Green chemistry of polyurethanes: Synthesis, structure, and functionality of triglycerides of soybean oil with epoxy and cyclocarbonate groups—renewable raw materials for new urethanes

2015 ◽  
Vol 57 (6) ◽  
pp. 584-592 ◽  
Author(s):  
M. A. Levina ◽  
D. G. Miloslavskii ◽  
M. L. Pridatchenko ◽  
A. V. Gorshkov ◽  
V. T. Shashkova ◽  
...  
2020 ◽  
Vol 22 (18) ◽  
pp. 6047-6054
Author(s):  
Nicholas R. Babij ◽  
Nakyen Choy ◽  
Megan A. Cismesia ◽  
David J. Couling ◽  
Nicole M. Hough ◽  
...  

The holistic application of Green Chemistry principles in the design and synthesis of the new broad-spectrum fungicide, florylpicoxamid, is described.


2019 ◽  
Vol 15 (7) ◽  
pp. 745-758 ◽  
Author(s):  
Aslı Erdem Yayayürük ◽  
Onur Yayayürük

Background: Green chemistry is the application of methodologies and techniques to reduce the use of hazardous substances, minimize waste generation and apply benign and cheap applications. Methods: In this article, the following issues were considered: greener solvents and reagents, miniaturization of analytical instrumentation, reagent-free methodologies, greening with automation, greener sample preparation methods, and greener detection systems. Moreover, the tables along with the investigated topics including environmental analysis were included. The future aspects and the challenges in green analytical chemistry were also discussed. Results: The prevention of waste generation, atomic economy, use of less hazardous materials for chemical synthesis and design, use of safer solvents, auxiliaries and renewable raw materials, reduction of unnecessary derivatization, design degradation products, prevention of accidents and development of real-time analytical methods are important for the development of greener methodologies. Conclusion: Efforts should also be given for the evaluation of novel solid phases, new solvents, and sustainable reagents to reduce the risks associated with the environment. Moreover, greener methodologies enable energy efficient, safe and faster that reduce the use of reagents, solvents and preservatives which are hazardous to both environment and human health.


2011 ◽  
Vol 396-398 ◽  
pp. 833-836 ◽  
Author(s):  
Xi Pu He ◽  
Xia Deng ◽  
Seng Sheng Wang ◽  
Jun Xiong ◽  
Yu Xiang Gu

The plant oil-based epoxy materials are considered as environment-friendly, biodegradable, renewable raw materials, potentially replacing petrochemical-based epoxy materials in many fields. Soybean oil methyl esters (SOME) were epoxidized with Prileshajev and Chemo-enzymatic reactions. The highest epoxy oxirane achieved by Prileshajev epoxidation was only 4.42%, however, it could reach 5.63% by chemo-enzymatic epoxidation. The stability of oxirane by chemo-enzymatic epoxidation was better than that by Prileshajev epoxidation. The results showed that the chemo-enzymatic method was extremely efficient in the synthesis of epoxides from unsaturated methyl esters.


2020 ◽  
pp. 48-55
Author(s):  
M.E. Sharanda ◽  
◽  
E.A. Bondarenko ◽  

Ethylene glycol and propylene glycol are important representatives of polyols. On an industrial scale, they are obtained from petrochemical raw materials. Within a decade, significant efforts were made for the producing of polyols from biologically renewable raw materials - carbohydrates. The general trend for carbohydrate hydrogenolysis includes application of liquid-phase process with the use of modified metal-oxide catalysts, at 120-120 ° C and pressure of 3MPa or above. So high pressure is used for the reason to increase hydrogen solubility, and also due to the high partial pressure of low boiling solvents. We supposed that usage of high boiling solvents could allow hydrogenolysis to be performed at the lower pressure. Ethylene glycol and propylene glycol are of particular interest as such kind of solvent since they are both the main products of glucose hydrogenolysis. In this work, the process of hydrogenolysis of glucose and fructose over Cu / MgO-ZrO2 catalyst have been studied at temperature range of 160-200 °C and a pressure of 0.1-0.3 MPa in a flow reactor. The solvents were simultaneously the target products of the reaction - ethylene glycol and / or propylene glycol. Gas chromatography and 13C NMR were used for the reaction products identification. It was found that the solubility of glucose in propylene glycol is 21 % by weight, and in ethylene glycol 62% by weight. It was pointed out that the process of hydrogenolysis can take place at a pressure close to atmospheric. Under these conditions, the conversion of hexoses reaches 96-100 %. The reaction products are preferably propylene glycol and ethylene glycol. The total selectivity for C3-2 polyols is 90-94 %, that is higher than in the hydrogenolysis of glucose in aqueous solution.


2020 ◽  
Vol 164 ◽  
pp. 08031
Author(s):  
Evgeniy Velichko ◽  
Edward Tshovrebov ◽  
Ural Niyazgulov

The article deals with issues of monitoring, planning, organizational and technical support, economic regulation and improving the efficiency of the infrastructure for processing, recycling and disposal of waste, resource conservation and management of secondary resources, their use as secondary raw materials for production, services, work and power generation. The Russian Federation has significant potential for economic growth due to the efficient use of secondary resources from billions of tons of generated production and consumption waste annually. These ecologically unsafe anthropogenic objects can be characterized as a source of valuable renewable raw materials, material and fuel and energy resources. However, the scale and level of use of various types of secondary resources are characterized by considerable unevenness and depend on the demand for secondary raw materials, the resource value of the waste, the environmental situation arising from treating them as environmental polluters, on the real economic conditions that determine the profitability of each specific type. economic activities that use secondary resources for the manufacture of products, works, services, energy production. The methods of monitoring the industry for the treatment, disposal and disposal of waste are: information-analytical, information-statistical, sociological, geo-information. The legal status of the monitoring system of the industry for the treatment, disposal and disposal of waste is determined by the limitations of its functionality within the framework of the goals and objectives facing it.


2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Darfizzi Derawi ◽  
Bashar Mudhaffar Abdullah ◽  
Hasniza Zaman Huri ◽  
Rahimi M. Yusop ◽  
Jumat Salimon ◽  
...  

Palm olein (POo) is widely produced as edible oil in tropical countries. POois considered as renewable raw material for the new industrial and pharmaceutical products synthesis based on its characterization. Palm olein was good on its viscosity index, oxidative stability, and flash and fire point. POocontained unsaturated triacylglycerols (TAGs): POO (33.3%); POP (29.6%) which plays an important role in chemical modification process to produce new industrial products. The double bond was detected on1H-NMR (5.3 ppm) and13C-NMR (130 ppm) spectra. The chemical compositions of POowere tested by using high performance liquid chromatography (HPLC) and gas chromatography (GC) techniques. This unsaturated oil is potentially to be used as renewable raw materials in chemical modification process to synthesise polyols, polyurethane, and biolubricant for industrial and pharmaceutical products application.


2014 ◽  
Vol 223 ◽  
pp. 148-156 ◽  
Author(s):  
Sylwia Dworakowska ◽  
Dariusz Bogdał ◽  
Federica Zaccheria ◽  
Nicoletta Ravasio

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