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Special Report

S. Singh et al have referred to the unique process and have better impact and fl exural antioxidants and antiaging substances. DMCC Speciality Chemicals Limited
physico-chemical properties of CO. Pro- resistance than the unmodifi ed version. (ACS Omega, 2023; DOI: 10.1021/acs-
ducts based on CO are used for a variety CS addition was at 15 wt%. (ACS Omega, omega.2C07657). ( F o rm e rl y k n o w n a s Th e Dh ar ams i Mor a r ji C h e m ic a l C o. L t d . )
of products from lubricants to laxatives, 2023; DOI: 10.1021/acsomega.2C06947). Production of neoacid from bio-
ski boots, etc. Gamma decalactone is
another product. This review covers Formulation of neem leaf and mass-derived monomers
many aspects connected with CO. (Env. croton seed essential oils as a E. Andini et al have used biomass-derived
Progress & Sustainable Energy, 43, Issue natural insecticide tested on furan and keto acids via C-C coupling
2, e14008; DOI: 10.1002/ep.14008). mosquitoes and cockroaches through hydroxylalkylation/alkylation,
[Neem seed oil is widely used for pesti- followed by ring-opening of furans
Investigations on membrane cidal applications.] through hydrodeoxygenation. Co-catalyst
performance for coconut was Pd supported on carbon and metal tri-
water (CW) concentration under Y.A. Endris and K. Mekonnen have re- fl ate. (Green Chem., 2023; DOI: 10.1039/
pressure and osmotically driven ferred to the use of title materials as insec- D3GC00735A).
process ticides in place of the synthetic materials.
These authors have worked on neem leaf Lignin (L)-based low-density
Z-S. Lien et al have referred to the and cotton seed and extracted oils were rigid polyurethane/polyisocya-
popularity of this ready-to-drink health subjected to bioinsecticide formulation nate foams
beverage. Export will become viable if in individual as well as mixed forms. The
concentrated and subjected to pasteuri- maximum yields of essential oils from C. Henry and M. Nejad have used unmodi-
sation/sterilisation-process. RO at 25 neem leaf and croton seed were 30.54% fi ed Kraft softwood L to fully replace the
bar could signifi cantly concentrate the and 14.75%, respectively. Blended mate- petroleum-based polyol for the fi rst time
CW, by reducing to half its volume. rial is more effi cient. Terpineol, α-terpinyl in low-density rigid polyurethane/poly-
RO appears to be a viable process. (J. acetate, eucalyptol, and delta-cadinene are isocyanurate (PUR/PIR) foam. The effect
Chem. Technol. Biotechnol., 2023; DOI: the active constitutes of the neem leaf oil; of various proportions of L – at 25, 50,
10.1002/jctb.7391). active components of croton seed oil are 75 and 100% -- on foam properties were
epiglobulol, copanene, delta-cardinene, investigated with respect to all important OVER 10 DECADES OF MANUFACTURING EXPERTISE IN SULFUR,
Biobased epoxy composites α-cubenene, and β-guaiene. (ACS Omega, properties. Even 100% replacement gave EXPERIENCE IN SAFE LOCATIONS : ETHANOL AND BORON
reinforced with acetylated corn 2023; DOI: 10.1021/acsomega.2C08026). good performance and demonstrated HANDLING OF HAZARDOUS • ROHA IN MAHARASHTRA CHEMISTRIES
straw (CS) outstanding fi re resistance performance. CHEMICALS • DAHEJ IN GUJARAT
Novel insight into Pickering (Ind. Eng. Chem. Res., 2023; DOI:
S. Jiang et al have reported CS-epoxy emulsion and colloidal particle 10.1021/acs.iecr.2C03728).
resin composites and maleic anhydride network construction of basil 2 generation PLA: Lactide
nd
acetylated CS/ECs (MA-CS/ECs), pre- extract (BE) for enhancing formation directly from aqueous
pared through dry mixing and high-tem- antioxidant and UV-B-induced lactic acid (LA)
perature curing. CS is available in ample antiaging activities
quantities and is eco-friendly and low cost M. Venschutt et al have come out with
biomass material. The composites were R.S. Rosdianto et al have developed a the strategy of directly making PLA from
prepared using a casting and moulding facile preparation method of oil-in-water aqueous LA (90%), instead of the com- DSIR ACCREDITED R&D ENGINEERING SERVICES : DESIGN AND ENGINEERING SERVICES
(o/w) Pickering emulsion mercial two-step process. Heterogeneous SINCE 1973 FOR SULPHURIC ACID PLANTS AND ALLIED PRODUCTS
in an emollient formula- Lewis acid catalysts show highest selec-
tion using BE (ocimum tivities for the direct synthesis. Further,
americanum L.) as a solid high amounts of linear dimeric lactoyll-
particle stabiliser. BE con- actic acid (L A) and higher oligomers in RECOGNITIONS THAT INSPIRE US TO DELIVER MORE:
2
tains phenolic substances – the starting material, accelerate the pro-
salvigenin, eupatorin, cess. Experiments were done in an ordi-
rosmarinic acid, and nary continuous fl ow reactor (fi xed bed).
lariciresinol. Urea is used Various zeolites and gamma alumina
in emulsion along with catalysts were studied. (Catalysis Com-
humectants and Tween munications, 2023, 177, April 106636;
20. These were tested for DOI:10.1016/j.catcom.2023.106636). 317/21, Prospect Chambers, Dr. D.N. Road, Fort, Mumbai - 400 001, Maharashtra, India.
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184 Chemical Weekly October 10, 2023 Chemical Weekly October 10, 2023 185

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