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Thermoset acrylic resin for paint and high-temperature firing type polyvinylidene fluoride (PVDF) coiled material paint containing the same

A technology of acrylic resin and functional acrylic acid, which is applied in the direction of coating, etc., can solve the problems of reducing the protective effect and anti-aging performance of polyvinylidene fluoride paint film, high content of copolymerized segment functional groups, and decreased transparency of paint film. Achieve the effect of improving the protection effect and anti-aging performance, good miscibility, and improving the protection effect

Active Publication Date: 2008-05-14
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Since the commercially available thermosetting acrylic resins contain styrene and / or high carbon chain acrylic monomers in the copolymerized segments, their compatibility with polyvinylidene fluoride (PVDF) resins is poor
After the paint film formed by polyvinylidene fluoride (PVDF) resin with this thermosetting acrylic resin is irradiated by ultraviolet rays, it is easy to degrade in the acrylic resin enriched area and form voids, thereby reducing the polyvinylidene fluoride ( Protective effect and anti-aging performance of PVDF) paint film
[0007] Especially when the polyvinylidene fluoride (PVDF) resin with this thermosetting acrylic resin is used to prepare the varnish in the polyvinylidene fluoride (PVDF) coating, due to its combination with the polyvinylidene fluoride (PVDF) resin Poor compatibility will also lead to a significant decrease in the transparency of the paint film
[0008] 2. Due to the high functional monomers used in the synthesis of commercially available thermosetting acrylic resins, the functional group content in the copolymerized segment is too high
However, due to the above deficiencies, since the 1970s, thermoplastic acrylic resins have been mainly used in polyvinylidene fluoride (PVDF) coil coatings. As for polyvinylidene fluoride (PVDF) coil coatings Reports on commercial applications of blended thermosetting acrylics are indeed rare

Method used

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  • Thermoset acrylic resin for paint and high-temperature firing type polyvinylidene fluoride (PVDF) coiled material paint containing the same
  • Thermoset acrylic resin for paint and high-temperature firing type polyvinylidene fluoride (PVDF) coiled material paint containing the same
  • Thermoset acrylic resin for paint and high-temperature firing type polyvinylidene fluoride (PVDF) coiled material paint containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A thermosetting acrylic resin for coatings, the number average molecular weight of the resin is 11900, and its copolymerized segment is composed of a) 60wt.% methyl methacrylate, b) 10wt.% butyl methacrylate, c) 6wt. % acrylic acid and d) 24 wt. % of butyl acrylate composition.

[0057] The thermosetting acrylic resin of the present embodiment is made of the following raw materials in mass percentage: 30 parts of methyl methacrylate, 5 parts of butyl methacrylate, 12 parts of butyl acrylate, 3 parts of acrylic acid, 50 parts of xylene, through free A copolymer resin with a solids content of 50% was synthesized based on polymerization. The amount of functional acrylic acid monomer, namely acrylic acid, accounts for 6% of the solid part of the whole resin. The concrete preparation method of this thermosetting acrylic resin is as follows:

[0058] Add 80% of the entire solvent in the reaction bottle in advance, raise the temperature to 100°C, mix the above monomers evenl...

Embodiment 2

[0061] A thermosetting acrylic resin for coatings, the number average molecular weight of the resin is 37398, and its copolymerized segment is composed of a) 60wt.% methyl methacrylate, b) 30wt.% butyl acrylate and c) 10wt.% methyl methacrylate Composed of glycidyl acrylate.

[0062] The thermosetting acrylic resin of the present embodiment is made of the following raw materials in mass percentage: 30 parts of methyl methacrylate, 15 parts of butyl acrylate, 5 parts of glycidyl methacrylate, 50 parts of toluene, a solid synthesized by free radical polymerization 50% copolymer resin. The functional acrylic monomer, namely glycidyl methacrylate, is used in an amount of 10% of the solid mass of the entire resin.

[0063] In the preparation method of this example, the amount of azobisisobutyronitrile (AIBN) added for the first time is 0.2 parts, the reaction temperature is lowered to 85-90° C., and the rest are the same as in Embodiment 1.

[0064] The number average molecular w...

Embodiment 3

[0066] A thermosetting acrylic resin for coatings, the number average molecular weight of the resin is 35760, and its copolymerized segment is composed of a) 50wt.% methyl methacrylate, b) 20.0wt.% ethyl acrylate and c) 2.5wt. % hydroxypropyl acrylate d) 27.5 wt. % ethyl methacrylate composition.

[0067] The thermosetting acrylic resin of the present embodiment is made of the following raw materials in mass percentage: 20 parts of methyl methacrylate, 8 parts of ethyl acrylate, 11 parts of ethyl methacrylate, 1 part of hydroxypropyl acrylate, 40 parts of toluene, butyl acetate 20 parts of ester, a copolymer resin with a solid content of 40% synthesized by free radical polymerization. The functional acrylic monomer, namely hydroxypropyl acrylate, is used in an amount of 2.5% of the solid mass of the entire resin. The concrete preparation method of this thermosetting acrylic resin is as follows:

[0068]Add 65% of the entire solvent amount in the reaction bottle in advance, h...

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Abstract

The invention discloses a thermosetting acrylic resin used in paint with the number average molecular weight ranging from 10000 to 50000, as well as the high-temperature firing polyvinylidene fluorine (PVDF) coiled materials with the resin; the copolymer section of the resin comprises the methyl methacrylate ranging from 40.0wt.% to 90.0wt.%, the alkyl acrylate ranging from 10.0wt. % to 60.0wt.% (the atomicity of alkyl carbon is no more than 4) as well as the functional acrylic monomer ranging from 0.1wt.% to 10.0wt.%. With dramatic miscibility with PVDF resin, the invention has the advantages of improving the protective effect and aging resistance of paint film and enhancing the transparency and flexibility of the paint film effectively when used in high-temperature firing polyvinylidene fluorine (PVDF) coiled materials.

Description

technical field [0001] The invention relates to a thermosetting acrylic resin for coatings and a coil coating containing the resin, in particular to a thermosetting acrylic resin which can be used for high-temperature baking type polyvinylidene fluoride (PVDF) coil coatings and a coil coating containing the resin A high temperature baking polyvinylidene fluoride (PVDF) coil coating. Background technique [0002] High-temperature baking polyvinylidene fluoride (PVDF) coil coating is mainly used for surface decoration and protection of metal sheets and profiles for building curtain walls. Since polyvinylidene fluoride (PVDF) resin is insoluble in general organic solvents, it is usually made into a suspension dispersion in its latent solvent, and then a certain amount of thermoplastic acrylic resin is added to provide resin construction viscosity and improve paint film Adhesion. [0003] The flexibility of the paint film prepared by the combination of traditional thermoplasti...

Claims

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Application Information

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IPC IPC(8): C08L33/12C08L33/08C09D127/16C09D133/12C09D133/08
Inventor 朱东刘长亮曹亚成
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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