Dimethylhydarzine stabilizer and stabilizer composition thereof

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

Inactive Publication Date: 2015-03-18
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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  • Dimethylhydarzine stabilizer and stabilizer composition thereof
  • Dimethylhydarzine stabilizer and stabilizer composition thereof
  • Dimethylhydarzine stabilizer and stabilizer composition thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Embodiment 1: synthetic compound A

[0095] In a 500 ml four-neck mechanically stirred bottle, add 250 ml of toluene and 40 g (0.238 moles) of 1,6-hexyl diisocyanate under a nitrogen atmosphere, and slowly add 14.3 grams (0.2383 moles) of 1,1- Dimethylhydrazine, there will be exothermic phenomena during the dripping process, the temperature will naturally rise to 50-55°C, after one hour of reaction, add 37.3 grams of tetramethylpiperidinol, maintain the temperature at 55-60°C for three hours, and then heat up to 90°C, after two hours of reaction, the temperature was raised to 112°C to evaporate the toluene and the residual toluene was evaporated with a circulating water vacuum motor to obtain 89 g of a white solid. Compound structures and results are shown in Table (1).

Embodiment 2

[0096] Embodiment 2: synthetic compound B

[0097] In a 500 ml four-neck mechanical stirring bottle, add 250 ml of toluene and 50 g (0.2 moles) of 4,4'-methylene bis(phenylisocyanate) under nitrogen atmosphere, and slowly add 31.2 grams (0.2 moles) of tetramethylpiperidinamine, there will be exothermic phenomena during the dropping process, and the temperature will naturally rise to 40-45 ° C, after one hour of reaction, add 12.6 grams (0.21 moles) of 1,1-dimethyl Hydrazine, solids will be produced during the dropwise addition process, 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 to obtain 85 grams of light yellow solid. Compound structures and results are shown in Table (1).

Embodiment 3

[0098] Embodiment 3: synthetic compound C

[0099] In a 500 ml four-neck mechanical stirring bottle, add 250 ml of toluene and 47 g (0.188 moles) of 4,4'-methylene bis(phenylisocyanate) under nitrogen atmosphere, and slowly add 32.1 gram (0.188 moles) of 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, and 11.5 grams (0.191 moles) will be added after two hours of reaction 1,1-Dimethylhydrazine, maintain the temperature at 55-60°C for three hours, then raise the temperature to 90°C, react for two hours and then raise the temperature to 112°C to evaporate the toluene and use a circulating water vacuum motor to evaporate the residual toluene to obtain 86 grams of white solid. Compound structures and results are shown in Table (1).

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Abstract

The present invention provides a dimethylhydrazine stabilizer. A stabilizer composition is formed by mixing the dimethylhydrazine stabilizer and additives such as a hindered phenol-based antioxidant, a phosphate-based antioxidant, a phosphite-based antioxidant, a benzotriazole photostabilizer, a hindered amine-based photostabilizer, and a fluorescent brightening agent. The dimethylhydrazine stabilizer is added to an organic material as an antioxidant, a photostabilizer, or a thermal stabilizer. As a result, the dimethylhydrazine stabilizer effectively prevents an organic material from chemical and physical changes induced by light or heat.

Description

technical field [0001] The present invention relates to a dimethylhydrazine stabilizer, in particular to a dimethylhydrazine stabilizer formed by reacting 1,1-dimethylhydrazine with a reactant containing a hindered amine functional group and comprising the dimethylhydrazine stabilizer Stabilizer composition of dimethylhydrazine type stabilizer. 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, dyes, 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, it can be Absorb this harmful light source or convert this harmful...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/26C08K5/24C08L75/04
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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