Wiley

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Thermal stability of p‐phenylene sulphide polymers
Wiley - Tập 17 Số 10 - Trang 269-275 - 1967
Robin M. Black, C. F. List, RJ Wells
AbstractThe thermal stability of a series of linear and branched p‐phenylene sulphide polymers at 350° has been evaluated by differential thermal analysis, thermogravimetric analysis and weight‐loss studies. It has been concluded that there is some indication that the thermal stability increases with the degree of branching present in the...... hiện toàn bộ
Catalytic synthesis of ethyl propionate from diethyl ether and carbon monoxide at high pressure
Wiley - Tập 12 Số 4 - Trang 174-182 - 1962
S. K. Bhattacharyya, Sourav Palit
AbstractThe catalytic synthesis of ethyl propionate from diethyl ether and carbon monoxide has been studied in the presence of nickel, cobalt and iron catalysts at a pressure range of 175–375 atm., and temperature range of 200–300°. Of the various catalysts tested, the iodides of iron, cobalt and nickel, supported on silica gel, exhibit the maximum catalytic activi...... hiện toàn bộ
Synthesis and properties of some gelatin derivatives with substituents at the amino group
Wiley - Tập 15 Số 10 - Trang 479-488 - 1965
R. C. Clark, W. G. Cobbett, Jane Gibbs, Richard T. Jones, A. A. Leach, Anita Pratt, Dwight Sutton
AbstractGelatin has been interacted with benzenesulphonyl chloride and with other sulphonyl chlorides to give sulphonyl‐gelatin derivatives. With dichloro‐s‐triazines, gelatin afforded crosslinked products or monofunctionally substituted soluble products according to the reactivity of the dichloro‐s‐triazine sel...... hiện toàn bộ
Electrical measurements in the study of immersed paint coatings on metal. I. Comparison between capacitance and gravimetric methods of estimating water‐uptake
Wiley - Tập 4 Số 2 - Trang 62-72 - 1954
D. M. Brasher, A.H. Kingsbury
AbstractAn electrical capacitance method of estimating the water‐uptake of paint films on metal immersed in sea‐water has given, for many paint formulations, values agreeing with those obtained by a gravimetric method. For a few paints, however, pronounced disagreement was shown between values obtained by the two methods.Theoretical considerations ...... hiện toàn bộ
Ideal copolymers and the second‐order transitions of synthetic rubbers. i. non‐crystalline copolymers
Wiley - Tập 2 Số 9 - Trang 493-500 - 1952
M. Gordon, James S. Taylor
AbstractTheoretical and practical evidence is put forward to show that copolymers can be treated like solutions of small molecules in the interpretation of packing phenomena, and that ideal volume‐additivity of the repeating units in copolymers is frequently realized. On this basis equations are derived for predicting θ, the second‐order transition temperature, of ...... hiện toàn bộ
Investigations on organo‐tin compounds. VIII. preparation of some organo‐tin hydrides
Wiley - Tập 7 Số 7 - Trang 366-369 - 1957
G. J. M. van der Kerk, J. G. NOLTES, J. G. A. Luijten
AbstractThe preparation, according to the slightly modified procedure of Finholt et al., of the following organo‐tin hydrides is described: triethyltin hydride, tri‐n‐propyltin hydride, tri‐n‐butyltin hydride, triphenyltin hydride, di‐n‐propyltin dihydride, d...... hiện toàn bộ
The surface properties of precipitated alumina. I. Preparation of active samples and determination of nitrogen adsorption isotherms
Wiley - Tập 5 Số 5 - Trang 223-227 - 1955
Michael Harris, K. S. W. Sing
AbstractAlumina precipitates have been prepared by treating sodium hydroxide with either aluminium chloride, or sulphate, at pH 5. Adsorption isotherms of nitrogen, determined at −196°on the outgassed products, were all of reversible S‐type, characteristic of physical adsorption on non‐porous solids. Surface areas have been calculated by the usual Brunauer, Emmett ...... hiện toàn bộ
Influence of silica on the hydration of 3 CaO,SiO2
Wiley - Tập 14 Số 8 - Trang 338-346 - 1964
H.N. Stein, J. M. Stevels
AbstractAmorphous silica accelerates the hydration rate of 3CaO,SiO2. This acceleration can be explained by assuming that the silica, by lowering calcium‐ and hydroxyl‐ion concentrations during the first minutes of the hydration, increases the conversion rate of a first protective hydrate layer into another less protective one....... hiện toàn bộ
Hydration of tricalcium silicate
Wiley - Tập 17 Số 9 - Trang 246-250 - 1967
J. G. M. de Jong, H.N. Stein, J. M. Stevels
AbstractResults of following the quantities of free Ca(OH)2 and of tricalcium silicate (C3S) during the hydration of C3S, and also the influence of the presence of free CaO on this reaction are in accordance with the hypothesis of Stein & Stevels with regard to the hydration of C3... hiện toàn bộ
The polyphosphates of cadmium, zinc and lead: The character, composition and behaviour of their complexes
Wiley - Tập 5 Số 3 - Trang 125-133 - 1955
M. Bobtelsky, S. Kertes
AbstractThis study is the second in a series of investigations of polyphosphates, in which only physical methods are used.The composition of the salts and complexes were studied by heterometric (photometric study of suspensions), pH and conductometric methods. The pyrophosphate anion‐complexes identified are: [MII(P2<...... hiện toàn bộ
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