1、Dimethyl Carbonate
To overcome these difficulties, scientists have explored various solvents for dissolving alkyd resins, among which dimethyl carbonate (DMC) stands out due to its unique properties.
2、碳酸二甲酯_百度百科
DMC是一种重要的有机合成中间体，DMC分子中含有羰基、甲基、甲氧基等基团，具有良好的反应性能，可代替剧毒的光气、硫酸二甲酯、氯甲烷等作为羰基化剂、甲基化剂和甲氧基化剂，在生产中具有使用安全、方便、污染少、容易运输等特点，被称为“21世纪有机合成领域的新基块”。 此外，DMC在农药、医药、香料、燃料添加剂、溶剂及电子工业等领域也有广泛用途。 1980年以前，DMC生产基本采用光气法，该法使用剧毒原料光气、副产大量腐蚀性强的盐酸，不仅污染环境，且残余氯影响产品质量，现已被淘汰 [4]。
3、Separation and Catalysis of Carboxylates: Byproduct Reduction during
Strong anion exchange resins have been used for the recovery of succinate and alkylation with dimethyl carbonate to produce dimethyl succinate. Recovery and alkylation yields above 98% have been obtained in a reaction with DMC, which was the alkylating agent as well as the solvent.
4、Dimethyl carbonate, alkyd resin, epoxy resin, acrylic resin supply
Henan Kelan Wansen Energy Technology Co., Ltd. specializes in the production and sales of dimethyl carbonate, alkyd resin, epoxy resin, and acrylic resin. Dimethyl carbonate is cheap and of high quality. New and old customers are welcome to consult.
5、Review on Solvents Based Alkyd Resins and Water Borne Alkyd Resins
Literature analysis reveals that modification of solvents based alkyd resins and water-borne alkyd resins have immensely improved their potential applications in the field of paints and...
A Review of Catalysts for Synthesis of Dimethyl Carbonate
In this review, we summarize the research status of DMC catalysts from the aspects of new catalyst design, catalyst preparation, and catalytic mechanism including the oxidative carbonylation of methanol, gaseous methyl nitrite, and the direct synthesis of CO 2 and methanol.
Biobased Alkyd Resins from Plant Oil and Furan
Herein, we propose a novel approach for the preparation of renewable alkyd resins, prepared from vegetable triglycerides, glycerol, and furan-2,5-dicarboxylic acid dimethyl ester (FDME).
Dimethyl carbonate (DMC)
Hubei Kelansen Energy Chemical Co., Ltd. is an enterprise specializing in the research and development, production, and sales of alkyd resins, acrylic resins, epoxy resins, glycerol, styrene, and solvent products.
Highly efficient synthesis of dimethyl carbonate over copper catalysts
An effective approach to improve catalytic performance of a Cu-based catalyst for the synthesis of dimethyl carbonate (DMC) is to minimize particle size and to increase the dispersion of active Cu species.
Dimethyl carbonate anhydrous, = 99 616
Dimethyl carbonate (DMC) is a versatile, non-toxic, biodegradable reagent with tunable chemical reactivity. It serves as a green alternative to dimethyl sulfate or methyl halides and phosgene for methylation and carboxylation reactions.
In modern coatings industry, alkyd resins are widely used in various coating products due to their excellent properties. traditional alkyd resins pose certain challenges in processing and application due to their inherent physical and chemical characteristics, such as high viscosity and low solubility. To overcome these difficulties, scientists have explored various solvents for dissolving alkyd resins, among which dimethyl carbonate (DMC) stands out due to its unique properties. This article delves into the application and significance of DMC as a solvent in the dissolution of alkyd resins.
DMC is a colorless, odorless, and non-toxic organic compound with excellent solvent capabilities, capable of forming homogeneous solutions with multiple polymers. Compared to traditional organic solvents, DMC has a higher boiling point and lower volatility, meaning it is less likely to evaporate at high temperatures, thereby reducing environmental impacts from volatile organic compounds (VOCs). Additionally, DMC exhibits good thermal stability, maintaining performance over a wide temperature range, making it an ideal choice for synthesizing high-performance coatings.
In practical applications, the process of dissolving alkyd resins in DMC involves complex chemical reactions. Initially, alkyd resin and DMC are mixed in a specific ratio and heated to ensure thorough contact and reaction. During this process, DMC gradually penetrates the internal structure of the alkyd resin, undergoing chemical interactions to form a stable homogeneous solution. This not only improves the solubility and fluidity of the alkyd resin but also enhances coating properties such as adhesion, hardness, and gloss.
Beyond performance improvements, DMC-dissolved alkyd resins offer environmental advantages. The low volatility of DMC reduces the usage of organic solvents, thereby lowering VOC emissions and benefiting environmental protection. as a renewable resource, DMC’s production process is relatively eco-friendly, aligning with sustainable development requirements.
Significant achievements have been made in applying DMC-dissolved alkyd resin technology. For example, in automotive coatings, DMC-based alkyd resin coatings demonstrate excellent wear resistance, weather resistance, and vibrant color, meeting the high-performance demands of automotive finishing. In furniture coatings, these coatings also exhibit superior properties, such as strong adhesion and gloss, enhancing the durability and aesthetics of furniture surfaces.
Despite notable progress, challenges and limitations remain. First, the relatively high cost of DMC may hinder its widespread adoption in the coatings industry. Second, while DMC’s solubility is exceptional, it may still struggle to fully replace traditional solvents in specialized applications, necessitating further research. Lastly, as environmental regulations tighten, minimizing DMC usage while maintaining coating performance becomes a critical focus for future studies.
the development of DMC-dissolved alkyd resin technology holds immense significance for the coatings industry. It not only improves the solubility and fluidity of alkyd resins but also enables high-performance coating products. With ongoing technological advancements and stricter environmental standards, DMC-dissolved alkyd resin is poised to become a mainstream choice in the coatings sector.
