High-solid-content low-viscosity odorless alkyd resin as well as preparation method and application thereof

A clean-odor alkyd resin, low-viscosity technology, used in coatings, polyurea/polyurethane coatings, etc., can solve problems such as residual odor, and achieve the effects of increasing cross-linking density, stable and controllable reaction process, and simple operation.

Active Publication Date: 2021-08-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, there are still big problems in the existing technology to completely solve the problem of residual odor after furniture coating paint dries

Method used

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  • High-solid-content low-viscosity odorless alkyd resin as well as preparation method and application thereof
  • High-solid-content low-viscosity odorless alkyd resin as well as preparation method and application thereof
  • High-solid-content low-viscosity odorless alkyd resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Preparation of a high-solid low-viscosity net-taste alkyd resin

[0052] In parts by mass, the raw material components and consumption are as follows in Table 1

[0053] Table 1

[0054]

[0055] The preparation process comprises the following steps:

[0056] Add soybean oleic acid, ricinoleic acid, phthalic anhydride, pentaerythritol, 1,4-butanediol, benzoic acid, polyaldehyde resin KR-A81, maleic anhydride, p-tert-butyl Base benzoic acid, 3 parts of xylene, keep warm at 170°C for 3h, keep warm at 215°C for 3h, when the acid value is lower than 15mgKOH / g, and the viscosity reaches the preset viscosity, add 10 parts of xylene and 5 parts of butyl acetate to dilute, Obtain high solid content and low viscosity net taste alkyd resin.

[0057] (2) The properties of the high-solid low-viscosity net-odor alkyd resin are shown in Table 2.

[0058] Table 2

[0059]

[0060]

[0061] (3) Preparation and properties of two-component polyurethane wood coatings

...

Embodiment 2

[0076] (1) Preparation of a high-solid low-viscosity net-taste alkyd resin

[0077] In parts by mass, the raw material components and consumption are as shown in Table 5

[0078] table 5

[0079]

[0080]

[0081] The preparation process comprises the following steps:

[0082] Add soybean oleic acid, coconut oil acid, phthalic anhydride, pentaerythritol, trimethylolpropane, ethylene glycol, diethylene glycol, tannic acid, polyaldehyde resin KR-80F, Maleic anhydride, 5 parts of xylene, keep warm at 190°C for 2 hours, slowly raise the temperature, keep warm at 200°C for 5 hours, wait until the acid value is lower than 15mgKOH / g, the viscosity reaches the preset viscosity, cool down to 80°C, add 5 parts of xylene, 4 parts of butyl acetate and 4 parts of ethyl acetate are diluted to obtain a high-solid low-viscosity net-odour alkyd resin.

[0083] (2) The properties of the high-solid low-viscosity net-odour alkyd resin are shown in Table 6.

[0084] Table 6

[0085] ...

Embodiment 3

[0096] (1) Preparation of a high-solid low-viscosity net-taste alkyd resin

[0097] In parts by mass, the raw material components and consumption are as shown in Table 9

[0098] Table 9

[0099]

[0100]

[0101] The preparation process comprises the following steps:

[0102] Add coconut oil acid, ricinoleic acid, phthalic anhydride, pentaerythritol, ditrimethylolpropane, 1,4-butanediol, 2-butyl-2-ethyl- 1,3-propanediol, benzoic acid, polyaldehyde resin KR-A101, rosin, succinic anhydride, 5 parts xylene, keep warm at 180°C for 2.5h, slowly heat up, keep warm at 210°C for 4h, until the acid value is lower than 15mgKOH / g, the viscosity reaches the preset viscosity, lower the temperature to 80°C, add 5 parts of xylene, 5 parts of ethyl acetate, and 4 parts of propylene glycol methyl ether acetate to dilute to obtain a high solid content and low viscosity net odor alkyd resin.

[0103] (2) The properties of the high-solid low-viscosity net-odour alkyd resin are shown in...

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Abstract

The invention discloses high-solid-content low-viscosity odorless alkyd resin as well as a preparation method and application thereof, and the high-solid-content low-viscosity odorless alkyd resin is prepared from the following raw materials in parts by mass: 29.5 to 33.5 parts of vegetable oil fatty acid, 18.5 to 21.5 parts of anhydride, 2.5 to 4.9 parts of monobasic acid, 20.3 to 24.1 parts of polyhydric alcohol, 2 to 5 parts of aldehyde resin, 3 to 5 parts of xylene and 14 to 15 parts of organic solvent. The structure and performance of the prepared resin are easy to control and adjust, the prepared resin is used for preparing a two-component polyurethane wood lacquer coating, the hardness reaches up to H or above, the adhesive force is grade 0, the residual VOC is lower than 5g/L after a paint film is dried for 2 days, and the resin is odorless and environmentally friendly and has excellent chemical resistance and thermal stability.

Description

technical field [0001] The invention belongs to the technical field of two-component polyurethane wood ware, and relates to an alkyd resin, in particular to a preparation method and application of a high-solid-content, low-viscosity, clean-odour alkyd resin. Background technique [0002] Two-component polyurethane wood coatings have excellent physical and chemical properties and are widely used in wooden furniture and wooden floors. According to the different components containing hydroxyl groups, it can be divided into acrylic polyurethane, alkyd polyurethane, polyacid polyurethane, polyether polyurethane, epoxy polyurethane and other varieties. [0003] Since the beginning of the 21st century, with the rapid development of the global economy and the gradual strengthening of environmental protection by governments of various countries, countries all over the world have attached great importance to the use of environmentally friendly coatings that are different from traditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/49C09D175/14
CPCC08G63/48C09D175/14
Inventor 瞿金清梅运来马冠豪
Owner SOUTH CHINA UNIV OF TECH
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