نتایج جستجو برای: isocyanate
تعداد نتایج: 1172 فیلتر نتایج به سال:
The primary amide side-chain of acrylamide copolymers has been utilised as an isocyanate surrogate. is formed under mild conditions via electrochemical Hofmann rearrangement resulting in the formation...
The interstellar detections of isocyanic acid, methyl isocyanate, and very recently also ethyl open the question possible detection vinyl isocyanate in medium. aim this study is to extend laboratory rotational spectrum into millimeter wave region undertake a check for its presence high-mass star forming Sgr B2. was recorded frequency regions 127.5-218 285-330 GHz using Prague spectrometer. spec...
A liquid polyisocyanurate (PIR) containing isocyanate prepolymer was synthesized via co-cyclotrimerization of mono- and di-isocyanates used for preparation flexible elastomers with good thermal stability tunable mechanical properties.
Polyurea microcapsules containing 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide as the active agent were prepared by the method of interfacial polycondensation with methylene bis(phenyl isocyanate) as the multifunctional isocyanate, hexamethylene diamine as the diamine, and anionic sodium lignin sulphonate as the emulsifying agent . Thermal stability of the microcapsules was investi...
The photochemistry and molecular structure of 1-phenyl-4-allyl-tetrazolone (PAT) was studied by FT-IR matrix isolation spectroscopy and DFT(B3LYP)/6-311++G(d,p) calculations. The spectrum of matrix-isolated PAT monomers agrees well with the sum spectrum of three conformers predicted theoretically. UV irradiation (lambda > 235 nm) of matrix-isolated PAT induces three types of photofragmentation:...
The mechanism of aromatic imide formation from reaction between isocyanate and anhydride using secondary amine as a pre-catalyst is driven by deprotonated urea, which obtained the with help bases.
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