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Weather-resistant water-based polyurethane coating agent

A water-based polyurethane and finishing agent technology, used in polyurea/polyurethane coatings, coatings, animal husbandry, etc., can solve the problems of low gloss, poor durability, poor appearance, etc., and achieve soft gloss, good weather resistance, water-soluble good effect

Inactive Publication Date: 2015-05-20
WUJIANG HUACHENG COMPOSITE MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyurethane leather finishing agents on the domestic market are mainly prepared from polyether polyols and TDI, which have poor appearance, low gloss, and poor durability, so their performance needs to be improved.

Method used

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  • Weather-resistant water-based polyurethane coating agent
  • Weather-resistant water-based polyurethane coating agent

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The components were prepared in the weight ratios shown in Table 1.

[0014] The weight proportion of table 1 embodiment 1~embodiment 3

[0015]

[0016] Above-mentioned wax adopts the one in galloma wax (embodiment 1), rice bran wax (embodiment 2), sugarcane wax (embodiment 3);

[0017] Above-mentioned tensio-active agent adopts stearic acid (embodiment 1), sodium dodecylbenzenesulfonate (embodiment 2, embodiment 3);

[0018] The above-mentioned titanium dioxide adopts rutile type titanium dioxide.

[0019] Described defoamer adopts simethicone oil.

[0020] Above-mentioned thickener adopts sodium polyacrylate (embodiment 1), polyacrylic acid (embodiment 2), polyacrylate (embodiment 3).

[0021] The preparation method is: take water, surfactant, thickener, defoamer, stir evenly, add polybutadiene glycol, wax, polystyrene emulsion, butyl methacrylate, triglycerol, di Methylolpropionic acid and dibenzoyl peroxide are dispersed evenly at 1500-2000rpm; then titanium...

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Abstract

The invention provides a weather-resistant water-based polyurethane coating agent, belonging to the technical field of leather assistants. The weather-resistant water-based polyurethane coating agent comprises the following components in parts by weight: 3-5 parts of polybutadiene diol, 15-30 parts of wax, 5-15 parts of polystyrene emulsion, 5-8 parts of butyl methacrylate, 4-8 parts of titanium white, 1-5 parts of sodium oleate, 1-5 parts of glycerol triol, 2-4 parts of dimethylolpropionic acid, 1-3 parts of thickening agent, 3-5 parts of defoaming agent, 5-9 parts of dibenzoyl peroxide, 30-50 parts of water and 3-6 parts of surfactant. The leather coating agent can be used for coating the bottom layer, middle layer and top layer of the leather, has the advantages of high water solubility and high emulsion stability, and does not have the phenomenon of stratification or wax floatation after being stored for a long time. The coating agent is suitable for coating various types of leather; and the coated leather has the advantages of soft luster and favorable weather resistance.

Description

technical field [0001] The invention provides a leather finishing agent, in particular to a weather-resistant water-based polyurethane finishing agent, which belongs to the technical field of leather auxiliaries. Background technique [0002] Leather finishing agents generally refer to materials that can form a thin film on the leather surface by wiping, brushing, spraying, or drenching, and are generally composed of film-forming substances, coloring materials, solvents, and additives. It has the functions of increasing the appearance of the leather, improving the durability, correcting the defects of the leather surface, and increasing the variety of designs and colors. It can not only make the finished leather have a soft feel, but also form a layer of oil-resistant and abrasion-resistant film on the leather surface. [0003] As a leather finishing agent, water-based polyurethane has superior comprehensive performance than acrylic resin, and solves the problem of "hot sti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D7/12C14C11/00D06M15/564
Inventor 凌元若
Owner WUJIANG HUACHENG COMPOSITE MATERIAL SCI & TECH