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927 条记录 (耗时 0.024 秒)

    Hollow acrylate polymer microspheres
    92.
    发明授权
    Hollow acrylate polymer microspheres 失效
    中空丙烯酸酯聚合物微球

    公开(公告)号：US5045569A

    公开(公告)日：1991-09-03

    申请号：US276767

    申请日：1988-11-30

    申请人： Joaquin Delgado

    发明人： Joaquin Delgado

    IPC分类号： C08J3/16 ,  C08F2/00 ,  C08F2/24 ,  C08F20/10 ,  C08L33/00 ,  C08L33/04 ,  C09J133/00 ,  C09J133/04 ,  C09J133/06

    CPC分类号： C09J133/06 ,  C08F2/24 ,  C08L2205/20 ,  C09J2201/606 ,  Y10T428/2982

    摘要： Hollow, polymeric, acrylate, infusible, inherently tacky, solvent-insoluble, solvent-dispersible, elastomeric pressure-sensitive adhesive microspheres having an average diameter of at least about 1 micrometer. Preferred microspheres are those wherein a majority of the hollow microspheres contain at least one of interior void having a diamter of at least 10% of the diameter of the microsphere.These hollow microspheres are useful as repositionable pressure-sensitive adhesives. The invention also provides pressure-sensitive adhesives consisting essentially of such hollow microspheres. Aqueous suspensions of these microspheres, processes for their preparation, spray repositionable pressure-sensitive adhesive compositions, and microsphere-coated sheet materials are also provided. Surprisingly, hollow microspheres of the invention show reduced or even eliminated adhesive transfer, in comparison with prior art repositionable pressure-sensitive adhesives which are based on solid microspheres.

    Binder for aqueous gloss paints
    93.
    发明授权
    Binder for aqueous gloss paints 失效
    水性光泽漆的粘合剂

    公开(公告)号：US5021469A

    公开(公告)日：1991-06-04

    申请号：US468600

    申请日：1990-01-23

    申请人： Klaus Langerbeins ,  Wolfgang Klesse ,  Dieter Tessmer ,  Wilhelm Elser ,  Hans-Juergen Geyer

    发明人： Klaus Langerbeins ,  Wolfgang Klesse ,  Dieter Tessmer ,  Wilhelm Elser ,  Hans-Juergen Geyer

    IPC分类号： C08F265/00 ,  C08F2/22 ,  C08F2/24 ,  C08F285/00 ,  C08F291/00 ,  C09D151/00

    CPC分类号： C09D151/00 ,  C08F285/00 ,  C08F291/00 ,  Y10S525/902

    摘要： The inventive vehicle, or binder, for water based gloss paints contains, dispersed in a aqueous phase, particles of a multiphase emulsion polymer made up of(a) core material having a glass transition temperature exceeding 40.degree. C. and(b) a shell material having a glass transition temperature of less than 70.degree. C. and at least 20 K. below that of the core material.The particles have an average diameter of less than 200 nm. The composition of the shell material includes an emulsion polymer with at least 4 percent by weight of an ethylenically unsaturated carboxylic acid and more than 80 percent by weight of one or more monomers from the group consisting of styrene and alkyl esters of acrylic and/or methacrylic acid. Paint coats produced with this vehicle are distinguished by a high blocking point.

    摘要翻译： 用于水基光泽涂料的本发明的载体或粘合剂在水相中含有由（a）玻璃化转变温度超过40℃的芯材料组成的多相乳液聚合物颗粒，（b）壳 材料的玻璃化转变温度低于70℃，至少20K以下。 颗粒的平均直径小于200nm。 壳材料的组成包括具有至少4重量％的烯键式不饱和羧酸和大于80重量％的一种或多种单体的乳液聚合物，所述单体来自苯乙烯和丙烯酸和/或甲基丙烯酸烷基酯 酸。 用这种车辆生产的油漆涂层被高阻挡点区分开来。

    Stabilized polymer latex composition
    95.
    发明授权
    Stabilized polymer latex composition 失效
    稳定的聚合物胶乳组合物

    公开(公告)号：US5011883A

    公开(公告)日：1991-04-30

    申请号：US476192

    申请日：1990-02-07

    申请人： Igor Aksman

    发明人： Igor Aksman

    IPC分类号： C08F299/02 ,  C08F2/24 ,  C08F290/00 ,  C08L21/02 ,  C08L67/08 ,  C09D129/04 ,  C09D157/00

    CPC分类号： C09D129/04 ,  C09D157/00 ,  C08L67/08

    摘要： Stabilized aqueous polymer latex compositions comprising: (A) a polymeric latex particle; (B) a protective colloid; and (C) a polyoxyalkylene-containing alkyd resin which is the reaction product of (i) at least one polyoxyalkylene, (ii) at least one polyol; (iii) at least one polycarboxylic acid anhydride; and (iv) at least one monocarboxylic acid are disclosed. Also detailed is a method of producing such a stabilized polymer latex composition.

    Method for preparing hollow latexes
    96.
    发明授权
    Method for preparing hollow latexes 失效
    空心胶乳的制备方法

    公开(公告)号：US4973670A

    公开(公告)日：1990-11-27

    申请号：US441006

    申请日：1989-11-22

    申请人： Charles J. McDonald ,  Yohannes Chonde ,  William E. Cohrs ,  Dalton C. MacWilliams

    发明人： Charles J. McDonald ,  Yohannes Chonde ,  William E. Cohrs ,  Dalton C. MacWilliams

    IPC分类号： C08F2/24 ,  B01J13/14 ,  B29B20060101 ,  C08C20060101 ,  C08F2/22 ,  C08F2/38 ,  C08F2/44 ,  C08F291/00 ,  C08J9/20 ,  C09D7/00 ,  C09D201/00 ,  D21H19/42

    CPC分类号： B01J13/14 ,  C08F291/00 ,  Y10T428/2982 ,  Y10T428/2987 ,  Y10T428/2998

    摘要： The present invention provides for a process for preparing hollow polymer latexes by a one stage emulsion polymerization. The first step invloves introducing an effective amount of a first charge of a organic phase to an aqueous phase. The first charge of the organic phase comprises monomer which is vertually insoluble in the aqeuous phase and an inert-nonpolymerizable hydrocarbon. The polymer formed from polymerizing the monomer is virtually insoluble in the hydrocarbon, the hydrocarbon is virtually insoluble in the aqueous phase and the monomer is miscible with the hydrocarbon. The monomer is polymerized to produce a low molecular weight polymer such that the low molecular weight polymer will phase separate from the organic phase and conentrates at the surface of the introduced organic phase forming a low molecular weight polymer phase. The second step involves introducing a second charge of the organic phase to the aqeuous phase, wherein the second charge of the organic phase comprises a crosslinking monomer. The crosslinking monomer is polymerized with the low molecular weight polymer to produce a hollow polymer latex particle.

    摘要翻译： 本发明提供了通过一步乳液聚合制备中空聚合物胶乳的方法。 第一步是引入有效量的有机相的有效量至水相。 有机相的第一次装料包括在水性相中不可溶的单体和惰性不可聚合的烃。 通过聚合单体形成的聚合物实际上不溶于烃，烃基本上不溶于水相，并且单体可与烃混溶。 将单体聚合以产生低分子量聚合物，使得低分子量聚合物将与有机相相分离并在导入的有机相的表面上凝聚，形成低分子量聚合物相。 第二步涉及将有机相的第二次电荷引入至酸性相，其中有机相的第二电荷包含交联单体。 交联单体与低分子量聚合物聚合以产生中空聚合物胶乳颗粒。

    Method for providing improved colloidal stability and polyvinyl chloride using a hot charge polymerization procedure with emulsifier package
    98.
    发明授权
    Method for providing improved colloidal stability and polyvinyl chloride using a hot charge polymerization procedure with emulsifier package 失效
    使用具有乳化剂包装的热电荷聚合方法提供改进的胶体稳定性和聚氯乙烯的方法

    公开(公告)号：US4957983A

    公开(公告)日：1990-09-18

    申请号：US362627

    申请日：1989-06-07

    申请人： Roman B. Hawrylko ,  Richard A. Widdifield

    发明人： Roman B. Hawrylko ,  Richard A. Widdifield

    IPC分类号： C08F2/20 ,  C08F2/22 ,  C08F2/24 ,  C08F14/00 ,  C08F14/06

    CPC分类号： C08F14/06 ,  Y02P20/52

    摘要： A method for polymerizing polyvinyl chloride and polyvinyl chloride copolymers is provided in which a monomer slurry is formed by adding the monomers and water (hot or cold) in the reaction vessel, and the slurry is brought to reaction temperature. After a time delay of 0 to 15 minutes, an emulsifier package is added, and after a further time delay of 0 to 15 minutes, a catalyst emulsion is added. The emulsifier package comprises a primary emulsifier which is partially saponified polyvinyl alcohol having a degree of saponification between about 60 and about 90 mole percent and a solubility in methanol index at 55.degree. C. in a range of up to about 60 percent. A secondary emulsifier is included in the emulsifier package which is a preferably cellulosic type emulsifier. Preferably an additional emulsifier is added which is a hydrolyzed polyvinyl acetate having a degree of hydrolysis of at least 68 percent. The polymerization product has good bulk density and porosity parameters. Resins produced from this product have low fisheye characteristics.