News Details
Ash free antioxidant
2018-1-11 11:20:36
Ash free antioxidant
There is a gray - type anti - oxidant in the direction of non - gray - type antioxidant. Ash - free antioxidant is an antioxidant that does not contain metal elements in the molecular structure of antioxidants. With the continuous improvement of mechanical and vehicle design technology and to small, high speed, heavy load and high power in the direction of development, has the ammonia in grey agent used in such conditions would produce "ash" and sludge formation, which affects the normal work of the machine, accelerate the parts wear and tear.
Therefore, it is the research direction of antioxidant in recent years to replace grey type antioxidant with grey type antioxidant. For example, there has been remarkable progress in replacing ZDDP with the products produced by the action of dialkyl dithiophosphoric acid and unsaturated compound. These compounds have the same performance as ZDDP, but can reduce ash content.
For example, the performance of dibutyl dithiophosphoric acid is similar to that of hyperbolic -11 additive, but the ash content is only 0.1% ~ 0.5%, while the ash content of hyperbolic -11 is 17.5%. 13ma-5 (used as raw materials for vinyl acetate), T9 (made from styrene), and A non-gray antioxidant L165 (with methyl acrylate as raw material) were developed.
In addition, in recent years, the products derived from dialkyl dithiocarbamic acid and unsaturated compounds have been studied in the study of grease-free antioxidant. In conclusion, it is one of the trends of antioxidant research in recent years to replace grey type antioxidant with grey type antioxidant.
Alkyl dithio carbamate compounds used as lubricating oil antioxidants are mainly zinc dialkyl dithiocarbamate, molybdenum dialkyl dithiocarbamate, dialkyl dithiocarbamate antimony and dialkyl dithiocarbamate cadmium, etc.
For example, zinc dialkyl dithiocarbamate is a multi - effect additive, especially in high temperature condition. Copper dialkyl dithiocarbamate has good anti-oxidation properties and anti-corrosion properties. In addition, do not contain metal dialkyl dithiocarbamate ester is a kind of important type antioxidant ash-free peroxide decomposition, it has to do with shielding phenol free radical scavenger and amine antioxidants have a good distribution effect, can effectively inhibit oil viscosity caused by high temperature oxidation growth, also can control the formation of oil sludge.
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.
The synergistic effect of dialkyl dithiocarbamate and many additives can improve the efficiency of other additives, and it is not easy to lose the activity under high temperature conditions. At the same time, it has good extreme pressure effect in higher content, and can replace ZDDP in part. When used as an antioxidant, the quality score was 0.1% ~ 1.0%; The quality score as an extreme pressure agent was 2.0% ~ 4.0%. It is mainly used in turbine oil, hydraulic oil, gear oil and internal combustion engine oil, which can improve the anti-oxidation and wear resistance of oil products. The Timken OK load can be increased in grease.
Organophosphorus compounds are a kind of important lubricating oil additives, and the phosphorous additives have excellent anti-wear effect on the rough surface of friction and the surface contact of the slowly sliding metal surface. Such as phosphite ester and Triphenyl phosphite is an effective antioxidant for many oil base oil, acid phosphite dodecyl ester besides has good anti-wear performance of antifriction, at the same time has good thermal stability, anticorrosion and anti-wear durability.
Phosphite can eliminate the oxygen free radicals and alkoxyl radical, and can inhibit photodegradation. In addition to being an important antioxidant, it is also an excellent antiwear agent. Phosphoric acid is a versatile additive with good anti-corrosion, anti-wear and anti-friction properties. It is widely used in industrial oil, grease and gear oil. Due to the strong polarity of phosphoric acid, it is easy to react with other additives, so special attention should be paid to the use.
The most important characteristic of organic sulfur antioxidants is the elimination of peroxides as acid catalytic decomposers, which can react with hydrogen peroxide to generate sulfone or sulfoxide, which is relatively stable.
Some aromatic and aliphatic sulfide can also be used to inhibit oil oxidation and corrosion of sulfur-containing aromatic compounds including dibenzyl sulfide, dimethyl benzyl disulfide or sixteen alkyl sulfides; In addition, alkyl phenol sulfides also has good oxidation resistance, available to the hydroxyl alkyl phenol sulfides to metal processing, forming oil soluble metal alkoxide, these metal alkoxide play a dual role of the clearing agent and antioxidant. The sulfur-containing compounds derived from beta-thiodianol are the antioxidants of the automatic transmission fluid.
Shielding phenol ash-free antioxidants [3 - (3, 5-2 tertiary butyl - 4 - hydroxy phenyl) acrylic diisooctyl] is a good oil solubility and high temperature oxidation resistance excellent ash-free antioxidant, it not only has good oxidation resistance, and has good control ability of sludge formation, with the rest of the lubricating oil additive has good compatibility and compatibility. Containing sulfide type structure of hindered phenolic antioxidants in API Ⅱ, Ⅲ class base oil of antioxidant effect is good.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
There is a gray - type anti - oxidant in the direction of non - gray - type antioxidant. Ash - free antioxidant is an antioxidant that does not contain metal elements in the molecular structure of antioxidants. With the continuous improvement of mechanical and vehicle design technology and to small, high speed, heavy load and high power in the direction of development, has the ammonia in grey agent used in such conditions would produce "ash" and sludge formation, which affects the normal work of the machine, accelerate the parts wear and tear.
Therefore, it is the research direction of antioxidant in recent years to replace grey type antioxidant with grey type antioxidant. For example, there has been remarkable progress in replacing ZDDP with the products produced by the action of dialkyl dithiophosphoric acid and unsaturated compound. These compounds have the same performance as ZDDP, but can reduce ash content.
For example, the performance of dibutyl dithiophosphoric acid is similar to that of hyperbolic -11 additive, but the ash content is only 0.1% ~ 0.5%, while the ash content of hyperbolic -11 is 17.5%. 13ma-5 (used as raw materials for vinyl acetate), T9 (made from styrene), and A non-gray antioxidant L165 (with methyl acrylate as raw material) were developed.
In addition, in recent years, the products derived from dialkyl dithiocarbamic acid and unsaturated compounds have been studied in the study of grease-free antioxidant. In conclusion, it is one of the trends of antioxidant research in recent years to replace grey type antioxidant with grey type antioxidant.
Alkyl dithio carbamate compounds used as lubricating oil antioxidants are mainly zinc dialkyl dithiocarbamate, molybdenum dialkyl dithiocarbamate, dialkyl dithiocarbamate antimony and dialkyl dithiocarbamate cadmium, etc.
For example, zinc dialkyl dithiocarbamate is a multi - effect additive, especially in high temperature condition. Copper dialkyl dithiocarbamate has good anti-oxidation properties and anti-corrosion properties. In addition, do not contain metal dialkyl dithiocarbamate ester is a kind of important type antioxidant ash-free peroxide decomposition, it has to do with shielding phenol free radical scavenger and amine antioxidants have a good distribution effect, can effectively inhibit oil viscosity caused by high temperature oxidation growth, also can control the formation of oil sludge.
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.
The synergistic effect of dialkyl dithiocarbamate and many additives can improve the efficiency of other additives, and it is not easy to lose the activity under high temperature conditions. At the same time, it has good extreme pressure effect in higher content, and can replace ZDDP in part. When used as an antioxidant, the quality score was 0.1% ~ 1.0%; The quality score as an extreme pressure agent was 2.0% ~ 4.0%. It is mainly used in turbine oil, hydraulic oil, gear oil and internal combustion engine oil, which can improve the anti-oxidation and wear resistance of oil products. The Timken OK load can be increased in grease.
Organophosphorus compounds are a kind of important lubricating oil additives, and the phosphorous additives have excellent anti-wear effect on the rough surface of friction and the surface contact of the slowly sliding metal surface. Such as phosphite ester and Triphenyl phosphite is an effective antioxidant for many oil base oil, acid phosphite dodecyl ester besides has good anti-wear performance of antifriction, at the same time has good thermal stability, anticorrosion and anti-wear durability.
Phosphite can eliminate the oxygen free radicals and alkoxyl radical, and can inhibit photodegradation. In addition to being an important antioxidant, it is also an excellent antiwear agent. Phosphoric acid is a versatile additive with good anti-corrosion, anti-wear and anti-friction properties. It is widely used in industrial oil, grease and gear oil. Due to the strong polarity of phosphoric acid, it is easy to react with other additives, so special attention should be paid to the use.
The most important characteristic of organic sulfur antioxidants is the elimination of peroxides as acid catalytic decomposers, which can react with hydrogen peroxide to generate sulfone or sulfoxide, which is relatively stable.
Some aromatic and aliphatic sulfide can also be used to inhibit oil oxidation and corrosion of sulfur-containing aromatic compounds including dibenzyl sulfide, dimethyl benzyl disulfide or sixteen alkyl sulfides; In addition, alkyl phenol sulfides also has good oxidation resistance, available to the hydroxyl alkyl phenol sulfides to metal processing, forming oil soluble metal alkoxide, these metal alkoxide play a dual role of the clearing agent and antioxidant. The sulfur-containing compounds derived from beta-thiodianol are the antioxidants of the automatic transmission fluid.
Shielding phenol ash-free antioxidants [3 - (3, 5-2 tertiary butyl - 4 - hydroxy phenyl) acrylic diisooctyl] is a good oil solubility and high temperature oxidation resistance excellent ash-free antioxidant, it not only has good oxidation resistance, and has good control ability of sludge formation, with the rest of the lubricating oil additive has good compatibility and compatibility. Containing sulfide type structure of hindered phenolic antioxidants in API Ⅱ, Ⅲ class base oil of antioxidant effect is good.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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