1、Experimental and kinetic modeling study on the ignition characteristics
To reveal its chemical kinetics on ignition characteristics of esters, the existing kinetic model of MA is updated and VA model is further constructed based on the updated MA model. The new kinetic models can better reproduce ignition delay times under current experimental conditions.
2、(PDF) Vinyl Acetate Monomer Process
The following are the primary and side reactions: Figure 3 shows the salient features of the five plants and Table 1 summarizes the data for the chemical species contained in the internal sources...
3、Thermal runaway evaluation on batch polyvinyl acetate emulsion
Abstract Emulsion polymerization is the most applied method in the vinyl acetate monomer (VAM)–polyvinyl acetate (PVAc) process. However, the flammable property and unexpected bulk polymerization for the reactant and product may occur in the batch reactor or storage tank.
Mechanistic Framework and Effects of High Coverage in Vinyl Acetate
Solid catalysts often operate at high surface coverage, but fully analyzing and leveraging coverage effects remains challenging.
Competitive reaction effect of vinyl acetate on preparation and
In this report, we aim to clarify the mechanism of action of VAc, for improving the stability of a starch adhesive in avoiding agglomeration by overreaction of NMA and verify the components that provided primary shear strength and better performance to the starch-based adhesives [9].
CHEMICAL PROPERTIES OF VINYL ACETATE
Vinyl acetate has a relatively high reactivity and, in particular, is capable of undergoing a polymerization reaction when reacting with free radicals. This property makes it an important application in the production of polyvinyl acetate (PVA) and other polymers.
Solution polymerization of vinyl acetate in t
Download scientific diagram | Solution polymerization of vinyl acetate in t-butyl alcohol at 60°C. Comparison of model predictions for monomer conversion with experimental data.
Catalytic routes and mechanisms for vinyl acetate synthesis
Here, we review studies on catalyst structure and reaction mechanisms for vinyl acetate synthesis via heterogeneous non-oxidative acetylene acetoxylation and homogeneous and heterogeneous oxidative ethylene acetoxylation.
Experimental and theoretical insights into the cyclotrimerization of
In the actual vinyl acetate production process, benzene is a very harmful by-product for the quality of the product. In this work, the experimental method and DFT method are combined to study how the by-product benzene is produced during the production of vinyl acetate by acetylene gas-phase.
Methanol to Acetic Acid and Vinyl Acetates: Catalysts, Kinetics
The article provides a brief overview of the development of poly (vinyl acetate) paints as artist-grade and household products and the known differences in their formulations.
In the realm of chemical reactions, temperature is a crucial variable that not only affects reaction rates but also directly determines the properties of the products. Today, we will explore the reactions and property changes of a common organic compound—vinyl acetate—under conditions at 60°C.
Vinyl acetate, an important intermediate in organic synthesis, features a carbon-carbon double bond and two acetoxy groups in its molecular structure. This unique chemical configuration endows it with diverse applications, ranging from the production of plastics and rubber to serving as precursors for pharmaceuticals. In industrial settings, the synthesis of vinyl acetate typically involves multiple catalysts and precise condition control to ensure optimal yield of the target product.
When vinyl acetate reaches 60°C, its reactivity increases significantly. At this temperature, the carbon-carbon double bond in its molecules becomes highly active, enabling faster chemical reactions with other substances. This phenomenon, known as "temperature-sensitive reactions" in organic synthesis, illustrates how temperature fluctuations can drastically alter reaction pathways and product distributions.
A prime example is the polymerization of vinyl acetate. At 60°C, the polymerization process, which otherwise requires higher energy inputs to initiate, becomes feasible. Elevated thermal energy helps break the carbon-carbon double bonds in vinyl acetate molecules, facilitating chain-growth reactions. This temperature sensitivity allows vinyl acetate to achieve rapid polymerization in specific industrial applications, such as thermoplastic production, thereby enhancing efficiency.
temperature elevation comes with trade-offs. Excessive heat may induce side reactions, compromising product purity and quality. Thus, strict temperature control is essential during practical operations to maintain optimal conditions. For compounds with multiple reactive centers, such as vinyl acetate, temperature profoundly influences reaction behavior. Variations in temperature can trigger distinct reaction pathways, leading to increased product diversity.
Scientific research into vinyl acetate at different temperatures has revealed the complexity of its reaction mechanisms. Spectroscopic methods, for instance, have been employed to observe temperature-induced changes in intramolecular charge transfer, shedding light on electronic structural shifts underlying temperature sensitivity. These findings not only deepen our understanding of organic reactions but also provide valuable data for industrial optimization.
Beyond industrial relevance, vinyl acetate holds unique value in environmental science. As a biodegradable material, it serves as a raw material for bioplastics, reducing reliance on petroleum resources. Additionally, byproducts from its production can be converted into useful chemicals or energy through bioconversion technologies.
Examining vinyl acetate’s behavior at 60°C underscores both the thermodynamic and kinetic principles of chemical reactions and highlights technology’s pivotal role in societal progress. With ongoing advancements, it is plausible to envision more eco-friendly and efficient synthetic materials in the future, all grounded in meticulous control and deep understanding of chemical reaction dynamics.
