Results 71 to 80 of about 1,482,034 (300)
Angewandte Chemie International Edition, Accepted Article.This study presents a phosgene‐ and isocyanate‐free route for the synthesis of polyurethanes using (R)‐limonene as a bio‐based starting material. The synthesis of the cyclic limonene‐based carbamate monomer LU is achieved in high yields using dimethyl carbonate as a sustainable, less hazardous phosgene surrogate and is verified by NMR, SC‐XRD, ESI‐MS ...
Jonas Futter +4 more
wiley +1 more source
Electronic Trap States in Methanofullerenes [PDF]
Advanced Energy Materials, 1, 655, (2011), 2011 The trap states in three fullerene derivatives, namely PC61BM ([6,6]-phenyl C61 butyric acid methyl ester), bisPC61BM (bis[6,6]-phenyl C61 butyric acid methyl ester) and PC71BM ([6,6]-phenyl C71 butyric acid methyl ester), are investigated by thermally stimulated current measurements (TSC). Thereby, the lower limit of the trap densities for all studied
arxiv +1 more source
Applied Sciences, 2019 Bisphenol A dicyanate (BADCy) resin nanoparticles were synthesized by precipitation polymerization and used to modulate the microstructure of the BADCy resin matrix. A microscopic mechanism model was used to characterize the curing process of BADCy resin
Hongtao Cao +4 more
doaj +1 more source
Sequence Control in Sulfur‐Containing Ring‐Opening Co‐ and Terpolymerisations
Angewandte Chemie International Edition, Accepted Article.Sulfur‐containing polymers uniquely expand the catalogue of accessible material properties compared to current commodity materials, yet their synthesis remains underdeveloped. Combining sulfur‐ and oxygen‐containing monomers in ring‐opening copolymerisation leads to a reshuffling reaction of the sulfur centres, which has been challenging to control — a
Bhargav R. Manjunatha +5 more
wiley +1 more source
Modification of cyanate resin by conjugated tri-component interpenetrating polymer networks
Journal of Materials Research and Technology, 2017 Cyanate ester (CE) resin was modified in a multi-component way using the technology of conjugated tri-component interpenetrating polymer networks (CTC-IPN).
Wang Chuang +5 more
doaj +1 more source
e-Polymers, 2023 Epoxy resin (EP)/cyanate ester (CE) copolymer, an important structural material with high temperature resistance and low dielectric constant in aerospace, microelectronics, and related fields, is still of great flammability danger.
Cao Zhilin, Ren Changxin, Wang Zhengzhou
doaj +1 more source
Remote functionalization by tandem radical chain reactions [PDF]
, 1997 Normal radical relay chlorination of cholestan-3α-ol directed by an attached m-iodobenzoate ester group affords a 9α-chloro steroid, but when the same reaction is conducted in the presence of an excess of CBr4 the product is a 9α-bromo steroid ...
Wiedenfeld, David
core +1 more source
Polymer Composites, EarlyView.The illustration depicts the improvement in the mechanical and ablative properties of polybenzoxazine composites according to their alumina particle content. ABSTRACT The aerospace industry is seeking a replacement of toxic phenolics to use in ablative materials. One of the most promising candidates is polybenzoxazine materials because of their extreme
İ. Egemen Küçük +2 more
wiley +1 more source
Разработка и регистрация лекарственных средств, 2019 Method of determination of potassium cyanate in carbamylated darbepoietin alpha drug substance was developed. The method is based on derivatization of cyanate by methyl ester of anthranilic acid followed by formation bicyclic derivative (1-H,3-H ...
A. D. Askretkov +2 more
doaj
Nanomaterials, 2018 Epoxy/cyanate resin matrix composites (AG80/CE) with improved thermal conductivity and mechanical properties were obtained with synergetic enhancement with functional carbon nanotubes (f-CNTs) and hexagonal boron nitride (h-BN).
Mingzhen Xu +5 more
doaj +1 more source