Method 606: Phthalate Ester - US EPA
Several levels of purification may be required in order to reduce background phthalate levels to an acceptable level: 1) Heat four hours at 400°C in a shallow tray, 2) Heat 16 hours at 450-500°C in a shallow tray, 3) Soxhlet extract with methylene chloride for 48 hours. 6.5 Florisil—PR grade (60/100 mesh).
Synthesis of novel plasticizer ester end-capped oligomeric
Furthermore, compared with ATBC and DOTP, EOLs showed better migration resistance in the leaching test. All test results showed that the comprehensive performance of EOLs was better than those of commercial green plasticizers ATBC and DOTP, which provided a new method for the development of novel green plasticizers.
One-pot and industrial manufacturing of cardanol-based
New skeleton plasticizers derived from vanillic acid were developed via the esterification of vanillic acid with n- butyl alcohol and subsequent reaction with pentanoyl chloride or fatty acyl chloride in a solvent of dichloromethane.
Plasticizers: Types, Uses, Classification, Selection & Regulation
It is almost colorless and odorless oily liquid. It is very slightly soluble in water but soluble in alcohols, hexane etc. while miscible and compatible with all the monomeric plasticizers used in PVC compounding. Melting point: 43°C (45°F; 230 K) Boiling point: 244-252°C at 0.7 kPa.
Industrial Process Profiles for Environmental Use: Chapter 13
The major categories of synthetic plasticizers are carboxylic acid esters, phosphoric acid esters, linear polyesters and epoxidized esters. Most synthetic plasticizers are derived from some form of estenfication. Seventeen manufacturing facilities owned by 13 companies accounted for 93 percent of the 1974 plasticizers production capacity (980
- What is a general performance ester plasticizer?
- Some general performance ester plasticizers used in the marketplace today are DOA, DIDA, DIDP, DOP, DINP and other phthalates and adipates made from straight-chain alcohols of 7–11 carbons in length. Ester plasticizers are commonly used only for their as-molded, low-temperature contribution.
- How are ester plasticizers selected?
- Ester plasticizers are selected based upon cost/performance evaluation. The rubber compounder must evaluate ester plasticizers for compatibility, processability, permanence and performance properties. The study of these properties by the rubber compounder will contribute to the selection of a high-performance ester plasticizer.
- Which esters are used in plasticizers?
- In the plastics industry, about 90% of all the esters used as plasticizers, except triphenyl phosphate, are used in poly (vinyl chloride). Triphenyl phosphate is used in cellulosics and modified polyphenylene oxide (Noryl) resins with cellulosics accounting for approximately 60% of its total in 1973.
- Why do we use ester plasticizers?
- Ester plasticizers make it possible to process elastomers easily while also providing flexibility in the end-use product. Plasticizer–elastomer interaction is governed by many factors, such as solubility parameter, molecular weight and chemical structure. Ester plasticizers are selected based upon cost/performance evaluation.
- How to choose a high-performance ester plasticizer?
- The rubber compounder must evaluate ester plasticizers for compatibility, processability, permanence and performance properties. The study of these properties by the rubber compounder will contribute to the selection of a high-performance ester plasticizer. 1.
- How much impurity is in lubricant grade ester?
- Lubricant grade esters have approximately four times the impurity level as does the plasticizer grade* Based on an assumed level of 2,000 ppm, about 1,720 Ib would be present per 1 million pounds of lubri- cant grade ester. For an annual production of 50 million pounds, 86,000 Ib of impurities would be present.
