Ketone bisulfites as reducing agent for free radical polymerization
    1.
    发明授权
    Ketone bisulfites as reducing agent for free radical polymerization 失效
    酮亚硫酸氢盐作为自由基聚合的还原剂

    公开(公告)号:US4360632A

    公开(公告)日:1982-11-23

    申请号:US314318

    申请日:1981-10-23

    CPC分类号: C08F4/40

    摘要: This invention relates to an improvement in a process for producing a latex containing dispersed polymer. The improvement in the process for polymerizing a reaction mixture of vinyl monomer, stabilizer, oxidizing agent and reducing agent comprises using a water-soluble ketone bisulfite as the reducing agent, either alone or with other reducing agents, the ketone having from 3 to 8 carbon atoms in the structure. During the polymerization, the ketone bisulfite is maintained in stoichiometric excess of the oxidizing agent. Vinyl acetate-ethylene copolymers are some of the preferred polymer systems produced.

    摘要翻译: 本发明涉及一种制备含分散聚合物的胶乳的方法的改进。 用于聚合乙烯基单体,稳定剂,氧化剂和还原剂的反应混合物的方法的改进包括使用水溶性亚硫酸氢亚酮作为还原剂,单独或与其它还原剂一起使用,所述酮具有3至8个碳 原子在结构中。 在聚合期间,酮亚硫酸氢盐保持在化学计量过量的氧化剂中。 乙酸乙烯酯 - 乙烯共聚物是一些优选的聚合物体系。

    Extrudable polyvinyl alcohol compositions containing modified starches
    3.
    发明授权
    Extrudable polyvinyl alcohol compositions containing modified starches 失效
    含有改性淀粉的可挤出的聚乙烯醇组合物

    公开(公告)号:US5362778A

    公开(公告)日:1994-11-08

    申请号:US17932

    申请日:1993-02-16

    CPC分类号: C08L3/00 C08L29/04 C08L3/04

    摘要: An extrudable polyvinyl alcohol composition useful for packaging and molding applications is prepared by melt blending polyvinyl alcohol and thermoplastic modified starch to provide a product which has reduced water sensitivity, improved modulus and reduced elongation at high relative humidity.A method for extruding the polyvinyl alcohol composition comprises:adding sufficient energy to the polyvinyl alcohol composition to both melt it and essentially eliminate the polyvinyl alcohol crystallinity in the melt, andsimultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol.The thermoplastic modified starch may be added to the polyvinyl alcohol before or during the melting of the polyvinyl alcohol and elimination of its crystallinity, or the starch may be blended with the thus treated polyvinyl alcohol and then melt extruding the polyvinyl alcohol/starch blend.

    摘要翻译: 通过熔融共混聚乙烯醇和热塑性改性淀粉制备可用于包装和模塑应用的可挤出聚乙烯醇组合物,以提供在高相对湿度下具有降低的水敏感性,改进的模量和降低的伸长率的产品。 用于挤出聚乙烯醇组合物的方法包括:向聚乙烯醇组合物中加入足够的能量以使其熔融并基本上消除熔融物中的聚乙烯醇结晶度,同时以足以避免聚乙烯醇分解的速率从熔体中除去能量 醇。 热塑性改性淀粉可以在聚乙烯醇熔融之前或期间加入到聚乙烯醇中并消除其结晶度,或者淀粉可以与如此处理的聚乙烯醇共混,然后熔融挤出聚乙烯醇/淀粉共混物。

    Copolymers of vinyl alcohol and poly(alkyleneoxy)acrylates
    4.
    发明授权
    Copolymers of vinyl alcohol and poly(alkyleneoxy)acrylates 失效
    乙烯醇和聚(亚烷氧基)丙烯酸酯的共聚物

    公开(公告)号:US4618648A

    公开(公告)日:1986-10-21

    申请号:US727638

    申请日:1985-04-26

    申请人: Finn L. Marten

    发明人: Finn L. Marten

    IPC分类号: C08F8/12 C08F16/06

    CPC分类号: C08F8/12

    摘要: A vinyl alcohol copolymer comprising the following general structure: ##STR1## wherein R is hydrogen or methyl;R.sup.1 is hydrogen or methyl;R.sup.2 is hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.6 -C.sub.20 aryl or C.sub.7 -C.sub.30 alkylaryl;n is a number from 1-1,000;x is 50-99.9 mole %;y is 0-50 mole %; and z is 0.001-50 mole %.

    摘要翻译: 包含以下一般结构的乙烯醇共聚物:其中R是氢或甲基; R1是氢或甲基; R2是氢,C1-C20烷基,C6-C20芳基或C7-C30烷基芳基; n是1-1000的数字; x为50-99.9摩尔%; y为0-50摩尔%; z为0.001-50摩尔%。

    Solid state process for modification of polyvinyl alcohol using
Michael-type addition
    5.
    发明授权
    Solid state process for modification of polyvinyl alcohol using Michael-type addition 失效
    使用迈克尔型添加剂改性聚乙烯醇的固态方法

    公开(公告)号:US5350801A

    公开(公告)日:1994-09-27

    申请号:US89067

    申请日:1993-07-07

    CPC分类号: C08F8/34

    摘要: A solid state process for modifying polyvinyl alcohol using a Michael-type addition wherein dry polyvinyl alcohol powder is sprayed with a solution of a monomer capable of Michael-type addition in an amount sufficient to swell the polyvinyl alcohol or maintain its swollen state, but not dissolve or form a slurry of the polyvinyl alcohol. The swollen polyvinyl alcohol is sprayed with a catalyst and the temperature is raised to initiate the reaction between the polyvinyl alcohol and the monomer.

    摘要翻译: 使用迈克尔型添加剂改性聚乙烯醇的固态方法,其中干燥聚乙烯醇粉末用能够迈克尔型加成的单体溶液以足以溶胀聚乙烯醇或保持其溶胀状态的量喷雾 溶解或形成聚乙烯醇的浆液。 用催化剂喷雾膨胀的聚乙烯醇,升高温度以引发聚乙烯醇与单体之间的反应。

    Extrudable polyvinyl alcohol compositions containing thermoplastic
polyethylene oxide
    6.
    发明授权
    Extrudable polyvinyl alcohol compositions containing thermoplastic polyethylene oxide 失效
    含有热塑性聚乙烯氧化物的可挤出的聚乙烯醇组合物

    公开(公告)号:US5206278A

    公开(公告)日:1993-04-27

    申请号:US779218

    申请日:1991-10-18

    IPC分类号: C08L29/04 C08L71/02

    摘要: An extrudable polyvinyl alcohol composition useful for packaging and molding applications is prepared by melt blending polyvinyl alcohol and thermoplastic polyethylene oxide to provide a product which has improved pH stability and salt solution solubility. Useful extruded articles prepared from such compositions include films and containers.A method for extruding the polyvinyl alcohol composition comprises:adding sufficient energy to the polyvinyl alcohol composition to both melt it and essentially eliminate the polyvinyl alcohol crystallinity in the melt, andsimultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol.The thermoplastic polyethylene oxide may be added to the polyvinyl alcohol before the polyvinyl alcohol is melted and its crystallinity eliminated or blended with the thus thermally treated polyvinyl alcohol and then melt extruding the polyvinyl alcohol/polyethylene oxide blend.

    Extrudable polyvinyl alcohol compositions containing thermoplastic
polyurethane
    7.
    发明授权
    Extrudable polyvinyl alcohol compositions containing thermoplastic polyurethane 失效
    含有热塑性聚氨酯的可挤出聚乙烯醇组合物

    公开(公告)号:US5028648A

    公开(公告)日:1991-07-02

    申请号:US551350

    申请日:1990-07-12

    CPC分类号: C08L29/04 C08L75/04

    摘要: An extruable polyvinyl alcohol composition useful for packaging and molding applications is prepared by melt blending polyvinyl alcohol and thermoplastic polyurethane to provide a product which has low water absorptivity, improved impact resistance, and improved low temperature/low humidity tensile properties. Useful extruded articles prepared from such compositions include films and bottles.A method for extruding the polyvinyl alcohol composition comprises:adding sufficient energy to the polyvinyl alcohol composition to both melt it and essentially eliminate the polyvinyl alcohol crystallinity in the melt, andsimultaneously removing energy from the melt at a rate sufficient to avoid decomposition of the polyvinyl alcohol.The thermoplastic polyurethane may be added to the polyvinyl alcohol before the polyvinyl alcohol is melted and its crystallinity eliminated or blended with the thus treated polyvinyl alcohol and then melt extruding the polyvinyl alcohol/polyurethane blend.

    摘要翻译: 通过熔融共混聚乙烯醇和热塑性聚氨酯制备可用于包装和模塑应用的可挤出的聚乙烯醇组合物,以提供具有低吸水性,改善的耐冲击性和改善的低温/低湿拉伸性能的产品。 由这种组合物制备的有用的挤压制品包括薄膜和瓶子。 用于挤出聚乙烯醇组合物的方法包括:向聚乙烯醇组合物中加入足够的能量以使其熔融并基本上消除熔体中的聚乙烯醇结晶度,同时以足以避免聚乙烯醇分解的速率从熔体中除去能量 醇。 在聚乙烯醇熔融之前可以将热塑性聚氨酯加入到聚乙烯醇中,并且将其结晶性消除或与如此处理的聚乙烯醇混合,然后熔融挤出聚乙烯醇/聚氨酯共混物。

    Low foaming, high weaving efficiency polyvinyl alcohol size composition
    8.
    发明授权
    Low foaming, high weaving efficiency polyvinyl alcohol size composition 失效
    低发泡,高编织效率的聚乙烯醇大小组成

    公开(公告)号:US4797127A

    公开(公告)日:1989-01-10

    申请号:US171206

    申请日:1988-03-17

    摘要: An aqueous size composition for cotton-containing textile yarn comprising in an aqueous solution(a) 100 parts polyvinyl alcohol(b) 2-15 parts hydrophobic waxy material(c) 0.2-5 parts ethylene oxide-propylene oxide surfactant which has a surface tension between about 37 and 48 dynes/cm as a 0.1% aqueous solution at 25.degree. C., and a foaming number less than about 20 (ml foam/g solution).degree. F. as a 7% aqueous polyvinyl alcohol solution containing 11.4 parts hydrogenated tallow wax and 2 parts surfactant per 100 parts polyvinyl alcohol.

    摘要翻译: 一种含棉纺织纱线的水性组合物,其包含水溶液(a)100份聚乙烯醇(b)2-15份疏水性蜡质材料(c)0.2-5份环氧乙烷 - 环氧丙烷表面活性剂,其具有表面张力 在25℃下为约37至48达因/厘米,0.1%水溶液,发泡数小于约20(ml泡沫/克溶液)DEG,作为含有11.4份氢化的7%聚乙烯醇水溶液 牛脂蜡和每100份聚乙烯醇2份表面活性剂。

    Copolymers of vinyl acetate and poly(alkyleneoxy) acrylates
    9.
    发明授权
    Copolymers of vinyl acetate and poly(alkyleneoxy) acrylates 失效
    乙酸乙烯酯和聚(亚烷氧基)丙烯酸酯的共聚物

    公开(公告)号:US4708999A

    公开(公告)日:1987-11-24

    申请号:US894419

    申请日:1986-08-08

    申请人: Finn L. Marten

    发明人: Finn L. Marten

    IPC分类号: C08F8/12 C08F18/00

    摘要: A substantially homogeneous random vinyl acetate copolymer comprising the following general structure: ##STR1## wherein R is hydrogen or methyl;R.sup.1 is hydrogen or methyl;R.sup.2 is hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.6 -C.sub.20 aryl or C.sub.7 -C.sub.30 alkylaryl;n is a number from 1-1,000;y is 50-99.999 mole%; andz is 0.001-50 mole%.The vinyl acetate copolymer is hydrolyzed to provide a substantially random homogeneous vinyl alcohol copolymer that can be thermoplastically processed into shaped articles possessing good gas barrier properties.

    摘要翻译: 一种基本上均匀的无规乙酸乙烯酯共聚物,其包含以下一般结构:其中R是氢或甲基; R1是氢或甲基; R2是氢,C1-C20烷基,C6-C20芳基或C7-C30烷基芳基; n是1-1000的数字; y为50-99.999摩尔%; z为0.001-50摩尔%。 将乙酸乙烯酯共聚物水解以提供可以热塑性加工成具有良好阻气性的成型制品的基本上无规均匀的乙烯醇共聚物。

    Method for increasing the low temperature water solubility and the
sticking temperature of fully hydrolyzed polyvinyl alcohol
    10.
    发明授权
    Method for increasing the low temperature water solubility and the sticking temperature of fully hydrolyzed polyvinyl alcohol 失效
    提高全水解聚乙烯醇的低温水溶性和粘附温度的方法

    公开(公告)号:US4529775A

    公开(公告)日:1985-07-16

    申请号:US538257

    申请日:1983-10-03

    申请人: Finn L. Marten

    发明人: Finn L. Marten

    CPC分类号: C08J3/00 C08F6/24 C08J2329/04

    摘要: A method is provided for reducing the solvent content and increasing the sticking temperature of polyvinyl alcohol, which is prepared from the alcoholysis of polyvinyl acetate, charged to a dryer. The polyvinyl alcohol from the alcoholysis reaction, without prior vacuum drying at an elevated temperature, is slurried in a liquid medium comprising methanol, methyl acetate, water and, optionally, a nonsolvent for polyvinyl alcohol. The slurry is heated to at least 60.degree. C. for at least 5 minutes. The polyvinyl alcohol burnt particle count is reduced in the subsequent drying step and a product is afforded which has a reduced ash content and increased cold water solubility and low temperature solubility.

    摘要翻译: 提供了一种降低溶剂含量并提高由聚乙酸乙烯酯的醇解制备的聚乙烯醇粘附温度的方法,将其装入干燥器中。 来自醇解反应的聚乙烯醇在未经真空干燥的高温下在包含甲醇,乙酸甲酯,水和任选的非聚乙烯醇非溶剂的液体介质中制浆。 将浆料加热至至少60℃至少5分钟。 在随后的干燥步骤中,聚乙烯醇燃烧的颗粒数量减少,并且提供具有降低的灰分含量和增加的冷水溶解度和低温溶解度的产物。