Hydrogenation of Dioctyl Phthalate over a Rh-Supported Al
A new catalyst was developed for selective hydrogenation of dioctyl phthalate (DOP) to produce environmentally friendly plasticizer di (2-ethylhexyl) hexahydrophthalate (DEHHP) by...
Preparation method of dioctyl phthalate (DOP) - Semantic Scholar
The preparation method comprises the following steps: adding the raw materials including phthalic anhydride and superfluous isooctyl alcohol to a reaction kettle, adding concentrated sulfuric acid as a catalyst, controlling the temperature in the reaction kettle to be 0-150 DEG C, reacting for 16-20 hours, neutralizing the catalyst and unreacted
Advanced synthesis of dioctyl phthalate (DOP) and dibutyl phthalate
TnBT catalyst shows higher activity in esterification. A complete conversion of phthalic anhydride to dioctyl phthalate and dibutyl phthalate are achieved in 2 hrs in presence of TnBT.While in case of using aluminumoxide/sodium hydroxide catalyst system, it requires at least 3 hrs.
ASTM D2986 - Standard Practice for Evaluation of Air Assay
The dioctyl phthalate (DOP) smoke test is a highly sensitive and reliable technique for measuring the fine particle arresting efficiency of an air or gas cleaning system or device. It is especially useful for evaluating the efficiency of depth filters, membrane filters, and other particle-collecting devices used in air assay work.
Preparation method of dioctyl phthalate (DOP) - Google
A preparation method for dioctyl phthalate (DOP), comprises the following steps: One, esterification step 1, proportioning raw materials Phthalic anhydride isooctyl alcohol sulfuric acid...
- What is the manufacturing method of dioctyl phthalate (DOP)?
- Manufacturing method of dioctyl phthalate (DOP) Dioctyl phthalate (DOP) is a common plasticizer widely used in plastics, rubber, paints, coatings and other fields. This article will introduce the manufacturing method of DOP. I. Raw material preparation The following raw materials are needed for the manufacture of DOP: phthalic anhydride, octanol.
- How do you make dioctyl phthalate?
- DOP is manufactured by the esterification reaction between phthalic anhydride and octanol to produce dioctyl phthalate and water. III. Process Flow 1. Add phthalic anhydride and octanol into the reaction kettle according to a certain ratio, heat up to a certain temperature, and start the esterification reaction. 2.
- What is dioctyl phthalate (DOP)?
- The object of the invention is to overcome the deficiencies in the prior art, a kind of preparation method of dioctyl phthalate (DOP) is provided, to simplify technique, economize in raw materials, strengthen environmental protection, make the purity of product disposablely to reach requirement becomes possibility simultaneously.
- Can di-octyl phthalate be used as a plasticizer?
- The present study reports the synthesis of di-octyl phthalate (DOP), widely used as a plasticizer, via solvent-free esterification of phthalic acid and n-octanol over sulfated zirconia (SZr) heterogeneous acid catalyst.
- How to make phthalic anhydride octanol esterification reaction?
- Process Flow 1. Add phthalic anhydride and octanol into the reaction kettle according to a certain ratio, heat up to a certain temperature, and start the esterification reaction. 2. During the reaction, catalyst needs to be added in time to promote the reaction.
- What raw materials are needed for the manufacture of DOP?
- The following raw materials are needed for the manufacture of DOP: phthalic anhydride, octanol. II.Reaction Principle DOP is manufactured by the esterification reaction between phthalic anhydride and octanol to produce dioctyl phthalate and water. III.
