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High-solid polyurethane matt varnish and preparation method thereof

A polyurethane, high solid content technology, used in polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor storage stability, and achieve the effect of reducing dosage, high solid content in construction, and improving grades

Active Publication Date: 2017-10-03
SKSHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a high-solid polyurethane matte varnish, which solves the technical problem of poor storage stability of the existing polyurethane matte varnish at low viscosity, and has a higher construction solid content, which helps to reduce Low cost, save raw materials, make the paint film plump and high hardness

Method used

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  • High-solid polyurethane matt varnish and preparation method thereof
  • High-solid polyurethane matt varnish and preparation method thereof
  • High-solid polyurethane matt varnish and preparation method thereof

Examples

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specific Embodiment approach

[0028] A high-solid-content polyurethane matte varnish is characterized in that: it is formulated by a weight ratio of 1:0.6-1:0.1-0.4 from A component, B component, and an environmentally friendly thinner;

[0029] The first component is made from the raw materials of the following weight ratio:

[0030]

[0031] The B component is made from the raw materials of the following weight ratio:

[0032] 40-70 parts of TDI trimer,

[0033] HDI trimer 20-40 parts,

[0034] 15-30 parts of butyl acetate;

[0035] Described environment-friendly diluent is made from the raw material of following weight ratio:

[0036]

[0037] Further, the matting powder is silicon dioxide with a particle size of 8-15 microns. Through the thickening of the matting powder itself, the matting filler increases the solid content, reduces the amount of anti-settling slurry, and achieves the purpose of high construction solid content and low VOC.

[0038] Further, the matting filler is a filler tha...

Embodiment 1

[0051] Embodiment 1 is the best embodiment:

[0052] High solid content polyurethane matt varnish, which is prepared from component A, component B, and environmentally friendly thinner in a weight ratio of 1:0.6:0.3;

[0053] The first component is made from the raw materials of the following weight ratio:

[0054]

[0055] The B component is made from the raw materials of the following weight ratio:

[0056] 60 parts of TDI trimer,

[0057] HDI trimer 40 parts,

[0058] 20 parts of butyl acetate;

[0059] Described environment-friendly diluent is made from the raw material of following weight ratio:

[0060]

[0061] The matting powder is silicon dioxide with a particle size of 11 microns.

[0062] The matting filler is glass powder.

[0063] The high-solid low-viscosity alkyd resin is a short-oil alkyd resin for PU matte with a solid content of 80% and a viscosity of 5000cps / 25°C.

[0064] The dispersant is a copolymer dispersant containing filler affinity group...

Embodiment 2

[0074] Embodiment 2 is the best embodiment:

[0075] High solid content polyurethane matt varnish, which is prepared from component A, component B, and environmentally friendly thinner in a weight ratio of 1:0.7:0.2;

[0076] The first component is made from the raw materials of the following weight ratio:

[0077]

[0078]

[0079] The B component is made from the raw materials of the following weight ratio:

[0080] 70 parts of TDI trimer,

[0081] 35 parts of HDI trimer,

[0082] 15 parts of butyl acetate;

[0083] Described environment-friendly diluent is made from the raw material of following weight ratio:

[0084]

[0085] The matting powder is silicon dioxide with a particle size of 9 microns.

[0086] The matting filler is an organic matting agent and glass powder in a weight ratio of 1:2.

[0087] The high-solid low-viscosity alkyd resin is a short-oil alkyd resin for PU matte with a solid content of 80% and a viscosity of 4000cps / 25°C.

[0088] The d...

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Abstract

The invention relates to high-solid-content PU (polyurethane) matte varnish and a preparation method thereof. The matte varnish is prepared from a component A, a component B and an environment-friendly diluent. The matte varnish has the benefits as follows: the problem of poorer storage stability under low viscosity is effectively solved, meanwhile, by means of low system viscosity, the VOC (volatile organic compound) content of construction is further reduced, the purpose of consumption tax exemption is achieved, besides, the usage of a solvent and the number of coating layers of the varnish can be greatly reduced due to the high solid content of the construction, accordingly, the cost reduction is facilitated, and raw materials are saved; a paint film has high hardness and is scratch-resistant, and the grade of wood lacquer is improved.

Description

technical field [0001] The invention relates to a high solid content polyurethane matte varnish and a preparation method thereof. Background technique [0002] In order to promote energy conservation and environmental protection, from February 1, 2015, consumption tax will be levied on paints with a volatile organic compound (VOC) content higher than 420 mg / L (inclusive) under construction. Due to the need to add matting powder and anti-settling slurry to the polyurethane matt varnish, the system viscosity is high, and more diluents are needed for dilution and spraying, which greatly increases the VOC content. Not only the cost increases, but also pollutes the environment, making it difficult to be welcomed by consumers. The purpose of the present invention is to provide a product with high solid content, through the thickening of the matting powder itself, the matting filler increases the solid content, reduces the amount of anti-settling slurry, and achieves the purpose o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D7/12C08G18/68
Inventor 洪杰张胜军赵子千王新潮
Owner SKSHU PAINT
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