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High-solid-content low-viscosity low-hydroxyl-value low-dilution-rate alkyd resin, and preparation method and applications thereof

A high-solid, low-viscosity, alkyd resin technology, applied in coatings, polyurea/polyurethane coatings, etc., to achieve the effect of reducing overall cost, reducing the content of free TDI, and reducing the amount of use

Active Publication Date: 2018-11-16
GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The alkyd resin currently on the market has a hydroxyl value of 110-160 based on 100% solids. Higher hydroxyl values ​​require more curing agents for cross-linking reactions. The substantial increase in the price of other materials has brought greater cost pressure to enterprises and limited use of free TDI content

Method used

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  • High-solid-content low-viscosity low-hydroxyl-value low-dilution-rate alkyd resin, and preparation method and applications thereof
  • High-solid-content low-viscosity low-hydroxyl-value low-dilution-rate alkyd resin, and preparation method and applications thereof
  • High-solid-content low-viscosity low-hydroxyl-value low-dilution-rate alkyd resin, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A high-solid, low-viscosity, low-hydroxyl, low-ratio alkyd resin is made of the following components by weight:

[0054] Oleic acid 21.2 parts

[0055] 2 parts benzoic acid

[0056] Polyacids:

[0057] 27.5 parts of phthalic anhydride

[0058] Maleic anhydride 1.5 parts

[0059] Polyol:

[0060] Pentaerythritol 13 parts

[0061] 3 parts trimethylolpropane

[0062] Propylene glycol 10 parts

[0063] Antioxidant:

[0064] Hypophosphorous acid 0.5 parts

[0065] Reflux solvent:

[0066] Xylene 3.3 parts

[0067] Dilute solvent:

[0068] Butyl acetate 18 parts

[0069] The preparation method of the above-mentioned high-solid, low-viscosity, low-hydroxyl and low-dilute alkyd resin comprises the following steps:

[0070] 1. Response.

[0071] Step 1: Weigh each raw material component according to the formula quantity, and set aside;

[0072] Step 2: 21.2 parts of oleic acid, 2 parts of benzoic acid, 27.5 parts of phthalic anhydride, 1.5 parts of maleic anhydrid...

Embodiment 2

[0079] A high-solid, low-viscosity, low-hydroxyl, low-ratio alkyd resin is made of the following components by weight:

[0080] 22 parts of oleic acid

[0081] 2.5 parts of benzoic acid

[0082] Polyacids:

[0083] 28 parts of phthalic anhydride

[0084] Maleic anhydride 1.4 parts

[0085] Polyol:

[0086] Pentaerythritol 14 parts

[0087] Trimethylolpropane 3.5 parts

[0088] Diethylene glycol 10.5 parts

[0089] Antioxidant:

[0090] Hypophosphorous acid 0.4 parts

[0091] Phosphite antioxidant 0.2 parts

[0092] Reflux solvent:

[0093] 4 parts xylene

[0094] Dilute solvent:

[0095] Butyl acetate 19 parts

[0096] The preparation method of the above-mentioned high-solid, low-viscosity, low-hydroxyl and low-dilute alkyd resin comprises the following steps:

[0097] 1. Response.

[0098] Step 1: Weigh each raw material component according to the formula quantity, and set aside;

[0099] Step 2: 22 parts of oleic acid, 2.5 parts of benzoic acid, 28 parts of p...

Embodiment 3

[0106] A high-solid, low-viscosity, low-hydroxyl, low-ratio alkyd resin is made of the following components by weight:

[0107] Oleic acid 19 parts

[0108] 3 parts benzoic acid

[0109] Polyacids:

[0110] 28.5 parts of phthalic anhydride

[0111] 2 parts maleic anhydride

[0112] Polyol:

[0113] Pentaerythritol 13.5 parts

[0114] Trimethylolpropane 3.8 parts

[0115] Ethylene glycol 10.8 parts

[0116] Antioxidant:

[0117] Hypophosphorous acid 0.2 part

[0118] Multivariate hindered aminophenol antioxidant 0.4 parts

[0119] Reflux solvent:

[0120] Xylene 4.5 parts

[0121] Dilute solvent:

[0122] Butyl acetate 18 parts

[0123] Propylene glycol methyl ether acetate 2 parts

[0124] The preparation method of the above-mentioned high-solid, low-viscosity, low-hydroxyl and low-dilute alkyd resin comprises the following steps:

[0125] 1. Response.

[0126] Step 1: Weigh each raw material component according to the formula quantity, and set aside;

[0127]...

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Abstract

The invention discloses a high-solid-content low-viscosity low-hydroxyl-value low-dilution-rate alkyd resin, and a preparation method and applications thereof, and belongs to the technical field of alkyd resin. The high-solid-content low-viscosity low-hydroxyl-value low-dilution-rate alkyd resin is prepared from, by weight, 17 to 23 parts of oleic acid, 2 to 5 parts of benzoic acid, 25 to 32 partsof a polyprotic acid, 22 to 32 parts of a polyol, 0.05 to 2 parts of an anti-oxidant, 2 to 6 parts of a backflow solvent, and 17 to 23 parts of a dilution solvent. The high-solid-content low-viscosity low-hydroxyl-value low-dilution-rate alkyd resin is high in solid content, low in viscosity, low in hydroxyl value, low in dilution rate, quick in curing, high in hardness, and less in smell. When the high-solid-content low-viscosity low-hydroxyl-value low-dilution-rate alkyd resin is used for preparing woodenware finish paint, following advantages are achieved: the woodenware finish : curing agent : diluents ratio is 3:1:1, the construction viscosity is (14+-0.5)s / 25 DEG C.coating-4, obvious low dilution rate is achieved, the using amount of the curing agent and the diluents solvent is reduced fully, energy saving and consumption reduction are achieved, after paint preparation, the VOC content is lower than 420g / L, and the duty free requirement that paint preparation construction VOC content is lower than 420g / L are satisfied.

Description

technical field [0001] The invention relates to the technical field of alkyd resins, in particular to a high-solid, low-viscosity, low-hydroxyl, low-ratio alkyd resin and its preparation method and application. Background technique [0002] The coating made of hydroxyl-containing alkyd resin has the advantages of good film adhesion, high hardness, good leveling, bright, plump, and good chemical resistance. Compared with other resins (such as nitrocellulose, epoxy resin, acrylic resin, etc. Resin, polyurethane resin, amino resin, etc.) can be formulated into a variety of coatings with different properties to play a decorative and protective role. At present, coatings made of hydroxyl-containing alkyd resins are the main types of wood coatings, accounting for about 40% to 50% of the total wood coatings. Alkyd resin has easy-to-obtain raw materials, simple process, excellent compatibility, convenient construction, superior performance, and meets the social requirements of sust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/52C08G63/78C09D175/06C09D7/65C08G18/42
CPCC08G18/4288C08G63/52C08G63/78C09D175/06C09D7/65C08L91/06
Inventor 符英苑陈江平周伟建段成刚麦炜煜王召伟曾燕龙
Owner GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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