News Details
Thiester antioxidant
2018-1-7 20:05:28
Thiester antioxidant
Sulfates are used to prevent the oxidative degradation of high polymer compounds and to add human sulfuric acid. Thioester antioxidant antioxidant mechanism is: the sulfur compounds in the process of decomposition of hydrogen peroxide cattle into The Times of sulfonic acid such as decomposition of hydrogen peroxide catalyst, which showed good antioxidant properties. This kind of antioxidant mainly includes: thiodipropionic acid vinegar, January acetophenol [DU gong, P]. Thio2} (T), STP, etc.
The sulfide antioxidant mainly includes dilaurate (DLTP) of thiodipropionate (DLTP), dipropionate (DSTP) and dipropionate (DMTP) of thiodipropionate (DMTP). The anti - oxidant and phenol antioxygenation agent of sulfide and phenol have good synergistic effect, which can obviously improve the long-term thermal oxidation stability of polypropylene. Among them, the synergistic effect of DSTP and phenol antioxidant is better, but it is not compatible with polypropylene.
Thioester antioxidants is polypropylene early use of antioxidants, but due to its poor machining stability, products easy yellowing, and hindered amine light stabilizer and sometimes against the role, can significantly reduce the weatherability. In addition, because of the odor, food packaging applications are limited.
Compared with phosphorus antioxygenation, the development and application of sulfur antioxygenation are very monotonous, and the thiopropyl ester is still dominant. In the future, the development of polymer quantization and functionalized varieties is the development direction of sulfur antioxidant.
The main listed companies are sumilizertp-d, TM610, markao-23, Irganox1035, 1192, etc. Anoxsyn442 new products developed in the recent years, combined with two auxiliary thioester and phosphite antioxidant, the advantages of good stability, color change and durable resistance to weathering, and under the condition of high temperature without peculiar smell escape, but with UV light stabilizer have good synergistic stable effect.
Dilauryl thiodipropionate (DLTP), dilauryl thiodipropionate (DLTP), molecular weight C10H58O4S, relative molecular weight of 514.85. Allow for food in our country only sulfur sulfur ethers antioxidants generation 2 (DLTP) a second laurel propionate, as a kind of peroxide decomposition agent, it can effectively break down grease autooxidation chain reaction of hydrogen peroxide (ROOH), to interrupt the chain reaction, so as to prolong the grease and fat food shelf life of the rich. As an oil-soluble antioxidant, it is not only less toxic, but also has good oxidation resistance and stable performance, while its price is low and has good development prospects.
Dipropyl dipropionate is a white powder or flake. Density 0.915, melting point 39 ~ 40 ℃. Soluble in benzene, toluene, acetone, gasoline and other solvents. It has the effect of breaking down the peroxide. It can be used as an auxiliary antioxidant for polyethylene, polypropylene, ABS resin and polyvinyl chloride. It has the characteristics of non-pollution, non-colouring and high temperature processing. It is made by esterification of dipropionic acid and lauryl alcohol. Food antioxidants can be used for reference gb2760-2011.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Cas no. : 101-02-0
HS: 29209019.00
The most important index of products: colorless, yellow liquid
Density (rho) 2525:1.183-1.192, refractive index (eta 020) : 1.585 1.590, freezing point ° C: 19-24, chloride (Cl - %) : 0.20 or less
Tax refund: the current tax refund of Triphenyl phosphite is 9 percent
Raw materials: phenol, phosphorus trichloride, phosphorus trichloride.
White flocculent solid, is a special kind of sweet smell and lipid smell of sulfur ether. Melting point 38 ℃ above, relative density 0.975 (20 ℃ / 4 ℃). Insoluble in water, soluble in acetone, tetrachloride, benzene, petroleum ether and other organic solvents. At 20 ℃ solubility in various solvents (g / 100 g solvent) : methanol, acetone 20, 9.1 petroleum ether, carbon tetrachloride, benzene 133 100 40. Easy to tint, solubility in oil is small.
DLTP has synergistic effect with BHA and BHT and other phenolic antioxidants, which can be used in production to improve antioxidant performance and reduce toxicity and cost. DLTP has excellent thermal stability, under 200 ℃ for 30 min only 0.7% loss rate, more suitable for baked and Fried food, but also has excellent stability.
Three-step method: using propylene cyanide as the raw material, by condensation with sodium sulphide to produce dipropylene sulfide, hydrolysis into thiodipropionic acid, and then with lauryl alcohol reaction, separated and refined. Two-step method: propylene cyanide as the raw material, condensation of dipropionic acid, and the reaction of lauryl alcohol, separated and refined.
As an antioxidant, it can effectively decompose hydrogen peroxide (ROOH) in oil automatic oxidation chain reaction and achieve the purpose of interrupt chain reaction. Thus prolong the shelf life of fat and fat foods. As an oil-soluble antioxidant, it is not only less toxic, but also has excellent oxidation resistance and stable performance. Gb2760-2011 regulations can be used to protect the antioxidation and fruits and vegetables of fatty food, edible oil, and the maximum use of 0.2g/kg.
The appearance and properties of dipropionate of dipropionate: white flocculation or squamous crystal. Melting point (℃) : 64.5 67.5; Relative density (water =1) : 1.03; Saturated vapor pressure (kPa) : 0.13 (250 ℃); Solubility: soluble in acetone, ether, alcohol, insoluble in cold water. Contraband: strong oxidant.
Dipropionate is stable under normal temperature and stable under normal temperature, away from oxide. White crystalline powder, non-toxic, this product is not flammable, explosive, non-corrosive. Soluble in benzene, chloroform, disulfide and tetrachloride, difficult to dissolve in dimethylformamide and toluene, insoluble in acetone, ethanol and water.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Sulfates are used to prevent the oxidative degradation of high polymer compounds and to add human sulfuric acid. Thioester antioxidant antioxidant mechanism is: the sulfur compounds in the process of decomposition of hydrogen peroxide cattle into The Times of sulfonic acid such as decomposition of hydrogen peroxide catalyst, which showed good antioxidant properties. This kind of antioxidant mainly includes: thiodipropionic acid vinegar, January acetophenol [DU gong, P]. Thio2} (T), STP, etc.
The sulfide antioxidant mainly includes dilaurate (DLTP) of thiodipropionate (DLTP), dipropionate (DSTP) and dipropionate (DMTP) of thiodipropionate (DMTP). The anti - oxidant and phenol antioxygenation agent of sulfide and phenol have good synergistic effect, which can obviously improve the long-term thermal oxidation stability of polypropylene. Among them, the synergistic effect of DSTP and phenol antioxidant is better, but it is not compatible with polypropylene.
Thioester antioxidants is polypropylene early use of antioxidants, but due to its poor machining stability, products easy yellowing, and hindered amine light stabilizer and sometimes against the role, can significantly reduce the weatherability. In addition, because of the odor, food packaging applications are limited.
Compared with phosphorus antioxygenation, the development and application of sulfur antioxygenation are very monotonous, and the thiopropyl ester is still dominant. In the future, the development of polymer quantization and functionalized varieties is the development direction of sulfur antioxidant.
The main listed companies are sumilizertp-d, TM610, markao-23, Irganox1035, 1192, etc. Anoxsyn442 new products developed in the recent years, combined with two auxiliary thioester and phosphite antioxidant, the advantages of good stability, color change and durable resistance to weathering, and under the condition of high temperature without peculiar smell escape, but with UV light stabilizer have good synergistic stable effect.
Dilauryl thiodipropionate (DLTP), dilauryl thiodipropionate (DLTP), molecular weight C10H58O4S, relative molecular weight of 514.85. Allow for food in our country only sulfur sulfur ethers antioxidants generation 2 (DLTP) a second laurel propionate, as a kind of peroxide decomposition agent, it can effectively break down grease autooxidation chain reaction of hydrogen peroxide (ROOH), to interrupt the chain reaction, so as to prolong the grease and fat food shelf life of the rich. As an oil-soluble antioxidant, it is not only less toxic, but also has good oxidation resistance and stable performance, while its price is low and has good development prospects.
Dipropyl dipropionate is a white powder or flake. Density 0.915, melting point 39 ~ 40 ℃. Soluble in benzene, toluene, acetone, gasoline and other solvents. It has the effect of breaking down the peroxide. It can be used as an auxiliary antioxidant for polyethylene, polypropylene, ABS resin and polyvinyl chloride. It has the characteristics of non-pollution, non-colouring and high temperature processing. It is made by esterification of dipropionic acid and lauryl alcohol. Food antioxidants can be used for reference gb2760-2011.
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Cas no. : 101-02-0
HS: 29209019.00
The most important index of products: colorless, yellow liquid
Density (rho) 2525:1.183-1.192, refractive index (eta 020) : 1.585 1.590, freezing point ° C: 19-24, chloride (Cl - %) : 0.20 or less
Tax refund: the current tax refund of Triphenyl phosphite is 9 percent
Raw materials: phenol, phosphorus trichloride, phosphorus trichloride.
White flocculent solid, is a special kind of sweet smell and lipid smell of sulfur ether. Melting point 38 ℃ above, relative density 0.975 (20 ℃ / 4 ℃). Insoluble in water, soluble in acetone, tetrachloride, benzene, petroleum ether and other organic solvents. At 20 ℃ solubility in various solvents (g / 100 g solvent) : methanol, acetone 20, 9.1 petroleum ether, carbon tetrachloride, benzene 133 100 40. Easy to tint, solubility in oil is small.
DLTP has synergistic effect with BHA and BHT and other phenolic antioxidants, which can be used in production to improve antioxidant performance and reduce toxicity and cost. DLTP has excellent thermal stability, under 200 ℃ for 30 min only 0.7% loss rate, more suitable for baked and Fried food, but also has excellent stability.
Three-step method: using propylene cyanide as the raw material, by condensation with sodium sulphide to produce dipropylene sulfide, hydrolysis into thiodipropionic acid, and then with lauryl alcohol reaction, separated and refined. Two-step method: propylene cyanide as the raw material, condensation of dipropionic acid, and the reaction of lauryl alcohol, separated and refined.
As an antioxidant, it can effectively decompose hydrogen peroxide (ROOH) in oil automatic oxidation chain reaction and achieve the purpose of interrupt chain reaction. Thus prolong the shelf life of fat and fat foods. As an oil-soluble antioxidant, it is not only less toxic, but also has excellent oxidation resistance and stable performance. Gb2760-2011 regulations can be used to protect the antioxidation and fruits and vegetables of fatty food, edible oil, and the maximum use of 0.2g/kg.
The appearance and properties of dipropionate of dipropionate: white flocculation or squamous crystal. Melting point (℃) : 64.5 67.5; Relative density (water =1) : 1.03; Saturated vapor pressure (kPa) : 0.13 (250 ℃); Solubility: soluble in acetone, ether, alcohol, insoluble in cold water. Contraband: strong oxidant.
Dipropionate is stable under normal temperature and stable under normal temperature, away from oxide. White crystalline powder, non-toxic, this product is not flammable, explosive, non-corrosive. Soluble in benzene, chloroform, disulfide and tetrachloride, difficult to dissolve in dimethylformamide and toluene, insoluble in acetone, ethanol and water.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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