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RESEARCH PRODUCT
Mechanism of anionic polymerization of (meth)acrylates in the presence of aluminium alkyls
Helmut SchlaadRalph-peter KrügerHeinz KolshornAxel H. E. Müllersubject
chemistry.chemical_classificationReaction mechanismKetonePolymers and PlasticsSide reactionSolution polymerizationGeneral ChemistryCondensed Matter Physicschemistry.chemical_compoundAnionic addition polymerizationchemistryPolymerizationPolymer chemistryMaterials ChemistryMethyl methacrylateTriisobutylaluminiumdescription
Summary Methyl methacrylate was polymerized with tert-butyl lithium in the presence of triethylaluminum or triisobutylaluminium at -78~ in toluene. As indicated by GPC and MALDI-TOF mass spectrometry, the polymerization is accompanied by side reactions. The lower oligomers were fractionated by distillation and characterised by NMR, FT-IR, UV and electron impact (EI) mass spectrometry. All these data show that part of the polymer chains are carrying exactly one tert-butyl isoprenyl ketone unit. In order to avoid the formation of tert-butyl isoprenyl ketone a molar ratio of A1/Li > 2 is necessary.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-01-01 | Polymer Bulletin |