Results 21 to 30 of about 37,835 (161)

Über die Synthese neuer Epoxyverbindungen

open access: yesCHIMIA, 1962
Firstly, the different types of epoxy compounds are considered : • Glycidyl ethers, esters, and amines. • Epoxydation products: a) linear aliphatic epoxides, epoxidised fatty acids and fatty acid derivatives and epoxidised polybutadienes; b ...
Hans Batzer, Erwin Nikles
doaj   +1 more source

Reinforcing styrene butadiene rubber with lignin-novolac epoxy resin networks

open access: yeseXPRESS Polymer Letters, 2015
In this study, lignin-novolac epoxy resin networks were fabricated in the styrene butadiene rubber (SBR) matrix by combination of latex compounding and melt mixing. Firstly, SBR/lignin compounds were co-coagulated by SBR latex and lignin aqueous solution.
P. Yu   +6 more
doaj   +1 more source

Apolar Annonaceous Acetogenins from the Fruit Pulp of Annona muricata

open access: yesMolecules, 2009
A methylene chloride extract of the pulp of Annona muricata L. was fractionated in search for scarcely functionalized Annonaceous acetogenins (type E).
Pierre Champy   +3 more
doaj   +1 more source

Mechanically robust, hydrothermal aging resistant, imine-containing epoxy thermoset for recyclable carbon fiber reinforced composites

open access: yesMaterials & Design, 2022
Imine compounds have been proved to possess great potential in the design and preparation of sustainable epoxy thermosets. However, it is still a great challenge to develop imine-containing hardener with definite structure due to the randomness of ...
Yingying Liu   +6 more
doaj   +1 more source

Optimization of components in development of polymeric coatings for restoration of transport vehicles

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2018
It is proved, that for improving the performance characteristics of vehicle parts, including their corrosion resistance and wear resistance, it is advisable to use protective polymeric composite coatings.
А.V. Buketov   +10 more
doaj   +1 more source

Ionic Conjugated Microporous Polymers for Cycloaddition of Carbon Dioxide to Epoxides

open access: yesMacromolecular Materials and Engineering
Along the development of ionic porous organic polymers, simple and efficient synthetic methods are actively pursued. Herein, the Debus–Radziszewski reaction is applied to synthesize ionic conjugated microporous polymers (iCMPs) in one step.
Xiang Lin   +5 more
doaj   +1 more source

1H NMR Study of the In Vitro Digestion of Highly Oxidized Soybean Oil and the Effect of the Presence of Ovalbumin

open access: yesFoods, 2021
Oxidized lipids containing a wide variety of potentially toxic compounds can be ingested through diet. However, their transformations during digestion are little known, despite this knowledge being essential in understanding their impact on human health.
Ana S. Martin-Rubio   +3 more
doaj   +1 more source

Benzoquinonas, hidroquinonas e sesquiterpenos de Auxemma glazioviana Benzoquinones, hydroquinones and sesquiterpenes of Auxemma glazioviana

open access: yesQuímica Nova, 2005
Two new compounds, 5 and 8, and an epimeric mixture 4a/4b were isolated from hardwood of Auxemma glazioviana. Their structures and relative configurations were determined by modern spectroscopic analysis to be rel-10alpha,11alpha-epoxy-11beta-ethoxy ...
Jose Galberto M. Costa   +5 more
doaj   +1 more source

Bimetallic synergy in supported Ni–Pd catalyst for selective hydrogenolysis of C–O bonds in epoxy resins

open access: yesNature Communications
Recycling of epoxy composites is of importance for achieving circular economy as demand for lightweight materials in the field of sustainable technologies is soaring.
Yanze Huang   +6 more
doaj   +1 more source

Cytotoxic Dammarane-Type Triterpenoids from Aglaia cucullata Peel Fruit

open access: yesIndonesian Journal of Chemistry
Four triterpenoids, known as dammarane-type, dammaradienone (1), 20(S),25-epoxy-5α-dammar-20-en-3-one (2), 20(S)-5α-dammar-24-en-3α,20-diol-3-acetate (3) and 3α-acetyl-20S,24S-epoxy-25-hydroxydammarane (4), were isolated from Aglaia cucullata peel fruit.
Intan Hawina Anjari   +8 more
doaj   +1 more source

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