Electron donors in carbocationic polymerization
Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the elect...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1989 |
|---|
| Umfang: |
8 |
|---|
| Reproduktion: |
Springer Online Journal Archives 1860-2002 |
|---|---|
| Übergeordnetes Werk: |
in: Polymer bulletin - 1978, 21(1989) vom: Jan., Seite 5-12 |
| Übergeordnetes Werk: |
volume:21 ; year:1989 ; month:01 ; pages:5-12 ; extent:8 |
| Links: |
|---|
| Katalog-ID: |
NLEJ203064267 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLEJ203064267 | ||
| 003 | DE-627 | ||
| 005 | 20210706115527.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 070528s1989 xx |||||o 00| ||eng c | ||
| 035 | |a (DE-627)NLEJ203064267 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 245 | 1 | 0 | |a Electron donors in carbocationic polymerization |
| 264 | 1 | |c 1989 | |
| 300 | |a 8 | ||
| 336 | |a nicht spezifiziert |b zzz |2 rdacontent | ||
| 337 | |a nicht spezifiziert |b z |2 rdamedia | ||
| 338 | |a nicht spezifiziert |b zu |2 rdacarrier | ||
| 520 | |a Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride. | ||
| 533 | |f Springer Online Journal Archives 1860-2002 | ||
| 700 | 1 | |a Zsuga, Miklos |4 oth | |
| 700 | 1 | |a Kennedy, J. P. |4 oth | |
| 773 | 0 | 8 | |i in |t Polymer bulletin |d 1978 |g 21(1989) vom: Jan., Seite 5-12 |w (DE-627)NLEJ188990879 |w (DE-600)1473175-7 |x 1436-2449 |7 nnns |
| 773 | 1 | 8 | |g volume:21 |g year:1989 |g month:01 |g pages:5-12 |g extent:8 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1007/BF00700261 |
| 912 | |a GBV_USEFLAG_U | ||
| 912 | |a ZDB-1-SOJ | ||
| 912 | |a GBV_NL_ARTICLE | ||
| 951 | |a AR | ||
| 952 | |d 21 |j 1989 |c 1 |h 5-12 |g 8 | ||
| matchkey_str |
article:14362449:1989----::lcrnoosnabctoip |
|---|---|
| hierarchy_sort_str |
1989 |
| publishDate |
1989 |
| allfields |
(DE-627)NLEJ203064267 DE-627 ger DE-627 rakwb eng Electron donors in carbocationic polymerization 1989 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride. Springer Online Journal Archives 1860-2002 Zsuga, Miklos oth Kennedy, J. P. oth in Polymer bulletin 1978 21(1989) vom: Jan., Seite 5-12 (DE-627)NLEJ188990879 (DE-600)1473175-7 1436-2449 nnns volume:21 year:1989 month:01 pages:5-12 extent:8 http://dx.doi.org/10.1007/BF00700261 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 21 1989 1 5-12 8 |
| spelling |
(DE-627)NLEJ203064267 DE-627 ger DE-627 rakwb eng Electron donors in carbocationic polymerization 1989 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride. Springer Online Journal Archives 1860-2002 Zsuga, Miklos oth Kennedy, J. P. oth in Polymer bulletin 1978 21(1989) vom: Jan., Seite 5-12 (DE-627)NLEJ188990879 (DE-600)1473175-7 1436-2449 nnns volume:21 year:1989 month:01 pages:5-12 extent:8 http://dx.doi.org/10.1007/BF00700261 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 21 1989 1 5-12 8 |
| allfields_unstemmed |
(DE-627)NLEJ203064267 DE-627 ger DE-627 rakwb eng Electron donors in carbocationic polymerization 1989 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride. Springer Online Journal Archives 1860-2002 Zsuga, Miklos oth Kennedy, J. P. oth in Polymer bulletin 1978 21(1989) vom: Jan., Seite 5-12 (DE-627)NLEJ188990879 (DE-600)1473175-7 1436-2449 nnns volume:21 year:1989 month:01 pages:5-12 extent:8 http://dx.doi.org/10.1007/BF00700261 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 21 1989 1 5-12 8 |
| allfieldsGer |
(DE-627)NLEJ203064267 DE-627 ger DE-627 rakwb eng Electron donors in carbocationic polymerization 1989 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride. Springer Online Journal Archives 1860-2002 Zsuga, Miklos oth Kennedy, J. P. oth in Polymer bulletin 1978 21(1989) vom: Jan., Seite 5-12 (DE-627)NLEJ188990879 (DE-600)1473175-7 1436-2449 nnns volume:21 year:1989 month:01 pages:5-12 extent:8 http://dx.doi.org/10.1007/BF00700261 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 21 1989 1 5-12 8 |
| allfieldsSound |
(DE-627)NLEJ203064267 DE-627 ger DE-627 rakwb eng Electron donors in carbocationic polymerization 1989 8 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride. Springer Online Journal Archives 1860-2002 Zsuga, Miklos oth Kennedy, J. P. oth in Polymer bulletin 1978 21(1989) vom: Jan., Seite 5-12 (DE-627)NLEJ188990879 (DE-600)1473175-7 1436-2449 nnns volume:21 year:1989 month:01 pages:5-12 extent:8 http://dx.doi.org/10.1007/BF00700261 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 21 1989 1 5-12 8 |
| language |
English |
| source |
in Polymer bulletin 21(1989) vom: Jan., Seite 5-12 volume:21 year:1989 month:01 pages:5-12 extent:8 |
| sourceStr |
in Polymer bulletin 21(1989) vom: Jan., Seite 5-12 volume:21 year:1989 month:01 pages:5-12 extent:8 |
| format_phy_str_mv |
Article |
| institution |
findex.gbv.de |
| isfreeaccess_bool |
false |
| container_title |
Polymer bulletin |
| authorswithroles_txt_mv |
Zsuga, Miklos @@oth@@ Kennedy, J. P. @@oth@@ |
| publishDateDaySort_date |
1989-01-01T00:00:00Z |
| hierarchy_top_id |
NLEJ188990879 |
| id |
NLEJ203064267 |
| language_de |
englisch |
| fullrecord |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ203064267</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210706115527.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">070528s1989 xx |||||o 00| ||eng c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ203064267</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Electron donors in carbocationic polymerization</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1989</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">8</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">Springer Online Journal Archives 1860-2002</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Zsuga, Miklos</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Kennedy, J. P.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">in</subfield><subfield code="t">Polymer bulletin</subfield><subfield code="d">1978</subfield><subfield code="g">21(1989) vom: Jan., Seite 5-12</subfield><subfield code="w">(DE-627)NLEJ188990879</subfield><subfield code="w">(DE-600)1473175-7</subfield><subfield code="x">1436-2449</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:21</subfield><subfield code="g">year:1989</subfield><subfield code="g">month:01</subfield><subfield code="g">pages:5-12</subfield><subfield code="g">extent:8</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1007/BF00700261</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-SOJ</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">21</subfield><subfield code="j">1989</subfield><subfield code="c">1</subfield><subfield code="h">5-12</subfield><subfield code="g">8</subfield></datafield></record></collection>
|
| series2 |
Springer Online Journal Archives 1860-2002 |
| ppnlink_with_tag_str_mv |
@@773@@(DE-627)NLEJ188990879 |
| format |
electronic Article |
| delete_txt_mv |
keep |
| collection |
NL |
| remote_str |
true |
| illustrated |
Not Illustrated |
| issn |
1436-2449 |
| topic_title |
Electron donors in carbocationic polymerization |
| format_facet |
Elektronische Aufsätze Aufsätze Elektronische Ressource |
| format_main_str_mv |
Text Zeitschrift/Artikel |
| carriertype_str_mv |
zu |
| author2_variant |
m z mz j p k jp jpk |
| hierarchy_parent_title |
Polymer bulletin |
| hierarchy_parent_id |
NLEJ188990879 |
| hierarchy_top_title |
Polymer bulletin |
| isfreeaccess_txt |
false |
| familylinks_str_mv |
(DE-627)NLEJ188990879 (DE-600)1473175-7 |
| title |
Electron donors in carbocationic polymerization |
| spellingShingle |
Electron donors in carbocationic polymerization |
| ctrlnum |
(DE-627)NLEJ203064267 |
| title_full |
Electron donors in carbocationic polymerization |
| journal |
Polymer bulletin |
| journalStr |
Polymer bulletin |
| lang_code |
eng |
| isOA_bool |
false |
| recordtype |
marc |
| publishDateSort |
1989 |
| contenttype_str_mv |
zzz |
| container_start_page |
5 |
| container_volume |
21 |
| physical |
8 |
| format_se |
Elektronische Aufsätze |
| title_sort |
electron donors in carbocationic polymerization |
| title_auth |
Electron donors in carbocationic polymerization |
| abstract |
Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride. |
| abstractGer |
Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride. |
| abstract_unstemmed |
Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride. |
| collection_details |
GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE |
| title_short |
Electron donors in carbocationic polymerization |
| url |
http://dx.doi.org/10.1007/BF00700261 |
| remote_bool |
true |
| author2 |
Zsuga, Miklos Kennedy, J. P. |
| author2Str |
Zsuga, Miklos Kennedy, J. P. |
| ppnlink |
NLEJ188990879 |
| mediatype_str_mv |
z |
| isOA_txt |
false |
| hochschulschrift_bool |
false |
| author2_role |
oth oth |
| up_date |
2024-07-06T09:41:52.509Z |
| _version_ |
1803822209444085760 |
| fullrecord_marcxml |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ203064267</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210706115527.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">070528s1989 xx |||||o 00| ||eng c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ203064267</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Electron donors in carbocationic polymerization</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1989</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">8</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Summary Low molecular weight (¯Mn ∼900–5000) narrow molecular weight distribution (MWD; ¯Mw/Mn = 1.1–1.2)tert.-chlorine telechelic polyisobutylenes (PIBs) have been synthesized by the use of thetrans-2,5-dimethyl-2,5-diacetoxy-3-hexene (DiOAcDMeH6)/BCl3 initiating system in the presence of the electron donor (ED) dimethyl sulfoxide (DMSO) in methyl chloride diluent at −30°C. The living character of the polymerization was demonstrated by linear Mn versus Wp (weight of polymer) plots starting at the origin with the slope of 1/[Io] (where [Io] = initiator concentration). DMSO reduces the overall rate of polymerization, however, it increases the initiator efficiency (Ieff) to ∼100%. The number averagetert.-chlorine end functionality is -Fn=1.97±0.04, by1H NMR spectroscopy. Polymerization mechanistic details are discussed. This is the first time narrow MWDtert.-chlorine telechelic PIB has been prepared close to the reflux temperature of methyl chloride.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">Springer Online Journal Archives 1860-2002</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Zsuga, Miklos</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Kennedy, J. P.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">in</subfield><subfield code="t">Polymer bulletin</subfield><subfield code="d">1978</subfield><subfield code="g">21(1989) vom: Jan., Seite 5-12</subfield><subfield code="w">(DE-627)NLEJ188990879</subfield><subfield code="w">(DE-600)1473175-7</subfield><subfield code="x">1436-2449</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:21</subfield><subfield code="g">year:1989</subfield><subfield code="g">month:01</subfield><subfield code="g">pages:5-12</subfield><subfield code="g">extent:8</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1007/BF00700261</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-SOJ</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">21</subfield><subfield code="j">1989</subfield><subfield code="c">1</subfield><subfield code="h">5-12</subfield><subfield code="g">8</subfield></datafield></record></collection>
|
| score |
7.400523 |