Addition of silylated BuCA as co-catalyst was less favorable than addition of free BuCA.doi:10.1007/s10924-019-01545-5Hans R. KricheldorfSteffen M. WeidnerSpringer NatureJournal of Polymers and the Environment
the effects of different alcohols (primary, secondary, and two different tertiary alcohols) as initiators on the structure of polycaprolactone (PCL) in ring-opening polymerization (ROP), four experiments were conducted in toluene with tin(II) 2-ethylhexanoate (Sn(Oct)(2)) as the catalyst. The...
A new mild and efficient tin and titanium based catalyst combination have been explored for the synthesis of high molecular weight poly(butylene succinate). The new catalyst system is found to be more efficient and hydrolytically—as well as thermally—stable even at 250°C. Additionally, this ...
Tailoring the degradation rate of poly(-caprolactone) (PCL) was found to be easily accomplished by the polymerization of -caprolactone using a Sn(Oct)2/BF3 dual catalyst. The resulting PCL contained BF3, which acts as a hydrolytic degradation catalyst for PCL. The degradation rate of the ...
We report on the synthesis of cooligomers from sec -butyl-morpholine-2,5-dione (SBMD) and para -dioxanone (PDX) by ROP with varied feed ratios in the bulk using the catalyst complex SnOct 2 /2-hydroxyethyl sulfide. M n of the cooligomers (determined by GPC) decreased with decreasing ...
as a catalyst. Polymerization was conducted in bulk (120–160°C) with high yield. Effects of temperature, reaction time, and CHOL dosage on the polymerization process were examined. Structure of products was characterized by means of MALDI-TOF, IR, and NMR.doi:10.1007/s00289-011-0676-8...
Two series of polymerizations were performed with BuSnCl3 as catalyst, so that either the time was varied at constant monomer/initiator (M/I) ratio, or the M/I ratio at constant time. Two analogous series were conducted with SnOct2 With both catalysts high yields but only moderate molecular...