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Energy ray curable resin composition and paint using same

A technology of energy ray curing and resin composition, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as cracking and peeling of coating films, limited increase in crosslinking density, and reduction of water absorption

Active Publication Date: 2016-05-04
DAI ICHI KOGYO SEIYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the water absorption is high, it is easy to cause cracking and peeling of the coating film
[0006] In addition, although the stain resistance can be improved to some extent and the water absorption can be reduced to some extent by increasing the crosslink density, there is a limit only by increasing the crosslink density.
In addition, as the crosslinking density increases, there tends to be a problem that the coating film is prone to cracks due to internal stress

Method used

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  • Energy ray curable resin composition and paint using same

Examples

Experimental program
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Effect test

Embodiment

[0032] Hereinafter, although an Example and a comparative example demonstrate this invention more concretely, this invention is not limited to these Examples. In addition, the following "part" and "%" are set as a basis of weight unless otherwise indicated.

manufacture example

[0034] [production of polytetramethylene glycol (molecular weight 400)]

[0035] After adding 90 g (1 mol) of 1,3-butanediol, 310 g (4.3 mol) of 1,2-epoxybutane, and 0.45 g of potassium hydroxide to a stainless steel autoclave, the inside of the autoclave was replaced with nitrogen. Next, the temperature was raised to 120° C., and the pressure was maintained at 0.1 MPa at this temperature for 12 hours of reaction. After completion of the reaction, unreacted 1,2-epoxybutane was removed under reduced pressure to obtain polytetramethylene glycol (molecular weight: 400).

[0036] [production of polytetramethylene glycol (molecular weight 1000)]

[0037] Except having changed 310 g (4.3 mol) of 1, 2- butylene oxides into 910 g (12.6 mol), it reacted similarly to the above, and polytetramethylene glycol (molecular weight 1000) was obtained.

[0038] [production of polytetramethylene glycol (molecular weight 3000)]

[0039] Except having changed 310 g (4.3 mol) of 1, 2- butylene o...

Synthetic example 1

[0044] Put 638g (1mol) of butylene oxide 7mol adduct of trimethylolpropane (TMP-7BO) and 666g (3mol) of isophorone diisocyanate (IPDI) into a flask, and react at 70-80°C about 3 hours. Confirm that the amount of free isocyanate is 9.7 ± 0.3%, load 0.8 g of hydroquinone monomethyl ether, 348 g (3.1 mol) of 2-hydroxyethyl acrylate (HEA), and then react at 70 to 80 ° C to reach the concentration of free isocyanate. The amount is 0.1% or less to obtain urethane acrylate A.

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Abstract

PURPOSE: An energy ray-curable resin composition is provided to ensure excellent antifouling properties, scratch resistance, and low water-absorption and to prevent a film from becoming cracked or stripped. CONSTITUTION: An energy ray-curable resin composition comprises urethane acrylate. The urethane acrylate is obtained by reacting (A) polyetherpolyol and / or polytetramethylene etherglycol including a polyether chain obtained by the ring-opening polymerization of butylene oxides, (B) organic polyisocyanates, and (C) (meth)acrylate including a hydroxyl group. The content of (meth)acrylate-drived double bond is 1.8mol / kg.

Description

technical field [0001] The present invention relates to a resin composition for an energy ray-curable paint capable of being cured by irradiation of an energy ray, and a paint using the resin composition. Background technique [0002] Coatings are generally applied to building materials such as floors and walls, structures, and various other molded objects in order to prevent dirt, protect the base material, and maintain the appearance. [0003] As paints, solvent-based coatings in which synthetic resins are dissolved in solvents have been generally used so far. However, considering the dangers to the working environment and fireworks, various energy-ray-curable types using energy-ray-curable resins have been developed, and in It has been put into practical use in a wide range of fields such as coating of decorative boards, woodworking coatings, paper surface coatings, materials for resists, and adhesives. [0004] Stain resistance, non-scratch resistance, and durability ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/14C08G18/67C08G18/66C08G18/48C09D175/14
CPCC09D5/00C09D7/40C09D133/00C09D133/14C09D175/14
Inventor 北沢真希大西敏之
Owner DAI ICHI KOGYO SEIYAKU CO LTD