Technical Alerts - January 2021

Technical News,

High-performancegum rosin-modified hyperbranched vinyl ester resin derived from multifunctional pentaerythritol

S Jaswal, T Thakur, B Gaur, AS Singha - Polymer Bulletin

In this article, gum rosin-based hyperbranched vinyl ester resin (VPEMPAE) was 
synthesized from maleic anhydride-modified gum rosin adduct (MPA). This adduct 
(MPA) was reacted with pentaerythritol to obtain esterified adduct (PEMPA). The …

 

Crude WoodRosinand Its Derivatives as Hydrophobic Surface Treatment Additives for Paper and Packaging

A Bildik Dal, M Hubbe, L Pal, M Güle - 2020

The aim of this work is to obtain better water resistance properties with additives to 
starch at the size press. A further goal is to replace petroleum-based additives with 
environmentally friendly hydrophobic agents obtained by derivatization of wood …

 

Microemulsified Systems and Their Environmental Advantages for the Oil Industry

FDS Curbelo, AIC Garnica, JM Rodriguez-Díaz… - Advances in the Domain of …, 2021

… 3.12 Lubricity tester (Ofite). Figure 3.13 shows a water-based microemulsified
drilling fluid. The microemulsified system consisted of the surfactant Tween
80 (S), pine oil (OP), and glycerin and water (AP) in the mass ratio 1:1. Open …

 

[PDF]Considerations and Truths for Proper Vitamin D Supplementation

LK Batur, A Ozaydin - Doç. Dr. Mehmet Dalkılıç

… In the presence of sunlight (UV-B), at the 282- 320 nm wavelengths, the
sterol B ring breaks the bonds between 9th and 10th carbons, and as a result
of the opening of the ring, previtamin D3 (secosterol ring) transforms into …

 

Trans‐limonene dioxide, a promising bio‐based epoxy monomer

L Schutz, F Kazemi, E Mackenzie, JY Bergeron… - Journal of Polymer Science

Abstract Vast quantities of the natural terpene (R)‐limonene can be collected
from food waste … Copy URL. Share a link. Share on: Email; Facebook; Twitter;
Linked In; Reddit; Wechat. Abstract. Vast quantities of the natural terpene …

 

Purification of Commercially Available β‐sitosterolVia Chemical Synthesis

A Zmysłowski, J Sitkowski, K Michalska, A Szterk - European Journal of Lipid Science and …

β‐Sitosterol, a plant sterol, has been found to be useful in the nutraceutical and 
pharmaceutical industries but is also frequently employed in biological research. In 
addition to stigmasterol, phytosterols are available as mixtures, and it is challenging …

 

Comparison of epoxidation methods for bio‐based oils: Dioxirane intermediates generated from oxone vs. peracid derived from hydrogen peroxide

R Setien, S Ghasemi, G Pourhashem, DC Webster - Polymer International

Page 1. Pourhashem Ghasideh (Orcid ID: 0000-0002-5979-8534) Webster Dean (Orcid
ID: 0000-0002-5765-9514) Comparison of epoxidation methods for bio-based oils:
Dioxirane intermediates generated from oxone vs. peracid derived from hydrogen peroxide …

 

Efficient and selective microwave Oppenauer oxidation ofsterolderivatives

S Négrel, JM Brunel - Tetrahedron, 2021

An improved, fast, and accurate procedure for regioselective microwave Oppenauer 
oxidation of sterol derivatives is reported leading to the expected corresponding 
ketosterols in moderate to excellent isolated yields ranging from 58 to 81%. The …

 

 

Materials Based on Technical Bulk Lignin

S Zhao, MM Abu-Omar - ACS Sustainable Chemistry & Engineering, 2021

Lignin is the second most abundant biopolymer and the main source of
aromatic structures on earth. Lignin has long been produced as a byproduct
of the pulping process and utilized in low value-adde...

 

The Exploration of Dominant Factors for the Hydrogenation of α-Pinene Over Ni–P/APO-11

P Huang, D Pan, Q Lai, L Jiang, Y Zheng, Y Wang… - Catalysis Letters, 2021

… In the past years, natural product, as an important raw material, attracted
special attention for using in the production of higher value-added chemicals
[1, 2]. α-Pinene, a terpene extracted from turpentine, was a cheap and …