制成的弹性纤维和制品,包括丙烯的结晶和可结晶的聚合物

    公开(公告)号:US06342565B1

    公开(公告)日:2002-01-29

    申请号:US09570584

    申请日:2000-05-12

    IPC分类号: D01F646

    摘要: Improved thermoplastic polymer soft elastic fiber blend compositions including a crystalline isotactic polypropylene component and a crystallizable alpha-olefin and propylene copolymer component, the copolymer comprising crystallizable alpha-olefin sequences. In a preferred embodiment, improved thermoplastic polymer blends are provided prepared from 0% to 95%, preferably 2% to 40% of the crystalline isotactic polypropylene and from 5% to 100%, preferably 60% to 98% of a crystallizable ethylene and propylene copolymer, wherein said copolymer comprises isotactically crystallizable propylene sequences and is predominately propylene. The resultant blends manifest unexpected compatibility characteristics, increased tensile strength, and, improved resistance to elastic deformation.

    摘要翻译: 包括结晶全同立构聚丙烯组分和可结晶的α-烯烃和丙烯共聚物组分的改进的热塑性聚合物软弹性纤维混合组合物,该共聚物包含可结晶的α-烯烃序列。 在优选的实施方案中,提供了改进的热塑性聚合物共混物,其由0%至95%,优选2%至40%的结晶全同立构聚丙烯和5%至100%,优选60%至98%的可结晶乙烯和丙烯 共聚物,其中所述共聚物包含等度可结晶的丙烯序列,主要是丙烯。 所得到的混合物表现出意想不到的相容性,增加拉伸强度,改善弹性变形性。

    Star-branched polymer with dendrimer core
    8.
    发明授权
    Star-branched polymer with dendrimer core 失效
    具枝状聚合物核的星形支化聚合物

    公开(公告)号:US06228978B1

    公开(公告)日:2001-05-08

    申请号:US09100271

    申请日:1998-06-19

    IPC分类号: C08G7300

    摘要: Polyisobutylene (PIB) functionalized with terminal reactive unsaturation is disclosed. Carbocationically polymerized monohalogen-terminated PIB is dehydrohalogenated in a hydrocarbon solvent using an alkoxide of the formula RO-M wherein R is alkyl of at least 5 carbon atoms and M is alkali metal. The PIB obtained has terminal unsaturation which is 100% in the reactive ‘exo’ form which can be converted to succinic anhydride groups (PIB-SA) by the ene reaction with maleic anhydride. The PIB-SA is reactive with amine functional dendrimers to obtain a star-branched polymer having a dendrimer core and PIB branches joined by succininide linkages. Blends of the star-branched polymer with polypropylene have improved energy absorption properties and controllable moisture/oxygen permeabilities useful in films.

    摘要翻译: 公开了用末端反应性不饱和官能化的聚异丁烯(PIB)。 碳氢化合物封端的PIB在烃溶剂中使用式RO-M的醇盐进行脱卤化氢,其中R是至少5个碳原子的烷基,M是碱金属。 得到的PIB具有末端不饱和度,其反应性“外”形式为100%,可通过与马来酸酐的烯酯反应转化为琥珀酸酐基团(PIB-SA),PIB-SA与胺官能树枝状大分子反应以获得 具有树枝状聚合物核心和通过琥珀酰亚胺键连接的PIB分支的星形支化聚合物。星形支化聚合物与聚丙烯的共混物具有改善的能量吸收性能和可用于膜中的水分/氧气渗透性。