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Multipolymer containing fluorine for paint, combination for paint and paint

A technology of copolymer and composition, applied in the direction of coating, application, clothing, etc., can solve the problems of difficulty in coating, difficulty in obtaining a coating film with sufficient strength, decreased solubility in weak solvents, etc.

Inactive Publication Date: 2004-09-01
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the fluorine-containing copolymer used in Patent Document 1 has a high hydroxyl value in order to be used in a two-component coating, so that the solubility to weak solvents decreases, making coating difficult, and it is difficult to obtain a coating film with sufficient strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1～7

[0104] The mineral spirits (60% by mass of non-volatile content) of the obtained fluorine-containing copolymers A to G were set as 1, and diluted with mineral spirits until it became cloudy, and the dilutable ratio (dilutability of mineral spirits) was obtained.

[0105] Table 1 shows the monomer composition (mol %), hydroxyl value, acid value, Mn and mineral spirit dilutability of fluorine-containing copolymers A to G. Fluorine-containing copolymers A, D, and G did not show self-turbidity at all even when they were diluted 10 times, so their diluting properties of mineral spirits were more than 10 times.

[0106] example

example 8～15

[0108] In the mineral spirits solution (non-volatile content 60 mass %) of 100 mass parts of fluorine-containing copolymers A~G, drop the mineral spirits soluble isocyanate curing agent (タケネ-ト) of the amount (mass parts) shown in Table 2 D-177N, trade name, manufactured by Mitsui Takeda Chemical Co., Ltd.), a flow aid (BYK-320, trade name, polyether-modified methylalkyl polysiloxane, manufactured by BYK-Chemie Corporation), as a curing catalyst Dibutyltin dilaurate to prepare coatings A to G.

[0109] In addition, example 10 is except the mineral spirits solution (60 mass % of non-volatile matter 60 mass %) of the mineral spirits solution (non-volatile matter 60 mass %) of the fluorine-containing copolymer G of replacing 100 mass parts with the fluorine-containing copolymer G of 80 mass parts ) except that other operations were the same as in Example 9 to prepare the coating.

[0110] The NCO index in Table 2 is 1, indicating that OHV of the fluorinated copolymer / NCO of the c...

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PUM

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Abstract

The weak solvent-soluble fluorine-containing copolymer is a copolymer of a fluoroolefin and a double bond-containing monomer capable of copolymerizing with the fluoroolefin, wherein the content of fluorine derived from the fluoroolefin is 10 wt% or more, and the double bond-containing monomer contains 10-30 mol% of a hydroxyl group and 20-80 mol% of a branched C3 or more alkyl group.

Description

technical field [0001] The present invention relates to a weak solvent-soluble fluorine-containing copolymer for paint, a composition for paint containing the fluorine-containing copolymer for paint, and a paint. Background technique [0002] Conventionally, fluorine-containing resins have been known as coating resins that form coating films with good weather resistance. The paint containing the fluorine-containing resin is used as an outer protective film for anti-corrosion, or as an outer protective film for cement-based substrates. [0003] However, since this kind of paint contains so-called strong solvents such as toluene and xylene, if the paint is directly painted on the old paint film of synthetic resin blend paint, chlorinated rubber paint, and other paints that have changed over the years, Then there is a problem that shrinkage or swelling occurs or good adhesiveness cannot be obtained. [0004] On the other hand, in recent years, two-component paints in which a ...

Claims

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Application Information

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IPC IPC(8): C09D127/12C08F214/18
CPCA41D13/0015A41D13/0512A41D29/00A41D2600/10
Inventor 森圭介增田祥笠原洁
Owner ASAHI GLASS CO LTD
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