Preparation method of urethane modified tung oil vinylite

A technology of vinyl resin and tung oil, which is used in inks, non-polymer organic compound adhesives, household appliances, etc., can solve the problems of reducing VOC in formulations, solvent hazards, and banning

Inactive Publication Date: 2011-10-26
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] On the other hand, most vegetable oil modification research is still limited to solvent-based systems, which are suitable for solvent-based coatings and ink formulations. The existence of a large amount of solvents will also cause potential hazards, and even be banned in some strict fields
Transforming the modified vegetable oleoresin into a water-based system can avoid the use of a large amount of organic solvents and significantly reduce the formula VOC (volatile organic compounds), but it has been proved that the baking-type water-based formula needs to consume more heat to remove moisture. The purpose of drying and curing

Method used

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  • Preparation method of urethane modified tung oil vinylite
  • Preparation method of urethane modified tung oil vinylite
  • Preparation method of urethane modified tung oil vinylite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~24

[0077] Add 100 g tung oil and the calculated amount of maleic anhydride (MAn) into a dry round bottom flask, add 0.1% p-methoxyphenol (percentage relative to the total weight of the material) under mechanical stirring, and use oil bath heating to control the temperature at 60~65°C, after the maleic anhydride in the system is completely dissolved, add a certain proportion of catalyst, and put the reaction bottle into a microwave synthesizer (WBFY201 microwave synthesizer manufactured by Gongyi Yuhua Instrument Co., Ltd., rated output power 750 W), connected to the reflux condenser, inner coil cooling water device and mechanical stirrer, set the microwave output power through the microwave instrument output power adjustment on-off switch, temporarily set the reaction time to 60 min, and the temperature is controlled at 60~140°C Selected and controlled, 5 minutes after the start of the reaction, samples were taken every 3 minutes, and reserved for NMR determination to monitor the ...

Embodiment 25

[0084] Synthesis of Isophorone Diamine-N,N'-bis(hydroxyethyl formate)

[0085] Add the measured isophorone diamine (0.1mol) and ethylene carbonate (0.2mol) into a 100mL three-necked flask equipped with a mechanical stirrer, thermometer and nitrogen protection device, stir mechanically, and control the temperature at 60°C. After the solids in the system were completely melted, 0.5% of the total mass of the system was added as yttrium acetate as a catalyst, the temperature of the system was raised to 100°C, and the reaction was carried out at a constant temperature for 4 hrs. The conversion of ethylene carbonate was completely detected by infrared spectroscopy without post-treatment, and isoflurane was obtained. Keltone-N,N'-bis(hydroxyethyl formate), the H NMR spectrum detection is consistent with the target structure. The chemical structure is shown in formula [5].

[0086]

[0087] Formula [5].

Embodiment 26

[0089] Synthesis of 1,6-hexanediamine-N,N'-bis(hydroxyethyl formate)

[0090] Add measured 1,6-hexanediamine (0.1mol) and ethylene carbonate (0.2mol) into a 100mL three-neck flask equipped with a mechanical stirrer, thermometer and nitrogen protection device, stir mechanically, and control the temperature at 60°C. After the solids in the system were completely melted, yttrium acetylacetonate accounting for 0.5% of the total mass of the system was added as a catalyst, the temperature of the system was raised to 100°C, and the reaction was carried out at a constant temperature for 3 hrs. The complete conversion of ethylene carbonate was monitored by infrared spectroscopy without post-treatment, and the obtained 1,6-Hexamethylenediamine-N,N'-bis(hydroxyethyl formate), the H NMR spectrum detection is consistent with the target structure. The chemical structure is shown in formula [6].

[0091]

[0092] Formula [6].

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Abstract

The invention discloses a preparation method of urethane modified tung oil vinylite, belonging to the field of modified tung oil vinylite preparation. The method comprises the following steps: (1) carrying out microwave heating in the presence of a catalyst so that maleic anhydride reacts with tung oil so as to obtain anhydride modified tung oil; (2) carrying out ring-opening esterification on urethane diol and anhydride modified tung oil in the presence of a tertiary amine catalyst so as to obtain urethane modified tung oil resin; and (3) when the urethane diol is abundant, directly adding monomer with an epoxy group for reacting with a carboxyl group in a resin structure so as to obtain the vinylite containing urethane modified tung oil, when anhydride is left due to lack of urethane diol after the reaction in the step (2) is completed, adding hydroxyl (methyl) acrylate monomer to react with residual anhydride group for ring-opening esterification so as to obtain the vinylite containing urethane modified tung oil. The preparation method has the advantages that process is simple, and time is saved, thus the preparation method has wide application prospects and can be used in the fields of paint, oil ink, adhesives and the like.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a method for synthesizing modified tung oil vinyl resin. Background technique [0002] Petroleum-derived monomers or resins are generally used as raw materials in the fields of coatings, inks, adhesives and composite materials today. However, with the depletion of petroleum resources, people are gradually turning to the development and utilization of renewable organic resources, including the use of easily renewable vegetable oils. Deep processing and utilization to partially replace petroleum-based raw materials. On the other hand, a large number of petroleum-based solvents, monomers, and resins are used in coatings, inks, adhesives, and composite material formulations. After curing, some small molecular compounds, including solvents, will cause serious damage to the human body and the ecological environment, especially in packaging. In the field of coating and printing, the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/89C09D4/00C09D11/00C09J4/00
Inventor 庞来兴杨建文祝方明
Owner SUN YAT SEN UNIV
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