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KR950704538A - ORGANIC-COMPOSITE-COATED STEEL SHEET EXCELLENT IN RESISTANCE TO RUSTING OF ADVENTITIOUS ORIGIN - Google Patents

ORGANIC-COMPOSITE-COATED STEEL SHEET EXCELLENT IN RESISTANCE TO RUSTING OF ADVENTITIOUS ORIGIN Download PDF

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KR950704538A
KR950704538A KR1019950701797A KR19950701797A KR950704538A KR 950704538 A KR950704538 A KR 950704538A KR 1019950701797 A KR1019950701797 A KR 1019950701797A KR 19950701797 A KR19950701797 A KR 19950701797A KR 950704538 A KR950704538 A KR 950704538A
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chromate
steel sheet
coated steel
corrosion resistance
composite coated
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KR1019950701797A
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KR100280604B1 (en
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나토오 요시미
다카히로 구보타
다카시 이시야마
마사아키 야마시타
야스히코 하루타
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미요시 슌키치
닛폰 고칸 가부시키가이샤
원본미기재
간사이 페인트 가부시키가이샤
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Priority claimed from JP11359194A external-priority patent/JP3153706B2/en
Priority claimed from JP11359094A external-priority patent/JP3153705B2/en
Application filed by 미요시 슌키치, 닛폰 고칸 가부시키가이샤, 원본미기재, 간사이 페인트 가부시키가이샤 filed Critical 미요시 슌키치
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/51—One specific pretreatment, e.g. phosphatation, chromatation, in combination with one specific coating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C09D163/10—Epoxy resins modified by unsaturated compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/58—Epoxy resins
    • C08G18/584—Epoxy resins having nitrogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/024—Emulsion paints including aerosols characterised by the additives
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • C23C28/3225—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only with at least one zinc-based layer
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

본 발명의 목적은, 내부식성에 우수한 유기복합피복강판을 제공하는 것에 있다.An object of the present invention is to provide an organic composite coated steel sheet excellent in corrosion resistance.

본 발명의 유기복파복강판은 아연계 도금강판의 표면에 소정의 부착량의 크로메이트 피피막을 가지며, 그 크로메이트 피막의 상부에, 하기(ⅰ)~(ⅲ)의 성분을 함유한 막두께가 0.2~2.0㎕의 유기피막을 가진다. (ⅰ)에폭시 수지의 말단에 1개 이상의 염기성 질소원자와 2개이상의 1급 수산기를 부가한 기체수지 (ⅱ)1분자중에 3개 이상, 바람직하게는 4개이상, 보다 바람직하게는 6개이상의 이소시아네이트기를 가지는 다작용기 폴리이소시아네이트 화합물(특히 바람직하게는, 헥사메틸렌디이소시아네이트의 다작용체로부터 6작용기 폴리이소시아네이트 화합물) (ⅲ)기체수지와 다작용기 폴리이소시아네이트 화합물의 합계량에 대합 배합비(불휘발분의 중량비)가 하기 비율의 방청첨가제(기체수지+다작용기 폴리이소시아네이트 화합물)/방청첨가제=90/10~40/60방청첨가제로서는 난용성 크롬산염, 또는 배합비가 실리카/난용성 크롬산염=35/5~1/39인 실리카/난용성 크롬산염이 바람직하고, 유기피막을 구성하는 수지조성물과 방청첨가제와의 상승효과에 의해, 극히 우수한 내부식성을 얻는다.The organic laminated steel sheet of the present invention has a chromate coating film having a predetermined adhesion amount on the surface of the zinc-based plated steel sheet, and has a film thickness of 0.2 to 2.0 µl containing the following components on the chromate coating. It has an organic film of. (Iii) a gas resin having at least one basic nitrogen atom and at least two primary hydroxyl groups added to the terminal of the epoxy resin; (ii) three or more, preferably four or more, more preferably six or more Polyfunctional polyisocyanate compound having an isocyanate group (particularly preferably a 6-functional polyisocyanate compound from a polyfunctional of hexamethylene diisocyanate) (i) A compounding ratio (weight ratio of non-volatile content) The anticorrosive additive (gas resin + polyfunctional polyisocyanate compound) / antirust additive of the following ratio / 90 / 10-40 / 60 antirust additive is a poorly soluble chromate, or a compounding ratio of silica / poorly soluble chromate = 35/5 ~ Silica / poorly soluble chromate of 1/39 is preferred, and is extremely excellent due to the synergistic effect of the resin composition constituting the organic coating and the antirust additive. It gains corrosion resistance.

Description

내부식성에 우수한 유기복합피복강판(ORGANIC-COMPOSITE-COATED STEEL SHEET EXCELLENT IN RESISTANCE TO RUSTING OF ADVENTITOUS ORIGNIN)ORGANIC-COMPOSITE-COATED STEEL SHEET EXCELLENT IN RESISTANCE TO RUSTING OF ADVENTITOUS ORIGNIN

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명이 규정하는 특정 기체(基)수지와 다작용기 폴리이소시아네이트 화합물(이소포론디이소시아네이트계의 6 작용기 폴리이소시아네이트 화합물)로 이루어진 유기수지중에 난용성 크롬산염을 첨가한 경우의 유기수지/난용성 크롬산염의 배합비와 내부식성 시험(7 사이클후의 평가)과의 관계를 표시한 그래프.1 shows a specific gas defined by the present invention. Mixture Ratio and Corrosion Resistance Test of Organic Resin / Poorly Soluble Chromate When Addition of Soluble Chromate to Organic Resin Containing Resin and Polyfunctional Polyisocyanate Compound A graph showing the relationship between the evaluation after the cycle).

Claims (15)

아연계 도금강판의 표면에 금속크롬환산으로 부착량 10~20㎎/㎡의 크로메이트 피막을 가지며, 그 크로메이트 피막의 상부에, 하기(ⅰ)~(ⅲ)의 성분을 함유하는 막두께가 0.2~2.0㎕인 유기피막을 가지는 내부식성에 우수한 유기복합피복강판.It has the chromate coating of 10-20 mg / m <2> of adhesion amount in conversion of metal chromium on the surface of a zinc-based galvanized steel sheet, and the film thickness which contains the following components (v)-(v) in the upper part of this chromate coating is 0.2-2.0. An organic composite coated steel sheet excellent in corrosion resistance having an organic coating of μl. (ⅰ)에폭시 수지 말단에 1개이상의 염기성 질소원자와 2개이상의 1급 수산기를 부가한 기체수지 (ⅱ)1분자 중에 3개 이상의 이소시아네이트기를 가지는 다작용기 폴리이소시아네이트 화합물 (ⅲ)기체수지와 다작용기 폴리이소시아네이트 화합물의 합계량에 대한 배합비(불휘발분의 중량비)가 하기 비율의 방청첨가제(기체수지+다작용기 폴리이소시아네이트 화합물)/방청첨가제=90/10~40/60(Iv) Gas resins, in which at least one basic nitrogen atom and at least two primary hydroxyl groups are added at the end of the epoxy resin. (Ii) Polyfunctional polyisocyanate compounds having three or more isocyanate groups in one molecule. (Iv) Gas resins and polyfunctional groups. The compounding ratio (weight ratio of the non volatile matter) with respect to the total amount of a polyisocyanate compound is the following ratio the antirust additive (gas resin + polyfunctional polyisocyanate compound) / antirust additive = 90/10-40/60 제1항에 있어서, 유기 피막중의 방청첨가제가 난용성 크롬산염으로 되는 것을 특징으로하는 내부식성에 우수한 유기복합피복강판.The organic composite coated steel sheet excellent in corrosion resistance according to claim 1, wherein the antirust additive in the organic coating is a poorly soluble chromate. 제2항에 있어서, 난용성 크롬산기로서, 크롬산바륨, 크롬산스트론튬, 크롬산칼슘, 크롬산아연, 크롬산아연칼륨, 크롬산납으로 된 군중에서 선택되는 1종 또는 2종이상을 사용하는 것을 특징으로 하는 내부식성에 우수한 유기 복합피복강판.The method according to claim 2, wherein one or two or more selected from the group consisting of barium chromium, strontium chromium, calcium chromium, zinc chromate, potassium chromate, and lead chromate is used as the poorly soluble chromic acid group. Organic composite coated steel sheet with excellent corrosion resistance. 제1항에 있어서, 유기피막중의 방청첨가제가, 하기 배합비(불휘발분의 중량비)의 실리카 및 난용성 크롬산염으로 되는 것을 특징으로 하는 내부식성에 우수한 유기복합피복강판.The organic composite coated steel sheet having excellent corrosion resistance according to claim 1, wherein the antirust additive in the organic coating is made of silica and poorly soluble chromate in the following compounding ratio (weight ratio of nonvolatile matter). 제4항에 있어서, 난용성 크롬산염으로서, 크롬산바륨, 크롬산스트론튬, 크롬산칼슘, 크롬산아연, 크롬산아연칼륨, 크롬산납으로 된 군중에서 선택된는 1종 또는 2종이상을 사용한 내부식성에 우수한 것을 특징으로 하는 유기복합피복강판.The poorly soluble chromate is selected from the group consisting of barium chromium, strontium chromium, calcium chromium, zinc chromate, zinc chromium potassium and lead chromate, which is excellent in corrosion resistance using one or two or more. Organic composite coated steel sheet. 제1항에 있어서, 유리피막중의 방청첨가제가, 난용성 크롬산염으로 된 다작용기 폴리이소시아네이트 화합물의 배합량이, 기체수지의 고형분 100중량부에 대하여 5~80중량부인 것을 특징으로 하는 내부식성에 우수한 유기복합피복강판.The anticorrosion resistance according to claim 1, wherein the anticorrosive additive in the glass coating is 5 to 80 parts by weight based on 100 parts by weight of the solid content of the gas resin. Excellent organic composite coated steel sheet. 제1항에 있어서, 유기피막중의 방청첨가제가, 하기 배합비(불휘발분의 중량비)의 실리카 및 난용성 크롬산염으로 되고, 다작용기 폴리이소시아네이트 화합물의 배합량이, 기체수지의 고형분 100중량부에 대하여 5~80중량부인 것을 특징으로 하는 내부식성에 우수한 유기복합피복강판.The antirust additive according to claim 1, wherein the antirust additive in the organic coating is composed of silica and poorly soluble chromate in the following compounding ratio (weight ratio of nonvolatile matter), and the compounding amount of the polyfunctional polyisocyanate compound is based on 100 parts by weight of the solid content of the gas resin. Organic composite coated steel sheet excellent in corrosion resistance, characterized in that 5 to 80 parts by weight. 실리카/난용성 크롬산염=35/5~1/39Silica / Soluble Chromate = 35/5 ~ 1/39 아연계 도금강판의 표면에 금속크롬환산으로 부착량 10~200㎎/㎡의 크로메이트 피막을 가지며, 그 크로메이트 피막의 상부에, 하기(ⅰ)~(ⅲ)의 성분을 함유한 막두께가 0.2~2.0㎕인 유리피막을 가지는 내부식성에 우수한 유기 복합피복강판.The surface of the zinc-based plated steel sheet has a chromate coating having an adhesion amount of 10 to 200 mg / m 2 in terms of metal chromium, and has a film thickness containing 0.2 to 2.0 above the chromate coating. An organic composite coated steel sheet excellent in corrosion resistance having a glass coating of μl. (ⅰ)에폭시 수지 말단에 1개 이상의 염기성 질소원자와 2개이상의 1급 수산기를 부가한 기체수지 (ⅱ)1분자중에 3개이상의 이소시아네이트기를 가지는 다작용기 폴리이소시아네이트 화합물 (ⅲ)기체수기와 다작용기 폴리이소시아네이트 화합물의 합계량에 대한 배합비(불휘발분의 중량비)가 하기 비율의 난용성 크롬산염 및 소수성 실리카(기체수지+다작용기 폴리이소시아네이트 화합물)/(난용성 크롬산염+소수성 실리카)=90/10~40/60(Iv) Gas resins having at least one basic nitrogen atom and at least two primary hydroxyl groups added to the epoxy resin terminals. (Ii) Polyfunctional polyisocyanate compounds having three or more isocyanate groups in one molecule. The blending ratio (weight ratio of the non-volatile content) to the total amount of the polyisocyanate compound is poorly soluble chromate and hydrophobic silica (gas resin + polyfunctional polyisocyanate compound) / (poorly soluble chromate + hydrophobic silica) in the following ratio: 40/60 소수성 실리카/난용성 크롬산염=35/5~1/39Hydrophobic Silica / Soluble Chromate = 35/5 ~ 1/39 제8항에 있어서, 다작용기 폴리이소시아네이트 화합물의 배합량이, 기체수지의 고형분 100중량부에 대하여 5~80중량부인 것을 특징으로 하는 내부식성에 우수한 유기 복합피복강판.The organic composite coated steel sheet excellent in corrosion resistance according to claim 8, wherein the compounding amount of the polyfunctional polyisocyanate compound is 5 to 80 parts by weight based on 100 parts by weight of the solid content of the gas resin. 아연계 도금강판의 표면에 금속크롬환산으로 부착량 10~200㎎/㎡의 크로메이트 피막을 가지며, 그 크로메이트 피막의 상부에, 하기(ⅰ)~(ⅲ)의 성분을 함유한 막두께가 0.2~2.0㎕인 유리피막을 가지는, 내부식성에 우수한 유기 복합피복강판.The surface of the zinc-based plated steel sheet has a chromate coating having an adhesion amount of 10 to 200 mg / m 2 in terms of metal chromium, and has a film thickness containing 0.2 to 2.0 above the chromate coating. An organic composite coated steel sheet excellent in corrosion resistance, having a glass coating of μl. (ⅰ)에폭시 수지 말단에 1개 이상의 염기성 질소원자와 2개이상의 1급 수산기를 부가한 기체수지 (ⅱ)1분자중에 3개이상의 이소시아네이트기를 가지는 다작용기 폴리이소시아네이트 화합물을, 기체수지의 고형분 100중량부에 대하여 10~50중량부 (ⅲ)기체수지와 다작용기 폴리이소시아네이트 화합물의 합계량에 대한 배합비(불휘발분의 중량비)가 하기 비율의 난용성 크롬산염(기체수지+다작용기 폴리이소시아네이트 화합물)/(난용성 크롬산염)=70/30~40/60(Iii) A gas resin in which at least one basic nitrogen atom and at least two primary hydroxyl groups are added at the end of the epoxy resin. (Ii) A polyfunctional polyisocyanate compound having three or more isocyanate groups in one molecule is 100% by weight of the solid of the gas resin. 10 to 50 parts by weight of the total amount of the gas resin and the polyfunctional polyisocyanate compound (parts by weight ratio of nonvolatile matter) is poorly soluble chromate (gas resin + polyfunctional polyisocyanate compound) / ( Poorly soluble chromate) = 70/30 ~ 40/60 아연계 도금강판의 표면에 금속크롬환산으로 부착량 10~200㎎/㎡의 크로메이트 피막을 가지며, 그 크로메이트 피막의 상부에, 하기(ⅰ)~(ⅲ)의 성분을 함유하는 막두께가 0.2~2.0㎕인 유리피막을 가지는, 내부식성에 우수한 유기 복합피복강판.It has a chromate film of 10-200 mg / m2 of adhesion amount in terms of metal chromium on the surface of the zinc-based plated steel sheet, and has a film thickness of 0.2 to 2.0 containing the following components on the chromate film. An organic composite coated steel sheet excellent in corrosion resistance, having a glass coating of μl. (ⅰ)에폭시 수지 말단에 1개 이상의 염기성 질소원자와 2개이상의 1급 수산기를 부가한 기체수지 (ⅱ)1분자중에 3개이상의 이소시아네이트기를 가지는 다작용기 폴리이소시아네이트 화합물을, 기체수지의 고형분 100중량부에 대하여 10~50중량부 (ⅲ)기체수기와 다작용기 폴리이소시아네이트 화합물의 합계량에 대한 배합비(불휘발분의 중량비)가 하기 비율의 난용성 크롬산염 및 실리카(기체수지+다작용기 폴리이소시아네이트 화합물)/(난용성 크롬산염+실리카)=70/30~40/60(Iii) A gas resin in which at least one basic nitrogen atom and at least two primary hydroxyl groups are added at the end of the epoxy resin. (Ii) A polyfunctional polyisocyanate compound having three or more isocyanate groups in one molecule is 100 wt. 10 to 50 parts by weight of the water-soluble and water-soluble chromate and silica (gas resin + polyfunctional polyisocyanate compound) in the ratio of / (Solubility chromate + silica) = 70/30-40/60 실리카/난용성 크롬산염=20/20~1/39Silica / Soluble Chromate = 20/20 ~ 1/39 제11항에 있어서, 실리카가 소수성 실리카인 것을 특징으로 하는 내부식성에 우수한 유기복합피복강판.The organic composite coated steel sheet excellent in corrosion resistance according to claim 11, wherein the silica is hydrophobic silica. 제1항 내지 제12항중 어느 한항에 있어서, 다작용기 폴리이소시아네이트가, 1분자중에 4개이상의 이소시아네이트기를 가지는 것을 특징으로 하는 내부식성에 우수한 유기복합피복강판.The organic-composite coated steel sheet excellent in corrosion resistance according to any one of claims 1 to 12, wherein the polyfunctional polyisocyanate has four or more isocyanate groups in one molecule. 제1항 내지 제12항중 어느 한항에 있어서. 다작용기 폴리소시아네이트가, 분자중에 6개이상의 이소시아네이트기를 가지는 것을 특징으로 하는 내부식성에 우수한 유기복합피복강판.The method according to any one of claims 1 to 12. An organic composite coated steel sheet excellent in corrosion resistance, characterized in that the polyfunctional polysocyanate has 6 or more isocyanate groups in its molecule. 제1항 내지 제12항중 어느 한항에 있어서, 다작용기 폴리이소시아네이트가, 1분자중에 6개 이상의 이소시아네이트기를 가지는 헥사메킬렌디이소시아네이트의 다작용체인것을 특징으로 하는 내부식성에 우수한유기복합피복강판.The organic composite coated steel sheet as claimed in any one of claims 1 to 12, wherein the polyfunctional polyisocyanate is a polyfunctional hexamethylene diisocyanate having 6 or more isocyanate groups in one molecule. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950701797A 1993-09-04 1994-07-22 Organic composite coated steel sheet with excellent corrosion resistance KR100280604B1 (en)

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JP93-243738 1993-09-04
JP24373793 1993-09-04
JP93-243737 1993-09-04
JP24373893 1993-09-04
JP94-113590 1994-04-28
JP11359194A JP3153706B2 (en) 1993-09-04 1994-04-28 Organic composite coated steel sheet with excellent rust resistance
JP11359094A JP3153705B2 (en) 1993-09-04 1994-04-28 Organic composite coated steel sheet with excellent rust resistance
JP94-113591 1994-04-28
PCT/JP1994/001214 WO1995007371A1 (en) 1993-09-04 1994-07-22 Organic-composite-coated steel sheet excellent in resistance to rusting of adventitious origin

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