Polymers containing sulphonyl and carboxylic ester groups
    31.
    发明授权
    Polymers containing sulphonyl and carboxylic ester groups 失效
    含有磺酰基和羧酸酯基团的聚合物

    公开(公告)号:US4535139A

    公开(公告)日:1985-08-13

    申请号:US491682

    申请日:1983-05-05

    CPC分类号: C08F228/02

    摘要: Polymers obtained by radical polymerization and containing(A) from 0.1 to 80 mole percent of polymerized units corresponding to the following formula ##STR1## in which R.sub.1 represents hydrogen or methyl,R.sub.2 represents alkyl, particularly primary or secondary alkyl containing from 1 to 4 carbon atoms, andR.sub.3 represents hydrogen or alkyl, particularly primary or secondary alkyl containing from 1 to 4 carbon atoms, and in which the sulphonic acid group may be present in the form of a salt, and(B) from 20 to 99.9 mole percent of polymerized units of one or more ethylenically unsaturated monomers, are particularly suitable for the production of filaments, fibres and films having a high absorption capacity for basic dyes.

    摘要翻译: 通过自由基聚合获得的聚合物,其含有(A)0.1至80摩尔%的对应于下式的成像单元(IMAGE),其中R 1表示氢或甲基,R 2表示烷基,特别是含有1至4个碳原子的伯或仲烷基 原子,R 3表示氢或烷基,特别是含有1至4个碳原子的伯或仲烷基,其中磺酸基团可以盐形式存在,(B)20-99.9摩尔% 一种或多种烯键式不饱和单体的聚合单元特别适用于生产碱性染料具有高吸收能力的长丝,纤维和薄膜。

    Elasthane fibers stabilized against environmental influences
    35.
    发明授权
    Elasthane fibers stabilized against environmental influences 失效
    弹性纤维可以抵御环境影响

    公开(公告)号:US4877825A

    公开(公告)日:1989-10-31

    申请号:US323042

    申请日:1989-03-10

    CPC分类号: D01F6/70 C08K5/3477 C08K5/527

    摘要: The invention relates to elasthane fibers which are protected against harmful environmental influences, particularly sunlight and combustion gases, by a synergistic stabilizer combination of(a) highly alkylated, phenolic antioxidants corresponding to the following formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 are C.sub.1 -C.sub.3 alkyl radicals, in addition to which R.sup.3 may be C.sub.4 -C.sub.6 alkyl radicalsand(b) oligomeric, (cyclo)aliphatic phosphorous acid esters (oligomeric phosphites) obtained by reaction of pentaerythritol, perhydrobisphenol A and, optionally, a mono- alcohol with monomeric trialkyl or triaryl phosphites.

    摘要翻译: 本发明涉及通过以下协同稳定剂组合(a)高度烷基化的酚类抗氧化剂,其对应于下列式(Ⅰ),其中R 1,R 2和R 3是保护免受有害环境影响的特别是阳光和燃烧气体的弹性纤维 除了R 3可以是C 4 -C 6烷基以外,还有(b)通过季戊四醇,全氢双酚A和任选的单 - (C 1 -C 6)烷基反应获得的低聚,(环)脂族亚磷酸酯 - 醇与单体三烷基或三芳基亚磷酸酯。

    Production of copolymers of acrylonitrile and vinyl chloride
    40.
    发明授权
    Production of copolymers of acrylonitrile and vinyl chloride 失效
    生产丙烯腈和氯乙烯的共聚物

    公开(公告)号:US4334046A

    公开(公告)日:1982-06-08

    申请号:US95724

    申请日:1979-11-19

    CPC分类号: C08F214/06 C08F220/44

    摘要: The invention relates to a process for the production of a chemically uniform acrylonitrile vinyl chloride copolymer in an aqueous emulsion in the presence of a redox catalyst and with a fluctuating concentration of at least one iron salt in the reaction medium wherein the polymerization reaction is carried out at a pH value of from 2 to 6 in the presence of a mixture of an iron salt and a complex former, the complex former having certain apparent stability constants of the iron-II-complex and of the iron-III-complex.

    摘要翻译: 本发明涉及一种在氧化还原催化剂存在下在水性乳液中制备化学均匀的丙烯腈氯乙烯共聚物的方法,并且在反应介质中具有波动浓度的至少一种铁盐,其中进行聚合反应 在铁盐和络合物的混合物存在下,在2-6的pH值下,络合物具有铁-II-络合物和铁-III-络合物的一定表观稳定常数。