Organic material stabilizer and modified polymer containing tetramethylpiperidinyl

A technology of tetramethylpiperidinyl and organic materials, which is applied in the direction of organic chemistry, can solve the problems such as the effect is not obvious, and achieve the effect of improving the effect of yellowing resistance

Inactive Publication Date: 2017-09-29
FDC LEES CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when these hindered phenolic antioxidants are used in combination with hindered amine stabilizers, although they can improve the antioxidant capacity of organic polymer materials during high-temperature processing or heat baking, they are not effective for improving their room temperature yellowing resistance (anti-NO x ) and alkali resistance, the effect is not very obvious

Method used

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  • Organic material stabilizer and modified polymer containing tetramethylpiperidinyl
  • Organic material stabilizer and modified polymer containing tetramethylpiperidinyl
  • Organic material stabilizer and modified polymer containing tetramethylpiperidinyl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Bifunctional compound A

[0082] Add 250mL of ethanol, 60g of 80% hydrazine hydrate and 146g of methyl β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate into a 500mL four-neck mechanically stirred bottle, heat up to reflux for 6 hours, and detect with TLC When there was no methyl β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 150 mL of water was added to lower the temperature, and the product was crystallized and completely precipitated. After filtration and drying, 141 g of white solid powder was obtained.

[0083] Deoxygenate another 500mL four-neck mechanical stirring bottle with nitrogen, add 250mL toluene and 50g (0.2mol) 4,4'-methylenebis(phenylisocyanate) (MDI), and put it at 10-15℃ Slowly add 58.4g (0.2mol) of the above white solid powder first, there will be exothermic phenomenon during the addition process, so that the temperature will naturally rise to 40-45°C, and then add 31.4g (0.2mol) 2,2, 6,6-Tetramethyl-4-piperidinol (2,2,6,6-tetramethyl-4-piperidinol...

Embodiment 2

[0085] Bifunctional compound B

[0086] The synthetic method of embodiment 2 is the same as embodiment 1, and difference is that 33.6g1,6-hexamethylene diisocyanate (HDI) replaces MDI, obtains 112g white solid [being the difunctional compound shown in following formula (B) B], the yield is 90.8%.

[0087]

Embodiment 3

[0088] Bifunctional compound C

[0089] The synthesis method of embodiment 3 is the same as that of embodiment 1, except that 146g beta-(3,5-di- Methyl tert-butyl-4-hydroxyphenyl)propionate, after reacting with hydrazine hydrate in ethanol, gave 101 g of an intermediate product. Get 50g (0.2mol) of above-mentioned intermediate product and MDI and 34.2g (0.2mol) 1,2,2,6,6- pentamethylpiperidinol is reacted sequentially (step and condition are identical with embodiment 1), obtain 123g of white solid [namely the bifunctional compound C shown in the following formula (C)], the yield was 93.6%.

[0090]

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PUM

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Abstract

The invention provides a tetramethyl piperidyl-contained organic material stabilizer comprising the bifunctional compounds shown in the formula (IV): in formula (IV), R1 stands for hydrogen or C1 to C8 alkyl; R2 stands for hydrogen or C1 to C8 linear or branched alkyl; R3 stands for C1 to C18 alkylene, cyclohexylidene, arylidene, alkylidene or alkanes aryl; X stands for -NH-NH- or Y1 and Y2 stands for -O- or -NH- identically or differently; R stands for C1 to C6 alkylene; and n is 0 to 2. The present invention provides a modified polymer at the same time including organic polymer base material, and the organic material stabilizer. The organic material stabilizer can significantly improve anti-xanthochromia effect for organic polymer materials under different environment.

Description

technical field [0001] The invention relates to an organic material stabilizer, in particular to an organic material stabilizer comprising hindered phenol containing a methylpiperidyl structure in the same compound structure. Background technique [0002] General organic polymer materials (such as plastics, resins, cosmetics, pigments, paints, textiles) are susceptible to light, heat, acid, alkali or nitrogen oxides (NO x ), resulting in discoloration or material decomposition. If suitable organic additives (such as antioxidants or light stabilizers) can be added to organic polymer materials, the above materials can be protected to reduce damage. For example, if chemical substances with anti-oxidation ability or ultraviolet light absorption properties are added, the energy of ultraviolet light can be absorbed or converted, thereby maintaining the luster of the material and improving the durability of the material. [0003] At present, the above methods of adding additives ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08K5/3435C07D211/46
CPCC08G18/0876C08G18/7881C08G18/833C08K5/13C08K5/3432C08K5/3435C08L75/04
Inventor 李昆昌苏清镒许乃木
Owner FDC LEES CHEM IND
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