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High-rigidity reinforcement-bulging-resistant PU (Poly Urethane) crystal transparent primer coating and primer

A high-hardness, crystal technology, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as bulging ribs, collapse transparency, etc., achieve quality and market value improvement, fast solvent dilution, and small molecular weight Effect

Inactive Publication Date: 2013-10-23
DONGGUAN DONGMENG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of existing paints such as bulging tendons, collapse and poor transparency when they are used for deep wood products, and to provide a PU crystal with high hardness, bulging resistance and good transparency. Clear Primer Coatings and Primers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] First, take 21.7kg of methyl methacrylate, 15kg of polyol, 20kg of vinyl acetate, 0.3kg of initiator, 42.9kg of butyl acetate, and 0.1kg of polymerization inhibitor to make modified acrylic resin for later use; control by temperature and time The average molecular weight of the modified acrylic resin is 40000±1000. The addition of polyhydric alcohols to the modified acrylic resin not only prevents the resin from self-polymerizing too quickly, but also ensures good compatibility with the acid-alcohol resin. The prepared modified acrylic resin should meet the following parameter requirements:

[0013] Clear and transparent appearance; color number (Fe-Co#) ≤ 1; solid content 58% ~ 62%; Pa.s / 25℃ viscosity 3 ~ 5; acid value ≤ 6mgKOH / g; hydroxyl value (100%) 85 ~ 95mgKOH / g.

[0014] Then, prepare the PU crystal transparent primer coating:

[0015] First put 25kg of acid alcohol resin, 7kg of solvent, and 0.2kg of additives into the reaction vessel, stir at a low speed of...

Embodiment 2

[0019] First, take 25.1kg of methyl methacrylate, 17.5kg of polyol, 15kg of vinyl acetate, 0.5kg of initiator, 41.6kg of butyl acetate, and 0.3kg of polymerization inhibitor to make modified acrylic resin for later use; Control the average molecular weight of the modified acrylic resin to be 40000±1000. The addition of polyhydric alcohols to the modified acrylic resin not only prevents the resin from self-polymerizing too quickly, but also ensures good compatibility with the acid-alcohol resin. The prepared modified acrylic resin should meet the following parameter requirements:

[0020] Clear and transparent appearance; color number (Fe-Co#) ≤ 1; solid content 58% ~ 62%; Pa.s / 25℃ viscosity 3 ~ 5; acid value ≤ 6mgKOH / g; hydroxyl value (100%) 85 ~ 95mgKOH / g.

[0021] Then, prepare the PU crystal transparent primer coating:

[0022] First put 30kg of acid alcohol resin, 10kg of solvent, and 0.4kg of additives into the reaction vessel, stir at a low speed of 300-600 rpm for 5...

Embodiment 3

[0026] First, take 23kg of methyl methacrylate, 16kg of polyol, 17kg of vinyl acetate, 0.4kg of initiator, 43.4kg of butyl acetate, and 0.2kg of polymerization inhibitor to make modified acrylic resin for later use; control the modification by temperature and time The average molecular weight of the permanent acrylic resin is 40000±1000. The addition of polyhydric alcohols to the modified acrylic resin not only prevents the resin from self-polymerizing too quickly, but also ensures good compatibility with the acid-alcohol resin. The prepared modified acrylic resin should meet the following parameter requirements:

[0027] Clear and transparent appearance; color number (Fe-Co#) ≤ 1; solid content 58% ~ 62%; Pa.s / 25℃ viscosity 3 ~ 5; acid value ≤ 6mgKOH / g; hydroxyl value (100%) 85 ~ 95mgKOH / g.

[0028] Then, prepare the PU crystal transparent primer coating:

[0029] First put 29kg of acid alcohol resin, 9kg of solvent, and 0.3kg of additives into the reaction vessel, stir a...

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Abstract

The invention relates to a high-rigidity reinforcement-bulging-resistant PU (Poly Urethane) crystal transparent primer coating. The PU crystal transparent primer coating is prepared from the components in percentage by weight: 25-30 percent of acid-alcohol resin, 40-50 percent of modified acrylic resin, 3-5 percent of zinc stearate, 10-15 percent of glass powder, 0.2-0.4 percent of additive and 7-10 percent of solvent. Due to adoption of the special modified acrylic resin, the high-rigidity reinforcement-bulging-resistant PU crystal transparent primer coating has the advantages of small molecular weight, strong rigidity, rapidness in drying and solvent dilution and the like; and as the glass powder with strong rigidity, good transparency and good fallibility, as well as a curing agent and a diluent with a proper proportion are used, and thus the PU crystal transparent primer with strong rigidity, rapidness in drying, good fillibility and high transparency is prepared, so that furniture products made of deep wooden eye wood such as meander belts, ebonies and the like, which have the problems of reinforcement bulging, collapse, poor transparency and the like, can be solved, the quality and the market value of the deep wooden eye furniture products are greatly improved, and the requirements of consumers and the market are satisfied.

Description

Technical field: [0001] The invention relates to the technical field of chemical coatings, in particular to a high-hardness anti-bulging PU crystal transparent primer coating and a primer. Background technique: [0002] At present, in the furniture market, there are quite a lot of high-end furniture made of willow, ebony and other materials. The holes of this kind of wood are relatively deep. And it will cause bulging after filling, collapse after complete drying, etc., and if the primer with more powder is used, the transparency of the coating film will be deteriorated. The above phenomena will reduce the quality of furniture products and it is difficult to meet Consumer requirements. Invention content: [0003] The purpose of the present invention is to overcome the disadvantages of existing paints such as bulging tendons, collapse and poor transparency when they are used for deep wood products, and to provide a PU crystal with high hardness, bulging resistance and good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D133/12C09D167/08C09D7/12C08F220/14C08F218/08C08G18/62C08G18/42
Inventor 汪艾军
Owner DONGGUAN DONGMENG CHEM CO LTD
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