WO2017204913A3 - Purified plasticizers, production and use - Google Patents
The purified aromatic esters can be produced by esterifying carboxylic acid with methyl or ethyl alcohol, separating the resulting methyl or ethyl esters from the carboxylic acid and any byproduct impurities, and then transesterifying the methyl or ethyl esters with C 4 to C 14 alcohol to produce the purified aromatic esters.
Plasticizers - Chemical Economics Handbook (CEH) | S&P Global - IHS Markit
Published May 2025. Flexible polyvinyl chloride (PVC) accounts for 80–90% of global plasticizer consumption. Flexible PVC (and thus plasticizers) is found in the following applications: construction (flooring, wall coverings), electrical (wire and cable jacketing), consumer goods (toys, footwear, etc.), packaging, transportation (inside and outside of vehicles), furnishings, and medical uses
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.
US Patent for Purified plasticizers, production and use Patent (Patent
Justia Patents Artificial Fiber Or Filament US Patent for Purified plasticizers, production and use Patent (Patent # 10,351,506) Purified plasticizers, production and use Apr 11, 2017 - ExxonMobil Chemical Patents Inc.
WO2017204913A2 - Purified plasticizers, production and use - Google Patents
The purified aromatic esters can be produced by esterifying carboxylic acid with methyl or ethyl alcohol, separating the resulting methyl or ethyl esters from the carboxylic acid and any byproduct impurities, and then transesterifying the methyl or ethyl esters with C 4 to C 14 alcohol to produce the purified aromatic esters.
- Why do plasticized PHB systems have a high crystallinity?
- This behavior is also observed in other plasticized PHB systems [24, 28, 44] and is attributed to the high crystallinity of PHB, which hinders the diffusion of the plasticizer chains in the crystalline regions and causes a concentration saturation of plasticizer in the system, reducing its mechanical properties.
- What is a low molecular weight plasticizer?
- These can be classified as low molecular weight, such as citrates, glycerol, plant oils, and esters, or oligomeric plasticizers (M n 1000–6000 g mol −1 ), such as polyethylene glycol, propylene glycol, polyisobutylene, and aliphatic polyesters [22, 23, 24, 25, 26, 27].
- Can Plasticizers improve PHB processing?
- The crystallinity index values calculated for both plasticizers increased, indicating promising candidates to improve PHB processing, with a possible reduction in melt viscosity accelerating the crystallization rate. PHB/P1 cooling curves (Figure 5 b) exhibited a non-linear relationship with the plasticizer concentration.
- Can polyhydroxybutyrate oligomers be used as plasticizers?
- Work has been conducted on several copolymers and blends extensively. In this study, the authors have proposed a novel approach: they have developed and tested two linear-structured polyester oligomers as plasticizers for polyhydroxybutyrate (PHB) to positively alter its mechanical and thermal properties.
- Does plasticizer concentration affect mechanical properties of PHB?
- The effect of the plasticizers’ concentration on the mechanical properties of PHB, i.e., elastic modulus (E), maximum tensile strength (σ), and elongation at break (ε), is shown in Figure 9. Neat PHB is a material with high rigidity due to its crystallinity ; it has a high elastic modulus and low elongation at break.
- Are aliphatic polyesters better than low-molecular-weight plasticizers?
- With a concentration of 30% in both plasticizers, there was an indication of phase separation which resulted in the deterioration of mechanical properties. Therefore, the aliphatic polyesters used provide the effective plasticization of PHB with superior thermal stability compared to low-molecular-weight plasticizers.
