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37 条记录 (耗时 0.032 秒)

    Synthesis of latex capsules
    2.
    发明授权
    Synthesis of latex capsules 失效
    乳胶胶囊的合成

    公开(公告)号：US5527613A

    公开(公告)日：1996-06-18

    申请号：US233089

    申请日：1994-04-25

    申请人： Robert M. Blankenship ,  Ronald W. Novak ,  Clarence J. Neyhart ,  Martin Vogel

    发明人： Robert M. Blankenship ,  Ronald W. Novak ,  Clarence J. Neyhart ,  Martin Vogel

    IPC分类号： C08F2/22 ,  C08F2/44 ,  C08F265/02 ,  C08F267/06 ,  C08J3/12 ,  B32B27/30

    CPC分类号： C08J3/12 ,  C08F265/02 ,  C08J3/126 ,  C09D7/125 ,  C09D7/1291 ,  C08J2333/12 ,  C08J2433/12 ,  Y10T428/2989

    摘要： The present invention is concerned with core and shell polymeric particles having microvoids in the core and one or more channels connecting the microvoids to the exterior of the particle. These particles, or LCAPs are produced by forming a core of polymeric acid, encasing the core in a shell polymer permeable to base, and then neutralizing the core such that the core swells, causing the shell to "explode" in a controlled fashion. This controlled explosion causes channels to form in the shell.These particles can be used as control release devices for target compounds, to impart reinforcing properties to acrylic films, as an opacifying agent in coating compositions, and as a supplement or replacement of part or all of the pigmentary material or extenders that would otherwise be used in such coating compositions.

    摘要翻译： 本发明涉及在芯中具有微孔的核和壳聚合物颗粒和将微孔连接到颗粒外部的一个或多个通道。 这些颗粒或LCAP通过形成聚合酸的核心，将核心包裹在可渗透碱的壳聚合物中，然后中和核心，从而使核心膨胀，导致壳体以受控的方式“爆炸”来生产。 这种受控的爆炸导致通道在外壳中形成。 这些颗粒可以用作目标化合物的控制释放装置，以赋予丙烯酸膜作为增强性能，作为涂料组合物中的遮光剂，以及补充或替代部分或全部的颜料或增量剂，否则将被使用 在这样的涂料组合物中。

    Sequential heteropolymer dispersion and a particulate material obtainable therefrom, useful in coating compositions as a thickening and/or opacifying agent
    3.
    发明授权
    Sequential heteropolymer dispersion and a particulate material obtainable therefrom, useful in coating compositions as a thickening and/or opacifying agent 失效
    顺序杂聚物分散体和可由其获得的颗粒材料，可用作涂料组合物作为增稠剂和/或遮光剂

    公开(公告)号：US4427836A

    公开(公告)日：1984-01-24

    申请号：US352396

    申请日：1982-02-25

    申请人： Alexander Kowalski ,  Martin Vogel ,  Robert M. Blankenship

    发明人： Alexander Kowalski ,  Martin Vogel ,  Robert M. Blankenship

    IPC分类号： C08F2/22 ,  C08F265/02 ,  C09D151/00

    CPC分类号： C08F2/22 ,  C08F265/02 ,  C09D151/003 ,  C09D5/028 ,  C09D7/002 ,  C09D7/125 ,  C09D7/1291 ,  Y10S525/902

    摘要： The present invention is concerned with the production and use of water-insoluble particulate heteropolymers made by sequential emulsion polymerization in dispersed particles of which a "core" of a polymeric acid is at least partially encased in a "sheath" polymer that is permeable to a volatile base, such as ammonia or an organic amine, adapted to cause swelling of the core by neutralization. The aqueous dispersion of the acid-containing core/sheath particles is useful in making water-base coating compositions wherein it may serve as an opacifying agent when a volatile base is used to at least partially (to a pH of at least 6) neutralize the heteropolymer, microvoids being formed in cores of the swollen particles in the film during the drying thereof. Thus, the heteropolymer dispersion can serve as an opacifying agent in coating compositions, such as water-base paints, as a supplement or replacement of part or all of the pigmentary material or extenders that would otherwise be used in such coating compositions.For convenience of description herein, the terms "core", "sheath", and "core/sheath polymr" are frequently used to refer to the distinct functional components of the individual polymer particles of the essential "mode" of the heteropolymers of the present invention even though in actuality, the components of the polymer particles thereof may not have the precise arrangement implied by this terminology.

    摘要翻译： 本发明涉及通过在其分散颗粒中顺序乳液聚合制备的水不溶性颗粒状杂聚物的制备和使用，其中聚合酸的“芯”至少部分地包封在可渗透的“护套”聚合物中 挥发性碱，例如氨或有机胺，适于通过中和引起芯的溶胀。 含酸芯/皮颗粒的含水分散体可用于制备水性涂料组合物，其中当使用挥发性碱至少部分（至少6的pH）时，其可以用作不透明剂，中和 杂聚物，在其干燥期间在膜中的溶胀颗粒的芯中形成微孔。 因此，杂聚聚物分散体可以用作涂料组合物中的遮光剂，例如水基涂料，作为另外将用于这种涂料组合物的部分或全部颜料材料或增量剂的补充或替代物。 为了方便本文的描述，术语“芯”，“护套”和“芯/鞘多聚体”经常用于指本发明的杂聚物的基本“模式”的各个聚合物颗粒的不同功能组分 即使实际上，其聚合物颗粒的组分可能不具有由该术语所暗示的精确布置。

    Sequential heteropolymer dispersion and a particulate materal obtainable therefrom, useful in coating compositions as a thickening and/or opacifying agent
    4.
    发明授权
    Sequential heteropolymer dispersion and a particulate materal obtainable therefrom, useful in coating compositions as a thickening and/or opacifying agent 失效
    顺序杂聚物分散体和可由其获得的颗粒物，可用于涂料组合物中作为增稠剂和/或不透明剂

    公开(公告)号：US4468498A

    公开(公告)日：1984-08-28

    申请号：US352397

    申请日：1982-02-25

    申请人： Alexander Kowalski ,  Martin Vogel ,  Robert M. Blankenship

    发明人： Alexander Kowalski ,  Martin Vogel ,  Robert M. Blankenship

    IPC分类号： C08F2/22 ,  C08F265/02 ,  C09D151/00

    CPC分类号： C08F265/02 ,  C08F2/22 ,  C09D151/003 ,  C09D5/028 ,  C09D7/002 ,  C09D7/125 ,  C09D7/1291 ,  Y10S525/901

    摘要： The present invention is concerned with the production and use of water-insoluble particulate heteropolymers made by sequential emulsion polymerization in dispersed particles of which a "core" of a polymeric acid is at least partially encased in a "sheath" polymer that is permeable to a volatile base, such as ammonia or an organic amine, adapted to cause swelling of the core by neutralization. The aqueous dispersion of the acid-containing core/sheath particles is useful in making water-base coating compositions wherein it may serve as the binder or as a part thereof. In that use, the heteropolymer dispersion serves to provide desirable rheological control of the coating compositions when a volatile base is used to at least partially (to a pH of at least 6) neutralize the heteropolymer. Thus, the heteropolymer dispersion can serve as a thickener, or part thereof in coating compositions, such as water-base paints.For convenience of description herein, the terms "core", "sheath", and "core/sheath polymer" are frequently used to refer to the distinct functional components of the individual polymer particles of the essential "mode" of the heteropolymers of the present invention even though in actuality, the components of the polymer particles thereof may not have the precise arrangement implied by this terminology.

    摘要翻译： 本发明涉及通过在其分散颗粒中顺序乳液聚合制备的水不溶性颗粒状杂聚物的制备和使用，其中聚合酸的“芯”至少部分地包封在可渗透的“护套”聚合物中 挥发性碱，例如氨或有机胺，适于通过中和引起芯的溶胀。 含酸芯/皮颗粒的水分散体可用于制备其中可用作粘合剂或作为其一部分的水性涂料组合物。 在该用途中，当使用挥发性碱至少部分（至少6的pH）中和杂聚物时，杂聚聚物分散体用于提供涂料组合物的期望的流变学控制。 因此，杂聚聚合物分散体可以用作涂料组合物中的增稠剂或其一部分，例如水基涂料。 为了便于说明，术语“核心”，“护套”和“芯/鞘聚合物”通常用于指本发明的杂聚物的基本“模式”的各个聚合物颗粒的不同功能组分 即使实际上，其聚合物颗粒的组分可能不具有由该术语所暗示的精确布置。

    Multi-stage opacifying polymer particles containing non-polymeric acid absorbed therein
    10.
    发明授权
    Multi-stage opacifying polymer particles containing non-polymeric acid absorbed therein 失效
    含有非聚合酸的多级不透明聚合物颗粒被吸收

    公开(公告)号：US4970241A

    公开(公告)日：1990-11-13

    申请号：US382612

    申请日：1989-07-19

    申请人： Alexander Kowalski ,  Martin Vogel

    发明人： Alexander Kowalski ,  Martin Vogel

    IPC分类号： C08F285/00 ,  C08J9/28 ,  C09D7/12

    CPC分类号： C08J9/28 ,  C08F285/00 ,  C09D7/1291 ,  Y10S525/902

    摘要： Multi-stage polymer particles containing one or more void space(s) therein are produced by sequential emulsion polymerization of an essentially low-acid earlier polymer stage, encapsulation of said low-acid polymer stage with at least a final polymer stage, contacting said polymer particles with a non-polymeric carboxylic acid or anhydride to permit the acid or anhydride to be absorbed into said low-acid polymer stage and swelling the polymer particles by contacting the particles with an aqueous base. The low-acid polymer stage is formed by emulsion polymerizing a monomer system comprising ethylenically unsaturated monomer(s) and containing less than 5% by weight of monomer(s) containing acid functionality. The low-acid polymer stage is swubsequently encapsulated by one or more polymer stages by emulsion polymerizing ethylenically unsaturated monomer(s) in the presence of the low-acid polymer stage. The final stage has a glass transition temperature (Tg) of about 50.degree. C. or greater, and the total polymer stages having a Tg of about 50.degree. C. or greater comprise about 60% or more by weight of the polymer particles. A non-polymeric carboxylic acid or anhydride is absorbed into the polymer particles and the resultant particles are contacted with base at a pH sufficient to swell the particles with water at a temperature near or above the Tg of the neat polymer or plasticized polymer of the final polymer stage. When dried the particles contain void space(s) therein which produce(s) opacity in compositions in which the particles are contained.

    摘要翻译： 在其中含有一个或多个空隙空间的多级聚合物颗粒通过基本上低酸的较早聚合物阶段的顺序乳液聚合制备，所述低酸聚合物阶段至少包含最终聚合物阶段，使所述聚合物接触 具有非聚合羧酸或酸酐的颗粒，以允许酸或酸酐被吸收到所述低酸聚合物阶段中，并通过使颗粒与碱水溶液接触来使聚合物颗粒膨胀。 通过乳液聚合包含烯属不饱和单体并且含有少于5重量％的含有酸官能团的单体的单体体系形成低酸聚合物阶段。 低酸聚合物阶段通过在低酸聚合物阶段的存在下通过乳液聚合烯键式不饱和单体而被一个或多个聚合物阶段封装。 最终阶段具有约50℃或更高的玻璃化转变温度（Tg），并且具有约50℃或更高Tg的总聚合物阶段包含约60重量％或更多的聚合物颗粒。 非聚合的羧酸或酸酐被吸收到聚合物颗粒中，并且所得颗粒在足以在最终纯净聚合物或增塑聚合物的Tg附近或更高的温度下用水溶胀颗粒的pH与碱接触 聚合物阶段。 当干燥时，颗粒中含有空隙空间，其中含有颗粒的组合物中产生不透明度。