Odorless polyurethane wood lacquer and application thereof

A polyurethane and wood paint technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems that odor and toxicity cannot be eliminated, the product does not have a net odor, and is not conducive to wide use, so as to improve odor release and enhance Release performance, release enhancement effect

Active Publication Date: 2014-04-23
SHANGHAI CHANGRUNFA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the wood paint dry glue and volatile gas described in this patent take a long time, and still contain residual odor, and the production cost is relatively high
[0006] Patent CN1028760909A discloses the content of a kind of floor paint, which specifically includes soybean oil alkyd resin, limonene, defoamer, leveling agent, wetting agent, etc. The floor paint described in this patent still contains certain odor and toxicity Cannot be eliminated, not conducive to widespread use
[0007] Patent CN102286246A: A short-oil alkyd resin and low-odor polyurethane paint. By improving the three-dimensional structure of the alkyd resin molecular chain, the release performance of the product during the film formation process is improved, but the product does not achieve the real clean smell

Method used

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  • Odorless polyurethane wood lacquer and application thereof
  • Odorless polyurethane wood lacquer and application thereof
  • Odorless polyurethane wood lacquer and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] A clean odor polyurethane wood lacquer primer is prepared, which includes a main agent and a curing agent. Wherein, based on the total weight of the primer, the component content of the primer main agent is:

[0071] Alkyd resin: 70%

[0072] Nitrocellulose: 7%

[0073] Solvent: 7%

[0074] Dispersant: 1%

[0075] Anti-sedimentation agent: 1%

[0076] Filler: 13%

[0077] Leveling agent: 0.5%

[0078] Defoamer: 0.5%.

[0079] The components of the fixing agent for the primer are:

[0080] HDI trimer: 20%

[0081] TDI trimer: 40%

[0082] Ethyl acetate: 20%

[0083] Butyl acetate: 20%.

[0084] Wherein, the alkyd resin includes alkyd resin A with a number average molecular weight of 3500 and alkyd resin B with a number average molecular weight of 2000, and its component content is based on the total weight of the main agent, which is:

[0085] Alkyd resin A 50%

[0086] Alkyd B 20%.

[0087] Described solvent is ethyl acetate.

[0088] Wherein, the dispers...

Embodiment 2

[0091] A clean odor polyurethane wood lacquer primer is prepared, which includes a main agent and a curing agent. Wherein, based on the total weight of the primer, the component content of the primer main agent is:

[0092] Alkyd resin: 80%

[0093] Nitrocellulose: 2%

[0094] Solvent: 5%

[0095] Dispersant: 1%

[0096] Anti-sedimentation agent: 1%

[0097] Filler: 10%

[0098] Leveling agent: 0.5%

[0099] Defoamer: 0.5%.

[0100] The components of the fixing agent for the primer are:

[0101] HDI trimer: 20%

[0102] TDI trimer: 35%

[0103] Ethyl acetate: 25%

[0104] Butyl acetate: 20%.

[0105] Wherein, the alkyd resin includes an alkyd resin A with a number average molecular weight of 3200 and an alkyd resin B with a number average molecular weight of 2500, and its component content is based on the total weight of the main agent, which is:

[0106] Alkyd A 55%

[0107] Alkyd B 25%.

[0108] Described solvent is ethyl acetate.

[0109] Wherein, the dispers...

Embodiment 3

[0112] Prepare a kind of polyurethane wood lacquer topcoat of clean smell, take the gross weight of topcoat as a basis, wherein, the main agent component ratio of topcoat is:

[0113] Alkyd resin: 78%

[0114] Nitrocellulose: 2%

[0115] Solvent: 10%

[0116] Dispersant: 1%

[0117] Matting powder: 5%

[0118] Anti-settling agent: 3%

[0119] Leveling agent: 0.6%

[0120] Defoamer: 0.4%.

[0121] The curing agent component ratio of the topcoat is:

[0122] HDI trimer: 15%

[0123] TDI trimer: 35%

[0124] Ethyl acetate: 20%

[0125] Butyl acetate: 30%.

[0126] Wherein, the number average molecular weight of the alkyd resin is 3000.

[0127] Described solvent is the mixture of ethyl acetate and butyl acetate, wherein is based on the gross weight of topcoat main agent, and the component ratio of the ethyl acetate that adds and butyl acetate is:

[0128] Ethyl acetate: 5%

[0129] Butyl acetate: 5%.

[0130] Wherein, the dispersant is modified polyurethane, the ant...

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Abstract

The invention discloses odorless polyurethane wood lacquer. The odorless polyurethane wood lacquer comprises a main agent and a curing agent; by taking the total weight of the main agent as reference, the main agent comprises the following components: 50-90% of alkyd resin, 0.5-7% of nitrocellulose, 3-15% of solvent and 2-16% of auxiliaries, wherein the number-average molecular weight of the alkyd resin is 1000-4000; and the main agent further comprises packing. The curing agent contains an HDI (hexamethylene diisocyanate) trimer, a TDI (toluene diisocyanate) trimer, ethyl acetate and butyl acetate. The invention further discloses an application of the odorless polyurethane wood lacquer, and the odorless polyurethane wood lacquer can be used for manufacturing primer paint and / or finish paint of any one of wood furniture and floors. The odorless polyurethane wood lacquer disclosed by the invention comprises the alkyd resin and the nitrocellulose and can increase the three-dimensional structure of a molecular chain of the alkyd resin, improve the odor volatilization speed, upgrade the odor release property, eliminate the residual odor in a paint film and further achieve an odorless effect.

Description

technical field [0001] The invention relates to a polyurethane wood varnish, in particular to a polyurethane wood varnish mainly composed of alkyd resin and its application. Background technique [0002] Wood paint refers to a type of resin paint used on wood products, including polyester, polyurethane paint, etc., which can be divided into water-based and oil-based. According to gloss, it can be divided into high gloss, semi-matte and matte. According to the application, it can be divided into furniture paint, floor paint and so on. [0003] Among them, polyurethane paint is widely used in wooden furniture and wooden floors because of its strong paint film, full luster, strong adhesion, water resistance, wear resistance, and corrosion resistance. Polyurethane paint, also known as polyurethane paint, can be divided into acrylic polyurethane, alkyd polyurethane, polyester polyurethane, polyether polyurethane, epoxy polyurethane and other varieties according to the different...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C09D175/06C09D7/12C08G18/79C08G18/42
Inventor蒲泽攀周烨
OwnerSHANGHAI CHANGRUNFA PAINT