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    • 1. 发明授权
    • Apparatus for the preparation of bonding fibers from polymer dispersions
    • 用于从聚合物分散体制备粘合纤维的装置
    • US4534720A
    • 1985-08-13
    • US400045
    • 1982-07-20
    • Richard BungKarl GansGerold SchreyerGerhard Welzel
    • Richard BungKarl GansGerold SchreyerGerhard Welzel
    • D01D5/06D01D5/40D04H1/54B22F9/00
    • D01D5/40
    • An apparatus for the preparation of bonding fibers, especially for the production of nonwovens by a wet-lay process, wherein a polymer dispersion, containing an anionic or nonionic dispersant, and an aqueous solution, containing a dissolved cationic precipitant, are combined to cause fiber formation from precipitated polymer particles, which apparatus includes a feed funnel spaced above the bottom of a homogenization vessel with both a nozzle for introducing the polymer dispersion and a metering device for the precipitant, which are so arranged and aimed into the funnel that in co-operation with a stirrer a vortex is produced in a column of liquid in the feed funnel, and fibers are formed and broken up while passing through a turbulence chamber, located at the bottom of the funnel, and a gap into a homogenization chamber.
    • 用于制备粘合纤维的装置,特别是用于通过湿法生产非织造布的装置,其中将含有阴离子或非离子分散剂的聚合物分散体和含有溶解的阳离子沉淀剂的水溶液组合以引起纤维 由沉淀的聚合物颗粒形成,该装置包括在均质化容器的底部间隔开的进料漏斗,其具有用于引入聚合物分散体的喷嘴和用于沉淀剂的计量装置,其被布置和瞄准到漏斗中, 用搅拌器操作,在进料漏斗中的液体柱中产生涡流,并且在通过位于漏斗底部的湍流室和形成均匀化室的间隙中形成纤维并将其分解。
    • 7. 发明授权
    • Preparation of copolymer dispersions having a narrow particle size
distribution, and exhibiting dilatant flow over a broad range of
concentrations
    • 制备具有窄的粒度分布的共聚物分散体,并且在宽的浓度范围内表现出膨胀的流动
    • US4371636A
    • 1983-02-01
    • US279548
    • 1981-07-01
    • Dieter DistlerHans WolfGerhard Welzel
    • Dieter DistlerHans WolfGerhard Welzel
    • C08F2/00C08F2/22C08F2/24C08F6/00C08F6/14C08F220/00C08F220/04C08F220/12C08F246/00C08J3/02C08J3/09C08L35/06
    • C08F220/12C08J3/02C08J3/09
    • A process for the preparation of copolymer dispersions having a narrow particle size distribution, and exhibiting dilatant flow over a broad range of concentrations, by emulsion copolymerization of from 1 to 10% by weight, based on total monomers, of .alpha.,.beta.-monoolefinically unsaturated monocarboxylic acids and/or dicarboxylic acids with other monoolefinically unsaturated monomers and with from 0 to 5% by weight of polyolefinically unsaturated monomers in the presence of conventional emulsifiers, dispersants and polymerization initiators, and in the presence or absence of regulators, wherein the monomers are copolymerized in aqueous emulsion, with simultaneous agglomeration but only partial fusion of the initially formed polymer particles, at a temperature near the glass transition temperature of the copolymer formed, and thereafter(A) the copolymer content of the aqueous copolymer dispersion is brought to 35-55% by weight and the pH to 3-5 or(B) the water contained in the aqueous copolymer dispersion is entirely or partially replaced by a water-miscible liquid which does not dissolve or swell the copolymer.
    • 通过基于总单体1至10重量%的α,β-单烯属不饱和的共聚物的乳液共聚制备共聚物分散体的方法,其具有窄的粒度分布,并且在宽的浓度范围内表现出膨胀的流动 单羧酸和/或二羧酸与其它单烯属不饱和单体和0-5重量%的聚烯烃不饱和单体在常规乳化剂,分散剂和聚合引发剂存在下,以及在存在或不存在调节剂的情况下,其中单体为 共聚在水性乳液中,同时凝聚,但是仅在形成的共聚物的玻璃化转变温度附近的温度下仅部分熔融,此后(A)使含水共聚物分散体的共聚物含量达到35- 55重量%,pH至3-5或(B)水中含有的水 共聚物分散体完全或部分地被不溶解或溶胀共聚物的水混溶性液体代替。