Thermoplastic segmented elastomeric copolyether-esters and their use as
pressure-sensitive adhesives
    1.
    发明授权
    Thermoplastic segmented elastomeric copolyether-esters and their use as pressure-sensitive adhesives 失效
    热塑性分段弹性体共聚醚酯及其作为压敏粘合剂的用途

    公开(公告)号:US4321341A

    公开(公告)日:1982-03-23

    申请号:US157013

    申请日:1980-06-06

    CPC分类号: C08G63/668 C09J167/00

    摘要: Thermoplastic segmented elastomeric copolyether-esters which substantially consist of a plurality of recurring short-chain and long-chain ester units linked to one another by ester bonds, the proportion of the short-chain ester units of the formula ##STR1## where R is the divalent radical remaining after removal of the carboxyl groups of aromatic dicarboxylic acids having a molecular weight of

    摘要翻译: 热塑性分段的弹性体共聚醚 - 酯,其基本上由多个通过酯键彼此连接的重复短链和长链酯单元组成,其中R为短链酯单元的比例,其中R为 在除去分子量<350的芳族二羧酸的羧基和A后残留的二价基团是在除去分子量<250的二醇的羟基后残留的二价基团,为15至75 重量%,以及其中R如上所定义的式“IMAGE”II的长链酯单元的比例,B是从长链二醇中除去末端羟基后剩余的二价基团,其来自 25至85重量%的共聚酯,并且其含有基于共聚酯的0.01至5摩尔%的用作支化剂的三官能或更高官能化合物,化学掺入到 e聚合物分子。 共聚酯特别适用于压敏粘合剂。

    Inherently light- and heat-stabilized polyamides with improved wet fastness
    5.
    发明授权
    Inherently light- and heat-stabilized polyamides with improved wet fastness 失效
    具有改善湿牢度的固有光和热稳定性聚酰胺

    公开(公告)号:US06812323B1

    公开(公告)日:2004-11-02

    申请号:US09646183

    申请日:2000-09-14

    IPC分类号: C08G6928

    摘要: A process for preparing polyamides comprises polymerizing starting monomers or starting oligomers in the presence of at least one compound of the formula (I) where R is a functional group R8 which bears 1-4 identical or different amide-forming groups R7, R1 is H, C1-C20-alkyl, cycloalkyl, benzyl or OR6, where R6 is H, C1-C20-alkyl, cycloalkyl or benzyl, R2, R3, R4 and R5 are independently C1-C10-alkyl, n is a natural number greater than 1, and the piperidine derivatives attached to R are identical or different with regard to the substituents, meaning R1, R2, R3, R4 and R5. The polyamides are useful for preparing filaments, fibers, films, sheetlike structures and moldings.

    摘要翻译: 制备聚酰胺的方法包括在至少一种式(I)化合物存在下使起始单体或起始低聚物聚合,其中R是具有1-4个相同或不同的酰胺形成基团R 7的官能团R 8 R 1是H,C 1 -C 20烷基,环烷基,苄基或OR 6,其中R 6是H,C 1 -C 20 - 烷基,环烷基或苄基,R 2,R 3 R 4和R 5独立地为C 1 -C 10 - 烷基,n为大于1的天然数,并且与R相连的哌啶衍生物相对于取代基相同或不同,意指R 1, R 2,R 3,R 4和R 5。聚酰胺可用于制备长丝,纤维,薄膜,片状结构和模制品。