Zobrazeno 1 - 10
of 31
pro vyhledávání: '"I.A. Vakhtina"'
Publikováno v:
Polymer Science U.S.S.R.. 22:2877-2881
Organosilicon foam stabilizers have been obtained by the grafting of polyether molecules on to polydimethylsiloxane. The way in which the molecular weight distribution and the number distribution of the polyether blocks in these compounds depend on t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e67035a900323ed4fa33102826b4979a
https://doi.org/10.1016/0032-3950(80)90445-1
https://doi.org/10.1016/0032-3950(80)90445-1
Publikováno v:
Polymer Science U.S.S.R.. 25:2859-2862
Methodical features of using thin-layer chromatography for the study of molecular characteristics of oligoarylates are described. A calibration curve is plotted.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ab5d410ca8823f3653e9560128f3043
https://doi.org/10.1016/0032-3950(83)90368-4
https://doi.org/10.1016/0032-3950(83)90368-4
Publikováno v:
Polymer Science U.S.S.R.. 18:2447-2450
Studies were made of MW and MWD of thermo-plastic polyurethanes (TPU) by gel permeation chromatography (GPC) using styro-gels in ethyl acetate. It was shown that the polydispersion of TPU is close to two, independent of the method of synthesis (in bu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b377420c0a0833a6b74292a79ce29a27
https://doi.org/10.1016/0032-3950(76)90126-x
https://doi.org/10.1016/0032-3950(76)90126-x
Publikováno v:
Polymer Science U.S.S.R.. 22:1833-1837
Thin-layer chromatography (TLC) on silica gel is used in a preparative form to separate polyoxypropylene polyols according to functionality. The methods developed enable components to be separated in polyoxypropylene polyols with one, two and three h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97f22af78a93b0c1ec8a151eab9e3f39
https://doi.org/10.1016/0032-3950(80)90070-2
https://doi.org/10.1016/0032-3950(80)90070-2
Determining the proportion of mono-functional components in oligoesters by thin-layer chromatography
Publikováno v:
Polymer Science U.S.S.R.. 24:2290-2294
A description is given of the use of thin-layer chromatography on silica gel for determining monofunctional impurities in hydroxyl-containing oligoesters. Optimum conditions were selected to determine monofunctional impurities with an accuracy of 25
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4739c4610a38e227cfeb9d1a8994ed6
https://doi.org/10.1016/0032-3950(82)90292-1
https://doi.org/10.1016/0032-3950(82)90292-1
Publikováno v:
Polymer Science U.S.S.R.. 22:1958-1965
The results of the fractionation and the mol.wt. of polyoxypropylene polyols (POPP) produced by the polyaddition reaction of propylene oxide with potassium glycerate in glycerol have shown that the neutral polyether contains two diol types one of whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f77a3d1146ab14ffd68e5b832516fa03
https://doi.org/10.1016/0032-3950(80)90251-8
https://doi.org/10.1016/0032-3950(80)90251-8
Publikováno v:
Polymer Science U.S.S.R.. 23:1221-1226
Hydroxyl-containing polyesters used for the synthesis of polyurethane thermoplastics have been fractionated according to functionality using the column liquid adsorption chromatography method. Gel permeation chromatography and thin-layer silicagel ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43ab8b5170ed52b4821fa21f5266bd21
https://doi.org/10.1016/0032-3950(81)90343-9
https://doi.org/10.1016/0032-3950(81)90343-9
Publikováno v:
Polymer Science U.S.S.R.. 28:2322-2326
The possibility of fractionation based on M of phenol formaldehyde resins by GPC has been studied on the Sephadex of different grades and Styrogel. On fractionation in ethyl alcohol for the Sephadex separation occurs by the adsorption mechanism and i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17ba42e678651d69a238a82a35a008b0
https://doi.org/10.1016/0032-3950(86)90049-3
https://doi.org/10.1016/0032-3950(86)90049-3
Publikováno v:
Polymer Science U.S.S.R.. 17:2442-2447
A description is given of the thin layer chromatography of polyols using 6 × 6 cm plates coated with KSK silica gel, the chromatograms being developed with a Dragendorf reagent based on solvents with adsorption properties similar to those of central
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::805172d8b8334843e9a9d15f29320c1a
https://doi.org/10.1016/0032-3950(75)90487-6
https://doi.org/10.1016/0032-3950(75)90487-6
Publikováno v:
Polymer Science U.S.S.R.. 18:541-545
A study was made of the composition according to functionality of polybutylene glycoladipates (PBGA) using special thin layer chromatographic methods and sheets coated with silica gel reinforced with gypsum. Linear and branched polyesters were comple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7645b193e1ba2a48a60a2f57185ac596
https://doi.org/10.1016/0032-3950(76)90508-6
https://doi.org/10.1016/0032-3950(76)90508-6