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8 条记录 (耗时 0.016 秒)

    Post bulk polymerization process for polyvinyl halide and composition thereof
    3.
    发明授权
    Post bulk polymerization process for polyvinyl halide and composition thereof 失效

    公开(公告)号：US4137216A

    公开(公告)日：1979-01-30

    申请号：US811215

    申请日：1977-06-29

    申请人： Anthony L. Lemper ,  Gilbert Witschard ,  Victor A. Pattison

    发明人： Anthony L. Lemper ,  Gilbert Witschard ,  Victor A. Pattison

    IPC分类号： C08F255/00 ,  C08F285/00 ,  C08K9/06 ,  C08F255/06 ,  C08K9/00

    CPC分类号： C08F285/00 ,  C08F255/00

    摘要： An improved polyvinyl halide or a vinyl halide copolymer containing up to 50 percent of a comonomer can be obtained by post polymerizing in a single stage or two-stage bulk process in contact with a base polymer, the same or different monomer as the monomer used to form the base polymer. Compositions produced by the process of the invention are useful in making films, coated fabrics and molded objects. The liquid phase post polymerization process of the invention is applicable to base polymers in powder form prepared by emulsion, suspension and bulk polymerization processes. The base polymer can be present in a polymerization mixture in which only a partial amount of monomer has been converted to base polymer such as in a two-stage polymerization process or the base polymer can be used in dry, solid form. Polymers of the invention have improved bulk density and reduced plasticizer uptake and can be used to prepare fabric coatings. Copolymers prepared by the novel post-polymerization process of the invention which show increased impact strength in addition to improved bulk density and reduced plasticizer uptake are useful in the preparation of molding compounds. In the bulk polymerization process of the invention, the addition of the same monomer or monomers or a different monomer or monomers subsequent to the partial conversion by a two-stage bulk process of polymerization of the vinyl halide monomer or monomers or vinyl halide monomer and comonomer, results in higher yield than can be obtained in the same reaction vessel as compared with a usual two-stage bulk polymerization process. In the two-stage bulk polymerization process of the invention, optional addition of small amounts of a hydrocarbon rubber dissolved or dispersed in the monomer to the second reaction stage effectively prevents reactor fouling during polymerization. Optional second stage addition of a small amount of a surfactant beneficially diminishes the porosity of the polymer product. A small particle size product can be obtained by incorporating in the first stage of a two-stage bulk polymerization process either an inert finely divided additive, a surfactant, a mixture thereof, or a polyolefin.

    Post bulk polymerization process for polyvinyl halide and composition thereof
    4.
    发明授权
    Post bulk polymerization process for polyvinyl halide and composition thereof 失效
    用于聚卤乙烯的本体聚合方法及其组合物

    公开(公告)号：US4155899A

    公开(公告)日：1979-05-22

    申请号：US711672

    申请日：1976-08-04

    申请人： Anthony L. Lemper ,  Gilbert Witschard ,  Victor A. Pattison

    发明人： Anthony L. Lemper ,  Gilbert Witschard ,  Victor A. Pattison

    IPC分类号： C08F14/00 ,  C08F2/00 ,  C08F2/02 ,  C08F2/44 ,  C08F214/00 ,  C08F255/00 ,  C08F255/02 ,  C08F255/04 ,  C08F265/00

    CPC分类号： C08F255/00 ,  G05B2219/39178 ,  G05B2219/41021

    摘要： An improved polyvinyl halide or a polyvinyl halide copolymer containing up to 50 percent of a comonomer can be obtained by post polymerizing in a single stage or two-stage bulk process in contact with a base polymer, the same or different monomer as the monomer used to form the base polymer. Compositions produced by the process of the invention are useful in making films, coated fabrics and molded objects. The liquid phase post polymerization process of the invention is applicable to base polymers in powder form prepared by emulsion, suspension and bulk polymerization processes. The base polymer can be present in a polymerization mixture in which only a partial amount of monomer has been converted to base polymer such as in a two-stage polymerization process or the base polymer can be used in dry, solid form. Polymers of the invention have improved bulk density and reduced plasticizer uptake and can be used to prepare fabric coatings. Copolymers prepared by the novel post-polymerization process of the invention which show increased impact strength in addition to improved bulk density and reduced plasticizer uptake are useful in the preparation of molding compounds. In the bulk polymerization process of the invention, the addition of the same monomer or monomers or a different monomer or monomers subsequent to the partial conversion by a two-stage bulk process of polymerization of the vinyl halide monomer or monomers or vinyl halide monomer and comonomer, results in higher yield than can be obtained in the same reaction vessel as compred with a usual two-stage bulk polymerization process. In the two-stage bulk polymerization process of the invention, the use of small amounts of a hydrocarbon rubber dissolved or dispersed in the monomer effectively prevents reactor fouling during polymerization.Where desired, a small particle size product can be obtained by incorporating in the first stage of a two-stage bulk polymerization process either an inert finely divided additive, a surfactant, a mixture thereof, or a polyolefin.

    摘要翻译： 含有高达50％的共聚单体的改进的聚卤乙烯或聚卤乙烯共聚物可以通过在与单体相同或不同的单体接触的单阶段或两阶段本体方法中进行后聚合来获得， 形成基础聚合物。 通过本发明的方法生产的组合物可用于制备薄膜，涂布织物和成型物体。 本发明的液相后聚合方法适用于通过乳液，悬浮液和本体聚合方法制备的粉末形式的基础聚合物。 基础聚合物可以存在于其中只有部分量的单体已经转化为基础聚合物的聚合混合物中，例如在两阶段聚合方法中，或者基础聚合物可以干燥，固体形式使用。 本发明的聚合物具有改善的堆积密度和降低的增塑剂吸收并且可用于制备织物涂层。 通过本发明的新型后聚合方法制备的共聚物，除了改善体积密度和降低增塑剂吸收之外，还显示增加的冲击强度，可用于制备模塑料。 在本发明的本体聚合方法中，通过二级本体聚合乙烯基卤单体或单体或乙烯基卤单体和共聚单体的部分转化后加入相同的单体或单体或不同的单体或单体 导致比通常的两阶段本体聚合方法所得到的相同反应容器中的产率更高。 在本发明的两阶段本体聚合方法中，使用溶解或分散在单体中的少量烃橡胶有效地防止聚合反应器中的结垢。

    Method of obtaining small particle size polymers and copolymers of vinyl chloride by bulk polymerization
    6.
    发明授权
    Method of obtaining small particle size polymers and copolymers of vinyl chloride by bulk polymerization 失效
    通过本体聚合获得小粒径聚合物和氯乙烯共聚物的方法

    公开(公告)号：US4029863A

    公开(公告)日：1977-06-14

    申请号：US597617

    申请日：1975-07-21

    申请人： Anthony L. Lemper

    发明人： Anthony L. Lemper

    IPC分类号： C08F14/06 ,  C08F2/02

    CPC分类号： C08F14/06 ,  Y10S526/909

    摘要： In a process of bulk vinyl chloride polymerization involving a two stage stationary reaction zone polymerization wherein high speed agitation is used during the first stage and slow speed agitation is used in the second stage, the polymerization in the first stage is conducted in contact with an organic or inorganic, inert, fine particle size material, solid at least at reaction temperatures and insoluble in the monomer or monomers used, or an anionic, cationic, or nonionic surfactant, or mixtures thereof. By the present polymerization method using economical conventional agitation equipment, small particle size polyvinyl chloride homopolymers or copolymers are produced which are useful as extender resins in plastisols.

    摘要翻译： 在涉及两阶段固定反应区聚合的本体氯乙烯聚合过程中，其中在第一阶段使用高速搅拌，并且在第二阶段使用慢速搅拌，第一阶段中的聚合与有机 或无机，惰性，细粒度的材料，至少在反应温度下为固体，并且不溶于所使用的单体或单体，或阴离子，阳离子或非离子表面活性剂或其混合物。 通过使用经济的常规搅拌设备的本发明的聚合方法，生产可用作增塑溶胶中的增量树脂的小粒径聚氯乙烯均聚物或共聚物。

    Composition of and method of obtaining small particle size polymers and copolymers of vinyl chloride having a fused surface
    8.
    发明授权
    Composition of and method of obtaining small particle size polymers and copolymers of vinyl chloride having a fused surface 失效
    获得具有熔融表面的氯乙烯的小粒径聚合物和共聚物的组成和方法

    公开(公告)号：US3933771A

    公开(公告)日：1976-01-20

    申请号：US482111

    申请日：1974-06-24

    申请人： David W. Eastman ,  Anthony L. Lemper ,  Victor A. Pattison ,  George C. Hopkins ,  Henry Kahn ,  Jack L. Nickels

    发明人： David W. Eastman ,  Anthony L. Lemper ,  Victor A. Pattison ,  George C. Hopkins ,  Henry Kahn ,  Jack L. Nickels

    IPC分类号： C08F14/06 ,  C08F3/30 ,  C08F15/06

    CPC分类号： C08F14/06

    摘要： Polyvinyl chloride and polyvinyl chloride containing up to 20 percent of a comonomer can be obtained in the form of small particle size spherical glassy surface particles by a process of bulk polymerization of monomer or monomers comprising two stage polymerization wherein high shear agitation is used during the first stage and low shear agitation is used in the second stage. To obtain a reduction in particle size, the polymerization in the first stage is conducted in contact with at least one of (A) an additive comprising an organic or inorganic, inert, fine particle size material solid at least at reaction temperatures, and insoluble in said monomer or monomers used, and (B) a cationic, anionic, or non-ionic surface active agent. A portion of the polymerization in a second stage reaction is conducted at temperature and pressure sufficient to render the surface of the individual particles or agglomerates glassy and fused. The resulting polymers and copolymers produced have superior plastisol viscosity stability and fusion characteristics and excellent powder flow properties as compared to those of the prior art.

    摘要翻译： 含有高达20％共聚单体的聚氯乙烯和聚氯乙烯可以通过单体或单体的本体聚合方法以小粒径的球形玻璃状表面颗粒的形式获得，所述单体或单体包括两阶段聚合，其中在第一阶段使用高剪切搅拌 在第二阶段使用阶段和低剪切搅拌。 为了获得粒度的降低，第一阶段的聚合至少在反应温度下与（A）包含有机或无机，惰性，细粒度的材料固体的添加剂中的至少一种进行接触，并且不溶于 所述单体或单体，和（B）阳离子，阴离子或非离子表面活性剂。 在第二阶段反应中的一部分聚合在足以使单个颗粒或聚集体的表面玻璃化并熔融的温度和压力下进行。 生产的所得聚合物和共聚物与现有技术相比具有优异的增塑溶胶粘度稳定性和熔融特性以及优异的粉末流动性能。