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Showing 1 to 20 of 54 for “"Resorcinol"”.
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Novel Resorcinol Platforms with Pharmaceutical Applications
… a novel class of halogenated compounds based on resorcinol dimers which showed a relatively high antimicrobial activity. In this work, the structures were modified further in order to develop a structure-activity relationship for these systems. A novel synthetic approach to brominated resorcinol …
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Resorcinol-formaldehyde/titania (RFTi) gel composites for wastewater treatment
… from a sol-gel process via polycondensation of resorcinol-formaldehyde (RF), yielding unique properties that are ideal for use as an adsorbent for water treatment. TiO2 was successfully incorporated into the RF matrix during the polycondensation reaction of RF, to produce a chemically …
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Xerogeles Resorcinol-Formaldehído: porosidad y química superficial a medida
La principal ventaja que presentan los xerogeles orgánicos y de carbono reside en que su porosidad puede ser diseñada a medida para la aplicación en la que se quieran utilizar estos materiales. A pesar de las ventajas que ambos materiales presentan, la mayoría de las aplicaciones se centran en el …
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Development of nitrogen doped resorcinol-formaldehyde gels for carbon capture
Resorcinol-Formaldehyde (RF) xerogels are organic materials that have been widely studied due to their industrially relevant characteristics, such as high surface areas, suitable pore size and pore volume on which target species can be adsorbed; additionally, RF gels have significant potential to …
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The Effect of Endodontic Solutions on Resorcinol-Formalin Paste in Teeth
… solutions would have a softening effect on resorcinol-formalin paste in extracted teeth, and if there were any differences in the solvent action between these solutions. Forty-nine single-rooted extracted teeth were decoronated two mm coronal to the CEJ, and the roots sectioned apically to a …
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Electronic transport and photoconductive properties of resorcinol-formaldehyde-based carbon aerogels
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1995.
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Resorcinol 15% tópico: formulación, eficacia y seguridad en la hidradenitis supurativa leve moderada
… objetivo principal es establecer una fórmula de resorcinol tópico al 15% y determinar su estabilidad a largo plazo. Como segundo objetivo principal, constituir un estudio de cohortes, prospectivo para evaluar la eficacia y seguridad del resorcinol tópico al 15% cada 12 horas durante 16 semanas en …
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Replacement of homogeneous acids in the conversion of meta-phenylenediamine to resorcinol by Heterogeneous Analogues
Resorcinol is an important building block in the pharmaceutical, adhesion and dye industry. A number of different processes for the production of resorcinol are available with each synthesis route having intrinsic advantages and disadvantages that differ from one process to another. A viable route …
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A study of the mannich reaction with certain phenols, of the causes of formation of coloured products and the prevention of their occurence
… p-iso-propylphenol, 3,1,5-trimetbylphenol, resorcinol, 3-pentadecylphenol and the component phenols of cashew nut shell liquid (CNSL) have been prepared. Mannich bases have also been prepared from methylamine, formaldehyde with phenol and with m-cresol, from diethylenetriamine, formaldehyde …
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Cyclization modes in type III polyketide synthases and the synthetic compounds used as probes for mechanistic studies.
… ring structures. The mechanisms of pyrone and resorcinol ring formation in type III PKSs remain unknown, despite many years of research on this family of enzymes. Compounds, thought to be intermediates in these enzyme reactions, have been synthesized and used to probe the enzyme mechanisms. To …
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The evaluation of an organophosphate thermosetting resin for use in a high temperature resistant composite and a study of chemistry of ionomer cements
… Transesterification of tri-phenyl phosphate with resorcinol has given a resorcinol phosphate resin, which cured with hexamethylenetetramine. A pilot scale batch of this resin has been made and used in high temperature stability studies. Post-cured resorcinol phosphate resin-chrysotile asbestos …
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Freeze-Casting For Facile Synthesis Of Novel Porous Materials
… impact of carbon precursor (glucose, sucrose, resorcinol, and resorcinol formaldehyde), SiO2 template, and freeze-casting conditions on the morphology and structural order was examined. Interestingly, the dispersion composition impacted the porosity generated by both the ice template and SiO2 …
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Bambu laminado colado (Dendrocalamus giganteus) aplicado à treliça plana tipo Howe e à viga retangular
… avaliados dois tipos de adesivos: um à base de resorcinolformaldeído (CASCOPHEN) e outro à base de poliacetato de vinila (CASCOREZ). Foram realizados ensaios de caracterização físico-mecânica do BLC (bambu laminado colado). Posteriormente, foram ensaiadas 4 (quatro) treliças de BLC com vão livre …
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A New Method for the Analysis of Carbohydrates by Means of Vanillin in Acid Medium
… ketose from aldose sugars. He found that resorcinol and hydrochloric acid yield a red color with ketoses and a yellow color with aldoses. Pinoff (4) in 1905 developed a color test with alpha-napthoi that differentiated sugars containing ketone group from aldose sugars.
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The synthesis and properties of some chelating ion exchangers.
… salicylic acid, alizarin or pyridyl azo resorcinol as the functional group have also been examined to determine their behaviour with the same six metals. An attempt to determine the magnitude of the stability constants for the metal-resin complexes, uranyl and copper-poly styrene …
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Temperature and Water Responsive Shape Memory Polymers for Soft Tissue Expansion
… methylene diphenyl diisocyanate and resorcinol. Upon subsequent testing, it was observed that these polymers showed temperature and water responsive shape memory properties i.e., these could be programmed to recover back to their original shape when brought in contact with external …
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The synthesis, reactivity and application of functionalized alkyl transition metal complexes
… , magnesium metal, phenol derivatives ( phenol, resorcinol, 4-hydroxybenzyl alcohol and 3,5- dihydroxybenzyl alcohol), trityl salt, PPh3, and CO/AgBF4 has also been studied. The new complexes that we obtained are namely: [CpFe(CO)(L){C=O(CH2) 0Br}] ( L = CO and PPh3 ) from the reactions with …
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Electrochemical and photoelectrochemical oxidation of selected organic compounds on TiO2 electrodes and the effect of adsorption on the oxidation potentials
… glass electrodes. The oxidation potentials of Resorcinol (RSRCL), 4-Chlororesorcinol (4-CR), 4,6-Dichlororesorcinol (4,6-DCR), Catechol (CC), 3,4-Dihydroxybenzoic acid (3,4-DHBA), and 1,2,4-benzenetriol (1,2,4-THB) in 0.5M KCl were measured. The effect of adsorption on the oxidation potentials …
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The Development of Gelatin Based Tissue Adhesives for Use in Soft Tissue Biomedical Applications
… the material and adhesive properties of Gelatin Resorcinol Dialdehyde (GR-DIAL) tissue adhesives by varying formulation. Three adhesive formulations with altered weight content of water and glyoxal (a dialdehyde) were utilized. The adhesive formulations were characterized by pH and gelation time …
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