WO2023189304A1 - Composition aqueuse de revêtement de polyuréthane à composants multiples - Google Patents

Composition aqueuse de revêtement de polyuréthane à composants multiples Download PDF

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Publication number
WO2023189304A1
WO2023189304A1 PCT/JP2023/008677 JP2023008677W WO2023189304A1 WO 2023189304 A1 WO2023189304 A1 WO 2023189304A1 JP 2023008677 W JP2023008677 W JP 2023008677W WO 2023189304 A1 WO2023189304 A1 WO 2023189304A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydroxyl group
component
coating composition
containing resin
resin emulsion
Prior art date
Application number
PCT/JP2023/008677
Other languages
English (en)
Japanese (ja)
Inventor
俊博 木村
安明 西澤
Original Assignee
関西ペイント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 関西ペイント株式会社 filed Critical 関西ペイント株式会社
Priority to JP2023539940A priority Critical patent/JP7353542B1/ja
Priority to JP2023150947A priority patent/JP2023164769A/ja
Publication of WO2023189304A1 publication Critical patent/WO2023189304A1/fr

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Classifications

    • 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
    • B05D7/24—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 for applying particular liquids or other fluent materials
    • 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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • 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

Definitions

  • Patent Document 1 describes (A) copolymerization of any ethylenically unsaturated monomer with a hydroxyl value of 100 to 250 mgKOH/g, a weight average molecular weight of 4,000 to 30,000, and a glass transition temperature of -10 to 40.
  • the hydroxyl group-containing resin emulsion (a1) in the present invention is a component containing a resin emulsion in which a hydroxyl group-containing resin is dispersed in a solvent such as water, and is limited to conventionally known ones as long as it has the ability to form a coating film. It can be used without.
  • the hydroxyl group-containing resin emulsion (a1-2) having a hydroxyl group-containing resin having a glass transition temperature of 15°C or less is effective for scratch resistance, and is more preferably within the range of -50 to 15°C, and -30 to 5°C. It is particularly preferred that the temperature is within the range of °C.
  • the hydroxyl group-containing resin of at least one of the emulsions has a hydroxyl value within the range of 110 to 250 mgKOH/g, particularly 140 to 200 mgKOH/g, and an acid value within the range of 5 to 50 mgKOH/g, especially It is preferably within the range of 5 to 40 mgKOH/g, and it is particularly preferable that the hydroxyl group-containing resin of the hydroxyl group-containing resin emulsion (a1-2) is within the above range.
  • the nonvolatile content concentration of the second component (B) is suitably within the range of 20 to 90% by mass, particularly 30 to 80% by mass from the viewpoint of pot life and finish quality of the formed coating film. .
  • hydrophobic polyisocyanate compound can also be included as a curing agent.
  • hydrophobic polyisocyanate compounds those commonly used in solvent-based coating compositions can be used.
  • the organic solvent (b2) preferably contains an organic solvent with a boiling point higher than that of water, and particularly preferably contains a compound with a boiling point of 140 to 180°C.
  • the substrate to which the aqueous multi-component polyurethane coating composition of the present invention is applied is not particularly limited, and includes, for example, metals such as aluminum, iron, stainless steel, zinc, copper, and tinplate; glass, concrete, slate plates, etc. Inorganic materials; organic materials such as plastics and vinyl chloride; wood, etc. These surfaces may be coated with water-based or solvent-based paints, or may be damaged painted bodies. Among these, it can be suitably used on a base treatment coating obtained by applying a primer surfacer and/or base paint to an old automobile coating or a damaged part of a painted body.
  • the aqueous multi-component urethane coating composition of the present invention can form a coating film with excellent finish even when dried at room temperature at a temperature of 5° C. to 40° C., but it may also be subjected to forced drying or baking drying.
  • the weight average molecular weight, acid value, hydroxyl value average particle diameter, and glass transition temperature of the acrylic resin emulsions obtained in Production Examples 1 to 7 are shown in Table 1 below.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne : une composition aqueuse de revêtement de polyuréthane à composants multiples contenant un premier composant (A) qui contient une émulsion de résine contenant un groupe hydroxyle (a1) et de l'eau et un second composant (B) qui contient un composé polyisocyanate (b1) et un solvant organique (b2), la dureté Martens d'un film de revêtement obtenu par application de la composition de revêtement à une plaque d'étain de façon à atteindre une épaisseur de film post-séchage de 40 µm et un durcissement pendant 40 minutes à 60 °C étant de 20 N/mm2 à 60 N/mm2, la dureté Martens d'un film de revêtement obtenu par application de la composition de revêtement à une plaque d'étain de façon à atteindre une épaisseur de film post-séchage de 40 µm et un durcissement pendant 180 minutes à 60 °C étant de 80 N/mm2 à 130 N/mm2 et le poids moléculaire entre des réticulations d'un film de revêtement obtenu par durcissement de la composition de revêtement pendant 180 minutes à 60 °C étant de 800 ou moins ; et un procédé d'application de la composition aqueuse de revêtement de polyuréthane à composants multiples.
PCT/JP2023/008677 2022-03-30 2023-03-07 Composition aqueuse de revêtement de polyuréthane à composants multiples WO2023189304A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2023539940A JP7353542B1 (ja) 2022-03-30 2023-03-07 水性多液型ポリウレタン塗料組成物
JP2023150947A JP2023164769A (ja) 2022-03-30 2023-09-19 水性多液型ポリウレタン塗料組成物

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022055727 2022-03-30
JP2022-055727 2022-03-30

Publications (1)

Publication Number Publication Date
WO2023189304A1 true WO2023189304A1 (fr) 2023-10-05

Family

ID=88201437

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/008677 WO2023189304A1 (fr) 2022-03-30 2023-03-07 Composition aqueuse de revêtement de polyuréthane à composants multiples

Country Status (1)

Country Link
WO (1) WO2023189304A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019142999A (ja) * 2018-02-16 2019-08-29 関西ペイント株式会社 水性２液型ポリウレタン塗料組成物
JP2020111723A (ja) * 2019-01-08 2020-07-27 関西ペイント株式会社 水性多液型ポリウレタン塗料組成物
JP2020147034A (ja) * 2020-02-28 2020-09-17 デクセリアルズ株式会社 水廻り用活性エネルギー線硬化性樹脂組成物、水廻り用防汚積層体、及びその製造方法、並びに水廻り用物品
JP7235923B1 (ja) * 2022-04-22 2023-03-08 関西ペイント株式会社 水性多液型ポリウレタン塗料組成物

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019142999A (ja) * 2018-02-16 2019-08-29 関西ペイント株式会社 水性２液型ポリウレタン塗料組成物
JP2020111723A (ja) * 2019-01-08 2020-07-27 関西ペイント株式会社 水性多液型ポリウレタン塗料組成物
JP2020147034A (ja) * 2020-02-28 2020-09-17 デクセリアルズ株式会社 水廻り用活性エネルギー線硬化性樹脂組成物、水廻り用防汚積層体、及びその製造方法、並びに水廻り用物品
JP7235923B1 (ja) * 2022-04-22 2023-03-08 関西ペイント株式会社 水性多液型ポリウレタン塗料組成物

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