Acid alcohol resin for light-smell dope and preparation method of acid alcohol resin

An acid-alcohol resin and coating technology, used in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as unpleasant, difficult to eliminate odor, nausea, etc., and achieve good adhesion, stable gloss, and leveling. good effect

Active Publication Date: 2013-12-11
山东奔腾漆业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the PU two-component polyurethane coatings and NC nitro coatings produced by using the existing alkyd resins generally have unpleasant odors after construction, especially the strong sour smell. The root cause is that the existing alkyd resins Usually mixed fatty acids are used for synthesis. On the one hand, the mixed fatty acids themselves have a certain sour taste. On the other hand, the mixed fatty acid smells stronger during production, processing, and storage. Therefore, there are still more or less acid in the process of synthesizing alkyd resin. Smell free fatty acid, it is difficult to eliminate the peculiar smell, and the bad sour smell of the prepared coating will be volatilized when it is used
Even after the film dries, there is still a lingering unpleasant smell, which makes the user feel very unpleasant and even nausea

Method used

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  • Acid alcohol resin for light-smell dope and preparation method of acid alcohol resin
  • Acid alcohol resin for light-smell dope and preparation method of acid alcohol resin
  • Acid alcohol resin for light-smell dope and preparation method of acid alcohol resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 13.40 parts of coconut oil, 11.66 parts of glycerin and 4.67 parts of trimethylolpropane into a 1000ml four-necked flask equipped with a stirrer, a reflux condenser, and a thermometer, pass into nitrogen for protection, start stirring and gradually heat up, until the temperature When the temperature rises to 120°C, add 0.01 part of lithium hydroxide, then raise the temperature to 235°C until the alcoholysis is qualified, then add 1.17 parts of dimer acid, 0.77 parts of succinic acid, 0.58 parts of maleic anhydride, 11.66 parts of phthalic anhydride, m- 11.66 parts of phthalic acid, 2.33 parts of terephthalic acid, 1.75 parts of triethylene glycol, 1.17 parts of neopentyl glycol, 1.17 parts of 2-methyl-1,3-propanediol, 5 parts of xylene, and then heat up to 200°C React until the acid value is below 18mgKOH / g, lower the temperature to 110°C, add 33.00 parts of xylene, stir evenly, and filter the material to obtain an acid value of less than 18mgKOH / g, a non-volatile co...

Embodiment 2

[0026] Add 21.2 parts of rapeseed oil, 5.3 parts of coconut oil, 5.3 parts of trimethylolethane, and 8.48 parts of pentaerythritol into a 1000ml four-necked flask equipped with a stirrer, reflux condenser and thermometer, and feed carbon dioxide gas for protection and start stirring And gradually heat up, when the temperature rises to 120°C, add 0.01 part of sodium hydroxide, then raise the temperature to 240°C until the alcoholysis is qualified, then add 1.06 parts of adipic acid, 0.53 parts of sebacic acid and 15.89 parts of phthalic anhydride when the temperature is lowered to 150°C , 4.77 parts of diethylene glycol, 0.85 parts of neopentyl glycol, 1.59 parts of 1,3-butanediol, 0.85 parts of 1,2-propanediol and 4 parts of xylene, and then heated to 210 ° C to react to an acid value of 18 mgKOH / g Below, lower the temperature to 110°C, add 15 parts of toluene and 15.17 parts of butyl acetate, stir evenly and filter the material to obtain an acid value of less than 18 mgKOH / g, ...

Embodiment 3

[0028] Add 9.37 parts of soybean oil, 11.11 parts of castor oil, 16.66 parts of trimethylolethane, and 2.22 parts of trimethylolpropane into a 1000ml four-neck flask equipped with a stirrer, reflux condenser and thermometer, and pass in carbon dioxide gas for protection , start stirring and gradually heat up. When the temperature rises to 120°C, add 0.02 parts of calcium hydroxide, then raise the temperature to 245°C until the alcoholysis is qualified, then add 29.3 parts of phthalic anhydride and 2.22 parts of neopentyl glycol after cooling down to 150°C. 4 parts of toluene, then heated up to 220 ° C to react until the acid value is below 18 mgKOH / g, cooled to 130 ° C, added 12.9 parts of xylene and 12.2 parts of butyl acetate, stirred evenly, filtered out the material, and the acid value was less than 18 mgKOH / g, The non-volatile content is 70%, and the color is less than 2# (iron-cobalt colorimeter). Alkyd resin for low-odor paint.

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Abstract

The invention provides acid alcohol resin for light-smell dope, which comprises the following components in parts by weight: 13.4-26.5 parts of vegetable oil, 9.6-23.4 parts of polyhydric alcohol, 0-16 parts of dihydric alcohol, 16.6-40 parts of diacid, 0.01-0.02 parts of catalyst and 18.4-38 parts of solvent. The alkyd resin is synthesized by the pure natural vegetable oil, and the used vegetable oil is basically free from free fatty acid, so that unpleasant smells such as an acid smell cannot be generated; after two-component polyurethane paint or nitrolacquer prepared by the alkyd resin is applied on the surface of wood for 24h, a light-smell effect or an odorless effect can be achieved; and the two-component polyurethane paint or the nitrolacquer prepared by the alkyd resin is good in paint film ply adhesion and levelling property, high in rigidity, and stable in luster.

Description

technical field [0001] The invention belongs to the field of paint raw materials, in particular to an acid-alcohol resin for low-odor paint and a preparation method thereof. Background technique [0002] Wood coating is a kind of coating applied to the surface of wood, which plays the role of protection and decoration. At present, the most common PU two-component polyurethane coatings, NC nitro coatings, PE unsaturated polyester coatings, UV ultraviolet curing coatings and There are five types of AC acid-cured coatings; among them, PU two-component polyurethane coatings and NC nitro coatings are the most used in the domestic market. In the two products of PU polyurethane coatings and NC nitro coatings, alkyd resins are used in a very large amount. [0003] However, the PU two-component polyurethane coatings and NC nitro coatings produced by using the existing alkyd resins generally have unpleasant odors after construction, especially the strong sour smell. The root cause is ...

Claims

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Application Information

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IPC IPC(8): C08G63/676C08G63/672C08G63/21C08G63/49C09D175/06C09D175/14C09D101/18C09D167/08
Inventor 李琰辉杨树民刘计锋
Owner 山东奔腾漆业股份有限公司
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