Results 21 to 30 of about 9,847 (179)
Synthesis and characterization of polyesters derived from glycerol and phthalic acid
Materials Research, 2007 The production of polyester via polycondensation between glycerol and phthalic acid using dibutyltin dilaurate is reported. Three glycerol:phthalic acid molar ratio used for the bulk polymerization were: 2:2; 2:3 and 2:4.
Danilo Hansen Guimarães +5 more
doaj +1 more source
Tikrit Journal of Pure Science, 2023 In this research the polymer which contains aldehyde group [H1] has been prepared by oxidation [H] using the oxidizing agent (Dess Martin Periodinane), [H1] has been dialyzed by ethanol, Schiff bases[H2,H5andH8] compounds have been prepared through the ...
Hamid Mohammed Saleh Al-Jubori
doaj +1 more source
Synthesis of 6,13-difluoropentacene
Beilstein Journal of Organic Chemistry, 2020 6,13-Difluoropentacene was synthesized from 1,4-difluorobenzene. Friedel–Crafts annulation of the latter with phthalic anhydride and subsequent reduction of the anthraquinone gave 1,4-difluoroanthracene.
Matthias W. Tripp, Ulrich Koert
doaj +1 more source
Open Chemistry, 2020 In this study, the root exudates of wetland plants, Pistia stratiotes, black algae, and Cyperus alternifolius, exposed to six phosphorus concentration gradients (0, 0.2, 1, 5, 10, and 20 mg/L) were characterized.
Duan Xu, Zhao Yang-yi, Zhang Jian-cong
doaj +1 more source
The Impact of Storage on Phthalic Acid Esters Concentrations in Yogurts Packed in Plastic Cups
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2019 Phthalic acid esters are used as plastic softeners and also can be found in food packaging materials. European legislation defines specific migration limits of plastic additives for plastic materials that come into contact with food.
Marcela Jandlová +6 more
doaj +1 more source
Synthesis and characterization heterocyclic of compounds derived fromamino pyridine substituted
Tikrit Journal of Pure Science, 2023 In this study, heterocyclic derivatives of imidazole, pyrimidine, benzodiazepine, indole and benzimidazole were synthesized. These new compounds were formed through the condensation reaction between 2-aminopyridinederivative with4-phenylphenacyl bromide,
Shaima Ibrahim Chyad Al-khazraji +1 more
doaj +1 more source
Anaerobic degradation process of phthalic acid esters
浙江大学学报. 农业与生命科学版, 2006 Ten phthalic acid esters (PAEs) were tested anaerobically to assess their potential for biogas production. Results showed that biogas production decreased with the increasing alkyl chain length of PAEs resulting in its increased half-life.
XIA Feng-yi +3 more
doaj +1 more source
Journal of Analytical Methods in Chemistry, 2021 This study aims to investigate the chemical constituents of the stem of Retama raetam growing in Saudi Arabia. The organic and inorganic composition of ethanol extract of R.
Wedad Al-Onazi +3 more
doaj +1 more source
SOME EXPERIMENTS WITH THE MONONITROORTHO-PHTHALIC ACIDS. [PDF]
Journal of the American Chemical Society, 1901 n ...
Bogert, Marston Taylor +1 more
openaire +2 more sources
Effects of cinnamic acid and phthalic acid on photosynthetic characteristics of Pugionium Gaertn.
Xibei zhiwu xuebao[Objective] In order to explore the effects of phenolic acid self-toxic substances on the growth and photosynthetic characteristics of Pugionium cornutum (L.) Gaertn.
NING Kezhen +5 more
doaj +1 more source