Alkai-soluble, water-resistant binders for non-woven materials
    2.
    发明授权
    Alkai-soluble, water-resistant binders for non-woven materials 失效
    用于非织造材料的Alkai可溶性防水粘合剂

    公开(公告)号:US4278727A

    公开(公告)日:1981-07-14

    申请号:US044667

    申请日:1979-06-01

    摘要: A non-woven material containing from 2% to 25% by dry weight of an alkali-soluble, water-resistant in neutral to weakly acidic solutions, binder for non-woven materials based on an aqueous vinyl acetate copolymer containing protective colloids and optionally emulsifiers and having the following monomer units(1) 50% to 70% of vinyl acetate(2) 20% to 35% of vinyl esters of higher alkanoic acids and/or higher alkyl esters of acrylic or methacrylic acids, and(3) 3% to 15% of ethylenically-unsaturated acids, said binder being applied to said non-woven material as an aqueous dispersion and subsequently dried.

    摘要翻译: 含有2%至25%干重的无碱材料,中性至弱酸性溶液的耐水性,基于含有保护胶体和任选的乳化剂的乙酸乙烯酯共聚物的无纺材料的粘合剂 并且具有以下单体单元(1)50%至70%的乙酸乙烯酯(2)20%至35%的高级链烷酸和/或丙烯酸或甲基丙烯酸的高级烷基酯的乙烯基酯,和(3)3% 至15%的烯属不饱和酸,所述粘合剂作为水分散体施用于所述非织造材料,随后干燥。

    Aqueous polymer dispersions preparation
    3.
    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%。

    Adhesive aqueous dispersions of polyvinyl alcohol graft polymers with
acidic hardeners and process of production
    4.
    发明授权
    Adhesive aqueous dispersions of polyvinyl alcohol graft polymers with acidic hardeners and process of production 失效
    具有酸性硬化剂的聚乙烯醇接枝聚合物的粘合剂水性分散体和生产方法

    公开(公告)号:US4118357A

    公开(公告)日:1978-10-03

    申请号:US792682

    申请日:1977-05-02

    CPC分类号: C09J151/003 C08F261/04

    摘要: An aqueous copolymer adhesive dispersion having a long pot life and giving highly waterproof bonds, comprising an acid hardener of water-soluble acids having pKs of under 0 and an aqueous dispersion of a pre-crosslinked polyvinyl ester grafted onto polyvinyl alcohol, said polyvinyl ester being an ester of an acid of 1 to 12 carbon atoms and said pre-crosslinking caused by the presence of small amounts of poly-ethylenically-unsaturated compounds in the monomer mixture, as well as the aqueous dispersion and the method for its production.

    摘要翻译: 一种水性共聚物粘合剂分散体,其具有长的适用期并提供高度防水的粘合剂,其包含pKs低于0的水溶性酸的酸性固化剂和接枝到聚乙烯醇上的预交联聚乙烯酯的水分散体,所述聚乙烯酯是 1至12个碳原子的酸的酯和由单体混合物中少量聚烯键式不饱和化合物的存在引起的所述预交联,以及水分散体及其制备方法。

    Polymerization process for aqueous polymer dispersions of vinyl esters
and ethylenic monomers
    5.
    发明授权
    Polymerization process for aqueous polymer dispersions of vinyl esters and ethylenic monomers 失效
    乙烯基酯和乙烯单体的聚合物水分散体的聚合方法

    公开(公告)号:US4532295A

    公开(公告)日:1985-07-30

    申请号:US625672

    申请日:1984-06-28

    摘要: A process for the preparation of aqueous polymer dispersions comprising polymerizing vinyl esters and up to 50% by weight of the total monomer of 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 member of the group consisting of cyanalkylated starch, hydroxyalkylated starch and carboxyalkylated starch and optionally present conventional adjuvants with the starting mixture containing not more than one-third of the total monomers and the remaining monomers being added by metering during the polymerization, the initiators being at least one member of the group consisting of hydrogen peroxide and organic hydroperoxides in an amount of at least 30 mmol per kg of total monomer mixture and optionally present water-soluble reducing agent and the amount of starch being at least 1% 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,包括在至少部分水存在下,在10-100℃温度下使乙烯基酯和至多50重量%的具有不饱和烯键的化合物的总单体聚合 可溶的自由基引发剂和由氰烷基化淀粉,羟烷基化淀粉和羧烷基化淀粉组成的组中的至少一种淀粉成分,以及任选存在的起始混合物的起始混合物含有不超过总单体的三分之一,其余单体为 在聚合过程中通过计量加入,引发剂为至少一种由过氧化氢和有机氢过氧化物组成的组,其量为至少30mmol / kg总单体混合物和任选存在的水溶性还原剂, 淀粉基于单体总重量为至少1重量%。