Preparation method of water leather matting and mending paste

A repairing cream and matting technology, applied in leather surface treatment, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc. Poor knot strength, uneven leather surface, and resistance to ironing, etc., to achieve excellent antifreeze and heat resistance, good flexibility, good tear resistance and wear resistance.

Inactive Publication Date: 2012-01-18
SHANDONG TIANQING TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of water-based leather extinction repair paste, to solve the problem of poor bonding strength between the repair paste and leather produced in the prior art, which is not resistant to ironing, polishing, and grinding. The leather surface after injury is uneven, not plump, collapsed, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] formula

[0029] Polytetramethylene ether glycol and IPDI polyurethane emulsion 150kg, lignocellulose 3kg, microcrystalline cellulose 3kg, organic elastic matting powder 1kg, titanium dioxide 1kg, kaolin 1kg, talcum powder 6kg, N -Methyl pyrrolidone 1kg, wetting agent 0.3kg, leveling agent 0.3kg, defoamer 0.15kg, dimethylaminoethanol 0.6kg, hydroxyethyl cellulose 0.7kg, hydrophobic alkali-swellable acrylic thickener 1.4kg , Water 50 kg.

[0030] Preparation Process

[0031] 1. Mixing: Add the measured polytetramethylene ether glycol and IPDI polyurethane emulsion into the dispersion tank and stir at 400-500 rpm, then add dimethylaminoethanol, N-methylpyrrolidone, wetting agent, Leveling agent, defoamer continue to stir for 10 minutes.

[0032] 2. Dilution: Add lignocellulose, microcrystalline cellulose, organic elastic matting powder, titanium dioxide, kaolin, and talcum powder into another container and slowly dilute and dissolve with water.

[0033] 3. Dispersion ...

Embodiment 2

[0035] formula

[0036] Polyoxypropylene glycol and MDI polyurethane emulsion 160kg, lignocellulose 3kg, microcrystalline cellulose 4kg, organic elastic matting powder 1.5kg, titanium dioxide 1kg, kaolin 1kg, talcum powder 5kg, methyl phenyl ether 1.2kg, wetting agent 0.4kg, leveling agent 0.4kg, defoamer 0.15kg, triethylamine 0.7kg, hydroxyethyl cellulose 0.9kg, hydrophobic alkali-swellable acrylic thickener 1.4kg, water 50kg.

[0037] Preparation Process

[0038] 1. Mixing: Add the measured polyoxypropylene glycol and MDI polyurethane emulsion into the dispersion tank and stir at 400-500 rpm, then add triethylamine, methyl phenyl ether, wetting agent, leveling agent, disinfectant The foam was stirred for another 10 minutes.

[0039] 2. Dilution: Add lignocellulose, microcrystalline cellulose, organic elastic matting powder, titanium dioxide, kaolin, and talcum powder into another container and slowly dilute and dissolve with water.

[0040] 3. Dispersion and grinding: Put...

Embodiment 3

[0042] formula

[0043] Polyoxypropylene glycol and MDI polyurethane emulsion 175kg, lignocellulose 3.5kg, microcrystalline cellulose 3.5kg, organic elastic matting powder 2kg, titanium dioxide 1.5kg, kaolin 1.5kg, talcum powder 4kg, diethylene glycol Butyl ether 1.5kg, wetting agent 0.6kg, leveling agent 0.6kg, defoamer 0.25kg, triethylamine 0.8kg, hydroxyethyl cellulose 0.9kg, hydrophobic alkali-swellable acrylic thickener 1.7kg, water 60 ㎏.

[0044] Preparation Process

[0045]1. Mixing: Add the measured polyoxypropylene glycol and MDI polyurethane emulsion into the dispersion tank and stir at 400-500 rpm, then add triethylamine, diethylene glycol butyl ether, wetting agent, and leveling agent , defoamer and continue to stir for 12 minutes.

[0046] 2. Dilution: Add lignocellulose, microcrystalline cellulose, organic elastic matting powder, titanium dioxide, kaolin, and talcum powder into another container and slowly dilute and dissolve with water.

[0047] 3. Dispersio...

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Abstract

The invention discloses a preparation method of water leather matting and mending paste. In the preparation method, a water polyurethane emulsion is used as a basic emulsion of the matting and mending paste, wood cellulose, microcrystalline cellulose, organic elastic matting powder, titanium dioxide and the like are used as a basic aggregate, and other additives are added to form the matting and mending paste by high-speed dispersion grinding. The water leather matting and mending paste comprises the following components: water polyurethane emulsion, wood cellulose, microcrystalline cellulose, organic elastic matting powder, titanium dioxide, kaolin, talc, film-forming coalescent, a wetting agent, a leveling agent, a defoamer, a PH value modifier, a thickener and water. The preparation method comprises the following steps of: mixed preparation, dilution, dispersion, grinding and obtaining the water leather matting and mending paste product. The water leather matting and mending paste has better physical strength, wear resistance, winding resistance, solvent resistance, yellowing resistance, aging resistance, and good extensibility and resilience, has excellent anti-freezing and heat-resistant capacities, and air permeability, especially solves the problems that the propylene acid emulsion is sticky due to heat and is crisp due to cold, and can be widely applied to point mending and large-area mending of various types of leather.

Description

technical field [0001] The invention belongs to the technical field of paint production, and in particular relates to the leather surface finishing technology. Background technique [0002] Polyurethane is the abbreviation of polyurethane, which is characterized by repeated urethane structural units on the main chain of the polymer—NHCOO---polyurethane is known as a “cuttable” polymer, and water-based polyurethane is polyurethane dissolving Or dispersed in water to form a binary glue system, water-based polyurethane emulsion has been widely used in leather finishing. The water-based leather matting repair paste based on water-based polyurethane emulsion has the following characteristics: (1) It has good compatibility with additives such as pigment paste. ⑵ High bonding strength with leather, aging resistance, light resistance, water resistance, dry and wet rub resistance, cold resistance and heat resistance. ⑶ The leather after repairing and filling is bright and natural, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D175/08C09D101/02C09D197/02C09D7/12C14C11/00
Inventor 张福义闫克辉刘杰华马福兰孙海园刘娅林陈玉国
Owner SHANDONG TIANQING TECH DEV
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