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Novel water-based polyamido polyurethane wood paint and preparation method thereof

A technology based on polyurethane for wood coatings, which is applied in the field of coatings to achieve the effect of hard surface, good wear resistance and flexible coating film

Inactive Publication Date: 2015-04-22
ANQING HAOYE WATER PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, water-based coatings are still inferior to solvent-based coatings in terms of solvent resistance, hydrolysis resistance, abrasion resistance, and adhesion performance as wood coatings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1-preparation polyamide resin polyol

[0028] Raw material: dibasic acid: 35 grams of sebacic acid, 30 grams of adipic acid, 70 grams of dimer acid;

[0029] Diamines: 16 grams of hexamethylenediamine, 8 grams of cyclohexanediamine;

[0030] Alcoholamine: 40 grams of isopropanolamine;

[0031] Pyrrolidone 30 ml;

[0032] Antioxidant: 0.5 grams of triphenyl phosphite;

[0033] First add sebacic acid, dimer acid and adipic acid to the reactor, then add hexamethylenediamine and cyclohexanediamine at 150°C, control the reaction temperature at 150°C for 3 hours, then raise the temperature to 180°C, dehydrate for 30 Minutes, lower the temperature to 130°C, add isopropanolamine, and at the same time add triphenyl phosphite, react for 3 hours, add solvent pyrrolidone during the reaction to control the reaction viscosity. Then raise the temperature to 200° C. for dehydration for 30 minutes. After the dehydration is completed, raise the temperature to 220° C. and v...

Embodiment 2

[0034] Embodiment 2-preparation polyamide resin polyol

[0035] Raw material: dibasic acid: 40 grams of sebacic acid, 40 grams of adipic acid, 64 grams of dimer acid;

[0036] Diamines: 16 grams of hexamethylenediamine, 8 grams of cyclohexanediamine;

[0037] Alcoholamine: 24 grams of isopropanolamine;

[0038] Pyrrolidone 32 ml;

[0039] Antioxidant: 0.55 grams of triphenyl phosphite;

[0040] First add sebacic acid, dimer acid and adipic acid into the reactor, then add hexamethylenediamine and cyclohexanediamine at 140°C, control the reaction temperature at 150°C for 3 hours, then raise the temperature to 180°C, dehydrate for 30 Minutes, lower the temperature to 130°C, add isopropanolamine, and at the same time add triphenyl phosphite, react for 3 hours, add solvent pyrrolidone during the reaction to control the reaction viscosity. Then raise the temperature to 150° C. for dehydration for 30 minutes. After the dehydration is completed, raise the temperature to 200° C. an...

Embodiment 3

[0041] Embodiment 3-preparation polyamide resin polyol

[0042] Raw materials: Dibasic acid: 60 grams of sebacic acid, 84 grams of dimer acid;

[0043] Diamines: 20 grams of hexamethylenediamine, 16 grams of cyclohexanediamine;

[0044] Alcoholamine: 48 grams of isopropanolamine;

[0045] Pyrrolidone 45 ml;

[0046] Antioxidant: 0.6 grams of triphenyl phosphite;

[0047] First add sebacic acid and dimer acid into the reactor, then add hexamethylenediamine and cyclohexanediamine at 170°C, control the reaction temperature at 180°C for 3 hours, dehydrate for 30 minutes, cool down to 130°C, add iso Propanolamine, while adding triphenyl phosphite, reacted for 3 hours, during the reaction, solvent pyrrolidone was added to control the reaction viscosity. Then raise the temperature to 250° C. for dehydration for 30 minutes. After the dehydration is complete, raise the temperature to 230° C. while vacuuming to remove unreacted monomers and solvents. After 1 hour, the reaction was ...

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PUM

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Abstract

The invention belongs to the field of paints, and discloses a novel water-based polyamido polyurethane wood paint and a preparation method thereof. The wood paint is prepared from 25-35% of polyamide resin polyalcohol, 10-20% of high-molecular polyalcohol, 30-40% of isocyanate, 3-5% of dibasic alcohol chain extender, 2-4% of tribasic alcohol chain extender, 5-8% of dimethylolpropionic acid, 3-5% of triethylamine, 2-4% of post chain extender, 0.1-0.4% of organic bismuth, 0.2-0.5% of organosilicon coupling agent, 0.1-0.3% of thickener and 0.1-0.3% of leveling agent. The product water-based paint has the advantages of no odor, energy saving, environmental protection, high hardness, hard surface, favorable wear resistance, flexible, clear and transparent coated film, favorable yellowing resistance, favorable heat resistance, favorable high-temperature resistance, favorable hydrolysis resistance, high adhesive force and wet and greaseless coated film, and is simple and convenient for construction.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to a wood coating, in particular to a novel water-based polyamide-based polyurethane wood coating and a preparation method thereof. Background technique [0002] Wood products include solid wood and wood-based panel products. The coatings used on wood products are collectively referred to as wood coatings, which include furniture, doors and windows, wall panels, floors, daily necessities, wooden musical instruments, sporting goods, stationery, children's toys, etc. Choose coatings, generally speaking, wood coatings are mainly furniture coatings. At present, water-based polyurethane coatings that combine high performance and low VOC content can effectively control the composition and structure of coatings due to the cutting properties of polyurethane molecules, combined with new synthesis and cross-linking technologies, so that they have good low-temperature film-forming properties , high temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C08G18/76C08G18/66C08G18/60C08G18/48C08G18/44C08G18/32
CPCC09D175/06C08G18/3206C08G18/3228C08G18/348C08G18/4054C08G18/44C08G18/4854C08G18/603C08G18/6541C08G18/6659C08G18/6692C08G18/7671C09D175/08
Inventor 李传宏操昭云黎群李颖陈桂斌
Owner ANQING HAOYE WATER PAINT
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