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PU smell removing polyurethane coating as well as preparation and application thereof

A polyurethane coating and odor-cleaning technology, which is applied in the coating field, can solve the problems such as product environmental protection indicators not up to standard, and achieve the effects of excellent fullness, low odor and high hardness

Active Publication Date: 2014-06-25
QINGDAO ZHANCHEN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After people decorate their houses, most of them require to check and accept the houses according to the GB / T50325-2009 standard. If the products provided by the decoration companies or furniture factories have obvious irritating smell, it may lead consumers to suspect that the environmental protection indicators of the products do not meet the standards, thus requiring testing and resulting in many disputes

Method used

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  • PU smell removing polyurethane coating as well as preparation and application thereof
  • PU smell removing polyurethane coating as well as preparation and application thereof
  • PU smell removing polyurethane coating as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Example 1: Preparation of acrylic modified polyester resin

[0060] 1) Put 1000mL (860g) of xylene into the flask, heat to 140°C under reflux for half an hour, add 10% methyl methacrylate, 1% acrylic acid, 15% ethyl methacrylate according to the weight ratio of xylene , 15% butyl methacrylate, 20% styrene, half of the TBPB1% mixture, drip it in 4h hours, keep it for 1h; then add the remaining TBPB and xylene mixture (including TBPBwt50%), and take 40min After dripping, keep warm for 1h; cool down and discharge;

[0061] 2) Mix 20 parts of acrylic prepolymer, 15 parts of adipic acid, 20 parts of phthalic anhydride, 20 parts of glycerol, 2 parts of maleic anhydride, and 50 parts of xylene into a four-necked flask, add carbon dioxide gas, heat up, and reflux Keep the temperature at 150℃ for 2h, then heat it up to 220~230℃ at a rate of 10~12℃ / hour, keep it for esterification until the acid value≤10mgKOH / g, then cool down and discharge. The product is labeled S5051.

[0062] The...

Embodiment 2

[0064] Prepare PU pure odor polyurethane coating according to the following ratio:

[0065] A component: S505189kg, butyl acetate 5kg, DeuRheo2290.5kg, Defom53000.3kg, EFKA-E40610.3kg, BYK-3060.4kg, amorphous silica 4.6kg;

[0066] B component: BAYER L-7510kg, Desmodur HL60kg, butyl acetate 25kg;

[0067] C component: 25kg of butyl acetate, 10kg of dimethyl carbonate, 10kg of propylene glycol methyl ether acetate, 5kg of xylene;

[0068] The mixing weight ratio of component A, component B and component C is 100:80:50.

[0069] The preparation method includes the following steps:

[0070] (1) Preparation of component A:

[0071] 1) Put the S5051, butyl acetate, and EFKA-E4061 in the above ratio into the reactor and stir at 600r / min for 30min to prepare a resin mixture;

[0072] 2) Add the above-mentioned amorphous silica and DeuRheo229 slowly into the reactor with the resin mixture, and disperse for 20min at a speed of 900r / min;

[0073] 3) Add Defom5300 and BYK-306 in the above-mentioned ra...

Embodiment 3

[0080] Prepare PU pure odor polyurethane coating according to the following ratio:

[0081] A component: S5051 85kg, butyl acetate 6kg, DeuRheo229 0.6kg, BYK-065 0.1kg, EFKA-4010 0.4kg, BYK-333 0.5kg, amorphous silica 7.4kg;

[0082] B component: BAYER L-75 20kg, Desmodur HL 40kg, butyl acetate 20kg;

[0083] C component: 15kg of butyl acetate, 6kg of dimethyl carbonate, 6kg of propylene glycol ethyl ether acetate, 3kg of xylene;

[0084] The mixing weight ratio of component A, component B and component C is 100:100:30.

[0085] The preparation method includes the following steps:

[0086] (1) Preparation of component A:

[0087] 1) Put the S5051, butyl acetate, and EFKA-4010 in the above ratio into the reactor and stir at 800r / min for 20min to prepare a resin mixture;

[0088] 2) Add amorphous silica and DeuRheo229 slowly to the reactor with the resin mixture, and disperse at 700r / min for 30min;

[0089] 3) Add BYK-065 and BYK-333 to the reactor, and stir at 800r / min for 20min;

[0090] 4) ...

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Abstract

The invention provides a PU smell removing polyurethane coating which consists of a component A, a component B and a component C, wherein the component A comprises a crylic acid modified polyester resin, n-butyl acetate, a defoaming agent, a dispersing agent, a leveling agent, a delustering agent and an anti-settling agent; the component B comprises polyisocyanates, a co-polymer and n-butyl acetate; the component C comprises n-butyl acetate, dimethyl carbonate, propylene glycol monomethyl ether acetic ester and dimethylbenzene. According to the PU smell removing polyurethane coating, by modifying the double-component hydroxy acrylic resin, the characteristic that the hydroxy acrylic resin is rapid in releasing a solvent is maintained, and the fullness of the hydroxy acrylic resin is remarkably improved; the PU smell removing polyurethane coating provided by the invention not only has the characteristics of rapid drying speed, high hardness and excellent fullness, but also is small in smell. A good synergistic effect of various components of the coating is brought into play, and particularly through interaction and balancing of the resin, the solvent and the hardening agent, the coating is free of conspicuous smell after the coating is constructed and dried for 48 hours.

Description

Technical field [0001] The invention relates to the field of coatings, in particular to a PU pure odor polyurethane coating and a preparation method and application thereof. Background technique [0002] With the in-depth development of reform and opening up, people's living standards have been significantly improved, and the development of the furniture industry is also changing with each passing day. Thirty years ago, ordinary families got married and bought furniture by asking carpenters to make them at home. It was a typical small workshop. At that time, a very small number of specialized furniture factories produced furniture for government offices. The export furniture industry drove the development of the furniture industry 20 years ago. Countries such as Europe and the United States transferred labor-intensive industries to China due to cost pressures and environmental pressures. Since 1990, coastal export-oriented furniture manufacturing has grown from scratch, from weak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D7/12C08G63/52C08F220/18C08F220/14C08F220/06C08F212/08
Inventor 袁东兴罗先平陈寿生
Owner QINGDAO ZHANCHEN NEW MATERIAL
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