Exploration of the effect of 2,​6-​(t-​Bu)​2-​4-​Me-​C6H2OH (BHT) in chain shuttling polymerization

C.D. Descour; T.J.J. Sciarone; D. Cavallo; T. Macko; M. Kelchtermans; I.V. Korobkov; R. Duchateau

doi:10.1039/c3py00506b

Exploration of the effect of 2,6-(t-Bu)2-4-Me-C6H2OH (BHT) in chain shuttling polymerization

C.D. Descour, T.J.J. Sciarone, D. Cavallo, T. Macko, M. Kelchtermans, I.V. Korobkov, R. Duchateau

Chemical Engineering and Chemistry

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Abstract

The interactions of a sterically hindered phenol [2,¿6-¿(t-¿Bu)¿2-¿4-¿Me-¿C6H2OH] (BHT) with the scavenger MAO (AlR3) and ZnR2 during Hf¿/Zr-¿based chain shuttling polymn. in a semi-¿batch reactor have been investigated. NMR model studies indicated preferential binding of BHT to aluminum under these conditions. Subsequently, reproducible polymn. runs gave rise to copolymers that were thoroughly characterized by HT-¿SEC, HT-¿HPLC, DSC, thermal fractionation (SSA)¿, 13C NMR, d. measurements, CRYSTAF and optical microscopy to unravel their complex microstructures. The obtained materials differ from a simple soln. blend of materials, sep. produced by single catalysts, but also from multi-¿block copolymers as obtained by DOW's continuous process, although a blocky structure can be rationalized.

Original language	English
Pages (from-to)	4718-4729
Number of pages	12
Journal	Polymer Chemistry
Volume	4
Issue number	17
DOIs	https://doi.org/10.1039/c3py00506b
Publication status	Published - 2013

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10.1039/c3py00506b

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title = "Exploration of the effect of 2,6-(t-Bu)2-4-Me-C6H2OH (BHT) in chain shuttling polymerization",

abstract = "The interactions of a sterically hindered phenol [2,¿6-¿(t-¿Bu)¿2-¿4-¿Me-¿C6H2OH] (BHT) with the scavenger MAO (AlR3) and ZnR2 during Hf¿/Zr-¿based chain shuttling polymn. in a semi-¿batch reactor have been investigated. NMR model studies indicated preferential binding of BHT to aluminum under these conditions. Subsequently, reproducible polymn. runs gave rise to copolymers that were thoroughly characterized by HT-¿SEC, HT-¿HPLC, DSC, thermal fractionation (SSA)¿, 13C NMR, d. measurements, CRYSTAF and optical microscopy to unravel their complex microstructures. The obtained materials differ from a simple soln. blend of materials, sep. produced by single catalysts, but also from multi-¿block copolymers as obtained by DOW's continuous process, although a blocky structure can be rationalized.",

author = "C.D. Descour and T.J.J. Sciarone and D. Cavallo and T. Macko and M. Kelchtermans and I.V. Korobkov and R. Duchateau",

year = "2013",

doi = "10.1039/c3py00506b",

language = "English",

volume = "4",

pages = "4718--4729",

journal = "Polymer Chemistry",

issn = "1759-9954",

publisher = "Royal Society of Chemistry",

number = "17",

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TY - JOUR

T1 - Exploration of the effect of 2,6-(t-Bu)2-4-Me-C6H2OH (BHT) in chain shuttling polymerization

AU - Descour, C.D.

AU - Sciarone, T.J.J.

AU - Cavallo, D.

AU - Macko, T.

AU - Kelchtermans, M.

AU - Korobkov, I.V.

AU - Duchateau, R.

PY - 2013

Y1 - 2013

N2 - The interactions of a sterically hindered phenol [2,¿6-¿(t-¿Bu)¿2-¿4-¿Me-¿C6H2OH] (BHT) with the scavenger MAO (AlR3) and ZnR2 during Hf¿/Zr-¿based chain shuttling polymn. in a semi-¿batch reactor have been investigated. NMR model studies indicated preferential binding of BHT to aluminum under these conditions. Subsequently, reproducible polymn. runs gave rise to copolymers that were thoroughly characterized by HT-¿SEC, HT-¿HPLC, DSC, thermal fractionation (SSA)¿, 13C NMR, d. measurements, CRYSTAF and optical microscopy to unravel their complex microstructures. The obtained materials differ from a simple soln. blend of materials, sep. produced by single catalysts, but also from multi-¿block copolymers as obtained by DOW's continuous process, although a blocky structure can be rationalized.

AB - The interactions of a sterically hindered phenol [2,¿6-¿(t-¿Bu)¿2-¿4-¿Me-¿C6H2OH] (BHT) with the scavenger MAO (AlR3) and ZnR2 during Hf¿/Zr-¿based chain shuttling polymn. in a semi-¿batch reactor have been investigated. NMR model studies indicated preferential binding of BHT to aluminum under these conditions. Subsequently, reproducible polymn. runs gave rise to copolymers that were thoroughly characterized by HT-¿SEC, HT-¿HPLC, DSC, thermal fractionation (SSA)¿, 13C NMR, d. measurements, CRYSTAF and optical microscopy to unravel their complex microstructures. The obtained materials differ from a simple soln. blend of materials, sep. produced by single catalysts, but also from multi-¿block copolymers as obtained by DOW's continuous process, although a blocky structure can be rationalized.

U2 - 10.1039/c3py00506b

DO - 10.1039/c3py00506b

M3 - Article

SN - 1759-9954

VL - 4

SP - 4718

EP - 4729

JO - Polymer Chemistry

JF - Polymer Chemistry

IS - 17

ER -

Exploration of the effect of 2,​6-​(t-​Bu)​2-​4-​Me-​C6H2OH (BHT) in chain shuttling polymerization

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Exploration of the effect of 2,6-(t-Bu)2-4-Me-C6H2OH (BHT) in chain shuttling polymerization