Matches in SemOpenAlex for { <https://semopenalex.org/work/W2168562227> ?p ?o ?g. }
Showing items 1 to 99 of
99
with 100 items per page.
- W2168562227 endingPage "1852" @default.
- W2168562227 startingPage "1831" @default.
- W2168562227 abstract "Abstract Aromatic bisorthoesters were found to be good polymer intermediates and could be condensed with aromatic tetramines under mild conditions, in DMSO at 100°C in a relatively short reaction time to give polybenzimidazoles. The hexapropyl orthoesters of terephthalic and isophthalic acid were the preferred aromatic orthoesters because they were relatively easily purified by vacuum distillation to polymer grade intermediates, since they are liquids. Higher orthoesters distill even under good vacuum near or above the decomposition temperature of the orthoester group. Hexaethyl orthooxalate was also used and is a very useful and stable derivative of oxalic acid, which can be used for condensation reactions. These three orthoesters were used for condensations with 3,3′,4,4′‐tetraaminobiphenyl, 1,2,3,4‐tetraaminobenzene, 3,3′,4,4′‐tetraaminobiphenyl ether, and 3,3′,4,4′‐tetraaminobenzophenone. All polybenzimidazoles were obtained in high to quantitative yields and with varying molecular weights (η inh = 0.1−0.8 dl/g), which in some cases were in the fiber forming range." @default.
- W2168562227 created "2016-06-24" @default.
- W2168562227 creator A5031749028 @default.
- W2168562227 creator A5043560424 @default.
- W2168562227 date "1978-08-01" @default.
- W2168562227 modified "2023-10-09" @default.
- W2168562227 title "Bisorthoesters as polymer intermediates. II. A facile method for the preparation of polybenzimidazoles" @default.
- W2168562227 cites W1597351106 @default.
- W2168562227 cites W1967079258 @default.
- W2168562227 cites W1979134421 @default.
- W2168562227 cites W1982508396 @default.
- W2168562227 cites W1995254960 @default.
- W2168562227 cites W2007440650 @default.
- W2168562227 cites W2069062879 @default.
- W2168562227 cites W2079278432 @default.
- W2168562227 cites W2083224078 @default.
- W2168562227 cites W2087278877 @default.
- W2168562227 cites W2094619688 @default.
- W2168562227 cites W2094977064 @default.
- W2168562227 cites W2118349017 @default.
- W2168562227 cites W2120882927 @default.
- W2168562227 cites W2169365236 @default.
- W2168562227 cites W2315281569 @default.
- W2168562227 cites W2315719163 @default.
- W2168562227 cites W2320542767 @default.
- W2168562227 cites W2322636902 @default.
- W2168562227 cites W2323714077 @default.
- W2168562227 cites W2324031752 @default.
- W2168562227 cites W2329918991 @default.
- W2168562227 cites W2332110010 @default.
- W2168562227 cites W4243365660 @default.
- W2168562227 cites W4244737915 @default.
- W2168562227 cites W4249530374 @default.
- W2168562227 cites W4251129639 @default.
- W2168562227 cites W4254214164 @default.
- W2168562227 doi "https://doi.org/10.1002/pol.1978.170160806" @default.
- W2168562227 hasPublicationYear "1978" @default.
- W2168562227 type Work @default.
- W2168562227 sameAs 2168562227 @default.
- W2168562227 citedByCount "14" @default.
- W2168562227 countsByYear W21685622272014 @default.
- W2168562227 countsByYear W21685622272015 @default.
- W2168562227 countsByYear W21685622272016 @default.
- W2168562227 crossrefType "journal-article" @default.
- W2168562227 hasAuthorship W2168562227A5031749028 @default.
- W2168562227 hasAuthorship W2168562227A5043560424 @default.
- W2168562227 hasConcept C119394753 @default.
- W2168562227 hasConcept C121332964 @default.
- W2168562227 hasConcept C124681953 @default.
- W2168562227 hasConcept C178790620 @default.
- W2168562227 hasConcept C185592680 @default.
- W2168562227 hasConcept C188027245 @default.
- W2168562227 hasConcept C200093464 @default.
- W2168562227 hasConcept C204030448 @default.
- W2168562227 hasConcept C2779271837 @default.
- W2168562227 hasConcept C2780330708 @default.
- W2168562227 hasConcept C2780387816 @default.
- W2168562227 hasConcept C2780407432 @default.
- W2168562227 hasConcept C2781346138 @default.
- W2168562227 hasConcept C521977710 @default.
- W2168562227 hasConcept C73522102 @default.
- W2168562227 hasConcept C97355855 @default.
- W2168562227 hasConceptScore W2168562227C119394753 @default.
- W2168562227 hasConceptScore W2168562227C121332964 @default.
- W2168562227 hasConceptScore W2168562227C124681953 @default.
- W2168562227 hasConceptScore W2168562227C178790620 @default.
- W2168562227 hasConceptScore W2168562227C185592680 @default.
- W2168562227 hasConceptScore W2168562227C188027245 @default.
- W2168562227 hasConceptScore W2168562227C200093464 @default.
- W2168562227 hasConceptScore W2168562227C204030448 @default.
- W2168562227 hasConceptScore W2168562227C2779271837 @default.
- W2168562227 hasConceptScore W2168562227C2780330708 @default.
- W2168562227 hasConceptScore W2168562227C2780387816 @default.
- W2168562227 hasConceptScore W2168562227C2780407432 @default.
- W2168562227 hasConceptScore W2168562227C2781346138 @default.
- W2168562227 hasConceptScore W2168562227C521977710 @default.
- W2168562227 hasConceptScore W2168562227C73522102 @default.
- W2168562227 hasConceptScore W2168562227C97355855 @default.
- W2168562227 hasIssue "8" @default.
- W2168562227 hasLocation W21685622271 @default.
- W2168562227 hasOpenAccess W2168562227 @default.
- W2168562227 hasPrimaryLocation W21685622271 @default.
- W2168562227 hasRelatedWork W2013262721 @default.
- W2168562227 hasRelatedWork W2020979969 @default.
- W2168562227 hasRelatedWork W2089298236 @default.
- W2168562227 hasRelatedWork W2376718974 @default.
- W2168562227 hasRelatedWork W2509209000 @default.
- W2168562227 hasRelatedWork W2736242356 @default.
- W2168562227 hasRelatedWork W2802666513 @default.
- W2168562227 hasRelatedWork W2916230013 @default.
- W2168562227 hasRelatedWork W4251178281 @default.
- W2168562227 hasRelatedWork W2598496213 @default.
- W2168562227 hasVolume "16" @default.
- W2168562227 isParatext "false" @default.
- W2168562227 isRetracted "false" @default.
- W2168562227 magId "2168562227" @default.
- W2168562227 workType "article" @default.