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L1,1-dimethylhydarzine stabilizerand the stabilizer composition thereof

A technology of dimethyl hydrazine and stabilizer, applied in the field of dimethyl hydrazine-type stabilizer, can solve the problems such as the inability to improve the light resistance of organic polymer materials

Inactive Publication Date: 2013-12-04
FDC LEES CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although adding the above-mentioned compounds to organic polymer materials such as polyurethane (Polyurethane) can enhance its heat resistance and anti-aging effects, it still cannot improve the light resistance of organic polymer materials

Method used

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  • L1,1-dimethylhydarzine stabilizerand the stabilizer composition thereof
  • L1,1-dimethylhydarzine stabilizerand the stabilizer composition thereof
  • L1,1-dimethylhydarzine stabilizerand the stabilizer composition thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Embodiment one: synthetic compound A

[0096] In a 500 ml four-necked mechanical stirring bottle, 250 ml of toluene and 40 g (0.238 mol) of 1,6-hexyl diisocyanate were added after replacing with nitrogen, and 14.3 g (0.2383 mol) of 1,1- 37.3 grams (0.238 moles) of dimethylhydrazine will be exothermic during the dripping process, and the temperature will naturally rise to 50-55 ° C. After one hour of reaction, add 37.3 grams of tetramethylpiperidinol and maintain the temperature at 55-60 ° C. After two hours of reaction, the temperature was raised to 112° C. to evaporate the toluene and the residual toluene was evaporated by a water-circulating vacuum motor to obtain 89 grams of white solid. Compound structures and results are shown in Table (1).

Embodiment 2

[0097] Embodiment two: synthetic compound B

[0098] In a 500 ml four-necked mechanical stirring bottle, add 250 ml of toluene and 50 g (0.2 moles) of 4,4-methylene bis(phenylisocyanate) after replacing with nitrogen, and slowly add 31.2 gram (0.2 mol) of tetramethylpiperidine ammonia, there will be exothermic phenomena during the dripping process, and the temperature will naturally rise to 40-45°C, and 12.6 gram (0.21 mol) of 1,1-dimethylhydrazine will be added after reacting for one hour During the dropping process, solids will be produced. Maintain the temperature at 55-60°C for three hours, then raise the temperature to 90°C, react for two hours and then cool down to 10°C to filter out the crystals and obtain 85 grams of light yellow solid. Compound structures and results are shown in Table (1).

Embodiment 3

[0099] Embodiment three: synthetic compound C

[0100] In a 500 ml four-necked mechanical stirring bottle, add 250 ml of toluene and 47 g (0.188 moles) of 4,4-methylene bis(phenylisocyanate) after replacing with nitrogen, and slowly add 32.1 g of (0.188 moles) pentamethylpiperidinol and 0.1 gram of stannous octoate (T9), there will be exothermic phenomena during the addition process, and the temperature will naturally rise to 40-45 ° C. After two hours of reaction, add 11.5 grams (0.191 moles) 1 , 1-Dimethylhydrazine, maintain the temperature at 55-60°C for three hours, then raise the temperature to 90°C, after two hours of reaction, heat up to 112°C to evaporate toluene and use a circulating water vacuum motor to evaporate the residual toluene to obtain 86 grams white solid. Compound structures and results are shown in Table (1).

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Abstract

The present invention provides a dimethylhydrazine stabilizer. The dimethylhydrazine stabilizer assembled with the additive like the hindered phenol - base antioxidant, the phosphate - base antioxidant, the phosphite - base antioxidant, the benzotriazole light stabilizer, the hindered amine - base light stabilizer, the fluorescent brightener is the stabilizer composition is formed. And added to the organic material as the antioxidant, and the light stabilizer or the heat stabilizer. The organic material is prevented from the chemical property change which consequently is induced with heat or light.

Description

technical field [0001] The invention relates to a dimethylhydrazine type stabilizer, in particular to a dimethylhydrazine type stabilizer with 1,1-dimethylhydrazine as the structural type and a stabilizer comprising the dimethylhydrazine type stabilizer combination. Background technique [0002] It is well known that organic polymer materials are susceptible to light, heat and nitrogen oxides (NO x ), etc., if suitable organic additives such as antioxidants or light stabilizers can be added, the material can be protected from ultraviolet light, heat and NO x Impact. [0003] For example, plastics, resins, cosmetics, pigments, paints, textiles, etc. are easily exposed to light or ultraviolet light and cause discoloration or material decomposition. If chemical substances with anti-oxidation or light-absorbing properties can be added, then This harmful light source can be absorbed or converted into harmless energy to protect the luster and durability of the material. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/3435C08K5/3492C08K5/378C08L75/04C07D211/46C07D211/58C07D211/54
CPCC07D211/20C08K5/005C08K5/24C08K5/3432C08L11/02C08L33/08C08L59/00C08L75/02C08L75/04C08L2201/08
Inventor 苏清镒李昆昌
Owner FDC LEES CHEM IND
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