Quick-drying hydroxylated acrylic resin water dispersion and preparation method and use thereof

A technology of quick-drying hydroxyacrylic acid and hydroxyacrylic acid, which is applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as environmental pollution, energy consumption, and obstacles to sustainable social development, and achieve improved construction adaptability, good fullness, Reduce the effect of pinholes

CN102161770AActive Publication Date: 2011-08-24广东绚缤材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-08-24

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Abstract

The invention relates to quick-drying hydroxylated acrylic resin water dispersion and a preparation method and use thereof, in particular to quick-drying aqueous automobile repair solid color paint prepared from the hydroxylated acrylic resin dispersion. The invention discloses a method for preparing the hydroxylated acrylic resin dispersion, which comprises: A, preparing a prepolymer of hydroxylated acrylic resin; and B, preparing aqueous prepolymer of the hydroxylated acrylic resin. And the invention also discloses a method for preparing quick-drying aqueous automobile repair solid color paint by using the dispersion. The coating of the quick-drying aqueous automobile repair solid color paint is accomplished at a low temperature or even at normal temperature, so the volatile organic compound (VOC) emission in a coating process of an automobile is reduced and energy conservation and emission reduction are realized. Thus, the quick-drying aqueous automobile repair solid color paint can be promoted and used easily.
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Description

technical field

[0001] The invention relates to an automobile seasoning material, in particular to a fast-drying water-based automobile solid color paint prepared from a hydroxyacrylic resin dispersion. Background technique

[0002] In recent years, with the continuous increase of car ownership and vehicle service life, automotive coatings have become the fastest-growing coating variety in my country's coating industry, and my country has become an emerging market for automotive coatings. However, the problems of environmental pollution and energy consumption caused by the development of automotive coatings are becoming more and more serious, and even become an obstacle to the sustainable development of society. With the strengthening of people's awareness of environmental protection and the improvement of environmental protection laws and regulations in various countries, the emission of volatile organic compounds (VOC) is restricted more and more strictly, and the water-ba...

Examples

Embodiment 1

[0085] Example 1 - Product Example

[0086] Add 25-40 parts by weight of co-solvents (such as propylene glycol ethers or propylene glycol ether esters, including propylene glycol methyl ether (PM), dipropylene glycol methyl ether (DPM), Propylene glycol methyl ether propionate (PMP) or propylene glycol methyl ether acetate (PMA)), feed nitrogen and heat up to reflux temperature; drop 15~25 parts by weight of non-functional (meth)acrylate at this temperature ( Such as methyl methacrylate or ethyl methacrylate), 10-20 parts by weight of (meth)acrylates containing hydroxyl groups (such as hydroxyethyl methacrylate or hydroxypropyl acrylate), 5-10 parts by weight of (meth)acrylic acid (such as acrylic acid or methacrylic acid), 1-15 parts by weight of vinyl monomers (such as styrene or acrylonitrile), 0.25-0.75 parts by weight of initiator (optional azobisisobutyl Nitrile or dibenzoyl peroxide) and 0.1-1 parts by weight of chain regulators (such as dodecyl mercaptan or mercaptoet...

Embodiment 2

[0088] In a reactor equipped with a stirring paddle, a thermometer, and a condenser, add 25 parts by weight of dipropylene glycol methyl ether (DPM) of propylene glycol ethers as a cosolvent, and feed nitrogen to raise the temperature to reflux temperature; drop 25 parts by weight of Ethyl methacrylate of non-functional (meth)acrylate, 20 parts by weight of hydroxyethyl methacrylate of hydroxyl-containing (meth)acrylate, 10 parts by weight of acrylic acid of (meth)acrylic acid, 15 parts by weight of vinyl monomer styrene, 0.75 parts by weight of initiator azobisisobutyronitrile and 1 weight part of chain regulator dodecyl mercaptan mixed solution, drop within 2h After the addition is completed, keep the temperature for 0.5h, then add 0.75 parts by weight of the above-mentioned initiator, and keep the temperature for 1.5h to obtain the acrylic resin prepolymer; the hydroxyacrylic resin obtained above is vacuum distilled to remove part of the solvent, so that the amount of solven...

Embodiment 3

[0090] In a reactor equipped with a stirring paddle, a thermometer, and a condenser, add 40 parts by weight of propylene glycol methyl ether propionate (PMP) of propylene glycol ether esters as a co-solvent, pass through nitrogen to raise the temperature to the reflux temperature, and add dropwise at this temperature 15 parts by weight of ethyl methacrylate of non-functional (meth)acrylate, 10 parts by weight of hydroxypropyl acrylate of hydroxyl-containing (meth)acrylate, 5 parts by weight of methacrylic acid (meth) acrylic acid, 1 weight part of vinyl monomer acrylonitrile, 0.25 weight part of initiator dibenzoyl peroxide and 0.1 weight part of chain regulator mercaptoethanol, drop it within 3h Add complete, keep warm 1h, add the above-mentioned initiator of 0.25 parts by weight afterwards, keep warm 2.5h, can obtain acrylic resin prepolymer; With the above-mentioned hydroxy acrylic resin vacuum distillation that obtains, remove part solvent, make the consumption of solvent i...