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Putty composition and repair coating method using same

A composition and putty technology, applied in the direction of filling slurry, etc., can solve the problems of reducing physical properties such as curability, surface dryness, water resistance and adhesion, and achieve the effect of excellent water resistance and adhesion

Active Publication Date: 2018-06-19
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after storing this putty composition, physical properties such as curability, surface dryness, and water resistance may decrease, and there is still room for improvement.

Method used

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  • Putty composition and repair coating method using same
  • Putty composition and repair coating method using same
  • Putty composition and repair coating method using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0116] Hereinafter, the present invention will be further explained by giving examples. Here, "parts" and "%" refer to "parts by mass" and "% by mass", respectively.

[0117]

manufacture example 1

[0119] Add 397.5 parts of diethylene glycol, 134 parts of dipropylene glycol, 580 parts of fumaric acid, and 256 parts of pentaerythritol to a 2-liter four-necked flask with a stirrer, gas tube, rectification column, thermometer, pressure reducing device and reflux cooler. Triallyl ether and 0.5 part of hydroquinone were heated to 150°C while blowing in nitrogen, and then the temperature was raised to 180°C. Next, the rectifying column was replaced with a water separator at the same temperature, the toluene was refluxed and the condensation reaction was carried out. At the end of the reaction, the toluene was removed under reduced pressure to obtain an acid value of 35 mgKOH / g and a weight average molecular weight of 3000 Unsaturated polyester resin (A-1). This resin (A-1) was dissolved in 2-hydroxyethyl methacrylate and adjusted so that the solid content concentration might reach 65%, to obtain an unsaturated polyester resin composition.

manufacture example 2

[0121] In Production Example 1, an equivalent amount of dicyclopentenoxy ethyl methacrylate was used instead of 2-hydroxyethyl methacrylate, and the rest was the same as in Production Example 1 to obtain an unsaturated polyester resin composition.

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PUM

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Abstract

The invention provides a putty composition which inhibits reduction on physic properties before adn after storage and also has stable performances. The putty composition contains a main agent component (I) and a curing agent component (II). The main agent component contains unsaturated polyester resin (A), polymerized unsaturated compound (B) and a dehydrator (C). The curing agetn component (II) comprises an orgnaic peroxide. On the basis that the total mass of the unsaturated polyester resin (A) and the polymerized unsaturated compound (B) is 100 parts by weight, the quantity of the dehydrator (C) is 0.1-50 parts by mass. Water content of the main agent component (I) is lower than 2000 ppm.

Description

Technical field [0001] The invention relates to a putty composition and a repair coating method using the putty composition. Background technique [0002] Unsaturated polyester resins are generally relatively inexpensive compared to other resins, and they will cure in a short time even at room temperature, so they are excellent in operability; furthermore, they have various features due to the choice of main raw materials. These excellent physical and chemical properties have been used in various applications such as putty, paint, FRP molded products, resin concrete, and cast molded products. [0003] In the past, from the perspective of curability and physical properties, styrene monomer was used as a reactive diluent for unsaturated polyester resins in putty compositions. [0004] However, in recent years, styrene monomer has become a restricted target in the rules for the prevention of malformation of specific chemical substances. Therefore, there has been a need to develop styre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/34
CPCC09D5/34
Inventor 堀雅司新小田尚一西泽安明中泽亮介
Owner KANSAI PAINT CO LTD
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