WO2014185872A1 - Dotp (di-octly terephthalate)production
The invention is DOTP (Di octly terephthalate) production method at normal atmospheric pressure without using any inert gas by separating the water formed in the reaction by means of column in...
CN107033003A - A kind of preparation method of DOTP - Google
The present invention relates to a kind of preparation method of DOTP, specially following steps：(1) terephthaldehyde's low-kappa number；(2) octanol is pre-processed；(3) catalytic reaction；(4) finished product is purified to obtain.By experiment, a kind of preparation method for DOTP that the present invention is provided, substantially reduce the time that TPA esterification process
Esterification vs. transesterification – comparison of DEHT
Two primary methods for the production of di-esters used as plasticizers are the following: esterification (employed by Grupa Azoty ZAK S.A. for production of Oxoviflex (DEHT, DOTP) ) and transesterification (employed by some other manufacturers). The composition and properties of plasticizers may dier based on the production technology.
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER World
A method o f producing DOTP (Di-Octyl Terephthalate) according to one o f the preceding claims, characterizedinthat the reactor (10) has a structure having a simple stirreranda heater whichiscontrolledbya temperature control element.
Patent - Cey Kimya
DOTP (Di octly terephthalate), can be obtained from the reaction of di methyl terephthalate, and 2-ethyl hexanol with a titanium catalyst. However, the reaction proceeds very slowly and there are foaming problems. In other known DOTP (Di octly terephthalate) production methods, DOTP (Di octly terephthalate) is produced by reacting terephthalic
