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Solvent-free isocyanate modified bio-based dispersion and preparation method thereof

An isocyanate and bio-based technology, applied in the field of coatings, can solve problems such as air pollution and contamination, and achieve the effects of low production energy consumption, unique method, and improved hardness and surface gloss fullness

Active Publication Date: 2022-03-04
HENGSHUI XINGUANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a solvent-free isocyanate-modified bio-based dispersion and its preparation method, which solves the problem of a large amount of volatile organic compounds contained in the modified resin of the related technology and serious air pollution

Method used

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  • Solvent-free isocyanate modified bio-based dispersion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A preparation method of a solvent-free isocyanate modified bio-based dispersion, comprising the following steps:

[0032] S1. Prepare materials according to the following weights:

[0033] Component A: dehydrated castor oil 300g;

[0034] Component B: 20g methacrylic acid, 20g styrene, 30g methyl methacrylate, 50g hydroxyethyl methacrylate, 6g azobisisobutyronitrile;

[0035] Component C: Solvay ABEXAP470-Z 6g, Solvay Rhodafac RS-610 6g, ammonia water 20.1g, deionized water 500g; wherein, the mass concentration of ammonia water is 28%;

[0036] Component D: 0.2g of bismuth octadecanoate, 0.1g of TEGO810, 0.1g of Solvay 691 defoamer, 39.3g of 4,4'-dicyclohexylmethane diisocyanate, 0.2g of Pusha JH-102K;

[0037] S2. In a four-neck flask equipped with a thermometer, a stirrer, a heating mantle, and nitrogen protection, add component A, and heat up at 90°C for 1 hour;

[0038] S3. Mix component B fully under magnetic stirring to completely dissolve azobisisobutyronitril...

Embodiment 2

[0042] A preparation method of a solvent-free isocyanate modified bio-based dispersion, comprising the following steps:

[0043] S1. Prepare materials according to the following weights:

[0044] Component A: dehydrated castor oil 280g;

[0045] Component B: 20g methacrylic acid, 40g styrene, 35g methyl methacrylate, 50g hydroxyethyl methacrylate, 6.7g azobisisobutyronitrile;

[0046] Component C: Solvay ABEXAP470-Z 6g, Solvay Rhodafac RS-610 6g, N-methylmorpholine 18.8g, deionized water 500g;

[0047] Component D: 0.2g bismuth octadecanoate, 0.1g TEGO810, 0.1g Solvay 691 defoamer, 38g phorone diisocyanate, 0.2g Pusha JH-102K;

[0048] S2. In a four-neck flask equipped with a thermometer, a stirrer, a heating mantle, and nitrogen protection, add component A, and heat up at 90°C for 1 hour;

[0049] S3. Mix component B fully under magnetic stirring to completely dissolve azobisisobutyronitrile, and put it into the constant flow pump pipeline; Put it into a four-necked bottl...

Embodiment 3

[0054] A preparation method of a solvent-free isocyanate modified bio-based dispersion, comprising the following steps:

[0055] S1. Prepare materials according to the following weights:

[0056] Component A: palm oil 290g;

[0057] Component B: methacrylic acid 15g, styrene 20g, methyl methacrylate 35g, hydroxyethyl methacrylate 60g, azobisisobutyronitrile 7g;

[0058] Component C: Solvay ABEXAP470-Z 7.5g, Solvay Rhodafac RS-610 7.5g, N-methylmorpholine 23g, deionized water 600g;

[0059] Component D: 0.3g of bismuth octadecanoate, 0.25g of TEGO810, 0.25g of Solvay 691 defoamer, 40g of toluene diisocyanate, 0.5g of Pusha JH-102K;

[0060] S2. In a four-neck flask equipped with a thermometer, a stirrer, a heating mantle, and nitrogen protection, add component A, and heat up at 90°C for 1 hour;

[0061] S3. Mix component B fully under magnetic stirring to completely dissolve azobisisobutyronitrile, and put it into the constant flow pump pipeline; Put it into a four-necked b...

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Abstract

The invention relates to the technical field of coatings, and provides a solvent-free isocyanate modified bio-based dispersion which comprises a component A, a component B, a component C and a component D. The component A comprises, by weight, 280-300 parts of bio-based grease; the component B is prepared from 15 to 25 parts of methacrylic acid, 20 to 40 parts of styrene, 30 to 35 parts of methyl methacrylate, 40 to 60 parts of hydroxyethyl methylacrylate and 5 to 7 parts of azodiisobutyronitrile; the component C comprises 10 to 15 parts of an emulsifier, 18 to 23 parts of a pH regulator and 400 to 600 parts of deionized water; the component D is prepared from 0.1 to 0.3 part of bismuth caprylate and caprate, 0.1 to 0.5 part of a de-foaming agent, 35 to 40 parts of isocyanate and 0.1 to 0.5 part of a sterilizing agent. According to the technical scheme, the problem that the modified resin in the prior art contains a large amount of volatile organic compounds and seriously pollutes the atmosphere is solved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a solvent-free isocyanate-modified bio-based dispersion and a preparation method thereof. Background technique [0002] Paint is coated on the surface of the object to be protected or decorated, and can form a continuous film firmly attached to the object to be coated, usually based on resin, or oil, or emulsion, with or without adding pigments, fillers, and adding corresponding Additives, viscous liquids prepared with organic solvents or water. Commonly used resins in coatings are polyurethane resin, acrylic resin, alkyd resin, polyester resin, etc. [0003] These resins have their own advantages and disadvantages when applied in coatings. Polyurethane resin coating film has high hardness, strong adhesion, excellent weather resistance, wear resistance and chemical corrosion resistance, but the drying temperature of coating film is high; , good weather resistance, but the full...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/00C09D5/14C09D5/08C09D7/20
CPCC09D151/00C09D5/14C09D5/08C09D7/20
Inventor 郭晓猛田海长郑齐王亚轩李耀松
Owner HENGSHUI XINGUANG CHEM