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Classification of plasticizers
2017-12-11 11:37:59
Classification of plasticizers
There are many kinds of plasticizers. In their research and development stages, there are more than 1000 kinds of plasticizers. As a commodity, plasticizer has more than 200 plasticizers, and its raw materials come from petrochemical industry, which is the largest proportion of o-benzoic acid two formate.
There are many classifications of plasticizers. Plasticizer classified according to molecular size can be divided into single type plasticizer and polymeric plasticizer plasticizer; classification according to the shape can be divided into liquid and solid plasticizer plasticizer; plasticizer classification according to the performance can be divided into general plasticizer, cold resistant plasticizer heat resistant agent, plasticizer, flame retardant plasticizer plasticizer; according to the classification of chemical structure is commonly used classification methods.
The plasticizer is divided into the following types according to the chemical structure:
(1) benzoic acid esters (including phthalic, phenylene, and benzoate two formate).
(2) aliphatic dicarboxylic acid esters (including azelaic acid, adipic acid ester, two esters, two octyl decyl two adipic acid and sebacic acid ester DOS DOA two).
(3) phosphate esters (including fatty alcohol phosphate, phofophosphate and chlorophosphate, trimethylamine phosphate TCP, toluene two benzyl ester).
(4) polyol ester (including three glycerol acetate, diethylene glycol benzoate etc.).
(5) benzoic acid esters (including three octyl benzoic acid, three hexatenoic acid, three hexatenoic acid, four acid four ester, and three isooctyl ester of 1,2,4 - diphenyl trisic acid).
(6) citrate [including citric acid three ethyl ester, acetyl citric acid three ethyl ester, citric acid three butyl ester, acetyl citric acid three (2- ethyl already) ester etc.].
(7) polyester (including propanediol adipate polyester, decanediol propylene glycol polyester, phthalic acid two formic acid polyester, etc.).
(8) epoxy (including epoxy soybean oil, linseed oil, epoxy, epoxy, epoxy oleic butyl octyl stearate, epoxidized triglycerides, epoxy four hydrogen phthalate two formic acid two ester etc.).
(9) chlorine containing (including chlorinated paraffin, five chlorinated stearic acid methyl ester).
(10) a reactive plasticizer (including maleic acid, maleic acid two two butyl octyl ester, acrylic acid / methyl acrylic polyol ester, fumaric acid, itaconic acid, unsaturated polyester resin, etc.).
The basic information of two octyl terephthalate (plasticizer DOTP)
Chinese Name: two octyl terephthalate
Synonyms: two Chinese terephthalate (2- ethylhexyl) ester; dioctyl terephthalate two; terephthalic acid two 1,4- benzene carboxylic acid isooctyl ester; two bis (2- ethylhexyl) ester; terephthalic acid two (2- ethylhexyl) ester; dioctyl terephthalate (DOTP); two double 2= ethylhexyl terephthalate; bis (2- ethylhexyl) terephthalic acid, plasticizer DOTP
English Name: Dioctyl terephthalate
English synonyms are: Di- (2-Ethylhexyl) Terephthalate; Di (2Ethylhexyl) Terephthalate; Kodaflexdotp; Terephthalicacid, Bis (2-Ethylhexyl) Ester; Bis;; ";"
CAS: 6422-86-2
Molecular formula: C24H38O4
Molecular weight: 390.56
EINECS: 229-176
Use of two octyl terephthalate (plasticizer DOTP)
1.DOTP has good electrical and thermal properties. It can be used to replace DOP in the sheath of PVC plastic wire and can also be used in the production of artificial leather membrane. In addition, with excellent compatibility, terephthalic acid ester is two PVC acrylonitrile derivatives plastic plasticizer, plasticizer, plasticizer, polyvinyl butyral nitrile rubber plasticizer, plasticizer for cellulose nitrate. The improvement of the product and plays the role of hardness and deformation, can be used as softener in NBR, chloroprene rubber, EPDM rubber and other products three. Especially for cable material, it has good plasticizing effect and low volatility. It is widely used in various products that require heat resistance and high insulation. It is an ideal plasticizer for producing 70 PVC cable material and other volatile resistant products.
2.DOTP is used for the PVC products in the car, which can solve the fog problem of the glass window. DOTP is also used for high quality lubricants or lubricant additives furniture and interior decoration paint, and precision instruments, nitro varnish additives, paper softener, biaxially oriented polyester amide membrane film, plastic bags and other crafts, plasma storage.
3. because the linear molecular structure of DOTP is similar to DOS and DOA, its cold resistance is also better.
The volume resistivity of 4.DOTP is 10-20 times higher than that of DOP, and its mobility is excellent.
5., because DOTP does not contain o-phthalate two formate, it is not an environmental friendly plasticizer in the range of 16 16 kinds of plasticizers containing o-phthalic acid in the European Union and other countries.
(11) phthalate esters of two formates (such as DBP, DOP, DIDP)
(12) alkyl sulfonate
(13) polyol ester
(14) other plasticizers
The intermittent production device, the so-called "universal" production device. The device can handle more than 60 kinds of raw materials, in addition to the general production of the adjacent benzene two formic acid ester, aliphatic dicarboxylic acid ester can produce other kinds of plasticizer.
In the batch production of phthalate, the process conditions are very similar and different with the properties of alcohol and products of the raw materials. Taking the production of DBP as an example, esterification reaction of phthalic anhydride and n-butanol in the presence of acidic catalyst (such as H2SO4) is carried out. In order to make the equilibrium reaction beneficial to the generation of DBP, the water generated from esterification reaction is continuously removed in the reaction process, and a proper amount of n-butanol is added to it.
After esterification, NaOH was added to neutralize H2SO4 and separated into wastewater by stratification. Then dealcoholation was carried out, and the unreacted n-butanol was removed under the condition of decompression. After adding the decolorization of activated carbon, after decolorization, the final product DBP is obtained by filtration. The production process diagram of DBP shows that there are five production processes: esterification, neutralization, dealcoholization, decolorization and filtration. Five processes in the batch process are all intermittent operation.
In the total yield of plasticizers, phthalate esters accounted for more than 80% of the total output, and DOP and DBP were the leading products. Taking DBP as an example, the reaction mechanism of phthalate two formate was introduced.
Most of the production of DBP in China is under normal pressure, and the reaction of the raw material, phthalic anhydride and n-butanol, in the presence of acid catalyst (such as H2SO4). Acid catalyst is a traditional esterification catalyst. It has high activity, and is cheap and easy to obtain. Its disadvantage is easy to cause side effects.
The first esterification reaction is a phthalic anhydride molecule and a alcohol molecule to form o-butyl benzoic acid two butyl ester. The reaction is exothermic reaction without catalyst, generally at 120 C.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
There are many kinds of plasticizers. In their research and development stages, there are more than 1000 kinds of plasticizers. As a commodity, plasticizer has more than 200 plasticizers, and its raw materials come from petrochemical industry, which is the largest proportion of o-benzoic acid two formate.
There are many classifications of plasticizers. Plasticizer classified according to molecular size can be divided into single type plasticizer and polymeric plasticizer plasticizer; classification according to the shape can be divided into liquid and solid plasticizer plasticizer; plasticizer classification according to the performance can be divided into general plasticizer, cold resistant plasticizer heat resistant agent, plasticizer, flame retardant plasticizer plasticizer; according to the classification of chemical structure is commonly used classification methods.
The plasticizer is divided into the following types according to the chemical structure:
(1) benzoic acid esters (including phthalic, phenylene, and benzoate two formate).
(2) aliphatic dicarboxylic acid esters (including azelaic acid, adipic acid ester, two esters, two octyl decyl two adipic acid and sebacic acid ester DOS DOA two).
(3) phosphate esters (including fatty alcohol phosphate, phofophosphate and chlorophosphate, trimethylamine phosphate TCP, toluene two benzyl ester).
(4) polyol ester (including three glycerol acetate, diethylene glycol benzoate etc.).
(5) benzoic acid esters (including three octyl benzoic acid, three hexatenoic acid, three hexatenoic acid, four acid four ester, and three isooctyl ester of 1,2,4 - diphenyl trisic acid).
(6) citrate [including citric acid three ethyl ester, acetyl citric acid three ethyl ester, citric acid three butyl ester, acetyl citric acid three (2- ethyl already) ester etc.].
(7) polyester (including propanediol adipate polyester, decanediol propylene glycol polyester, phthalic acid two formic acid polyester, etc.).
(8) epoxy (including epoxy soybean oil, linseed oil, epoxy, epoxy, epoxy oleic butyl octyl stearate, epoxidized triglycerides, epoxy four hydrogen phthalate two formic acid two ester etc.).
(9) chlorine containing (including chlorinated paraffin, five chlorinated stearic acid methyl ester).
(10) a reactive plasticizer (including maleic acid, maleic acid two two butyl octyl ester, acrylic acid / methyl acrylic polyol ester, fumaric acid, itaconic acid, unsaturated polyester resin, etc.).
The basic information of two octyl terephthalate (plasticizer DOTP)
Chinese Name: two octyl terephthalate
Synonyms: two Chinese terephthalate (2- ethylhexyl) ester; dioctyl terephthalate two; terephthalic acid two 1,4- benzene carboxylic acid isooctyl ester; two bis (2- ethylhexyl) ester; terephthalic acid two (2- ethylhexyl) ester; dioctyl terephthalate (DOTP); two double 2= ethylhexyl terephthalate; bis (2- ethylhexyl) terephthalic acid, plasticizer DOTP
English Name: Dioctyl terephthalate
English synonyms are: Di- (2-Ethylhexyl) Terephthalate; Di (2Ethylhexyl) Terephthalate; Kodaflexdotp; Terephthalicacid, Bis (2-Ethylhexyl) Ester; Bis;; ";"
CAS: 6422-86-2
Molecular formula: C24H38O4
Molecular weight: 390.56
EINECS: 229-176
Use of two octyl terephthalate (plasticizer DOTP)
1.DOTP has good electrical and thermal properties. It can be used to replace DOP in the sheath of PVC plastic wire and can also be used in the production of artificial leather membrane. In addition, with excellent compatibility, terephthalic acid ester is two PVC acrylonitrile derivatives plastic plasticizer, plasticizer, plasticizer, polyvinyl butyral nitrile rubber plasticizer, plasticizer for cellulose nitrate. The improvement of the product and plays the role of hardness and deformation, can be used as softener in NBR, chloroprene rubber, EPDM rubber and other products three. Especially for cable material, it has good plasticizing effect and low volatility. It is widely used in various products that require heat resistance and high insulation. It is an ideal plasticizer for producing 70 PVC cable material and other volatile resistant products.
2.DOTP is used for the PVC products in the car, which can solve the fog problem of the glass window. DOTP is also used for high quality lubricants or lubricant additives furniture and interior decoration paint, and precision instruments, nitro varnish additives, paper softener, biaxially oriented polyester amide membrane film, plastic bags and other crafts, plasma storage.
3. because the linear molecular structure of DOTP is similar to DOS and DOA, its cold resistance is also better.
The volume resistivity of 4.DOTP is 10-20 times higher than that of DOP, and its mobility is excellent.
5., because DOTP does not contain o-phthalate two formate, it is not an environmental friendly plasticizer in the range of 16 16 kinds of plasticizers containing o-phthalic acid in the European Union and other countries.
(11) phthalate esters of two formates (such as DBP, DOP, DIDP)
(12) alkyl sulfonate
(13) polyol ester
(14) other plasticizers
The intermittent production device, the so-called "universal" production device. The device can handle more than 60 kinds of raw materials, in addition to the general production of the adjacent benzene two formic acid ester, aliphatic dicarboxylic acid ester can produce other kinds of plasticizer.
In the batch production of phthalate, the process conditions are very similar and different with the properties of alcohol and products of the raw materials. Taking the production of DBP as an example, esterification reaction of phthalic anhydride and n-butanol in the presence of acidic catalyst (such as H2SO4) is carried out. In order to make the equilibrium reaction beneficial to the generation of DBP, the water generated from esterification reaction is continuously removed in the reaction process, and a proper amount of n-butanol is added to it.
After esterification, NaOH was added to neutralize H2SO4 and separated into wastewater by stratification. Then dealcoholation was carried out, and the unreacted n-butanol was removed under the condition of decompression. After adding the decolorization of activated carbon, after decolorization, the final product DBP is obtained by filtration. The production process diagram of DBP shows that there are five production processes: esterification, neutralization, dealcoholization, decolorization and filtration. Five processes in the batch process are all intermittent operation.
In the total yield of plasticizers, phthalate esters accounted for more than 80% of the total output, and DOP and DBP were the leading products. Taking DBP as an example, the reaction mechanism of phthalate two formate was introduced.
Most of the production of DBP in China is under normal pressure, and the reaction of the raw material, phthalic anhydride and n-butanol, in the presence of acid catalyst (such as H2SO4). Acid catalyst is a traditional esterification catalyst. It has high activity, and is cheap and easy to obtain. Its disadvantage is easy to cause side effects.
The first esterification reaction is a phthalic anhydride molecule and a alcohol molecule to form o-butyl benzoic acid two butyl ester. The reaction is exothermic reaction without catalyst, generally at 120 C.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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