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" Quality is Hidden in its Chemistry "

Comparison Plasticisers ;

D.O.T.P ( DİOKTİL TEREFTALAT ) PLASTIC

DOTP is a terephthalate plasticizer, while DOP,DINP,DIDP are all  orthophthalates.DOTP has very different structure than known 0rthophthalate plasticizers as DOP,DINP,DIDP.This branched  structure of DOTP provides many perfect proporties to DOTP  that can not be found in other plasticizers.For comparison, these  two types of plasticizer are shown at below.Structural differences  between terephthalate  and orthophthalate plasticizer result in some perfect and unique properties of DOTP.

PLASTICIZER VOLATILITY

Plasticizer volatility is one of the most important properties for a plasticizer. A plasticizer with more volatility easily to leaves and seperates from structure of plastisols and plastic materials and this case results undesired problems both while production stage and finished product in course of time.

Also a plasticizer with more volatility migrates  from finished product rapidly. Plasticizer volatility is determined by heating samples in aluminum weighing  pans at 177 C (350 F)  for  24 hours . When  at the right side  table is  examined it is seen  that  D.O.T.P is  less  volatile than  3  different most widely used plasticiers .(DOP ,DINP ,DIDP ) and  this  means  the least loss in used plasticiers and  the  least loss in  fusion  ovens.

VOLATILITY OF PLASTICIZER DURING FUSION

Volatility of  Plastisol  (mixture of PVC and Plasticizer) during the fusion process  is  determined by percentage weight loss at various fusion temperatures
The  table  at right side expresses  that DOTP is  less  volatile than  other  plasticizer during fusion process in fusion ovens, inaddition volatility  level of  DOP is  nearly  twicer than  other  plasticizer .

VISCOSITY

Viscosity of the plastisols is very important parameter in  the production of PVC based plastics. In order to able to reach desired standarts ,viscosity of plastisol must be regulated before given to production.

Viscosity of plastisol which is  prepared  with  ordinary plasticizer as DOP begins to change fastly in the course of time,therefore viscosity of the plastisol must be measured and regulated continuously,  otherwise it  causes great production decreases and damages.

The  Viscosity  curves  of  the plastisols that prepared with plasticizers are given near side table.Measurements  have been done for 3 weeks period at 23 Centigrade.Formulas of plastisol are explained on the near side.

 

DİOKTİL TEREFTALAT


ORTOFTALAT ESTERLERİ (R= ALKOL)
Aşağıda D.O.P, D.I.O.P, D.I.N.P, D.I.D.P gibi bazı plastifiyanların kıyaslamalı uçuculukları verilmektedir.
PLASTISOL FORMULATION (AS PART)
 
1
2
3
4
P.V.C
100
100
100
100
D.O.P
60
-
-
-
D.O.T.P
-
65
-
-
D.I.N.P
-
-
68
-
D.I.D.P
-
-
-
66
HEAT STABILITY
3
3
3
3