News Details
On auxiliary antioxidants
2018-1-5 16:15:11
On auxiliary antioxidants
Thio two propionic acid diester is auxiliary antioxidants, auxiliary antioxidants and hindered phenolic antioxidants and use, obvious effect, the main products are: ethyl alcohol ester, fourteen alcohol ester and eighteen alcohol ester.
Phosphite is also an auxiliary antioxidant, and the main products are three octyl, three decyl ester, three (twelve - carbon alcohol) ester and three (sixteen - carbon alcohol) ester.
Phosphite antioxidant and sulfur-containing antioxidant as auxiliary antioxidant, decomposition of peroxides, metal chelate and Lewis acid has a good synergistic effect with other antioxidants, while giving the plastic thermal stability and light stability, harmful metal passivation, slow polymer polymerization.
Phosphite antioxidant mainly for antioxidant 168 three (1,4 Di tert butyl phenyl) phosphite, antioxidant 626 [bis (2,4 tert butyl phenyl) pentaerythritol phosphate two] and antioxidant 618[(eighteen double alkyl) pentaerythritol phosphite] two. 168 is the domestic production and consumption of antioxidants next to 1010 only, the domestic production of 1010 and 1076 of the manufacturers are also produced by 168. 626 and 618 are mainly used for high temperature processing of 300 plastic materials or products. The purpose is to effectively improve the high temperature thermal oxidation resistance of plastic materials, while maintaining the good appearance of plastic products.
Antioxidant 168 is an excellent phosphite antioxidant. It has strong resistance to extraction, stable hydrolysis, and can significantly improve the light stability of products. It can be combined with many phenolic antioxidants. For example, Cyanox2777 is a compound of antioxidant 168 and phenolic antioxidant 1790. The combination of phosphite and phenolic antioxidants can give full play to the synergistic effect. The phosphite in the components is an auxiliary antioxidant, which can not play a long-term role in stabilizing. However, it has a good combination effect with hindered phenol, and it can be applied to many kinds of polymers.
Antioxidant 168 is an auxiliary antioxidant, which has good synergistic effect with the main antioxidant zm-1010 or 1076. It can effectively prevent thermal degradation of polypropylene and polyethylene in basic injection, and provide extra long-term protection for polymers.
Antioxidant 168 is no coloring, no pollution, and good volatility. It is used in polyethylene, polypropylene, polystyrene, polyester and polyamide products. Widely used in polyolefin, styrene monomers and copolymers, elastomers, adhesives, engineering plastics (such as PE, PP, PVC, PS, polyamide, polycarbonate, ABS) and other polymer materials.
Triphenyl phosphite (antioxidant, stabilizer TPPi) production process
1. Phosphorus oxychloride as the direct method (also called thermal method) phenol with pyridine and anhydrous benzene as solvent, in no more than 10 ℃ temperature, slowly add oxygen phosphorus chloride, then under reflux temperature, the reaction of 3 ~ 4 h. After cooling to room temperature, the reactants are washed by water to recycle pyridine. After centrifugal dehydration, the reagents are dehydrated with dried sodium sulfate, which is filtered to remove sodium sulfate. The first atmospheric distillation recovery of benzene, vacuum distillation, collected 243 ~ 245 ℃ (1.47 kPa) fraction, by cooling, crystallization, crushing is the finished product.
2. After phenol melting, stirring under add phosphorus trichloride under 25 ℃, Triphenyl phosphite is generated; Then heat up to 70 ℃ ventilation with chlorine gas, generated two chlorinated triphenyl phosphate; Again at 50 ℃ water hydrolysis, triphenyl phosphate. The hydrolysate with 5% soda solution for neutralization, water washing, the evaporation and vacuum distillation, collected 243 ~ 245 ℃ (1.47 kPa) fractions, cooling, crystallization, crushing, packaging is the finished product.
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.
626 a phosphite antioxidant auxiliary antioxidant, antioxidant 168 as general product upgrading, is characterized by anti yellowing, high transparency, is an organic synthesis of low volatile anti oxygen inhibitor, is widely used in the synthesis and processing of polypropylene, polyethylene, ABS, polycarbonate fiber and polyester resin and other plastic.
Antioxidant 626 appearance is white crystalline powder or granules; the melting range of 170-180 DEG C; the flash point of 168 DEG C; the ignition point of 421 DEG C; bulk density 0.43g/mL; dust explosion concentration limit 0.12Kg/m3, explosive index 0.37; soluble in organic solvents such as toluene, dichloromethane, slightly soluble in alcohol, insoluble in water. The hydrolysis resistance is poor. Should pay attention to moisture, thermal stability and chemical properties of the product. This product is a highly effective acid phosphite auxiliary antioxidant, which has a good compatibility with most of the polymers. It has a good effect on preventing light and heat from discoloration, and also has a certain light stabilization.
Antioxidant 626 is a high performance solid organic phosphite antioxidant, the polymer color has a good protective effect, better than other phosphite, generally not used alone, often with antioxidant 1010 phenol antioxidant compound use, can improve the thermal stability of polymer processing. 626 after the compound of phenolic antioxidant, it is widely used in PE, PP, PS, polyamide, polycarbonate, ABS and other polymer materials.
Antioxidant 618, also known as AP-618, pentaerythritol two phosphoric acid double eighteen ester, pentaerythritol two phosphoric acid two stearyl ester, white wax thin slice solid. Due to pentaerythritol structure and high molecular weight characteristics, it can be used in conjunction with hindered phenolic antioxidants in high temperature processing of polymeric materials, as high temperature antioxidant antioxidant 618 for polyethylene, polypropylene, polyvinyl chloride and polyester.
Used as high temperature antioxidant, with hindered phenolic antioxidants, for ABS, PS, HIPS, NBR, SBS, PP, PE, LLDPE, PVC, PC, PA, PET, UP, polyamide fiber, polyester fiber, adhesives, coatings, inks, composite additives production and processing, calcium and zinc stable agent etc..
With the structure of double phosphite, the content of alkyl trivalent phosphorus is higher, which makes the effect of anti oxygen more prominent and efficient. Approved by many food and health institutions, it can be used for food packaging materials (TITLE21 CFR.178.2010), because the structure does not contain alkylphenol, which is in line with the latest market regulations and development trend, and is better with UV absorber.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Thio two propionic acid diester is auxiliary antioxidants, auxiliary antioxidants and hindered phenolic antioxidants and use, obvious effect, the main products are: ethyl alcohol ester, fourteen alcohol ester and eighteen alcohol ester.
Phosphite is also an auxiliary antioxidant, and the main products are three octyl, three decyl ester, three (twelve - carbon alcohol) ester and three (sixteen - carbon alcohol) ester.
Phosphite antioxidant and sulfur-containing antioxidant as auxiliary antioxidant, decomposition of peroxides, metal chelate and Lewis acid has a good synergistic effect with other antioxidants, while giving the plastic thermal stability and light stability, harmful metal passivation, slow polymer polymerization.
Phosphite antioxidant mainly for antioxidant 168 three (1,4 Di tert butyl phenyl) phosphite, antioxidant 626 [bis (2,4 tert butyl phenyl) pentaerythritol phosphate two] and antioxidant 618[(eighteen double alkyl) pentaerythritol phosphite] two. 168 is the domestic production and consumption of antioxidants next to 1010 only, the domestic production of 1010 and 1076 of the manufacturers are also produced by 168. 626 and 618 are mainly used for high temperature processing of 300 plastic materials or products. The purpose is to effectively improve the high temperature thermal oxidation resistance of plastic materials, while maintaining the good appearance of plastic products.
Antioxidant 168 is an excellent phosphite antioxidant. It has strong resistance to extraction, stable hydrolysis, and can significantly improve the light stability of products. It can be combined with many phenolic antioxidants. For example, Cyanox2777 is a compound of antioxidant 168 and phenolic antioxidant 1790. The combination of phosphite and phenolic antioxidants can give full play to the synergistic effect. The phosphite in the components is an auxiliary antioxidant, which can not play a long-term role in stabilizing. However, it has a good combination effect with hindered phenol, and it can be applied to many kinds of polymers.
Antioxidant 168 is an auxiliary antioxidant, which has good synergistic effect with the main antioxidant zm-1010 or 1076. It can effectively prevent thermal degradation of polypropylene and polyethylene in basic injection, and provide extra long-term protection for polymers.
Antioxidant 168 is no coloring, no pollution, and good volatility. It is used in polyethylene, polypropylene, polystyrene, polyester and polyamide products. Widely used in polyolefin, styrene monomers and copolymers, elastomers, adhesives, engineering plastics (such as PE, PP, PVC, PS, polyamide, polycarbonate, ABS) and other polymer materials.
Triphenyl phosphite (antioxidant, stabilizer TPPi) production process
1. Phosphorus oxychloride as the direct method (also called thermal method) phenol with pyridine and anhydrous benzene as solvent, in no more than 10 ℃ temperature, slowly add oxygen phosphorus chloride, then under reflux temperature, the reaction of 3 ~ 4 h. After cooling to room temperature, the reactants are washed by water to recycle pyridine. After centrifugal dehydration, the reagents are dehydrated with dried sodium sulfate, which is filtered to remove sodium sulfate. The first atmospheric distillation recovery of benzene, vacuum distillation, collected 243 ~ 245 ℃ (1.47 kPa) fraction, by cooling, crystallization, crushing is the finished product.
2. After phenol melting, stirring under add phosphorus trichloride under 25 ℃, Triphenyl phosphite is generated; Then heat up to 70 ℃ ventilation with chlorine gas, generated two chlorinated triphenyl phosphate; Again at 50 ℃ water hydrolysis, triphenyl phosphate. The hydrolysate with 5% soda solution for neutralization, water washing, the evaporation and vacuum distillation, collected 243 ~ 245 ℃ (1.47 kPa) fractions, cooling, crystallization, crushing, packaging is the finished product.
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.
626 a phosphite antioxidant auxiliary antioxidant, antioxidant 168 as general product upgrading, is characterized by anti yellowing, high transparency, is an organic synthesis of low volatile anti oxygen inhibitor, is widely used in the synthesis and processing of polypropylene, polyethylene, ABS, polycarbonate fiber and polyester resin and other plastic.
Antioxidant 626 appearance is white crystalline powder or granules; the melting range of 170-180 DEG C; the flash point of 168 DEG C; the ignition point of 421 DEG C; bulk density 0.43g/mL; dust explosion concentration limit 0.12Kg/m3, explosive index 0.37; soluble in organic solvents such as toluene, dichloromethane, slightly soluble in alcohol, insoluble in water. The hydrolysis resistance is poor. Should pay attention to moisture, thermal stability and chemical properties of the product. This product is a highly effective acid phosphite auxiliary antioxidant, which has a good compatibility with most of the polymers. It has a good effect on preventing light and heat from discoloration, and also has a certain light stabilization.
Antioxidant 626 is a high performance solid organic phosphite antioxidant, the polymer color has a good protective effect, better than other phosphite, generally not used alone, often with antioxidant 1010 phenol antioxidant compound use, can improve the thermal stability of polymer processing. 626 after the compound of phenolic antioxidant, it is widely used in PE, PP, PS, polyamide, polycarbonate, ABS and other polymer materials.
Antioxidant 618, also known as AP-618, pentaerythritol two phosphoric acid double eighteen ester, pentaerythritol two phosphoric acid two stearyl ester, white wax thin slice solid. Due to pentaerythritol structure and high molecular weight characteristics, it can be used in conjunction with hindered phenolic antioxidants in high temperature processing of polymeric materials, as high temperature antioxidant antioxidant 618 for polyethylene, polypropylene, polyvinyl chloride and polyester.
Used as high temperature antioxidant, with hindered phenolic antioxidants, for ABS, PS, HIPS, NBR, SBS, PP, PE, LLDPE, PVC, PC, PA, PET, UP, polyamide fiber, polyester fiber, adhesives, coatings, inks, composite additives production and processing, calcium and zinc stable agent etc..
With the structure of double phosphite, the content of alkyl trivalent phosphorus is higher, which makes the effect of anti oxygen more prominent and efficient. Approved by many food and health institutions, it can be used for food packaging materials (TITLE21 CFR.178.2010), because the structure does not contain alkylphenol, which is in line with the latest market regulations and development trend, and is better with UV absorber.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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