Polymer scale preventive agent
    5.
    发明公开
    Polymer scale preventive agent 失效
    高分子防垢剂

    公开(公告)号:EP0574155A1

    公开(公告)日:1993-12-15

    申请号:EP93304001.6

    申请日:1993-05-24

    IPC分类号: C08F2/00 C08F14/06

    CPC分类号: C08F2/004

    摘要: A polymer scale preventive agent for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising (A) a pyrogallol-acetone resin, and (B) at least one member selected from the group consisting of water-soluble polymeric compounds, colloidal silicas and alkali metal silicates. When a coating comprising the polymer scale preventive agent is formed on inner wall surfaces of a polymerization vessel and the polymerization is carried out by use of the vessel, deposition of polymer scale can be effectively prevented not only in the areas in the liquid phase inside the vessel but also in the vicinity of the interface between the gas phase and the liquid phase in the vessel. The polymeric product thus obtained can then be processed into sheets or other formed products which have few fish eyes and low initial coloration.

    摘要翻译: 一种用于聚合具有烯键式不饱和双键的单体的聚合物垢防止剂,其包含(A)连苯三酚 - 丙酮树脂和(B)至少一种选自水溶性聚合物,胶体 二氧化硅和碱金属硅酸盐。 当在聚合容器的内壁表面上形成包含聚合物垢防止剂的涂层并且通过使用该容器进行聚合时,不仅可以有效地防止聚合物垢的沉积, 而且也在容器中的气相和液相之间的界面附近。 然后可将由此获得的聚合物产品加工成具有少量鱼眼和低初始着色的片材或其他成型产品。

    Polymer scale preventive agent, polymerization vessel effective in preventing polymer scale deposition, and process of producing polymer using said vessel
    6.
    发明公开
    Polymer scale preventive agent, polymerization vessel effective in preventing polymer scale deposition, and process of producing polymer using said vessel 失效
    装置,用于防止Polymerverkrustung,其中避免结垢的聚合容器中,并用于处理聚合物的制备通过使用该容器。

    公开(公告)号:EP0538801A1

    公开(公告)日:1993-04-28

    申请号:EP92117939.6

    申请日:1992-10-20

    IPC分类号: C08F2/00

    CPC分类号: C08F2/004

    摘要: A polymer scale preventive agent for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising a condensation product obtained by condensing:

    (A) an aromatic amine compound, and
    (B) an aromatic nitro compound
    in an organic solvent-based medium. This agent is used for forming a coating on the inner wall, etc. of a polymerization vessel. Such a vessel is effective in preventing polymer scale deposition not only on the areas in the liquid phase but also in the vicinity of the interface between the gas and liquid phases in the polymerization vessel and useful in producing a polymer that shows very few fish eyes and good whiteness when formed into sheets or the like.

    摘要翻译: 在具有烯属不饱和双键的单体,包括获得的缩合产物聚合中使用的聚合物垢防止剂通过在基于有机溶剂的介质冷凝的芳香胺化合物(A)和(B)与芳族硝基化合物 , 此剂用于在该内壁上形成涂层等的聚合容器的。 所以搜索的容器是有效的,不仅在液相中的区域,但在聚合容器中的气相和液相之间的界面附近防止聚合物结垢沉积的和有用的在制备聚合物没有示出很少的鱼眼和 白度好当形成片材或类似物。

    Polymer scale preventive agent, polymerization vessel effective in preventing polymer scale deposition, and process of producing polymer using said vessel
    7.
    发明公开
    Polymer scale preventive agent, polymerization vessel effective in preventing polymer scale deposition, and process of producing polymer using said vessel 失效
    装置,用于防止聚合物的沉积,聚合反应器可以防止在其中聚合物沉积和过程,用于通过使用该反应器的聚合物的生产。

    公开(公告)号:EP0534434A1

    公开(公告)日:1993-03-31

    申请号:EP92116373.9

    申请日:1992-09-24

    IPC分类号: C08F2/00 C08K5/17

    CPC分类号: C08F2/004

    摘要: A polymer scale preventive agent for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising a condensation product of:

    (A) an aromatic amine compound, and
    (B) an aromatic hydroxyl compound condensate.
    This agent is used for forming a coating on the inner wall, etc. of a polymerization vessel. Such a vessel is effective in preventing polymer scale deposition and useful in producing a polymer that shows very few fish eyes and good whiteness when formed into sheets or the like.

    摘要翻译: 用于在具有烯属不饱和双键的单体的聚合中使用的聚合物垢防止剂,其包含的缩合产物:(A)芳胺化合物,和(B)与芳族羟基化合物的缩合物。 此剂用于在该内壁上形成涂层等的聚合容器的。 这种容器能有效地防止聚合物结垢沉积的和有用的在制备聚合物没有示出很少的鱼眼和白度好当形成片材或类似的。

    Polymer scale preventive agent, and polymerization vessel and method for preventing polymer scale deposition
    8.
    发明公开
    Polymer scale preventive agent, and polymerization vessel and method for preventing polymer scale deposition 失效
    装置,用于抑制聚合物垢,聚合反应器和方法的形成,用于抑制聚合物垢的形成。

    公开(公告)号:EP0475186A1

    公开(公告)日:1992-03-18

    申请号:EP91114355.0

    申请日:1991-08-27

    IPC分类号: C08F2/00 B01J19/00

    CPC分类号: C08F2/004

    摘要: A polymer scale preventive agent for use in polymerization of vinyl chloride monomer or a monomer mixture containing vinyl chloride monomer as a major component, comprising:

    (A) a naphthoquinone natural dye and
    (B) a polyvinyl alcohol with a saponification degree of at least 50 mol%. The polymer scale preventive agent is formed as coating on the inner wall, etc. of a polymerization vessel. Deposition of polymer scale can be always effectively prevented. Polymers with a high whiteness can be produced, and products formed from the polymer have only a small number of fish eyes.

    摘要翻译: 在氯乙烯单体或单体混合物含氯乙烯单体为主要成分的聚合中使用的聚合物垢防止剂,其包含:(A)一种萘醌天然染料和(B)具有至少50的皂化度的聚乙烯醇 摩尔%。 聚合物垢预防剂被形成为涂覆在内壁等的聚合容器的。 聚合物垢的沉积能够有效地始终防止。 聚合物与高白度可以通过,并且从聚合物形成的产品具有只有少数鱼眼。

    Method of preventing polymer scale deposition
    9.
    发明公开
    Method of preventing polymer scale deposition 失效
    防止聚合物结垢的方法

    公开(公告)号:EP0397009A3

    公开(公告)日:1991-06-12

    申请号:EP90108250.3

    申请日:1990-04-30

    IPC分类号: C08F2/00

    CPC分类号: C08F2/004

    摘要: A method of preventing polymer scale deposition in a polymerization vessel during polymerization of a monomer having an ethylenically double bond, wherein said polymerization is carried out in a polymerization vessel of which the inner wall has a coating comprising a reac­tion product of a tannin and an acid halide. Polymer scale deposition on the inner wall, etc. of the polymerization vessel can be effectively prevented. The preventive agent used has neither risk of produced polymer being colored nor toxicity.

    摘要翻译: 一种在具有烯属双键的单体聚合期间防止聚合物结垢在聚合反应器中沉积的方法,其中所述聚合反应在聚合容器中进行,所述聚合容器的内壁具有包含鞣酸和酸的反应产物的涂层 卤化物。 可以有效地防止聚合物沉积在聚合反应器的内壁上等。 所使用的预防剂既没有产生聚合物的危险,也没有毒性。

    Method of preventing polymer-scale formation
    10.
    发明公开
    Method of preventing polymer-scale formation 失效
    防止聚合物形成的方法

    公开(公告)号:EP0320227A3

    公开(公告)日:1990-10-10

    申请号:EP88311573.5

    申请日:1988-12-07

    IPC分类号: C08F2/00

    CPC分类号: C08F2/004

    摘要: A method of preventing polymer scales from sticking in a polymerization vessel during the polymerization of a monomer having an ethylenically double bond, wherein said polymerization is carried out in a polymerization vessel of which the inner wall and other parts with which said monomer comes into contact during polymerization are previously first coated with (a) a coating solution comprising a cationic dye and the resulting coating is then coated with (b) a coating solution comprising at least one component selected from the group consisting of anionic polymeric compounds, amphoteric polymeric compounds and hydroxyl group-containing organic compounds. Polymer scale formation can be effectively prevented.