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Water-based quick-drying hydrophobic alkyd resin dispersion and preparation method thereof

A technology of alkyd resin and hydrophobic alcohol, which is applied in coatings, polyester coatings, etc., and can solve problems such as poor metal protection ability, poor salt spray resistance, and high product viscosity

Pending Publication Date: 2019-06-04
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in actual production and application, water-based alkyd coatings still face many problems that need to be solved urgently, for example: 1. The slow drying rate of the product coating seriously affects the delivery time; 2. The product has poor water resistance and salt spray resistance and poor metal protection ability ;3. The problem of poor stability to metal ions and poor storage stability to active pigments and fillers; 4. Too high product viscosity, etc.

Method used

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  • Water-based quick-drying hydrophobic alkyd resin dispersion and preparation method thereof
  • Water-based quick-drying hydrophobic alkyd resin dispersion and preparation method thereof
  • Water-based quick-drying hydrophobic alkyd resin dispersion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Preparation of alkyd resin:

[0027] The composition and proportion of alkyd resin are as follows:

[0028]

[0029] Preparation:

[0030] Put pentaerythritol, neopentyl glycol, bisphenol A, soybean oil fatty acid, tall oleic acid, methyl isobutyl ketone into a clean reactor, fill with nitrogen and raise the temperature to 210°C to collect condensed water, and keep the temperature until the material turns Transparent; cool down to 160°C, add isophthalic acid, then raise the temperature to 220°C, keep the temperature until the acid value of the polymer is less than 10, the viscosity of the format tube is 50-90s (dilute to 80% curing measurement), cool down after passing The material is discharged to obtain an alkyd resin polymer.

[0031] 2. Preparation of Acrylic Modified Fatty Acid Polymers

[0032] The composition and proportion of acrylic acid modified fatty acid polymer are as follows:

[0033]

[0034] The preparation method is as follows:

[0035] Pu...

Embodiment 2

[0042] 1. The preparation method of preparing alkyd resin is the same as embodiment 1.

[0043] 2. Preparation of Acrylic Modified Fatty Acid Polymers

[0044] The composition and proportion of acrylic acid modified fatty acid polymer are as follows:

[0045]

[0046] The preparation method is as follows:

[0047] Put the dehydrated ricinoleic acid into the reaction kettle, fill it with nitrogen, and raise the temperature to 110°C. At this temperature, a mixture of 2-ethylhexyl acrylate and di-tert-butyl peroxide was added dropwise for 5 hours. After the dropwise addition, the temperature was raised to 145° C. and kept for 1 hour. After the format tube viscosity is 9.2-15.7s (dilution to 80% solidification measurement) is qualified, the temperature is lowered and the material is discharged to obtain the acrylic acid modified fatty acid polymer.

[0048] 3. Water-based fast-drying hydrophobic alkyd resin dispersion

[0049] The composition and ratio of the water-based q...

Embodiment 3

[0054] 1. The preparation method of preparing alkyd resin is the same as embodiment 1.

[0055] 2. Preparation of Acrylic Modified Fatty Acid Polymers

[0056] The composition and proportion of acrylic acid modified fatty acid polymer are as follows:

[0057]

[0058] The preparation method is as follows:

[0059] Put periodic oleic acid into the reaction kettle, fill it with nitrogen, and raise the temperature to 120°C. At this temperature, the mixture of octadecyl methacrylate and di-tert-butyl peroxide was added dropwise for 5.5 hours. After the dropwise addition, the temperature was raised to 155° C. and kept for 2 hours. After the format tube viscosity is 9.2-15.7s (dilution to 80% solidification measurement) is qualified, the temperature is lowered and the material is discharged to obtain the acrylic acid modified fatty acid polymer.

[0060] 3. Water-based fast-drying hydrophobic alkyd resin dispersion

[0061] The composition and ratio of the water-based quick-...

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Abstract

The invention belongs to the field of resin for water-based paint and specifically relates to water-based quick-drying hydrophobic alkyd resin dispersion and a preparation method thereof. The water-based quick-drying hydrophobic alkyd resin dispersion is formed by polymerization of the following ingredients: one or more alkyd resins, one or more acrylic modified fatty acid polymers, and at least one urethane connector, and contains no surfactant and the VOC content is less than 1%. By introducing a hydrophobic polyurethane group into the water-based quick-drying hydrophobic alkyd resin dispersion, viscosity of the dispersion is reduced, viscosity is not more than 1000 centipoises, and the dispersion has the solid content of more than 40%. The product has a more stable structure and can beapplied to railway car paint, agricultural machinery paint, auto part paint, log cabin paint and open platform coloring agent.

Description

technical field [0001] The invention belongs to the field of resins for water-based coatings, and in particular relates to a water-based quick-drying hydrophobic alkyd resin dispersion and a preparation method thereof. Background technique [0002] At present, water-based coatings include a large number of product categories, such as water-based alkyd resins, water-based epoxy resins, water-based acrylic resins, water-based polyurethane resins, water-based polyester resins, etc. These resins improve the performance of water-based coatings in different aspects. Among them, water-based alcohol Acid resins are widely used in the coatings industry. They have the characteristics of easy availability of synthetic raw materials and environmental protection, excellent gloss characteristics, and outstanding ability to adhere to various substrates. [0003] However, in actual production and application, water-based alkyd coatings still face many problems that need to be solved urgentl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/03C08L47/00C08L67/08C08K5/29C09D147/00C09D167/08C09D7/63
Inventor 李辉宁叶震李海岩郑齐董立志
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD