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Active energy ray-curable resin composition, undercoating agent containing same, and molded article

A technology of active energy rays and curable resins, applied in coatings, polyester coatings, etc., can solve problems such as unfavorable working environment, whitening appearance, incompatibility, etc., and achieve good appearance, excellent storage stability, and compatibility good capacitive effect

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

Coating agents usually mix alkyd resins with monomers containing (meth)acryloyl groups, but because the polarities of the two are different, it is difficult to be uniformly compatible
When the compatibility is poor, there will be a problem of poor appearance such as whitening when the coating agent is cured
Water-based coating agents can be called environment-friendly, but actually contain low-molecular-weight volatile components used as neutralizers, so they are not suitable for working environments, and there are also problems with storage stability as a coating agent

Method used

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  • Active energy ray-curable resin composition, undercoating agent containing same, and molded article

Examples

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Effect test

Embodiment

[0065] Hereinafter, specific synthesis examples and examples are given to describe the present invention in more detail. Hereinafter, unless otherwise specified, "part" and "%" are based on mass.

[0066] [Measurement method of mass average molecular weight (Mw) and molecular weight distribution (Mw / Mn)]

[0067] The mass average molecular weight (Mw) and molecular weight distribution (Mw / Mn) were measured by the gel permeation chromatography (GPC) of the following conditions.

[0068] Measuring device: HLC-8220GPC manufactured by Tosoh Corporation

[0069] Column: TSK-GUARDCOLUMNSuperHZ-L by Tosoh Corporation + TSK-GELSuperHZM-M by Tosoh Corporation × 4

[0070] Detector: RI (differential refractometer)

[0071] Data processing: MultiStationGPC-8020modelII manufactured by Tosoh Corporation

[0072] Determination conditions: column temperature 40°C

[0073]Solvent Tetrahydrofuran

[0074] Flow rate 0.35ml / min

[0075] Standard: Monodisperse Polystyrene

[0076] Sample:...

Synthetic example 1

[0078] Add 840 parts of linseed oil, 420 parts of soybean oil, 208 parts of benzoic acid, 525 parts of pentaerythritol, 88 parts of diethylene glycol, and 843 parts of acid anhydride, 85 parts of xylene and 0.5 part of organotitanium compound were blown into the flask with dry nitrogen, and heated to 230-250°C while stirring to carry out dehydration condensation reaction. When the acid value reached 10.0 mgKOH / g, the reaction was stopped, and after cooling to 150° C., a mixed solvent (xylene / toluene=50 / 50 (mass ratio)) was added dropwise to dilute to a solid content of 60%. As a result, an alkyd resin (A1) having a number average molecular weight of 4,200, a mass average molecular weight of 109,000, a hydroxyl value of 85, and an acid value of 10.0 and an oil degree of 45 was obtained.

Synthetic example 2

[0080] Add 616 parts of linseed oil, 299 parts of soybean oil fatty acid, 53 parts of p-tert-benzoic acid, 211 parts of pentaerythritol, 38 parts of dipropylene glycol, and 153 parts of glycerin into a flask with a stirring rod, a temperature sensor, a rectifying tube, and a decanter. parts, 563 parts of phthalic anhydride, 71 parts of xylene and 0.4 parts of organotitanium compound, blow dry nitrogen into the flask, and heat to 230-250°C while stirring to carry out dehydration condensation reaction. When the acid value reached 8.3 mgKOH / g, the reaction was stopped, and after cooling to 150° C., a mixed solvent (xylene / toluene=50 / 50 (mass ratio)) was added dropwise to dilute to a solid content of 60%. As a result, an alkyd resin (A2) having a number average molecular weight of 3,400, a mass average molecular weight of 90,000, a hydroxyl value of 108, and an oil degree of 8.3 with an acid value of 8.3 was obtained.

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Abstract

　Provided are: an active energy ray-curable resin composition having excellent storage stability, and furthermore being provided with a high level of coatability, close adhesion, and external appearance of the cured film on various substrates, as well as heat resistance; an active energy ray-curable undercoating agent for metal vapor deposition that uses the composition; a molded article having an undercoat layer for metal vapor deposition having excellent close adhesion to various substrates. An active energy ray-curable resin composition specifically containing an oil-modified alkyd resin (A) and a compound having a (meth)acryloyl group, the active energy ray-curable resin composition characterized in that the oil-modified alkyd resin (A) has an oil length of 30 to 70 and a mass-average molecular weight of 30,000 to 200,000, the oil-modified alkyd resin (A) being obtained by dual use of two or more types of an oil or fat (a1) having a iodine value of 100 or higher.

Description

technical field [0001] The present invention relates to an active energy ray-curable resin composition that is excellent in storage stability, and furthermore has high levels of coatability and adhesion to various substrates, appearance of a cured coating film, and heat resistance, and further relates to, An active energy ray-curable resin composition suitable for use as a coating agent for an undercoat for metal vapor deposition for a molded article formed by combining a plurality of resins. Background technique [0002] On the surface of substrates such as exterior lamp glass and reflectors of automotive parts that require excellent heat resistance, it is necessary to form metal thin films of metals such as aluminum and tin by vacuum deposition or sputtering. As the base material used in this application, there are: BMC (bulk molding compound), PPS (polyphenylene sulfide), ALD (die-cast aluminum), PBT (polybutylene terephthalate) / PET (polyphenylene sulfide) Ethylene dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F2/44C08F2/48C08F283/01C09D4/02
CPCC08F283/01C08F2/48C08F220/32C08F2220/343C08F2222/1013C08F2222/1026C08G63/48C08G63/91C09D167/08C08F220/343C08F222/103C08F222/102
Inventor 海野晃生宇野诚一
Owner DIC CORP
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