clarity software (gpc extension (DataApex Inc)
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DataApex Inc
clarity software (gpc extension
Clarity Software (Gpc Extension, supplied by DataApex Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/clarity+software+(gpc+extension/clarity+software/10__1016_slash_j__polymer__2024__127440-60-4-10
Average 90 stars, based on 1 article reviews
Clarity Software (Gpc Extension, supplied by DataApex Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/clarity+software+(gpc+extension/clarity+software/10__1016_slash_j__polymer__2024__127440-60-4-10
Average 90 stars, based on 1 article reviews
clarity software (gpc extension - by Bioz Stars,
2026-09
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Software:Article Title: Transesterification in Alcohol-Initiated ROPs of <scp>l</scp> - and <i>meso</i> -Lactide Catalyzed by Sn(II) and Sn(IV) Compounds at Low Temperatures Article Snippet: Dr. S. M. Weidner Federal Institute for Materials Research and Testing—BAM Richard-Willstätter-Straße 11 D-12489 Berlin, Germany Prof. H. R. Kricheldorf Institut für Technische und Makromolekulare Chemie Bundesstraße 45 D-20146 Hamburg, Germany E-mail: hrkricheldorf@aol.de The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/macp.201800445. Article Title: SnOct2-Catalyzed Syntheses of Cyclic Poly(l-lactide)s with Catechol as Low-Toxic Co-catalyst Article Snippet: Polymerizations of l-lactide in bulk at 160 or 180 °C were performed with 1/1 mixtures of catechol (CA) or 4-tert-butylcatechol (BuCA) and tin(II)-2-ethylhexanoate (SnOct2) as catalysts and a variation of the Lac/Cat ratio.. Weight average molar masses (Mw) up to 170,000 g mol−1 were obtained with CA and up to 120,000 g mol−1 with BuCA.. The cyclic structure of the resulting poly(l-lactide)s was proven by MALDI-TOF mass spectrometry and by comparison of their hydrodynamic volumes with those of commercial linear poly(l-lactide)s. The predominance of even-numbered cycles increased with lower temperatures and shorter polymerization times. Article Title: Ring-expansion polymerization (REP) of l-lactide with cyclic tin(II) bisphenoxides Article Snippet: Five new cyclic catalysts were prepared by a new synthetic method from tin(II)-2-ethyhexanoate and silylated catechols, silylated 2,2′dihydroxybiphenyl or silylated 1,1′-bisnaphthol.. These catalysts were compared with regard to their usefulness as catalysts for the ring expansion polymerization (REP) of L-lactide in bulk at 160 °C, and with two different tin(IV) derivatives of 1,1′bisnaphthol.. Best results were obtained using seven-membered cyclic tin(II)bisphenoxides, which yielded colorless cyclic poly(L-lactide)s free of racemization with weight average molecular weights (Mw) up to 305,000 gmol. Article Title: About formation of cycles in Sn(II) octanoate-catalyzed polymerizations of lactides Article Snippet: At first, formation of cycles in commercial poly(Llactide)s is discussed and compared with benzyl alcoholinitiated polymerizations performed in this work.. This comparison was extended to polymerizations initiated with 4cyanophenol and pentafluorothiophenol which yielded cyclic polylactides via end-biting.. The initiator/catalyst ratio and the acidity of the initiator were found to be decisive for the extent of cyclization. Article Title: Cyclic poly(lactide)s via the ROPPOC method catalyzed by alkyl‐ or aryltin chlorides Article Snippet: Acomparison of tributyltin chloride, dibutyltin dichloride, and butyltin trichloride as catalysts of ring-opening polymerizations (ROPs) of l-lactides at 160 C in bulk reveals increasing reactivity in the above order, but only the least reactive catalysts, Bu3SnCl, yield a uniform reaction product, namely cyclic poly(L-lactide)s with weight average molecular weights (Mw ́s) in the range of 40,000–80,000.. A comparison of dimethyltin , dibutyltin , and diphenyltin dichlorides resulted in the following order of reactivity: Me2SnCl2 < Bu2SnCl2 < Gel Permeation Chromatography:Article Title: Transesterification in Alcohol-Initiated ROPs of <scp>l</scp> - and <i>meso</i> -Lactide Catalyzed by Sn(II) and Sn(IV) Compounds at Low Temperatures Article Snippet: Dr. S. M. Weidner Federal Institute for Materials Research and Testing—BAM Richard-Willstätter-Straße 11 D-12489 Berlin, Germany Prof. H. R. Kricheldorf Institut für Technische und Makromolekulare Chemie Bundesstraße 45 D-20146 Hamburg, Germany E-mail: hrkricheldorf@aol.de The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/macp.201800445. Article Title: SnOct2-Catalyzed Syntheses of Cyclic Poly(l-lactide)s with Catechol as Low-Toxic Co-catalyst Article Snippet: Polymerizations of l-lactide in bulk at 160 or 180 °C were performed with 1/1 mixtures of catechol (CA) or 4-tert-butylcatechol (BuCA) and tin(II)-2-ethylhexanoate (SnOct2) as catalysts and a variation of the Lac/Cat ratio.. Weight average molar masses (Mw) up to 170,000 g mol−1 were obtained with CA and up to 120,000 g mol−1 with BuCA.. The cyclic structure of the resulting poly(l-lactide)s was proven by MALDI-TOF mass spectrometry and by comparison of their hydrodynamic volumes with those of commercial linear poly(l-lactide)s. The predominance of even-numbered cycles increased with lower temperatures and shorter polymerization times. Article Title: Ring-expansion polymerization (REP) of l-lactide with cyclic tin(II) bisphenoxides Article Snippet: Five new cyclic catalysts were prepared by a new synthetic method from tin(II)-2-ethyhexanoate and silylated catechols, silylated 2,2′dihydroxybiphenyl or silylated 1,1′-bisnaphthol.. These catalysts were compared with regard to their usefulness as catalysts for the ring expansion polymerization (REP) of L-lactide in bulk at 160 °C, and with two different tin(IV) derivatives of 1,1′bisnaphthol.. Best results were obtained using seven-membered cyclic tin(II)bisphenoxides, which yielded colorless cyclic poly(L-lactide)s free of racemization with weight average molecular weights (Mw) up to 305,000 gmol. Article Title: About formation of cycles in Sn(II) octanoate-catalyzed polymerizations of lactides Article Snippet: At first, formation of cycles in commercial poly(Llactide)s is discussed and compared with benzyl alcoholinitiated polymerizations performed in this work.. This comparison was extended to polymerizations initiated with 4cyanophenol and pentafluorothiophenol which yielded cyclic polylactides via end-biting.. The initiator/catalyst ratio and the acidity of the initiator were found to be decisive for the extent of cyclization. Article Title: Cyclic poly(lactide)s via the ROPPOC method catalyzed by alkyl‐ or aryltin chlorides Article Snippet: Acomparison of tributyltin chloride, dibutyltin dichloride, and butyltin trichloride as catalysts of ring-opening polymerizations (ROPs) of l-lactides at 160 C in bulk reveals increasing reactivity in the above order, but only the least reactive catalysts, Bu3SnCl, yield a uniform reaction product, namely cyclic poly(L-lactide)s with weight average molecular weights (Mw ́s) in the range of 40,000–80,000.. A comparison of dimethyltin , dibutyltin , and diphenyltin dichlorides resulted in the following order of reactivity: Me2SnCl2 < Bu2SnCl2 < Control:Article Title: Transesterification in Alcohol-Initiated ROPs of <scp>l</scp> - and <i>meso</i> -Lactide Catalyzed by Sn(II) and Sn(IV) Compounds at Low Temperatures Article Snippet: Dr. S. M. Weidner Federal Institute for Materials Research and Testing—BAM Richard-Willstätter-Straße 11 D-12489 Berlin, Germany Prof. H. R. Kricheldorf Institut für Technische und Makromolekulare Chemie Bundesstraße 45 D-20146 Hamburg, Germany E-mail: hrkricheldorf@aol.de The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/macp.201800445. Article Title: SnOct2-Catalyzed Syntheses of Cyclic Poly(l-lactide)s with Catechol as Low-Toxic Co-catalyst Article Snippet: Polymerizations of l-lactide in bulk at 160 or 180 °C were performed with 1/1 mixtures of catechol (CA) or 4-tert-butylcatechol (BuCA) and tin(II)-2-ethylhexanoate (SnOct2) as catalysts and a variation of the Lac/Cat ratio.. Weight average molar masses (Mw) up to 170,000 g mol−1 were obtained with CA and up to 120,000 g mol−1 with BuCA.. The cyclic structure of the resulting poly(l-lactide)s was proven by MALDI-TOF mass spectrometry and by comparison of their hydrodynamic volumes with those of commercial linear poly(l-lactide)s. The predominance of even-numbered cycles increased with lower temperatures and shorter polymerization times. Article Title: Ring-expansion polymerization (REP) of l-lactide with cyclic tin(II) bisphenoxides Article Snippet: Five new cyclic catalysts were prepared by a new synthetic method from tin(II)-2-ethyhexanoate and silylated catechols, silylated 2,2′dihydroxybiphenyl or silylated 1,1′-bisnaphthol.. These catalysts were compared with regard to their usefulness as catalysts for the ring expansion polymerization (REP) of L-lactide in bulk at 160 °C, and with two different tin(IV) derivatives of 1,1′bisnaphthol.. Best results were obtained using seven-membered cyclic tin(II)bisphenoxides, which yielded colorless cyclic poly(L-lactide)s free of racemization with weight average molecular weights (Mw) up to 305,000 gmol. Article Title: About formation of cycles in Sn(II) octanoate-catalyzed polymerizations of lactides Article Snippet: At first, formation of cycles in commercial poly(Llactide)s is discussed and compared with benzyl alcoholinitiated polymerizations performed in this work.. This comparison was extended to polymerizations initiated with 4cyanophenol and pentafluorothiophenol which yielded cyclic polylactides via end-biting.. The initiator/catalyst ratio and the acidity of the initiator were found to be decisive for the extent of cyclization. Article Title: Cyclic poly(lactide)s via the ROPPOC method catalyzed by alkyl‐ or aryltin chlorides Article Snippet: Acomparison of tributyltin chloride, dibutyltin dichloride, and butyltin trichloride as catalysts of ring-opening polymerizations (ROPs) of l-lactides at 160 C in bulk reveals increasing reactivity in the above order, but only the least reactive catalysts, Bu3SnCl, yield a uniform reaction product, namely cyclic poly(L-lactide)s with weight average molecular weights (Mw ́s) in the range of 40,000–80,000.. A comparison of dimethyltin , dibutyltin , and diphenyltin dichlorides resulted in the following order of reactivity: Me2SnCl2 < Bu2SnCl2 < Molecular Weight:Article Title: Transesterification in Alcohol-Initiated ROPs of <scp>l</scp> - and <i>meso</i> -Lactide Catalyzed by Sn(II) and Sn(IV) Compounds at Low Temperatures Article Snippet: Dr. S. M. Weidner Federal Institute for Materials Research and Testing—BAM Richard-Willstätter-Straße 11 D-12489 Berlin, Germany Prof. H. R. Kricheldorf Institut für Technische und Makromolekulare Chemie Bundesstraße 45 D-20146 Hamburg, Germany E-mail: hrkricheldorf@aol.de The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/macp.201800445. Article Title: Ring-expansion polymerization (REP) of l-lactide with cyclic tin(II) bisphenoxides Article Snippet: Five new cyclic catalysts were prepared by a new synthetic method from tin(II)-2-ethyhexanoate and silylated catechols, silylated 2,2′dihydroxybiphenyl or silylated 1,1′-bisnaphthol.. These catalysts were compared with regard to their usefulness as catalysts for the ring expansion polymerization (REP) of L-lactide in bulk at 160 °C, and with two different tin(IV) derivatives of 1,1′bisnaphthol.. Best results were obtained using seven-membered cyclic tin(II)bisphenoxides, which yielded colorless cyclic poly(L-lactide)s free of racemization with weight average molecular weights (Mw) up to 305,000 gmol. Article Title: Cyclic poly(lactide)s via the ROPPOC method catalyzed by alkyl‐ or aryltin chlorides Article Snippet: Acomparison of tributyltin chloride, dibutyltin dichloride, and butyltin trichloride as catalysts of ring-opening polymerizations (ROPs) of l-lactides at 160 C in bulk reveals increasing reactivity in the above order, but only the least reactive catalysts, Bu3SnCl, yield a uniform reaction product, namely cyclic poly(L-lactide)s with weight average molecular weights (Mw ́s) in the range of 40,000–80,000.. A comparison of dimethyltin , dibutyltin , and diphenyltin dichlorides resulted in the following order of reactivity: Me2SnCl2 < Bu2SnCl2 < other:Article Title: Matrix-assisted laser desorption/ionization behavior of neat linear and cyclic poly(L-lactide)s and their blends. Article Snippet: For instrument control and |