Anti-sinking PU extra-clear primer and preparation method thereof

An anti-sag and clear primer technology, which is applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of general sanding, general adhesion, and poor anti-sag, and achieve good adhesion, good fullness, and anti-sag. good sinking effect

Active Publication Date: 2013-09-18
广东花王涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the construction of similar products on the market, the common disadvantages are slow drying speed, poor sag resistance, general adhesion, low transparency, and general sandability, etc. This is a problem that has always plagued the coatings industry.

Method used

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  • Anti-sinking PU extra-clear primer and preparation method thereof
  • Anti-sinking PU extra-clear primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] An anti-sag PU special clear primer is prepared by mixing an anti-sag PU polyurethane primer, a PU anti-sag curing agent, and a PU anti-sag thinner at a weight ratio of 0.9:0.5:0.5.

[0048] Described anti-sag PU polyurethane primer is made up of following components:

[0049] A1: soybean oil alkyd resin 67%; A2: dispersant 0.1%; A3: defoamer 0.1%; A4: anti-settling slurry 8%; A5: n-butyl acetate 1%;

[0050] B1: zinc stearate 2%; B2: 800 mesh talc powder 6%; B3: 1250 mesh talc powder 8%;

[0051] C1: n-butyl acetate 1%;

[0052] D1: 6% nitrocellulose solution; D2: 0.1% leveling agent; D3: 0.1% drier; D4: 0.6% n-butyl acetate.

[0053] The PU anti-sag curing agent is composed of the following components: E1: 55% of n-butyl acetate; E2: 5% of isocyanate trimer; E3: 40% of isocyanate isopolymer.

[0054] The PU anti-sag thinner consists of the following components: F1: 35% n-butyl acetate; F2: 50% propylene glycol methyl ether acetate; F3: 15% dimethyl carbonate.

[005...

Embodiment 2

[0058] An anti-sag PU special clear primer is prepared by mixing an anti-sag PU polyurethane primer, a PU anti-sag curing agent, and a PU anti-sag thinner at a weight ratio of 1:0.4:0.6.

[0059] Described anti-sag PU polyurethane primer is made up of following components:

[0060] A1: soybean oil alkyd resin 63%; A2: dispersant 0.2%; A3: defoamer 0.2%; A4: anti-settling slurry 10%; A5: n-butyl acetate 1.5%;

[0061] B1: zinc stearate 4%; B2: 800 mesh talc powder 4.4%; B3: 1250 mesh talc powder 10%;

[0062] C1: n-butyl acetate 1.5%;

[0063] D1: 4.2% nitrocellulose solution; D2: 0.2% leveling agent; D3: 0.2% drier; D4: 0.6% n-butyl acetate.

[0064] The PU anti-sag curing agent is composed of the following components: E1: 35% of n-butyl acetate; E2: 15% of isocyanate trimer; E3: 50% of isocyanate isopolymer.

[0065] The PU anti-sag thinner consists of the following components: F1: 55% n-butyl acetate; F2: 40% propylene glycol methyl ether acetate; F3: 5% dimethyl carbonat...

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Abstract

The invention provides an anti-sinking PU extra-clear primer which is prepared by mixing an anti-sinking PU polyurethane primer, a PU anti-sinking curing agent and a PU anti-sinking diluent, wherein the anti-sinking PU polyurethane primer is prepared from soybean oil alkyd resin, a dispersant, an antifoaming agent, anti-settling slurry, pigment and filler, nitrocotton liquid, a leveling agent, a dryer and the like in addition with an environment-friendly solvent; the PU anti-sinking curing agent is prepared from n-butyl acetate, isocyanate tripolymer and isocyanate heteropolymer; and the PU anti-sinking diluent is prepared from the solvents such as n-butyl acetate, propylene glycol monomethyl ether acetate, dimethyl carbonate and the like. The anti-sinking PU polyurethane primer, the PU anti-sinking curing agent and the PU anti-sinking diluent are sufficiently and uniformly mixed to prepare the anti-sinking PU extra-clear primer which has excellent anti-sinking property and extra high transparency and is easy to polish; and the shortcomings of slow drying, poor anti-sinking property, common adhesion, low transparency, common polishing property and the like of the commercially available products are overcome.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to an anti-sag PU special clear primer and a manufacturing method thereof. Background technique [0002] Anti-sag PU special clear primer is an environmentally friendly coating with excellent comprehensive performance. It has the characteristics of good sag resistance, high transparency, and easy polishing. It is widely used as a primer for high-end suite solid wood furniture and high-end office furniture. After the construction of similar products on the market, the common disadvantages are slow drying speed, poor sag resistance, general adhesion, low transparency, and general sandability. This is a problem that has always plagued the coatings industry. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the invention provides an anti-sag PU special clear primer with excellent sag resistance and high transparency and a manufacturing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D175/14C09D101/18C09D7/12
Inventor 方学平邱纳新
Owner 广东花王涂料有限公司
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