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A kind of light stabilizer and its preparation method and application

A light stabilizer and solvent technology, applied in the field of light stabilizer and its preparation, to achieve long-term light stability and physical and mechanical performance stability, excellent physical and mechanical performance, and the effect of weakening the catalytic effect

Active Publication Date: 2021-11-16
宿迁联盛科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when adding inorganic fillers and surface modification, people often only pay attention to the improvement of these factors on the performance of polymers (such as strength, toughness or cost reduction, etc.), but ignore their stability to resin photo-oxidative aging. The influence of the surface properties of the inorganic filler and its surface treatment have been shown to have a significant impact on the aging performance of the polymer.

Method used

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  • A kind of light stabilizer and its preparation method and application
  • A kind of light stabilizer and its preparation method and application
  • A kind of light stabilizer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of Light Stabilizer A1:

[0040] In a four-necked flask equipped with a thermometer, add II, 105g of 1,1,6,6-tetramethylpiperidinamine, 53g of 3-(2,3-epoxypropoxy)propyltrimethoxysilane, Dissolve it in 350g of toluene solvent, install a condenser, start the stirrer, and raise the temperature to 65°C for 4 hours in a water bath. After the ring-opening addition reaction, the organic solvent and unreacted small molecule intermediates were distilled off under reduced pressure to obtain the target product with a yield of 94%. According to infrared characterization, the obtained product is at 910cm -1 The characteristic peak of the epoxy group at around 3300cm disappears, while at 3300cm -1 There are obvious alcoholic hydroxyl peaks at the left and right.

Embodiment 2

[0042] Preparation of Light Stabilizer A2:

[0043] In a four-necked flask equipped with a thermometer, add II, 150g of 1,1,6,6-tetramethylpiperidinamine, 120g of 3-(2,3-epoxypropoxy)propyltriethoxysilane , dissolved in 350g of ethanol solvent, fitted with a condenser, started the agitator, and heated to 25°C for 6 hours in a water bath. After the ring-opening addition reaction, the organic solvent and unreacted small molecule intermediates were distilled off under reduced pressure to obtain the target product with a yield of 96%.

Embodiment 3

[0045] The preparation of light stabilizer A3:

[0046] In a four-necked flask equipped with a thermometer, add 150g of II, 1,1,6,6-tetramethylpiperidinamine, 3-(2,3-epoxypropoxy)propyldimethoxymethyl 150g of silane was dissolved in 600g of petroleum ether solvent, a condenser was installed, the stirrer was started, and the temperature was raised to 90°C for 9 hours in a water bath. After the ring-opening addition reaction, the organic solvent and unreacted small molecule intermediates were distilled off under reduced pressure to obtain the target product with a yield of 93%.

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Abstract

The invention discloses a light stabilizer, which has the structure shown in the following formula I: wherein, R 1 , R 2 , R 3 Each is independently selected from one or both of alkyl and alkoxy, and n is an integer of 2-4. The light stabilizer has an improved light stabilization effect, and at the same time, it has a good dispersing effect on the inorganic filler used together with it, and endows the plastic products using the light stabilizer with better physical and mechanical properties. The invention also discloses the preparation method and application of the light stabilizer.

Description

technical field [0001] The invention relates to the technical field of polymer additives. More specifically, it relates to a light stabilizer and its preparation method and application. Background technique [0002] Since the appearance of hindered amine light stabilizers (HALS) in the 1970s, they have attracted much attention due to their high-efficiency light-stabilizing protective effects on resins. After decades of development, a variety of products with remarkable effects have been successfully developed and widely used in the field of plastic products. Its general structure is shown in the following formula. HALS is a piperidine derivative with a steric hindrance effect, and its Y group can be a hydrogen group (H), an alkyl group (CH 3 ), alkoxy (OR), etc., and the side chain X can also provide a variety of functional group structure design. Therefore, according to the different environmental requirements of plastic products, hindered amine light stabilizers with sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/544C08J5/18C08L23/06C08K3/36C08K3/26D01F6/46D01F1/10C07F7/18
CPCC07F7/1892C08J5/18C08J2323/06C08K3/36C08K2003/265C08K5/5477D01F1/106D01F6/46
Inventor 陆涛刘旭谢胜利蔡广超戈晴晴张跃
Owner 宿迁联盛科技股份有限公司
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