1、Hydrogenation of Bisphenol A
This study demonstrates the hydrogenation of a bisphenol A-type epoxy resin (BE186) through solvent selection, development of a catalyst for aromatic ring hydrogenation, and control of epoxy loss.
2、氢化双酚A型环氧树脂合成工艺研究
摘要 以氢化双酚A (HBPA)和环氧氯丙烷 (ECH)为原料,通过自制助催化剂与NaOH复配,按照醚化路线合成出氢化双酚A型环氧树脂。
3、Hydrogenation of High Molecular Weight Bisphenol A Type Epoxy Resin
The catalyst, Rh5/VulcanXC72-polyol, synthesized by the microwave assisted polyol method, yielded a 100% hydrogenation of aromatic rings with an epoxy ring opening below 20.0% at 50 °C and a H2 pressure of 1000 psi in 2.25 h.
4、氢化双酚A型环氧树脂的固化动力学
Abstract: The hydrogenated bisphenol A epoxy resin (HBPA-EP) with an epoxy value of 0.45 was prepared by the reaction of hydrogenated bisphenol A and epichlorohydrin, and was cured...
Hydrogenation of Bisphenol A
Thisstudy demonstrates the hydrogenation of a bisphenol A-typeepoxy resin (BE186) through solvent selection, development of a catalystfor aromatic ring hydrogenation, and control of epoxy loss.
Feasibility Analysis of Hydrogenated Bisphenol A Epoxy
Relevant studies have shown that hydrogenated bisphenol A epoxy resin has excellent weather resistance and is expected to replace ordinary bisphenol A epoxy resin in the encapsulation of LEDs and other electronic devices with weather resistance and ultraviolet resistance requirements.
Full Recovery of Epoxy Resin Wastes into Bisphenol A and Epoxy Monomers
Abstract Epoxy resins (EPs) are important thermosetting plastics and difficult to recycle because of their stable cross-linked structure. In this study, we report a full recovery strategy for the c...
Hydrogenation of High Molecular Weight Bisphenol A Type Epoxy Resin
A functional greener solvent mixture containing water, isopropyl alcohol (IPA) and ethyl acetate with the ratio 10:20:70 (wt%) was found to accelerate hydrogenation of bisphenol A type epoxy resin BE503 with a molecular weight of 1500 through an on-water mechanism, and led to an increased H<sub>2</sub> …
METHOD FOR PREPARING HYDROGENATED BISPHENOL A
It has been mainly reported that the yield and/or reaction rate of hydrogenated bisphenol A may be improved by using an improved metal supported catalyst or by using a specific reaction solvent.
Hydrogenation of High Molecular Weight Bisphenol A Type Epoxy Resin
Different carbon-based supports were tested and VulcanXC72 was found as the best support among the tested carbon-based ones as it possessed the highest amount of electron deficient promoter, RhOx.
In numerous modern industrial fields, epoxy resins have gained significant attention due to their excellent properties and widespread applications. Epoxy resins are high-molecular-weight compounds synthesized through the polycondensation of polyols and phenolic resins. Their structures contain a large number of epoxy groups, endowing them with superior adhesive properties, mechanical strength, and chemical stability. In the production of epoxy resins, catalysts play an indispensable role. Among these, catalysts for hydrogenated bisphenol A (HBPA) epoxy resins have attracted considerable interest due to their unique performance characteristics.
Catalysts for hydrogenated bisphenol A epoxy resins, as the name suggests, are a class of catalysts containing a bisphenol A structure. The primary advantage of these catalysts is their ability to promote the polymerization of epoxy resins at relatively low temperatures while maintaining high conversion rates and yields. Additionally, they exhibit excellent thermal and chemical stability, making them adaptable to diverse production environments and conditions.
The working mechanism of hydrogenated bisphenol A epoxy resin catalysts relies on their distinctive structural features. First, the bisphenol A structure imparts certain hydrophilic and lipophilic properties to the catalyst, enabling better dispersion and penetration into the resin system during reactions, thereby enhancing efficiency. Second, the double-bond structure in hydrogenated bisphenol A catalysts can undergo addition reactions with epoxy groups in the resin, facilitating polymerization.
In practical applications, hydrogenated bisphenol A epoxy resin catalysts demonstrate outstanding performance. For example, when used to prepare high-strength, high-toughness epoxy materials, these catalysts significantly improve the mechanical properties and weather resistance of the products. due to their high activity and selectivity, they hold critical value in the fabrication of high-performance electronic encapsulation materials and coatings.
these catalysts are not without limitations. On one hand, their high cost and complex production processes restrict their large-scale industrial application. On the other hand, prolonged use may lead to gradual degradation, resulting in reduced product quality or deactivation.
To address these drawbacks, researchers continually explore new catalyst synthesis methods and optimization strategies. For instance, introducing novel organometallic compounds as catalyst precursors can enhance activity and selectivity; adjusting catalyst composition and structure enables precise control over the epoxy resin polymerization process; and developing new catalyst support materials improves stability and lifespan.
Looking ahead, the research and application prospects of hydrogenated bisphenol A epoxy resin catalysts remain promising. With ongoing advancements in material technologies, it is expected that more efficient, eco-friendly, and cost-effective catalysts will be developed, offering greater possibilities for epoxy resin production and application. Furthermore, as environmental awareness and green manufacturing practices gain prominence, research on these catalysts will increasingly emphasize sustainability and environmental impact assessments to achieve dual economic and social benefits.
As a critical chemical raw material and intermediate, the performance optimization of hydrogenated bisphenol A epoxy resin catalysts is vital to advancing the epoxy resin industry. Future research aims to surpass current technological limitations, developing more efficient, environmentally friendly, and economical catalysts to drive innovation and progress in epoxy resin production and applications.
