Alcohol soluble polyacrylate resin and preparation method and application thereof

Abstract

The invention discloses an alcohol soluble polyacrylate resin and a preparation method and an application thereof; the preparation method comprises the following steps: taking 260-800 parts of alcohols solvent, adding the solvent in a reaction kettle with a mixer, a reflux condenser, a heating jacket and a nitrogen covering layer, then heating the system to 70-150 DEG C, mixing the mixture for 10-30min; adding acrylic ester used as hard monomers, acrylic ester used as soft monomers, polar functional group monomers, organosilane monomers and initiator to react for 4-7h and obtain alcohol soluble polyacrylate resin. The alcohol soluble polyacrylate resin prepared by the method of the invention has no excitant odour, the number-average molar mass is 10,000-200,000, the molecular weight distribution is 1.1-4 and the Brookfield viscosity of the resin system is 100-5000cp. The coating which is prepared by mixing the resin with other pigments, fillers and assistants can be applied in glass, aluminium coil and polypropylene plastic for surface decoration and protective function.

Description

technical field

[0001] The invention relates to an alcohol-soluble polyacrylate resin and its preparation method and application. The resin can be used as the main component resin of an environment-friendly paint or an environment-friendly ink. Background technique

[0002] The emission of volatile organic compounds (VOC) from traditional solvent-based coatings has a great destructive effect on the ecological environment of the earth, and at the same time, human health is also greatly threatened. Therefore, the development of green and environmentally friendly coatings has become an important direction for the development of the coatings industry today. At present, there are new environment-friendly coating products such as water-based coatings, powder coatings, UV-curable coatings, and high-solid coatings on the market. Water-soluble coatings use water-soluble resins as film-forming materials, represented by polyvinyl alcohol and its various modified products, in addition ...

Examples

Embodiment 1

[0044] In the first step, take 45 grams of ethanol and add it to a reaction kettle equipped with a stirrer, a reflux condensing device, a heating mantle and a nitrogen blanket, and then raise the temperature of the system to 120° C., and stir at 500 rpm for 30 minutes.

[0045] In the second step, 19.5 grams of methyl methacrylate, 12 grams of n-propyl acrylate, 7.5 grams of hydroxypropyl methacrylate and 0.3 grams of benzoyl peroxide were mixed together, and then added dropwise to the reaction kettle, and the reaction time was 1 hour. The drip is over. After reacting for 4 hours, 1.5 g of γ-(methacryloyloxy)propyltrimethoxysilane was added dropwise, and then reacted for 1.5 hours, and the material was discharged.

[0046] The prepared alcohol-soluble polyacrylate resin is environmentally friendly, has no irritating odor, and is stable in storage. After testing, the number average molecular weight of the alcohol-soluble polyacrylate resin is 52000, the molecular weight distri...

Embodiment 2

[0048] The first step is to take 300 grams of isobutanol and add it to a reaction kettle equipped with a stirrer, a reflux condenser, a heating mantle and a nitrogen blanket, and then the system is heated to 85° C. and stirred at 500 rpm for 25 minutes.

[0049] In the second step, 66 grams of styrene, 58 grams of ethyl acrylate, 24 grams of acrylic acid and 1.2 grams of azobisisobutyronitrile were mixed together, and then added dropwise into the reaction kettle, and the dropwise was completed within 1.5 hours. After reacting for 4 hours, 18 g of vinyl tris(β-methoxyethoxy)silane was added dropwise. React for another 2 hours and discharge.

[0050] The prepared alcohol-soluble polyacrylate resin is environmentally friendly, has no irritating odor, and is stable in storage. After testing, the number average molecular weight of the resin is 83100, the molecular weight distribution is 2.5, and the Brookfield viscosity of the resin system is 2200cp.

Embodiment 3

[0052] The first step is to take 240 grams of isopropanol and add it to a reaction kettle equipped with a stirrer, reflux condensing device, heating mantle and nitrogen blanket, then the system is heated to 90° C., and stirred at 500 rpm for 30 minutes.

[0053] In the second step, 60 grams of ethyl methacrylate, 32 grams of n-propyl methacrylate, 23 grams of hydroxyacrylic acid and 0.8 grams of di-tert-amyl peroxide are mixed together, and then added dropwise to the reactor, within 2 hours Drip finished. After reacting for 4 hours, 10.4 g of vinyltriethoxysilane was added dropwise. Reaction was performed for another 1.5 hours, and the material was discharged.

[0054] The prepared alcohol-soluble polyacrylate resin is environmentally friendly, has no irritating odor, and is stable in storage. After testing, the number average molecular weight of the resin is 42500, the molecular weight distribution is 4.1, and the Brookfield viscosity of the resin system is 2500cp.

technical field

[0001] The invention relates to an alcohol-soluble polyacrylate resin and its preparation method and application. The resin can be used as the main component resin of an environment-friendly paint or an environment-friendly ink. Background technique

[0002] The emission of volatile organic compounds (VOC) from traditional solvent-based coatings has a great destructive effect on the ecological environment of the earth, and at the same time, human health is also greatly threatened. Therefore, the development of green and environmentally friendly coatings has become an important direction for the development of the coatings industry today. At present, there are new environment-friendly coating products such as water-based coatings, powder coatings, UV-curable coatings, and high-solid coatings on the market. Water-soluble coatings use water-soluble resins as film-forming materials, represented by polyvinyl alcohol and its various modified products, in addition ...

Examples

Embodiment 1

[0044] In the first step, take 45 grams of ethanol and add it to a reaction kettle equipped with a stirrer, a reflux condensing device, a heating mantle and a nitrogen blanket, and then raise the temperature of the system to 120° C., and stir at 500 rpm for 30 minutes.

[0045] In the second step, 19.5 grams of methyl methacrylate, 12 grams of n-propyl acrylate, 7.5 grams of hydroxypropyl methacrylate and 0.3 grams of benzoyl peroxide were mixed together, and then added dropwise to the reaction kettle, and the reaction time was 1 hour. The drip is over. After reacting for 4 hours, 1.5 g of γ-(methacryloyloxy)propyltrimethoxysilane was added dropwise, and then reacted for 1.5 hours, and the material was discharged.

[0046] The prepared alcohol-soluble polyacrylate resin is environmentally friendly, has no irritating odor, and is stable in storage. After testing, the number average molecular weight of the alcohol-soluble polyacrylate resin is 52000, the molecular weight distri...

Embodiment 2

[0048] The first step is to take 300 grams of isobutanol and add it to a reaction kettle equipped with a stirrer, a reflux condenser, a heating mantle and a nitrogen blanket, and then the system is heated to 85° C. and stirred at 500 rpm for 25 minutes.

[0049] In the second step, 66 grams of styrene, 58 grams of ethyl acrylate, 24 grams of acrylic acid and 1.2 grams of azobisisobutyronitrile were mixed together, and then added dropwise into the reaction kettle, and the dropwise was completed within 1.5 hours. After reacting for 4 hours, 18 g of vinyl tris(β-methoxyethoxy)silane was added dropwise. React for another 2 hours and discharge.

[0050] The prepared alcohol-soluble polyacrylate resin is environmentally friendly, has no irritating odor, and is stable in storage. After testing, the number average molecular weight of the resin is 83100, the molecular weight distribution is 2.5, and the Brookfield viscosity of the resin system is 2200cp.

Embodiment 3

[0052] The first step is to take 240 grams of isopropanol and add it to a reaction kettle equipped with a stirrer, reflux condensing device, heating mantle and nitrogen blanket, then the system is heated to 90° C., and stirred at 500 rpm for 30 minutes.

[0053] In the second step, 60 grams of ethyl methacrylate, 32 grams of n-propyl methacrylate, 23 grams of hydroxyacrylic acid and 0.8 grams of di-tert-amyl peroxide are mixed together, and then added dropwise to the reactor, within 2 hours Drip finished. After reacting for 4 hours, 10.4 g of vinyltriethoxysilane was added dropwise. Reaction was performed for another 1.5 hours, and the material was discharged.

[0054] The prepared alcohol-soluble polyacrylate resin is environmentally friendly, has no irritating odor, and is stable in storage. After testing, the number average molecular weight of the resin is 42500, the molecular weight distribution is 4.1, and the Brookfield viscosity of the resin system is 2500cp.