US6310235B1 - Method for producing ester plasticizers
It is easy to carry out, including continuously, and gives plasticizers of high purity. The problem-free and complete removal of the monoester formed as by-product during the reaction, the...
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.
Ester Content - an overview | ScienceDirect Topics
TYPICAL METHODS OF QUALITY CONTROL OF PLASTICIZERS. GEORGE WYPYCH, in Handbook of Plasticizers (Third Edition), 2017. 3.26 PURITY. Purity of plasticizer is determined by ester content using titration. 23 For this purpose, 2 g of plasticizer are saponified with 0.5N KOH under reflux for 1 to 4 hours (depending on ester type).
Elucidating the characteristics of a promising nitrate ester
The results demonstrated the efficiency of the performed method to produce the desired CSN with attractive characteristics such as a density of 1.701 g/cm3, nitration content of 16.55%, impact sensitivity of 15 J, heat of combustion of 10,610 J/g, detonation velocity of 7764 m/s, and specific impulse of 242 s, which are better than those of
Method for producing ester plasticizers - Justia
It is easy to carry out, including continuously, and gives plasticizers of high purity. The problem-free and complete removal of the monoester formed as by-product during the reaction, the catalyst present in the reaction mixture and the reagents used for neutralization is particularly note-worthy.
- What are ester plasticizers?
- Plasticizers include a large variety of organic liquids, such as petroleum fractions, coal tar distillates, animal fats and plant extracts, and reacted products made of those materials. Ester plasticizers, the subject of this paper, are the latter.
- Which plasticizers are used in combination with specialty monomeric esters?
- Flame-retardant plasticizers, phosphate esters and chlorinated paraffins are often combined in usage with flame-retardant plasticizers frequently used in combination with specialty monomeric esters. Both materials are inefficient plasticizers, thus explaining their combinations with specialty monomerics.
- Do fluorocarbon elastomers accept ester plasticizers?
- Fluorocarbon elastomers will accept a relatively wide range of ester plasticizers, but here, with both the high temperature post cure and application temperatures ranging to 232°C, they find use only at very low levels for processing. The selection of an ester plasticizer can often be confusing because of the large choice available.
- What are external plasticizers?
- External plasticizers are materials that interact physically with the elastomer but that do not chemically react with the polymer. Solvent and non-solvent are two distinct types of external plasticizers. Common esters and polymeric polyesters are both external and physical plasticizers.
- Can polymeric esters enhance a high-performance elastomer?
- Polymeric esters are especially suited for high-performance elastomers such as nitrile, chlorosulfonated polyethylene, high saturated nitrile, polyacrylates, acrylics and nonpost-cured fluoroelastomers. An example of how polymeric esters can enhance a high-performance elastomer is depicted in Figure 8.
- How are plasticizers selected?
- As mentioned earlier, plasticizers are selected based on their processing and end-product property contributions. Plasticizer/elastomer compatibility is the major determining factor relative to processing. End-product properties are the other major factors involved in plasticizer choice.
