کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
171681 458471 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ester interchange reactions catalyzed by tin compounds in reactive processing: NMR contribution via reactions with model compounds
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Ester interchange reactions catalyzed by tin compounds in reactive processing: NMR contribution via reactions with model compounds
چکیده انگلیسی

Interchange reactions involving esters were used in reactive processing with a view to obtaining polymer blends with stabilized morphology. Dibutyltinoxide (DBTO) appeared to be an excellent catalyst for these reactions. In fact, it was shown that the true catalytic entity is a dimeric alkoxy, acyloxy distannoxane entity formed in situ, during processing, by the reaction of the DBTO with the polymer ester groups. This compound was first obtained with model esters and characterized by multinuclear NMR analysis (1H, 13C, 119Sn). The catalytic efficiency of the in situ polymeric distannoxane was compared with other added parent distannoxanes. Later on – still with model compounds – ligand exchanges at the tin sites were investigated and it was shown that these exchanges are not essential to the catalyst activity, but when they take place it increases the catalytic efficiency. Then, this type of catalysis was successfully used for interchange reactions in reactive extrusion of different polymer blends, some applications are briefly presented. To cite this article: M.-F. Llauro and A. Michel, C. R. Chimie 9 (2006).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Comptes Rendus Chimie - Volume 9, Issues 11–12, November–December 2006, Pages 1363–1369
نویسندگان
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