Zobrazeno 1 - 10
of 83
pro vyhledávání: '"John H. P. Tyman"'
Publikováno v:
Journal of Surfactants and Detergents. 12:337-344
The oligomers (m = 1,2,3,4 and 5) in the profile of compounds obtained in the ethoxylation of saturated cardanol with ethylene oxide have been synthesised. The first member which occurs only in traces in the reaction has now been synthesised by an im
Publikováno v:
Journal of Heterocyclic Chemistry. 45:397-404
The synthesis and characterisation of a series of novel 4-acylamino and 4-alkylamino-N-1,8-naphthalimides is described. The UV-visible absorption and emission properties of the compounds are reported. Significant solvent effects are noted for 4-n-but
Autor:
John H. P. Tyman, Robert A. Johnson
Publikováno v:
Journal of the American Oil Chemists' Society. 84:573-578
To study the relationship between structure and properties of members of the lipidic thiobis phenol series, as extreme pressure additives in lubricants, a series of homologous compounds has been synthesised by the reaction of alkylphenols with sulphu
Autor:
John H. P. Tyman
Publikováno v:
Journal of Applied Chemistry. 20:179-182
Autor:
John H. P. Tyman, Mahesh Patel
Publikováno v:
Journal of Chemical Research. 2007:298-301
The coloured products from the reaction of resorcinols with methylamine, dimethylamine and other alkylamines have been studied. Phenoxazinones, xantheines and other nitrogenous compounds are formed.
Autor:
John H. P. Tyman
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 25:761-767
In the hydrogenolysis of methoxy-substituted benzylic alcohols side reactions of demethoxylation and ring saturation can occur under mild conditions which depend on the activity of the palladium–carbon catalyst used. Chromato-graphic and spectrosco
Autor:
John H. P. Tyman
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 22:465-474
The main cause of low yields in the formation of allylic alcohols from unsaturated carbonyl compounds by the Meerwein—Ponndorf—Verley reaction has been found to be polymerisation of the product by acidity arising from small amounts of chloroalkox
Publikováno v:
Journal of Chemical Technology & Biotechnology. 53:389-396
The rate of the Mannich reaction between 3-pentadecylphenol, di-n-propylamine and 40% aqueous formaldehyde in aqueous ethanol under basic conditions has been studied by an HPLC analytical technique following preliminary experiments with dimethylamine
Publikováno v:
Journal of Chemical Technology and Biotechnology. 32:681-690
The separation of cardanol from cardol and coloured impurities in technical cashew nut-shell liquid (CNSL) has been examined by molecular and vacuum distillation and the purity of fractions carefully assessed by thin-layer, gas-liquid and high-perfor
Autor:
Peter B. Payne, John H. P. Tyman
Publikováno v:
Journal of Applied Polymer Science. 105:420-423
A variety of phenolic aryl-1,2- and 1,3-diols have been condensed with formaldehyde to form polymers serving as immobilized chelatants for borate anions. In this way, polymers from 1,2-dihydroxybenzene, 2-hydroxymethylphenol, and a 3-methyl derivativ