On condensation of the Schiff-base with formaldehyde and resorcinol
, the aromatic ring protons appeared in the range 6.79-7.76 ppm as a multiplet signals and the azomethine proton appeared at 8.46 ppm.
Table 1.--Phenol resorcinol
formaldehyde (PRF) adhesive formula and physical properties.
From the obtained results, an RC ratio of 2, the manner of acetone exchange after every 3 hours during the first day, and pyrolysis temperature at 800[degrees]C are also the best optimal conditions to prepare carbon xerogels for electrochemical applications, or 2S2-800 sample is the best sample found from condensation of resorcinol
and formaldehyde using glacial acetic acid as the catalyst for electrode material in electric double-layer capacitor.
PCAWDF was mainly composed of HPAM, formaldehyde, resorcinol
, and thiourea.
se deshidrata formando hidroximetilfurfural; este compuesto se combina rapidamente con el resorcinol
para formar un producto de color rojo brillante (12).
Carbon aerogels were prepared in which instead of resorcinol
the researchers used the potassium salt of 2,4-dihydroxybenzoic acid (dHBA) in the sol-gel process, producing K+-doped hydrogels.
Mamedov and co-workers studied the oxidation of resorcinol
in an alkaline medium .
The results of this robustness study (Table 4) presented the method to be robust for the analysis of resorcinol
from any formulation at a concentration as low as 1.92 [micro]g x [mL.sup.-1] (Table 2).
Available for retailers' store brand programs, the line of natural products contains no ammonia, parabens or resorcinol
. It both deposits and extracts color, adding to the original shade while lightening hair color up to two shades at a time.
Xiongchen Fu studied the bonding performance between BFRP (Basalt fiber reinforced polymer) and timber , the results shows that: the treatment of wood surface greatly enhanced the bonding performance between BFRP and wood composite materials by HMR(hydroxy methylated resorcinol
Hazardous substances found in the wastes, soils, groundwater and surface water include volatile and semi-volatile organic compounds, metals, sulfonic acids and resorcinol
, a component of adhesive systems.
The 22 endocrine-disrupting substances ChemSec added to the SIN list are: 3-benzylidene camphor, 4-meth-ylbenzylidene camphor, 4-nitrophenol, p-nitrophenol, benzophenone-l, benzophenone-2, benzophenone-3, butyl-paraben, dicyclohexyl phthalate, diethyl phthalate, dihexyl phthalate, ethylhexyl methoxycinnamate, metam natrium, methyl tertiary butyl ether (MTBE), pentachlorophenol, perchloroethylene, propylparaben, quadrosilan, resorcinol
, tert-butylhydroxyanisole (BHA), thiram, and zineb.