Zobrazeno 1 - 10
of 39
pro vyhledávání: '"V.V. Yevreinov"'
Publikováno v:
Polymer Science U.S.S.R.. 20:1537-1542
A study was made of the effect average molecular weights of initial oligomers containing hydroxyl and process conditions on molecular weight characteristics of linear polyurethanes obtained from them. Experimental molecular characteristics of resulti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba4033c805760da619294e25d3767b1b
https://doi.org/10.1016/0032-3950(78)90370-2
https://doi.org/10.1016/0032-3950(78)90370-2
Publikováno v:
Polymer Science U.S.S.R.. 16:2183-2191
A study was made of quantitative characteristics of distribution according to type of functionality (DTF), MWD and their ratios for oligomers of different types. For polycondensation oligomers containing hydroxyl (polydiethyleneglycol adipate, polytr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0363a6af562ad458fb238f88847fb4bf
https://doi.org/10.1016/0032-3950(74)90293-7
https://doi.org/10.1016/0032-3950(74)90293-7
Publikováno v:
Polymer Science U.S.S.R.. 20:2412-2417
Using a system incorporating a copolymer of tetrahydrofuran and propylene oxide, 1,4-butanediol, 1,1,1-trimethylolpropane and 2,4-toluylenedi-isocyanate, an analysis was made of the possible use of critical conditions of gel formation and the concent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80e744e7b648ccddf16d878bff36b4fe
https://doi.org/10.1016/0032-3950(78)90412-4
https://doi.org/10.1016/0032-3950(78)90412-4
Publikováno v:
Polymer Science U.S.S.R.. 24:1144-1150
The size and flexibility of molecules in solutions has been studied by determining the intrinsic viscosities of diethylene glycol adipate oligomers (DEGA). The Huggins constant of the oligomer solutions in MEK has been found to be in the range 0.2–
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e45634d7b64ba67e8163903c4474d16
https://doi.org/10.1016/0032-3950(82)90217-9
https://doi.org/10.1016/0032-3950(82)90217-9
Publikováno v:
Polymer Science U.S.S.R.. 30:972-977
A series of oligoesters/ethers with terminal hydroxyl groups has been separated by types of functionality on chromatography in the critical region: polyesters based on adipic acid and ethylene glycol, diethylene glycol and propylene glycol and oligoe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02f57f0bc0b01b2deeef3a89747f9c99
https://doi.org/10.1016/0032-3950(88)90318-8
https://doi.org/10.1016/0032-3950(88)90318-8
Publikováno v:
Polymer Science U.S.S.R.. 30:963-971
Possible variants for optimizing the process of chromatographic separation by functionality in critical conditions (using hydroxyl-containing oligobutadienes) including modification of the immobile phase and the functional groups of the oligomer and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3c0e461b5021cb4017089dbaec0ec98
https://doi.org/10.1016/0032-3950(88)90317-6
https://doi.org/10.1016/0032-3950(88)90317-6
Publikováno v:
Polymer Science U.S.S.R.. 20:2663-2672
Methods were developed for gradient fractionation according to type of functionality of polydiethylene glycol adipates of varying functionality, containing hydroxyl. It was established that during synthesis the content of intermediate product sometim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7950009dbd2a5ccc48317318a5b891d8
https://doi.org/10.1016/0032-3950(78)90205-8
https://doi.org/10.1016/0032-3950(78)90205-8
Publikováno v:
Polymer Science U.S.S.R.. 31:2064-2075
The structural heterogeneity of epoxy resins based on bisphenol and epichlorohydrin has been studied by chromatographic analysis of the macromolecules in the critical region of separation. As a result of side reactions 14 types of functionally defect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73741ec67ab8f40bf74e78df9eded568
https://doi.org/10.1016/0032-3950(89)90427-9
https://doi.org/10.1016/0032-3950(89)90427-9
Publikováno v:
Polymer Science U.S.S.R.. 23:1820-1827
The authors have studied the effect of solvents on the adsorption of oligomers of similar molecular mass and different functionality. It is shown that with rise in the functionality, the degree of adsorption increases in all solvents. In methylethylk
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42161af4c109a6f0b360c33aef863ae3
https://doi.org/10.1016/0032-3950(81)90422-6
https://doi.org/10.1016/0032-3950(81)90422-6
Publikováno v:
Polymer Science U.S.S.R.. 28:1381-1387
The paper examines the influence of the MD function of the initial hydroxyl-containing oligomers and the conditions of the process on the MD functions of linear PU obtained from oligomers and diisocyanates. The numerical functions of the MD of polyur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8ffb3d1ca759df75744ef5d4f268582
https://doi.org/10.1016/0032-3950(86)90129-2
https://doi.org/10.1016/0032-3950(86)90129-2