Technobell offers plants designed to produce different plasticizers: phthalates, maleates, sebacates, trimelitates and others.
Plasticizers are additives that increase the plasticity or fluidity of the material to which they are added, including plastics, cement, concrete, wallboard and clay bodies. Although the same compounds are often used for both plastics and concretes, the desired effect is slightly different. Plasticizers for plastics are additives, most commonly phthalates, that give hard plastics the desired flexibility and durability.
MAIN ADVANTAGES OF TECHNOBELL’S PLASTICIZERS PRODUCTION PROCESS
- STABILE QUALITY
Highly accurate control both of the time/temperature diagram of the reactor obtains the best possible results and avoids the formation of by-products. The supplied laboratory equipment allows performing input (raw material), inter-phasing (production) and outputting (product) control.
- IMPROVED PLASTICIZERS QUALITY
There are less possible side reactions that produce volatile and colored by products. The plasticizers color is less dependent on phthalic anhydride quality.
- IMPROVED ECOLOGY
The titanate estrefication process requires up to 90% less water in crude plasticizers “washing” step, so that the waste water which contaminate the environment.
- HIGHER YIELDS
The conversion to plasticizers is very high, over 99% and also the losses in the purification step are significantly reduced, because of the reduction of “washing” water.
- LOW ALCOHOLS EXCESS
Emission’s in line with EU regulative.
- LONG TERM EXPERIENCE
Long term experience in plasticizers production and flexibility of our organization which enables us to solve you all problems connected with plasticizers production.
Technobell can offer to the clients plants designed to produce different plasticizers: phthalates, maleates, sebacates, trimelitates and others. Once defined the production range of plasticizers during contracting the plant is specifically designed to allow easy interchangeability between production range. Also based on the required production capacity of each plasticizer different reactor and so production line sizes can be used.
PROCESS DIAGRAM FOR HEAVY PLASTICIZERS (LIKE DOP, DINP, DIDP) PRODUCTION
PLASTICIZERS PRODUCTION PROCESS DESCRIPTION
Phthalic anhydride (PA) and alcohol are reacted at about 230 °C in the presence of a catalyst. The reaction is exothermic and can be divided in two steps.
PROCESS VALUES
Process values
| PROPERTIES: | Guaranteed | Expected |
| Yield (wt%):* | min 99,5 % | 99,6 – 99,8 % |
*Yield → produced plasticizer in tons / Sum of raw materials (excluding reaction water).
RAW MATERIAL AND CHEMICALS CONSUMPTION
Raw material and chemicals consumption (in kg/ton of product)
| DBP | DOP | DINP | DPHP | DIDP | |
|---|---|---|---|---|---|
| PHTHALIC ANHYDRIDE | 542 | 383 | 365 | 345 | 350 |
| N-BUTANOL | 560 | – | – | – | – |
| 2-ETHYL-HEXANOL | – | 680 | – | – | – |
| ISO-NONYL-ALCOHOL | – | – | 710 | – | – |
| ISO-DECYL-ALCOHOL | – | – | – | 730 | – |
| 2-PRPYL-HEPTANOL | – | – | – | – | 725 |
| CATALYST | 1 | 1 | 1 | 1 | 1 |
| SODIUM CARBONATE | 4 | 2 | 4 | 4 | 4 |
| FILTER AID | 4 | 4 | 4 | 4 | 4 |
Di-Octyl-Phtalate (DOP)
- Purity (wt%) : min. 99,0
- Colour (Apha): max. 20
- Acid Number (mg KOH/g): max. 0,03
- Index of Refraction (20 DC): 1,487-1,485
- Density (kg/dm3) at 20 DC: 0,983-0,987
- Viscosity (mPas) at 20 DC: 77-83
- Distillation Range (DC, 1-95%): 230-233
- Moisture (wt%): max. 0,05
- Resistivity of Liquid (Ohm x cm): 2 x 10 e11
- Hydroxyl Number: max. 0,6
- Saponification Number: 285-290
- Flash Point (DC): 190-200
Di-2-Propyl-Heptyl-Phtalate (DPHP)
- Purity (wt%) : min. 99,0
- Colour (Apha): max. 25
- Acid Number (mg KOH/g): max. 0,07
- Density (kg/dm3) at 20 DC: 0,965-0,966
- Viscosity (cps) at 20 DC: 122
- Distillation Range (DC, 1-95%): 251-254
- Moisture (wt%): max. 0,10
- Flash Point (DC): 232
Di-Iso-Nonyl-Phtalate (DINP)
- Purity (wt%) : min. 99,0
- Colour (Apha): max. 75
- Acid Number (mg KOH/g): max. 0,06
- Index of Refraction (20 DC): 1,483-1,485
- Density (kg/dm3) at 20 DC: 0,968-0,974
- Viscosity (mPas) at 20 DC: 109-120
- Distillation Range (DC, 1-95%): 270-280
- Moisture (wt%): max. 0,08
- Resistivity of Liquid (Ohm x cm): 10 mio
- Hydroxyl Number: max. 0,8
- Saponification Number: 267-271
- Flash Point (DC): 220
Di-Iso-Decyl-Phtalate (DIDP)
- Purity (wt%) : min. 99,0
- Colour (Apha): max. 65
- Acid Number (mg KOH/g): max. 0,05
- Index of Refraction (20 DC): 1,484-1,486
- Density (kg/dm3) at 20 DC: 0,966-0,972
- Viscosity (mPas) at 20 DC: 110-130
- Distillation Range (DC, 1-95%): 280-298
- Moisture (wt%): max. 0,08
- Resistivity of Liquid (Ohm x cm): 1,6mio
- Hydroxyl Number: max. 0,8
- Saponification Number: 250-254
- Flash Point (DC): 230
Di-Butyl-Phthalate (DBP)
- Purity (wt%) : min. 99,0
- Colour (Apha): max. 30
- Acid Number (mg KOH/g): max. 0,05
- Index of Refraction (20 DC): 1,490-1,494
- Density (kg/dm3) at 20 DC: 1,040-1,048
- Viscosity (mPas) at 20 DC: 20-21
- Distillation Range (DC, 1-95%): 205-210
- Moisture (wt%): max. 0,10
- Resistivity of Liquid (Ohm x cm): 2 x 10 e11
- Hydroxyl Number: max. 0,8
- Saponification Number: 398-404
- Flash Point (DC): 175
