Ester Plasticizers for Polyvinyl Chloride - Springer
processes for producing plasticizers; and development of new environmentally friendly (“green”) low-toxic plas-ticizers derived both from petroleum chemical products and from renewable vegetable raw materials. ESTERIFICATION CATALYSTS Ester plasticizers are prepared by esteri cation of carboxylic acids or their anhydrides with alcohols in
Synthesis of novel plasticizer ester end-capped oligomeric
In this work, a novel high efficiency plasticizer, an ester-capped oligomeric lactic acid mixture (EOL), was successfully synthesized by a two-step esterification reaction, with L -lactic acid as the main raw material. The structure of EOL was characterized by using FT-IR, 1 H NMR and time of flight mass spectrometry (TOF-MS).
Method for producing ester plasticizers - Justia
1. A process for preparing ester plasticizers by reacting dicarboxylic or polycarboxylic acids or their anhydrides with alcohols in the presence of a titanium-, zirconium- or tin-containing catalyst, which comprises allowing a mixture of acid or acid anhydride and alcohol to react first at from 100 to 160° C. while removing any water formed, completing the reaction by addition of the catalyst
US6310235B1 - Method for producing ester plasticizers
A process for preparing ester plasticizers by reacting dicarboxylic or polycarboxylic acids or their anhydrides with alcohols in the presence of a titanium-, zirconium- or tin-containing...
WO1998052901A3 - Method for producing ester plasticizers
The invention relates to a method for producing ester plasticizers by reacting di- or polycarboxylic acids or their anhydrides with alcohols in the presence of a catalyst containing titanium, zirconium or tin.
- What is a safe plasticizer substitute for phthalate esters in PVC?
- Of all these options, vegetable oils (refined or used) and their derivatives, like fatty acid alkyl esters (biodiesel) and free fatty acids, are some of the most promising raw materials for producing safe plasticizer substitutes for toxic phthalate esters in PVC and other polymers [7, , , , ].
- Do epoxidized benzyl esters provide flexible PVC films?
- Epoxidized benzyl esters provided flexible PVC films with favorable properties. The objective of this study was to produce new and renewable bio-based plasticizers from used soybean cooking oil (USCO). First, USCO was completely converted into free fatty acids (FFAs) using lipase from Candida rugosa.
- Can plasticizers be incorporated into PVC?
- We performed FT–IR spectroscopy analysis, an analytical method for identifying materials through infrared absorption spectra, to demonstrate the incorporation of various plasticizers (commercial or benzyl-based esters) into the PVC structure, as shown in Fig. 4.
- What plasticizers are used in PVC?
- The most common plasticizers for PVC products are phthalic esters (or phthalates), an important class of synthetic chemicals produced from petroleum-derived phthalic anhydride and alcohols.
- Can lipase extracts be used as a catalyst for ester production?
- In this series of experiments, commercial crude lipase extracts from Candida sp. (CALA) , Thermomyces lanuginosus – Lipolase® 100 L , and ET2.0 , were tested as catalysts, given their high activity and stability in ester production, conducted in non-aqueous systems [32, 47, 48].
- Can benzyl esters be used in oleochemistry?
- Moreover, the resulting benzyl esters could yield new innovations for yet little-explored applications within the oleochemical industry, such as low-temperature plasticizers for industrial polymers like polystyrene, ethyl cellulose, synthetic rubber, and copolymers, as well as in the manufacture of water-resistant lubricating agents.
