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Resin composition, primer coating material, and plastic molded article coated with such coating material

A technology of resin composition and molded products, applied in the direction of coating, primer, etc., can solve the problems of poor adhesion of outer coating film, short storage period, poor workability, etc., and achieve high adhesion, The effect of excellent water resistance

Active Publication Date: 2015-11-18
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the coating film of the paint using this resin composition, although the adhesion to the base material is improved, the adhesion to the outer coating film is deteriorated. Liquid type, so there is a problem that the pot life is short and the workability is poor

Method used

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  • Resin composition, primer coating material, and plastic molded article coated with such coating material
  • Resin composition, primer coating material, and plastic molded article coated with such coating material
  • Resin composition, primer coating material, and plastic molded article coated with such coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] (Example 1: Synthesis and evaluation of resin composition (1))

[0075] 540 parts by mass of toluene, 430 parts by mass of methyl ethyl ketone, and an acid-modified polyolefin resin (manufactured by Nippon Paper Co., Ltd. "Auroren 350S", maleic anhydride modified polyolefin resin) 100 parts by mass, and the acid-modified polyolefin resin was dissolved under the condition of an internal temperature of 80°C. Next, 55 parts by mass of styrene, 310 parts by mass of methyl methacrylate, 480 parts by mass of ethyl acrylate, 50 parts by mass of 2-hydroxyethyl methacrylate, 3 parts by mass of methacrylic acid, and 2-methacryloyloxyethyl phosphate (manufactured by Kyoeisha Chemical Industry Co., Ltd., LIGHTESTERP-1M) 2 parts by mass, tert-butyl peroxy-2-ethylhexanoate 12 parts by mass, and toluene 250 A mixture composed of parts by mass. After dripping, it was made to react at 80 degreeC for 8 hours, the non-volatile content was 45 mass %, the weight average molecular weight w...

Embodiment 2～26

[0106] (Examples 2 to 26: Synthesis and evaluation of resin compositions (2) to (26))

[0107] Resin compositions (2) to (26) were synthesized in the same manner as in Example 1 except that the vinyl monomer and acid-modified polyolefin resin were changed to the compositions shown in Tables 1 to 3 below. and evaluation.

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PUM

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Abstract

Provided is a resin composition which is obtained by subjecting a vinyl monomer mixture (A) to a polymerization reaction in the presence of an acid-modified polyolefin resin (B); the vinyl monomer mixture (A) has a glass transition temperature as calculated using the Fox equation of -5°C to 45°C, and contains, as essential components, a vinyl monomer (a1) having a phosphorus atom and one or more vinyl monomers (a2) selected from among the group consisting of ethyl acrylate, n-butyl acrylate, and 2-ethylhexyl acrylate. The resin composition is characterized in that the mass ratio of the vinyl monomer mixture (A) to the acid-modified polyolefin resin (B) [(A) / (B)] falls within the range 99 / 1-60 / 40. This resin composition exhibits high adhesion to a plastic and to an overcoat film and can produce a coating film having excellent water resistance, and can therefore be suitably used in a primer coating material.

Description

technical field [0001] The present invention relates to a resin composition capable of obtaining a coating film having high adhesion to a plastic substrate and an exterior coating film and excellent water resistance, a primer coating material, and a plastic molded article coated with the coating material. Background technique [0002] Conventionally, acrylic resins have been widely used in paints, inks, adhesives, synthetic leathers, and the like because they are excellent in weather resistance, flexibility, strength, and adhesiveness. In particular, in the application of coatings, in the fields of automobiles, household electrical appliances, building materials, etc., as base resins for coatings on various substrates (such as metals, wood, paper, plastics), etc. Acrylic resins with desired properties. [0003] On the other hand, as a plastic molded article, for a plastic molded article using a resin such as acrylonitrile-butadiene-styrene copolymer, polycarbonate, polystyr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/00C08J7/04C09D5/00C09D143/02C09D151/06C08J7/043
CPCC08F255/00C08J7/042C08J7/047C08J2377/00C08J2423/08C09D5/00C09D143/02C09D151/06C08J7/0427C09D5/002C08J7/043C08J2400/00C08J2451/06
Inventor 渥美雅崇高桥诚治
Owner DIC CORP