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    PROCESS FOR FORMING A COATING HAVING A METALLIC FINISH
    2.
    发明专利
    PROCESS FOR FORMING A COATING HAVING A METALLIC FINISH 未知

    公开(公告)号：CA1076064A

    公开(公告)日：1980-04-22

    申请号：CA268102

    申请日：1976-12-17

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OZAWA HIROSHI ,  TORII YOSHINORI ,  OKITA YASUO ,  KOBAYASHI NOBUKI ,  ISHIKAWA KOJI

    IPC: B05D1/00 ,  B05D1/38 ,  B05D5/06 ,  B05D7/00 ,  C08L33/06 ,  C09D5/38 ,  C09D133/06 ,  C25D15/00

    Abstract: A process for forming a coating having a metallic-finish, which . comprises (I) coating an undercoat paint (A) by electrodeposition on an article to be coated, (II) coating a water-thinnable intermediate coat paint (B) containing metallic scales on the coated surface of the undercoat before the undercoat is baked, (III) baking the undercoat and the intermediate coat, (IV) coating a powdery top coat paint (C) on the baked surface of the intermediate coat, and then (V) baking the top coat, said intermediate coat paint (B) containing a solid resin component, at least 60% by weight of the entire resin solids consisting of a (meth)acrylate ester copolymer containing at least 0.1 equivalent, per 1,000 g of the solids content of the copolymer, of carboxyl or carboxyl ion groups and having a number average molecular weight of at least 3,000, and said top coat paint (C) containing a (meth)acrylate ester copolymer containing a glycidyl or .beta.-methylglycidyl group and a polycarboxylic acid. By this process metallic-finish coatings of superior quality and vividness which are easier to repair than known coatings are obtained.

    PROCESS FOR FORMING METALLIC FINISH COATINGS
    3.
    发明专利
    PROCESS FOR FORMING METALLIC FINISH COATINGS 未知

    公开(公告)号：CA1090211A

    公开(公告)日：1980-11-25

    申请号：CA270626

    申请日：1977-01-28

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OZAWA HIROSHI ,  TORII YOSHINORI ,  KOBAYASHI NOBUKI ,  ISHIKAWA KOJI

    IPC: B05D1/38 ,  B05D5/06 ,  B05D7/00 ,  B32B7/10

    Abstract: The invention is a process for forming a coating with a metallic finish, which comprises: (1) a first step of coating an article with (A) a water-thinnable paint comprising (a) a cross-linkable (meth)acrylate ester copolymer or a mixture of the (meth)acrylate ester copolymers containing at least 0.1 equivalent per 1,000 g of resin solids, of a carboxyl or carboxyl ion group and a group capable of undergoing a ring-opening reaction with the carboxyl or carboxyl ion group upon heating, both of said groups being contained in the same or different copolymers, and having a number average molecular weight of at least 3,000 and (b) metallic scales, and baking the coated paint to form a coating containing the metallic scales; and (2) a second step of coating (B) a powder paint comprising a (meth)acrylate ester copolymer having a glycidyl or .beta.-methylglycidyl group and a polycarboxylic acid on the scale-containing coating obtained in the first step, and baking the coated paint to form a protective coating for the scale-containing coating. The metallic finish coating is easy to repair, has good durability and colour vividness, and no substantial air pollution occurs during the coating process.

    PRODUCTION OF HIGHHPOLYMER COAGULANT
    9.
    发明专利
    PRODUCTION OF HIGHHPOLYMER COAGULANT 失效

    公开(公告)号：JPS5461285A

    公开(公告)日：1979-05-17

    申请号：JP12758377

    申请日：1977-10-26

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： FURUKAWA MANABU ,  TORII YOSHINORI ,  ITOU YOSHIAKI ,  SAITOU JIYUN

    IPC: B01D21/01 ,  C08F6/00 ,  C08F6/06 ,  C08F20/00 ,  C08F20/52 ,  C08F220/00 ,  C08F220/56

    Abstract: PURPOSE:Acrylamide and 2-acrylamide-2-methylpropanesulfonate salt are copolymerized in an aqueous solution, treated with heat under specific conditions and then dried to produce said high-polymer coagulant with good solubility in water. CONSTITUTION:A monomer aqueous solution of 2-40wt% concentration consisting of 55-98wt% of acrylamide and 45-2wt% of 2-acrylamide-2-methyl-propanesulfonate is subjected to solution polymerization in the presence of a radical polymerization initiator at -10-105 deg.C. The resulting copolymer is heat treated at a temperature higher than that of polymerization for 15 min to 5 hr under moisture conditions from the moisture content at the completion of the polymerization to about 20wt% water content and then dried by removing water at 60-150 deg.C for 30min to 5 hr to a level of 5-15wt% water content.

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