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Preparation method and application of polyether modified phosphate polyol

A polyether polyol, polyether modification technology, applied in the direction of polyurea/polyurethane adhesive, adhesive type, adhesive, etc., can solve the problem of low coating viscosity on the machine, poor fastness, and difficult composition and other problems, to achieve good compatibility and good lamination effect

Active Publication Date: 2019-08-06
ZHEJIANG JOYA POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this addition method is not suitable for two-component polyurethane solvent-free laminating adhesives. Ether polyols are mainly used, which have poor compatibility with various polyesters. After the above phosphoric acid polyester is added, it is difficult to form a uniform and stable composition. The adhesive layer is not transparent or transparent after curing, and the fastness of the film is poor after compounding.
According to the principle of similar compatibility, the applicant has proved through a large number of experiments that the main cause of the compatibility problem is that the structure of the above-mentioned hydroxyphosphate diol does not contain ether bonds, and it is difficult to be compatible with polyether components such as polypropylene glycol and castor oil.

Method used

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  • Preparation method and application of polyether modified phosphate polyol

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 124kg of alkyl dimethyl phosphate and 700kg of polypropylene glycol with a molecular weight of 200 in a certain proportion into a reaction kettle equipped with a thermometer, a stirrer and a condensing device with a vacuum dehydration device. While stirring, add 0.2 kg of catalyst butyltin oxide, heat the system temperature to 200°C, and react for 24 hours. During the reaction, small molecular substances such as methanol continue to distill out. After the distillate reaches 85% of the theoretical value, Begin to distill off residual methanol and excess polypropylene glycol gradually under reduced pressure, and at the same time continuously take samples to measure the hydroxyl value of the system. The obtained product is polyether modified phosphate polyol P-1.

Embodiment 2

[0019] Dimethyl methyl phosphate 124kg and molecular weight are 300 polypropylene glycol 950kg to add in the reactor that thermometer, agitator and condensing device are housed with vacuum dehydration device. While stirring, add 0.2 kg of catalyst butyltin oxide, heat the system temperature to 200°C, and react for 24 hours. During the reaction, small molecular substances such as methanol continue to distill out. After the distillate reaches 85% of the theoretical value, Begin to distill off residual methanol and excess polypropylene glycol gradually under reduced pressure, and at the same time continuously take samples to measure the hydroxyl value of the system. The obtained product is polyether modified phosphate polyol P-2.

Embodiment 3

[0021] Take 50kg of polyether-modified phosphate polyol P-1, 36kg of castor oil, and 30kg of polypropylene glycol with a molecular weight of 1000, and mix them evenly to obtain the hydroxyl component A-1 of a clear and transparent two-component polyurethane solvent-free laminating adhesive

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Abstract

The invention discloses a preparation method and an application of a polyether modified phosphate polyol. Transesterification modification of dimethyl alkylphosphate is carried out by using polyetherpolyol with a low molecular weight in order to obtain the polyether modified phosphate polyol. The flame retardation effect of a two-component solventless polyurethane laminated adhesive prepared fromthe polyol is improved without losing other physical properties.

Description

technical field [0001] The invention relates to the field of polymer chemical industry, in particular to a method for synthesizing polyether-modified phosphate polyols for two-component solvent-free laminating adhesives. Background technique [0002] In recent years, with the strengthening of domestic product quality and environmental protection awareness, green packaging materials and processes have become more and more favored by the composite film packaging industry and flexible packaging end users, and have developed rapidly; among them, the solvent-free composite process has developed the most rapidly. The process uses precisely metered two-component glue mixing and coating equipment, combined with two-component solvent-free polyurethane glue for lamination production. The entire process has no organic solvent emissions, and does not require huge and complicated heating blasts and exhaust gas exhaust devices. , simple equipment, stable product performance, welcomed by c...

Claims

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Application Information

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IPC IPC(8): C08G65/335C08G18/50C09J175/08
CPCC08G65/3355C08G18/5078C09J175/08C08G2650/06
Inventor 贝文理叶青潘婷婷
Owner ZHEJIANG JOYA POLYMER TECH