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Volumn 48, Issue 16, 2010, Pages 3702-3708

A stepping stone to stereospecific living cationic polymerization: Cationic polymerization of vinyl ethers using iron(II) sulfate

Author keywords

Cationic polymerization; Iron(II) sulfate; Poly(vinyl ethers); Stereospecific polymers; Tert butanol

Indexed keywords

CATALYTIC SYSTEM; CONTROLLED REACTIONS; DUAL CONTROL; END STRUCTURE; H NMR SPECTRA; LIVING CATIONIC POLYMERIZATION; POLY(VINYL ETHERS); POLYMERIZATION OF VINYL ETHERS; STEPPING STONE; STEREO-SPECIFIC POLYMERS; STEREOREGULARITY; STEREOSPECIFIC; TERT BUTANOL;

EID: 77956037975     PISSN: 0887624X     EISSN: 10990518     Source Type: Journal    
DOI: 10.1002/pola.24144     Document Type: Article
Times cited : (28)

References (52)
  • 12
    • 0033752160 scopus 로고    scopus 로고
    • (b) Coates, G. W. Chem Rev 2000, 100, 1223-1252.
    • (2000) Chem Rev , vol.100 , pp. 1223-1252
    • Coates, G.W.1
  • 18
    • 77956033241 scopus 로고
    • U.S. Patent 2,549,921, April 24
    • Mosley, S. A. U.S. Patent 2,549,921, April 24, 1951.
    • (1951)
    • Mosley, S.A.1
  • 38
    • 0003902928 scopus 로고    scopus 로고
    • Matyjaszewski, K., Ed.; Marcel Dekker: New York, Chapter 4
    • (c) Matyjaszewski, K.; Sawamoto, M. In Cationic Polymerizations; Matyjaszewski, K., Ed.; Marcel Dekker: New York, 1996; Chapter 4, pp 265-380;
    • (1996) Cationic Polymerizations , pp. 265-380
    • Matyjaszewski, K.1    Sawamoto, M.2
  • 45
    • 77956018831 scopus 로고    scopus 로고
    • The separated MEK-insoluble fractions of the polymers obtained under conditions producing a large amount of highmolecular weight parts (e.g., without additives, in the presence of DTBP, etc.) often became hard to be dissolved in various solvents once they were completely dried. Thus, for such polymers, the gelled portions obtained after centrifuging the mixtures in MEK were diluted with dichloromethane to yield homogeneous solutions. The solutions were left in air or under reduced pressure to gradually evaporate the solvents, dichloromethane and the residual MEK. Then, carbon tetrachloride was added and evaporated for several times to remove MEK as much as possible. Finally, the concentrated but still transparent solutions were diluted with solvents for the NMR and GPC measurements
    • The separated MEK-insoluble fractions of the polymers obtained under conditions producing a large amount of highmolecular weight parts (e.g., without additives, in the presence of DTBP, etc.) often became hard to be dissolved in various solvents once they were completely dried. Thus, for such polymers, the gelled portions obtained after centrifuging the mixtures in MEK were diluted with dichloromethane to yield homogeneous solutions. The solutions were left in air or under reduced pressure to gradually evaporate the solvents, dichloromethane and the residual MEK. Then, carbon tetrachloride was added and evaporated for several times to remove MEK as much as possible. Finally, the concentrated but still transparent solutions were diluted with solvents for the NMR and GPC measurements.
  • 46
    • 77956032327 scopus 로고    scopus 로고
    • w values to those obtained without additives. The MEK-insoluble fraction was the largest (19 wt %; 20 mM DTBP) among all the polymers obtained in the present study
    • w values to those obtained without additives. The MEK-insoluble fraction was the largest (19 wt %; 20 mM DTBP) among all the polymers obtained in the present study.
  • 49
  • 51
    • 67650918301 scopus 로고    scopus 로고
    • 2/dimethyl sulfide system, although no exchange reaction occurs
    • 2/dimethyl sulfide system, although no exchange reaction occurs: Nakatani, K.; Ouchi, M.; Sawamoto, M. J Polym Sci Part A: Polym Chem 2009, 47, 4194-4201.
    • (2009) J Polym Sci Part A: Polym Chem , vol.47 , pp. 4194-4201
    • Nakatani, K.1    Ouchi, M.2    Sawamoto, M.3
  • 52
    • 77956053573 scopus 로고    scopus 로고
    • note
    • 4 under various conditions have a broad peak around the region. The peak seems to mainly contain the latter acetal, although the former derived from MeOH used as a quencher may be present in some degree. However, the similarity in the shapes of the acetal peaks among the polymers obtained without alcohols and with MeOH or iPrOH indicates the less efficient participation of the two alcohols in the polymerizations.


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