Aqueous polymer dispersions preparation
    5.
    发明授权
    Aqueous polymer dispersions preparation 失效
    水性聚合物分散体制备

    公开(公告)号:US4560724A

    公开(公告)日:1985-12-24

    申请号:US625669

    申请日:1984-06-28

    CPC分类号: C08F2/20

    摘要: A process for the preparation of aqueous polymer dispersions comprising polymerizing compounds with unsaturated ethylenic bonds at a temperature of 10.degree. to 100.degree. C. in the presence of an at least partially water-soluble free-radical initiator and at least one starch and/or starch derivative and optionally present conventional adjuvants with the starting mixture containing not more than one third of the total monomers and the remaining monomer being added during the polymerization, the initiators being at least one member of the group consisting of hydrogen peroxide, ketone peroxides and organic hydroperoxides in an amount of at least 30 mmol per kg of total monomer mixture and optionally present water-soluble reducing agents and the starch is water-soluble or gells in water and contains not more than 30% by weight of amylose and the starch derivative is hydrolyzed starch in an amount of at least 0.6% by weight based on the total monomer weight.

    摘要翻译: 一种制备含水聚合物分散体的方法,包括在至少部分水溶性自由基引发剂和至少一种淀粉和/或其中存在下,在10℃至100℃的温度下聚合具有不饱和烯键的化合物 淀粉衍生物和任选存在的常规助剂,起始混合物含有不超过总单体的三分之一,剩余的单体在聚合过程中加入,引发剂是由过氧化氢,酮过氧化物和有机物组成的组中的至少一种 氢过氧化物的量为至少30mmol / kg总单体混合物和任选存在的水溶性还原剂,淀粉是水溶性的或在水中凝胶并且含有不超过30重量%的直链淀粉,淀粉衍生物是 基于总单体重量,水解淀粉的量为至少0.6重量%。

    Crosslinkable polymer powder compositions
    6.
    发明授权
    Crosslinkable polymer powder compositions 失效
    可交联聚合物粉末组合物

    公开(公告)号:US5608011A

    公开(公告)日:1997-03-04

    申请号:US526537

    申请日:1995-09-11

    CPC分类号: C08L101/02 C08J3/203 C08K5/14

    摘要: The invention relates to water-dispersible or water-soluble polymer powder compositions which can be crosslinked or condensed by acid and comprisesI) one or more pulverulent water-dispersible or water-soluble copolymers which can be crosslinked or condensed by acid,II) one or more pulverulent water-dispersible or water-soluble compounds from the group consisting of alkali metal or ammonium peroxo acid salts, andIII) one or more pulverulent water-dispersible or water-soluble reducing agents.

    摘要翻译: 本发明涉及可由酸交联或缩合的水分散性或水溶性聚合物粉末组合物,并且包括I)一种或多种可由酸交联或缩合的粉状水分散性或水溶性共聚物,II)一种 或更多的粉状水分散性或水溶性化合物,以及III)一种或多种粉状水分散性或水溶性还原剂。

    Process for the modification of dispersion powder compositions
    9.
    发明授权
    Process for the modification of dispersion powder compositions 失效
    改性分散粉组合物的方法

    公开(公告)号:US5959017A

    公开(公告)日:1999-09-28

    申请号:US700785

    申请日:1996-08-21

    CPC分类号: C08J3/226 C08J3/22

    摘要: A process for the preparation of water-redispersible dispersion powder compositions which are modified with additives and are based on polymers of ethylenically unsaturated compounds, includes drying the corresponding aqueous polymer dispersion and applying additives, which are liquid at a temperature of .ltoreq.50.degree. C., to a pulverulent carrier material, and then adding the resulting powder during or after drying of said dispersion.

    摘要翻译: 制备用添加剂改性并基于烯键式不饱和化合物的聚合物的水可再分散分散粉末组合物的方法包括干燥相应的聚合物水分散体和施加添加剂,其在50℃的温度下为液体 C.向粉末载体材料中,然后在所述分散体干燥期间或之后加入所得粉末。