Poly-heterocyclic ring based acrylate monomer modified waterborne hydroxy acrylic dispersion and preparation method thereof

A technology of heterocyclic acrylic acid ester and hydroxyacrylic acid is applied in the field of water-based hydroxyacrylic acid dispersion and its preparation, which can solve the problems of increasing production cost, hidden dangers of safety, increasing production cycle and high reaction temperature, and achieves increasing paint film adhesion, Increased film hardness and high solids content

Active Publication Date: 2019-07-26
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the reaction temperature of this method is 140-200 ℃, and the reaction temperature is high, increases production cost and potential safety hazard; Simultaneously drips monomer and initiator three times, and total reaction time reaches 8.5-9 hours, and reaction time is too long, increases the yield of product. Production cycle

Method used

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  • Poly-heterocyclic ring based acrylate monomer modified waterborne hydroxy acrylic dispersion and preparation method thereof
  • Poly-heterocyclic ring based acrylate monomer modified waterborne hydroxy acrylic dispersion and preparation method thereof
  • Poly-heterocyclic ring based acrylate monomer modified waterborne hydroxy acrylic dispersion and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation method of the aqueous hydroxyacrylic acid dispersion modified by polyheterocyclic acrylate monomer comprises the steps:

[0042] 1) Solution polymerization: In parts by mass, 20 parts of acetone solvent and 5 parts of isobornyl acrylate were mixed into a four-necked flask, and the temperature was raised to 70°C; 30 parts of methyl methacrylate, 20 parts of acrylate Butyl ester, 23 parts of hydroxypropyl acrylate, 1 part of glycidyl methacrylate, 2 parts of acrylic acid, 1 part of dodecanethiol and 2 parts of azobisisobutyronitrile are mixed to obtain mixed monomers; take out 5wt% of mixed monomers The monomer was quickly added to the four-necked flask, and kept at 70°C for 15 minutes; after the insulation was completed, the remaining 95% of the mixed monomer and 1 part of SR-10 were fed into the four-necked flask within 4 hours. In the flask, keep warm for 1 hour after the dropwise addition is completed. Lower the temperature to below 50°C, and add 3 pa...

Embodiment 2

[0046] The preparation method of the aqueous hydroxyacrylic acid dispersion modified by polyheterocyclic acrylate monomer comprises the steps:

[0047] 1) Solution polymerization: in parts by mass, 20 parts of acetone, 10 parts of methyl ethyl ketone and 6 parts of isobornyl methacrylate were mixed into a four-necked flask, and the temperature was raised to 72°C; Methyl acrylate, 25 parts of n-butyl acrylate, 25 parts of hydroxyethyl acrylate, 2 parts of glycidyl methacrylate, 3 parts of methacrylic acid, 2 parts of mercaptoethanol and 2.5 parts of azobisisoheptanonitrile were mixed to obtain Mixed monomers; take out 6wt% of mixed monomers and quickly add them to the four-necked flask, and incubate at 72°C for 20 minutes; Feed together and join in the described four-neck flask, keep warm for 1 hour after the dropwise addition is completed. Lower the temperature to below 50°C, and add 4 parts of N,N-dimethylethanolamine dropwise within 30 minutes.

[0048] 2) Acetone treatmen...

Embodiment 3

[0051] The preparation method of the aqueous hydroxyacrylic acid dispersion modified by polyheterocyclic acrylate monomer comprises the steps:

[0052] 1) Solution polymerization: in parts by mass, 30 parts of acetone, 20 parts of propylene glycol butyl ether and 7 parts of polyheterocyclic acrylate monomer SW914 were mixed into a four-necked flask, and the temperature was raised to 74°C; 30 parts Ethyl acrylate, 30 parts of n-butyl acrylate, 26 parts of hydroxyethyl methacrylate, 3 parts of glycidyl methacrylate, 4 parts of acrylic acid, 3 parts of mercaptopropionic acid and 3 parts of benzoyl peroxide are mixed to obtain a mixture monomer; take out 7wt% of the mixed monomer and quickly add it to the four-necked flask, and keep it warm at 74°C for 25 minutes; The feed was added to the four-neck flask, and the temperature was kept for 1 hour after the dropwise addition was completed. Lower the temperature to below 50°C, and add 5 parts of triethanolamine dropwise within 30 mi...

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Abstract

The invention discloses a poly-heterocyclic ring based acrylate monomer modified waterborne hydroxy acrylic dispersion and a preparation method thereof. The dispersion comprises, by weight, 20-50 parts of solvents, 5-10 parts of poly-heterocyclic ring based acrylate monomers, 50-70 parts of acrylic alkyl ester, 25-30 parts of acrylic functional monomers, 1-3 parts of chain transfer agents, 2-4 parts of initiators, 1-3 parts of anion exchange reactive emulsifiers, 2-4 parts of initiators, 100-120 parts of deionized water, 0.1-0.5 part of defoaming agents, 0.2-0.6 part of leveling agents and 0.3-0.8 part of wetting agents. The glossiness of a film is higher than 97 degrees, the hardness of the film reaches up to 2H, the film is strong in impact resistance, excellent in flexibility and adhesive force, and the dispersion has prominent chemical corrosion resistance such as acid resistance, alkali resistance and water resistance, meets natural zero-VOC (volatile organic compounds) paint standards, is environmentally friendly, non-toxic and free from pollution and can be used for waterborne wood paint, waterborne industrial paint and waterborne floor paint.

Description

technical field [0001] The invention relates to a water-based paint, in particular to a water-based hydroxyacrylic acid dispersion modified by a polyheterocyclic acrylate monomer and a preparation method thereof. Background technique [0002] With the increasingly stringent control of VOC emissions in coatings, the use of solvent-based coatings has been restricted unprecedentedly. People have attached great importance to VOC-free or low-VOC environmentally friendly coatings, and high-performance, aldehyde-free and cross-linked water-based coatings have been developed rapidly. Water-based coatings have the advantages of non-flammability, less environmental pollution, and low harm. With the establishment of environmental protection regulations and the enhancement of people's awareness of environmental protection, water-based coatings have received extensive attention and are an inevitable trend in the development of the coatings industry. [0003] The hydroxyl component of wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C08G18/62C08G18/63C08F220/14C08F220/18C08F220/28C08F220/32C08F220/06C08F216/14C08F2/06C08J3/07C08L33/12C08F283/06C08L51/08C08L33/08
CPCC08F2/06C08F216/1466C08F216/1491C08F220/14C08F220/18C08F220/1804C08F220/1811C08F283/065C08G18/6237C08G18/635C08J3/07C08J2333/08C08J2333/12C08J2351/08C09D175/04C08F220/281C08F220/325C08F220/06
Inventor 张心亚张雄赖映标李赉周
Owner SOUTH CHINA UNIV OF TECH
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