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About the application and function of stearyl methacrylate

About the application and function of stearyl methacrylate

4月 11th, 2024 News

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It is understood that stearyl methacrylate is a white waxy solid with a melting point of 21.4°C. It is produced by melt esterification method using methacrylic acid and stearyl alcohol as raw materials, dodecylbenzene sulfonic acid as catalyst and hydroquinone as polymerization inhibitor.

Stearyl methacrylate is widely used, specifically as follows:

1. Surface treatment agent:

A Octearyl acrylate can be used as a surface treatment agent with excellent wettability and dispersion, and is widely used in cosmetics, coatings, inks, dyes and other industries. It can improve the coating performance and color uniformity of the product, and improve the gloss and anti-pollution performance of the product.

2. Polymer materials:

Stedeyl methacrylate can be polymerized with other monomers to obtain polymer materials. These polymer materials have good heat resistance and weather resistance and are widely used in plastics, rubber, textiles and other fields. Polystearylene methacrylate can be used to prepare brush bristles with good softness and durability.

3. Oilfield additives:

Stedeyl methacrylate can be used as an oilfield additive and has excellent viscosity reducing and viscosity increasing effects. It can increase the viscosity of oil well water, reduce fluid permeability, and improve oil recovery effects. Octearyl methacrylate can also be used to adjust drilling fluids and cement slurries to improve drilling and cementing processes.

4. Others:

Octearyl methacrylate also has some applications in other fields, such as coating additives, ink diluents, chemical intermediates, etc. It has special chemical properties and physical properties in these fields and can play a unique role.

amine catalyst Dabco 8154 – BDMAEE

2-ethylhexanoic-acid-potassium-CAS-3164-85-0-Dabco-K-15.pdf (bdmaee.net)

Dabco BL-11 catalyst CAS3033-62-3 Evonik Germany – BDMAEE

Polycat 9 catalyst CAS33329-35-6 Evonik Germany.pdf – BDMAEE

Dabco NE300 catalyst CAS10861-07-1 Evonik Germany.pdf (bdmaee.net)

Dabco 1027 Catalyst CAS100515-55-5 Evonik Germany – BDMAEE

Fomrez UL-28 Catalyst Dimethyltin Dioctadecanoate Momentive – BDMAEE

Polycat 77 catalyst CAS3855-32-1 Evonik Germany.pdf (bdmaee.net)

Polycat 41 catalyst CAS10294-43-5 Evonik Germany – BDMAEE

Polycat DBU catalyst CAS6674-22-2 Evonik Germany – BDMAEE

Qingdao Energy Institute realizes the “one-pot” reductive hydroformylation reaction of olefins to directly synthesize linear alcohols

Qingdao Energy Institute realizes the “one-pot” reductive hydroformylation reaction of olefins to directly synthesize linear alcohols

4月 11th, 2024 News

As an important class of chemical products, linear alcohols play an important role in the fields of food, pharmaceutical chemicals, cosmetics, surfactants, plasticizers and lubricants. The traditional synthesis method is to undergo a hydroformylation reaction of olefins to produce aldehydes, and then undergo a reduction reaction to produce alcohols with one more carbon. One-step reductive hydroformylation of olefins is an ideal way to synthesize linear high-carbon alcohols, which simplifies the operation process and reduces energy consumption and waste emissions. However, the catalysts that have been developed focus on homogeneous precious metal catalyst systems. The reaction activity and linear alcohol selectivity are not ideal, and the separation and recycling of the catalyst are difficult.

Recently, a low-carbon catalytic conversion research group led by Yang Yong, a researcher at the Catalytic Polymerization and Engineering Research Center of the Qingdao Institute of Bioenergy and Processes, Chinese Academy of Sciences, designed and synthesized a phosphine-containing organic polymer-based triphosphate with a clear structure. The core Ru site heterogeneous catalyst developed a second-order programmed temperature control strategy and realized the “one-pot” reductive hydroformylation reaction of olefins to directly synthesize linear alcohols. This catalyst shows reactivity, chemical and regional selectivity comparable to that of homogeneous catalysts. It is suitable for C3-C12 different carbon chain olefins, cyclic olefins and aromatic olefins. It has good stability and is easy to separate and recycle. The advantage of this strategy is that the low-temperature hydroformylation reaction in the first stage can effectively reduce the occurrence of olefin isomerization and hydrogenation side reactions during the reaction process, maximize the conversion of olefins into linear aldehydes, and provide a high-efficiency and high-efficiency second stage. The selective hydrogenation reaction provides guarantee for the preparation of linear alcohols. Under optimal reaction conditions, the conversion rate of 1-hexene in the model reaction is nearly 100%, the selectivity of heptanol reaches 95%, and the ratio of linear/branched alcohols reaches 30. This result is of great significance for the development of catalysts and processes from olefins to linear higher carbon alcohols.

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Based on the phosphine-containing organic polymer-based trinuclear Ru site heterogeneous catalyst olefin “one-pot method” “Direct preparation of linear alcohols by reductive hydroformylation

As we all know, in January 2020, the country issued an upgraded version of the “Plastic Ban Order”, requiring that the production of some plastic products be banned and restricted starting in 2025. , sale and use. However, in the past two years, as public opinion about the “plastic ban” has declined, the domestic market has rebounded from traditional plastic product consumption habits, and the promotion of degradable products has weakened. In response to this phenomenon, Zheng Yueming suggested strengthening the implementation and supervision of the “plastic ban order” and prohibiting traditional plastics from entering the end consumption areas where plastic bans are prohibited. We will consolidate the territorial responsibilities of local governments and use the effectiveness of the “plastic ban” as an evaluation indicator for selecting civilized cities, hygienic cities, and tourist cities. Further improve the degradable product standard system, strengthen product quality testing certification and labeling management, and promote the healthy development of the market.

Low odor polyurethane catalysts

Low odor polyurethane catalysts

4月 11th, 2024 News
Polyurethane is a versatile material used in a wide range of applications, including foams, coatings, adhesives, and sealants. However, the production of polyurethane often involves the use of catalysts that can produce unpleasant odors, which can be a problem in certain applications. In recent years, there has been a growing interest in developing low odor polyurethane catalysts that can address this issue. In this article, we will discuss the importance of low odor polyurethane catalysts and some of the recent developments in this field.
Importance of Low Odor Polyurethane Catalysts: The odor produced by traditional polyurethane catalysts can be a significant problem in certain applications, particularly in indoor environments. For example, the use of traditional polyurethane foams in furniture and mattresses can produce an unpleasant odor that can be bothersome to some people. Similarly, the use of traditional polyurethane coatings in buildings can produce an odor that can be a problem for occupants. In addition to being unpleasant, these odors can also be a health concern for some people, particularly those with respiratory issues.
Recent Developments in Low Odor Polyurethane Catalysts: In recent years, there have been several developments in the field of low odor polyurethane catalysts. One approach is to use catalysts that are inherently low odor, such as organometallic compounds and amine catalysts with low volatility. For example, tin-based catalysts such as dibutyltin dilaurate (DBTDL) and dibutyltin diacetate (DBTDA) have been used as low odor catalysts in the production of polyurethane foams.
Another approach is to modify traditional catalysts to reduce their odor. For example, amine catalysts can be modified with odor-masking agents or encapsulated in microcapsules to reduce their odor. In addition, new catalysts can be developed using computational methods to identify compounds with low odor potential.
Applications of Low Odor Polyurethane Catalysts: Low odor polyurethane catalysts have a wide range of applications in various industries. In the furniture and mattress industry, low odor polyurethane foams can be used to produce products that are more comfortable and less bothersome to consumers. In the construction industry, low odor polyurethane coatings can be used to produce buildings that are more comfortable and healthier for occupants. In addition, low odor polyurethane adhesives and sealants can be used in a variety of applications, including automotive and aerospace.
Challenges and Future Directions: Despite the recent developments in low odor polyurethane catalysts, there are still challenges that need to be addressed. For example, some low odor catalysts may have lower activity or selectivity than traditional catalysts, which can affect the properties of the final product. In addition, the cost of low odor catalysts may be higher than traditional catalysts, which can be a barrier to their widespread adoption.
To address these challenges, future research in the field of low odor polyurethane catalysts should focus on developing new catalysts with improved activity and selectivity, as well as reducing the cost of production. In addition, there is a need for more comprehensive studies on the health effects of low odor catalysts to ensure their safety for consumers and workers.
In conclusion, low odor polyurethane catalysts are an important development in the field of polyurethane production. They have the potential to address the issue of unpleasant odors in certain applications, while also improving the comfort and health of consumers and workers. While there are still challenges to be addressed, recent developments in this field offer promising solutions for the future.
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