Method for preparing 1,6-hexanediol diacrylate

A technology of hexanediol diacrylate and hexanediol, which is applied in the preparation of carboxylic acid esters, chemical instruments and methods, and the preparation of organic compounds. It can solve the problems of poor polymerization inhibition effect and difficult removal, and achieve the appearance Excellent, easy to clean, easy to separate and recover the effect

Inactive Publication Date: 2012-09-12
LEIYANG YOUWEI NEW MATERIAL
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method for preparing 1,6-hexanediol diacrylate. This preparation method has simple process, convenient operation, low cost, short reaction cycle, and overcomes the traditional polymerization inhibitors in the reaction process. Poor polymerization inhibition effect in the process, difficult to remove in the post-processing process, and affect the appearance quality of the sample.

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  • Method for preparing 1,6-hexanediol diacrylate

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Embodiment Construction

[0028] The preparation of 1,6-hexanediol diacrylate described in the present invention will be described in detail with examples below.

[0029] In this embodiment, a 250 mL three-necked flask is used as a reaction kettle in the embodiment of the present invention, and the reaction kettle is equipped with a thermometer, a stirring paddle, a water separator and a spherical condenser.

[0030] First, 47.28 g of 1,6-hexanediol, 3.12 g of hydrogen-type macroporous cation exchange resin, 5.4 g of sodium bicarbonate, acetic acid Copper 3.40 g, copper chloride 1.12 g, cyclohexane 170 mL, heated and stirred to make them fully mixed.

[0031] Heat the three-neck flask to raise the temperature to 55°C and maintain this temperature for 20 minutes. At the same time, add 70 mL of acrylic acid dropwise with a dropping funnel. After the addition of acrylic acid is completed, continue to heat up until the system is in a reflux state. At this time, the system temperature is 80 ~95°C, reflux f...

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Abstract

The invention discloses a method for preparing 1,6-hexanediol diacrylate. The method comprises the following steps of orderly adding 1,6-hexanediol, acrylic acid, one or more solvents, a catalyst and one or more polymerization inhibitors into a reaction flask, heating, carrying out backflow, washing the reaction solution by using a mixed solution comprising one or more of a sodium bicarbonate solution, a sodium chloride solution, a sodium hydroxide solution and distilled water, carrying out layering, collecting an upper organic phase, carrying out drying dehydration of the upper organic phase by one or more drying agents, filtering and carrying out a reduced-pressure solvent removal process on the upper organic phase at a temperature of 40 to 60 DEG C to obtain 1,6-hexanediol diacrylate. The method adopts raw materials having low costs and has the characteristics of simple processes, easy operation, short reaction period and easily controllable reaction. 1,6-hexanediol diacrylate obtained by the method has the chroma below 10, good transparency, good flexibility, hydrolysis resistance, heat resistance and chemical solvent resistance.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for preparing 1,6-hexanediol diacrylate, which relates to the technical field of fine chemical preparation. Background technique [0002] Ultraviolet curing (UV) technology is a new technology of energy saving and environmental protection. UV curing system is generally composed of two parts: acrylate active monomer and photoinitiator, and is widely used in coatings, adhesives, electronics and composite materials, etc. Many fields. 1,6-Hexanediol diacrylate (HDDA) is widely used in light curing due to its good flexibility, hydrolysis resistance, heat resistance, chemical solvent resistance, low volatility, low viscosity, and high reactivity Inks, coatings, adhesives, sealants, modified copolymers, injection molding products, textiles and other fields, among which, it is the most widely used as a reactive diluent for ultraviolet (UV) curing. [0003] As far as the existi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/54C07C67/08C07C67/62
Inventor 李晓刚孟锐黄英刘中禄李建云曹建红邱几友
Owner LEIYANG YOUWEI NEW MATERIAL
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