Rust preventive composition
    1.
    发明授权
    Rust preventive composition 有权
    防锈组成

    公开(公告)号:US06194033B1

    公开(公告)日:2001-02-27

    申请号:US09458993

    申请日:1999-12-10

    IPC分类号: B05D302

    CPC分类号: C09D5/08 C09D5/086

    摘要: Disclosed is a rust-preventive composition comprising (A) an aromatic compound i) containing a group selected from the group consisting of an —N═N— group, a >C═N— group, a >C═O group and an —N═O group and ii) having an absorption band in a visible region of from 530 nm to 750 nm; (B) a colloidal silica; (C) a film-forming polymeric compound containing in one molecule a group selected from the group consisting of an —OH group and a —COOH group; and (D) an organic solvent. This composition, having been coated on metal surfaces, provides a sufficient corrosion resistance without making any chromating treatment.

    摘要翻译: 公开了一种防锈组合物,其包含(A)含有选自-N = N-基,> C = N-基,a> C = O基和 - N = O基团,和ii)在530nm至750nm的可见光区域具有吸收带; (B)胶体二氧化硅; (C)在一分子中含有选自-OH基和-COOH基的基团的成膜性高分子化合物; 和(D)有机溶剂。 已经涂覆在金属表面上的这种组合物在不进行任何铬酸盐处理的情况下提供了足够的耐腐蚀性。

    Process of producing vinyl chloride polymer by using condensation
product of dimer of 2,3-dihydroxynaphthalene and formaldehyde
    3.
    发明授权
    Process of producing vinyl chloride polymer by using condensation product of dimer of 2,3-dihydroxynaphthalene and formaldehyde 失效
    通过使用2,3-二羟基萘和甲醛的二聚体的缩合产物生产氯乙烯聚合物的方法

    公开(公告)号:US06121390A

    公开(公告)日:2000-09-19

    申请号:US019803

    申请日:1998-02-06

    CPC分类号: C08F2/004

    摘要: There is provided a polymer scale deposition preventive agent, comprising an alkaline solution of a condensation product having a molecular weight of 500 to 1,000,000 obtained by condensing a dimer compound of 2,3-dihydroxynaphthalene with formaldehyde. By polymerizing vinyl chloride or a monomer mixture containing vinyl chloride in a polymerization vessel wherein a coating film made of said polymer scale deposition preventive agent has been formed on the inner wall surface and the like, polymer scale is effectively prevented from depositing not only on an agitation apparatus but also on areas near the interface between a gas phase and a liquid phase, which prevention of the polymer scale deposition is conventionally difficult. Thus, a vinyl chloride polymer can be obtained which contains colored foreign matters, fish eyes, etc. in small amounts and is small in initial discoloration and is good in quality.

    摘要翻译: 提供了一种聚合物垢沉积防止剂,其包含通过将2,3-二羟基萘的二聚体与甲醛缩合得到的分子量为500至1,000,000的缩合产物的碱性溶液。 通过在聚合容器中聚合氯乙烯或含有氯乙烯的单体混合物,其中在内壁表面等上形成由所述聚合物垢沉积防止剂制成的涂膜,有效地防止了聚合物垢不仅沉积在 搅拌装置,而且在气相和液相之间的界面附近的区域,传统上难以防止聚合物垢沉积。 因此,可以获得少量含有有色异物,鱼眼等的氯乙烯聚合物,并且初始变色小,质量好。

    Polymerization of ethylenic monomer with scale preventive agent
    4.
    发明授权
    Polymerization of ethylenic monomer with scale preventive agent 失效
    乙烯单体与防垢剂的聚合

    公开(公告)号:US5616660A

    公开(公告)日:1997-04-01

    申请号:US672371

    申请日:1996-06-25

    IPC分类号: C08F2/00 C08F2/24 C08F2/20

    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 an alkaline solution containing (A) a condensation product of (A-1) a hydroxynaphthalene compound and (A-2) an aldehyde compound, and (B) an inorganic colloid. 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 in the liquid-phase region but also in the vicinity of the interface between the gas and liquid phases in the 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: 包含含有(A)(A-1)羟基萘化合物和(A-2)醛化合物的缩合物的碱性溶液的含有乙烯性不饱和双键的单体聚合的聚合物防垢剂,以及 (B)无机胶体。 该试剂用于在聚合容器的内壁等上形成涂层。 这样的容器不仅在液相区域中,而且在容器中的气相和液相之间的界面附近都有效地防止聚合物垢沉积,并且可用于制备显示非常少的鱼眼的聚合物, 当形成片材等时,白度好。

    Process to prevent scale adhesion using the condensation product of
aromatic amine and aromatic tetracarboxylic acid anhydride
    5.
    发明授权
    Process to prevent scale adhesion using the condensation product of aromatic amine and aromatic tetracarboxylic acid anhydride 失效
    使用芳香族胺和芳香族四羧酸酐的缩合物防止结垢的方法

    公开(公告)号:US5484856A

    公开(公告)日:1996-01-16

    申请号:US261297

    申请日:1994-06-16

    CPC分类号: C08F2/004

    摘要: A polymer scale preventive process for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising an alkaline solution containing a condensation product of (A) an aromatic amine compound having at least two amino groups and (B) an aromatic tetracarboxylic acid anhydride. This process 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: 一种用于聚合具有烯键式不饱和双键的单体的聚合物垢预防方法,包括含有(A)具有至少两个氨基的芳族胺化合物和(B)芳族四羧酸酐的缩合产物的碱性溶液 。 该方法用于在聚合容器的内壁等上形成涂层。 这样的容器在防止聚合物垢沉积方面是有效的,并且可用于制备当形成片材等时显示非常少的鱼眼和良好的白度的聚合物。

    Process for preventing polymer scale using an alkaline solution of a
condensation product of an aromatic compound having at least two amino
groups and an aromatic bisester anhydride
    6.
    发明授权
    Process for preventing polymer scale using an alkaline solution of a condensation product of an aromatic compound having at least two amino groups and an aromatic bisester anhydride 失效
    使用具有至少两个氨基的芳族化合物和芳族双酯酸酐的缩合产物的碱性溶液来防止聚合物垢的方法

    公开(公告)号:US5397849A

    公开(公告)日:1995-03-14

    申请号:US282659

    申请日:1994-07-29

    IPC分类号: C08F2/00 C08F2/20 C08F2/24

    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 an alkaline solution containing a condensation product of (A) an aromatic compound having at least two amino groups and (B) an aromatic bis-ester anhydride. 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: 一种用于聚合具有烯属不饱和双键的单体的聚合物垢防止剂,其包含含有(A)具有至少两个氨基的芳族化合物和(B)芳族双酯酸酐的缩合产物的碱性溶液 。 该试剂用于在聚合容器的内壁等上形成涂层。 这样的容器在防止聚合物垢沉积方面是有效的,并且可用于制备当形成片材等时显示非常少的鱼眼和良好的白度的聚合物。

    Polymer scale preventive agent
    7.
    发明授权
    Polymer scale preventive agent 失效
    聚合物防垢剂

    公开(公告)号:US5393857A

    公开(公告)日:1995-02-28

    申请号:US205385

    申请日:1994-03-04

    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) hydrazine and (B) a quinone compound. Where the monomer is polymerized in a polymerization vessel having, on its inner wall surface, a coating comprising the condensation product, deposition of polymer scale can be effectively prevented not only on the liquid phase part in the polymerization vessel but also near the interface between the gas phase part and the liquid phase part, so that the thus obtained polymer can provide a molded item having few fish eyes and low in initial coloration, when the polymer is molded into a sheet or the like.

    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防垢剂,其包含(A)肼和(B)醌化合物的缩合产物。 当单体在其内壁表面上具有包含缩合产物的涂层的聚合容器中聚合时,不仅可以有效地防止聚合物垢的沉积,而且可以有效地防止在聚合容器中的液相部分上, 气相部分和液相部分,从而由此获得的聚合物可以提供一种具有少量鱼眼和初始着色低的成型品,当聚合物被模塑成片状或类似物时。

    Polymer scale preventive agent, polymerization vessel effective in
preventing polymer scale deposition, and process of producing polymer
using said vessel
    8.
    发明授权
    Polymer scale preventive agent, polymerization vessel effective in preventing polymer scale deposition, and process of producing polymer using said vessel 失效
    聚合物防垢剂,有效防止聚合物垢沉积的聚合容器,以及使用所述容器制备聚合物的方法

    公开(公告)号:US5364466A

    公开(公告)日:1994-11-15

    申请号:US865265

    申请日:1992-04-08

    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 nitrogen-containing organic compound having at least five continuous conjugated .pi. bonds, (B) an anionic organic compound having at least one group selected from the group consisting of the sulfonic acid group and the carboxyl group and having at least five continuous conjugated .pi. bonds, and (C) a water-soluble basic polysaccharide. The agent is used for forming a coating on the inner wall, etc. of a polymerization vessel. Deposition of polymer scale can be effectively prevented not only in the liquid phase area but also in the vicinity of the interface between the gas and liquid phases. Products formed from polymer obtained have very few fish eyes.

    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防垢剂,其包含(A)具有至少五个连续共轭π键的含氮有机化合物,(B)具有至少一个基团的阴离子有机化合物 选自由磺酸基和羧基组成的组,并且具有至少五个连续的共轭π键,和(C)水溶性碱性多糖。 该试剂用于在聚合容器的内壁等上形成涂层。 可以有效地防止聚合物垢的沉积,不仅在液相区域中,而且在气相和液相之间的界面附近。 由获得的聚合物形成的产品鱼眼非常少。

    Method of preventing polymer scale formation

    公开(公告)号:US5034478A

    公开(公告)日:1991-07-23

    申请号:US446699

    申请日:1989-12-06

    IPC分类号: C08F2/00

    CPC分类号: C08F2/004

    摘要: A method of preventing polymer scale deposition in polymerization of a monomer having an ethylenically double bond, wherein said polymerization is carried out in a polymerization vessel in which its inner wall surface has been previously coated with a coating solution comprising:(A) a condensate of a phenolic hydroxy group-containing compound,(B) at least one member selected from the group consisting of metal compounds and inorganic colloids, and(C) at least one member selected from the group consisting of dyes and pigments. This method makes it possible to prevent polymer scale deposition regardless of polymerization conditions such as the kind of monomers, the type of polymerization vessel, etc.