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A kind of β-diketone organotin PVC heat stabilizer and preparation method thereof

A heat stabilizer and diketone technology, which is applied in the field of β-diketone organotin PVC heat stabilizer and its preparation, can solve the problems of inconvenient transportation and storage, achieve convenient storage, convenient use, and promote analysis. crystal effect

Inactive Publication Date: 2018-07-13
南通德发生物化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organotin heat stabilizers have the advantages of good thermal stability, compatibility and transparency, but these heat stabilizers are all liquid, which is not very convenient in transportation and storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Introduce nitrogen into the ultrasonic reaction vessel equipped with a stirring device, then add 300 mL of dichloromethane solution dissolved in 22.5 g (0.1 mol) of 1,3-diphenyl-1,3-propanedione, and then add 100 mL of ammonia water , slowly add 300 mL of methanol solution containing 22.5 g (0.1 mol) of stannous chloride dihydrate dropwise into the ultrasonic reaction vessel at a reaction temperature of 25 ° C, and turn on the stirring device and the ultrasonic generating device during the dropping process, and the ultrasonic generating device The set frequency is 20KHz. After the dropwise addition, the solution is in a clear state at this time. Stop stirring, keep the ultrasonic generating device to continue to work, slowly cool down to 0°C, and the reaction liquid is still. Open the vent hole on the ultrasonic reaction container and keep The nitrogen gas introduced is discharged from the exhaust hole, so that the nitrogen gas is discharged out of the ultrasonic reactio...

Embodiment 2

[0022] Introduce nitrogen into the ultrasonic reaction vessel equipped with a stirring device, then add 300 mL of dichloromethane solution dissolved in 22.5 g (0.1 mol) of 1,3-diphenyl-1,3-propanedione, and then add 100 mL of ammonia water , slowly add 300 mL of methanol solution containing 12 g (0.05 mol) of stannous chloride dihydrate dropwise into the ultrasonic reaction vessel at a reaction temperature of 0°C, and turn on the stirring device and the ultrasonic generating device during the dropping process. Set the frequency to 100KHz. After the dropwise addition, the solution is in a clear state at this time. Stop stirring, keep the ultrasonic generating device to continue to work, slowly cool down to 0°C, and the reaction liquid is still. Open the vent hole on the ultrasonic reaction container and keep the ventilation The incoming nitrogen gas is discharged from the exhaust hole, so that the nitrogen gas is discharged out of the ultrasonic reaction vessel along with a cert...

Embodiment 3

[0024] Introduce nitrogen into the ultrasonic reaction vessel equipped with a stirring device, then add 300 mL of dichloromethane solution dissolved in 22.5 g (0.1 mol) of 1,3-diphenyl-1,3-propanedione, and then add 100 mL of ammonia water , slowly add 300 mL of methanol solution containing 16 g (0.066 mol) of stannous chloride dihydrate dropwise into the ultrasonic reaction vessel at a reaction temperature of 50° C. During the dropping process, the stirring device and the ultrasonic generating device are turned on, and the ultrasonic generating device Set the frequency to 80KHz. After the dropwise addition, the solution is in a clear state at this time. Stop stirring, keep the ultrasonic generating device to continue to work, slowly cool down to 0°C, and the reaction liquid is still. Open the vent hole on the ultrasonic reaction container and keep the ventilation. The incoming nitrogen gas is discharged from the exhaust hole, so that the nitrogen gas is discharged out of the u...

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PUM

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Abstract

The invention discloses a beta-diketone organotin PVC heat stabilizer and a preparation method thereof, and belongs to the technical field of a PVC heat stabilizer. According to main points of the technical scheme, the beta-diketone organotin PVC heat stabilizer has a structural formula as shown in the specification, wherein R is phenyl or heptadecyl. The invention also discloses a preparation method of the beta-diketone organo tin PVC heat stabilizer. Advantages of an organotin stabilizing agent and a beta-diketone compound auxiliary heat stabilizer are combined, thus achieving the effects of the two substances. Then, the product is more convenient to use. In the preparation method of the beta-diketone organotin PVC heat stabilizer, the use of ultrasonic wave can avoid ammonium chloride which is generated after a reaction and doped in the product from affecting quality of the product; and by the use of nitrogen during the whole reaction, a solvent is not easy to volatilize under the condition of 0 DEG C. through nitrogen for solvent volatilization, crystallization can be promoted, and the influence of oxygen on the combination of a beta-diketone compound and stannous ion can be avoided.

Description

technical field [0001] The invention belongs to the technical field of PVC heat stabilizers, and in particular relates to a β-diketone organotin PVC heat stabilizer and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC for short) is one of the five general-purpose plastics. It is an ideal material for its low price and outstanding balance performance. It is also an ancient and active variety in the history of plastic applications. Its global output is second only to polyvinyl chloride Vinyl comes in second. my country is one of the largest producers of PVC resin. The domestic PVC industry has made great progress after more than 50 years of development. At present, there are more than 100 PVC production enterprises in China, and the production capacity ranks first among domestic synthetic resins. [0003] Generally, when PVC is heated to above 130°C, it begins to release HCl. This is because in the process of manufacturing PVC, due to auto-o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K13/02C08K5/132C08K3/22C08K5/12C08L27/06C07F7/22
CPCC07F7/003C08K3/22C08K5/12C08K5/132C08K13/02C08K2003/2237C08L2201/08C08L27/06
Inventor 毛龙飞马春华李伟丁清杰郝秉慧蒋涛申家轩
Owner 南通德发生物化工有限公司
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