Preparation method of acrylic-modified water-based tall oil alkyd resin emulsion

An alkyd resin emulsion and alkyd resin technology, applied in the field of chemical materials, can solve problems such as residues, polyxylene, paint amine residues, etc., and achieve the effects of being beneficial to resource reuse, fast drying at room temperature, and improving water resistance

Active Publication Date: 2012-11-28
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since xylene is added as a solvent in the synthesis process, there will be more xylene residues in the product, and the synthesis process is relatively complicated and time-consuming. The final method of water-based acrylic modified alkyd resin adopts amine And method, so there will be amine residue in the paint, with a pungent smell

Method used

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  • Preparation method of acrylic-modified water-based tall oil alkyd resin emulsion
  • Preparation method of acrylic-modified water-based tall oil alkyd resin emulsion
  • Preparation method of acrylic-modified water-based tall oil alkyd resin emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1:Preparation of polyester intermediate A

[0036] Add 88g of terephthalic acid-5-sodium sulfonate, 119.6g of neopentyl glycol, 36.6g of deionized water and 0.122 g monobutyltin oxide catalyst, pass through nitrogen protection, first raise the temperature to 120°C, then raise the temperature to 150°C after one hour, then raise the temperature to 170°C at a rate of 10°C / 10min for 3 hours, heat at 200°C at constant temperature, and Take a sample to measure the acid value. When the acid value drops below 3 mgKOH / g, stop the reaction, pour the mixed material into the mortar while it is hot, place it in the dry bottle for a period of time, cool it down, grind it to powder, and then dry it stored under conditions.

Embodiment 2

[0037] Example 2 : Preparation of polyester intermediate B

[0038] Add 88g of isophthalic acid-5-sodium sulfonate, 61g of ethylene glycol, 26.5g of deionized water and 0.1g di Butyl tin oxide catalyst, protected by nitrogen gas, firstly heated to 120°C, then raised to 150°C after one hour, then heated to 180°C at a rate of 10°C / 10min for 3 hours, heated at 200°C, and tested regularly When the acid value drops below 3 mgKOH / g, stop the reaction, pour the mixed material into the mortar while it is hot, put it in the dry bottle for a period of time, cool it down, grind it to powder, and then put it under dry conditions store.

Embodiment 3

[0039] Example 3 : Aqueous Alkyd Resin Dispersion A Preparation:

[0040] The polyester intermediate A18g prepared in Example 1, 35.66g of tall oil fatty acid, 10.05g of phthalic anhydride, 8.25g of glycerol, 2.4g of isophthalic acid, and 0.041g of monobutyltin oxide were added to the In the four-necked flask with water separator, condenser, stirrer and nitrogen device, heat the reaction in an oil bath, and at the same time pass nitrogen protection, start the stirrer at the beginning of the reaction, first raise the temperature to 120°C, and then increase the temperature to 10°C / 10min The temperature was increased to 210°C for three hours, and the temperature was kept at 230°C until the acid value was less than 15mgKOH / g to stop the reaction. Cool the alkyd resin to 80°C, slowly add 95g of deionized water, stir at about 2600r / min, stir and disperse for 30 minutes, cool down and discharge. The solid content of the aqueous dispersion is about 48%.

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Abstract

The invention relates to a preparation method of an acrylic-modified water-based tall oil alkyd resin emulsion, which comprises the following steps: (1) reacting dibasic acid with -SO3M group with dibasic alcohol to prepare a polyester intermediate; (2) reacting the polyester intermediate, vegetable oil fatty acid, polybasic alcohol and polybasic acid, and dispersing with deionized water to prepare an alkyd resin water dispersion; and (3) reacting an acrylic monomer and the alkyd resin water dispersion to prepare the acrylic-modified water-based tall oil alkyd resin. The acrylic-modified water-based tall oil alkyd resin prepared by the method has the advantages of no emulsifier, almost zero VOC (volatile organic compound) content, low viscosity, high storage stability, high solid content, high drying and curing rate and high hardness, does not need an amine neutralizer for neutralization, and can be used in metal anticorrosive paint, woodware paint and the like. The coated film has the advantages of quick drying, high hardness, favorable mechanical properties and high corrosion resistance.

Description

technical field [0001] The invention belongs to the field of chemical materials and relates to a preparation method of water-based acrylic acid modified tall oil alkyd resin emulsion. Background technique [0002] Alkyd resin coatings have the advantages of good comprehensive performance, cheap and easy-to-obtain raw materials, full and bright coating film, good adhesion, and easy construction. Traditional alkyd resin coatings mostly use organic solvents as the dispersion medium, and the coatings contain a large amount of organic solvents. As people's awareness of environmental protection continues to increase, countries have successively issued laws and regulations to limit the emission of VOC (Volatile Organic Compound) and HAPS (Hazardous Air Pollutants), such as the US Regulation 66, Germany AT-Luft Laws and regulations, etc. In 2001, my country formulated mandatory safety standards for 10 kinds of interior building decoration materials, and in 2008 established the "Nati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F220/14C08F220/18C08F212/08C08F4/30C08G63/78C08G63/49
Inventor 刘娅莉刘持军贾元峰匡伟杨锦
Owner HUNAN UNIV
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