Polymerisation Processes Polymerisation Processes Polyethylene ...

PMMA – weak links
From combination
O
O O
O
O
O
From disproportionation
Comonomers stop unzipping
O
O
Dr. Klaus-Dieter Hungenberg, BASF AG Ludwigshafen Vorlesung Polymerisationstechnik, Universität Paderborn, WS 07/08 Polymer processes
2
C*
O
CH 3
O
+ CH2 *
C*
O
CH 3
O
O
Starting point for depolymerization
MMMMMMMMMMMMMMMMMXMMMMMM* MMMMMMMMMMMMMMMMMX* + M
PMMA – process for plates and sheets
Dr. Klaus-Dieter Hungenberg, BASF AG Ludwigshafen Vorlesung Polymerisationstechnik, Universität Paderborn, WS 07/08 Polymer processes
O
65
67
PMMA – continuous bulk process
Dr. Klaus-Dieter Hungenberg, BASF AG Ludwigshafen Vorlesung Polymerisationstechnik, Universität Paderborn, WS 07/08 Polymer processes
PVC – suspension process
⎛ ⎞
1 ln⎜ p
⎟ = ln( 1−
Φ
0
2)
+ Φ2
+ χΦ
⎜ ⎟
⎝ p1
⎠
χ=0.98
s = kH
2
2
p
0
p
p=const- =
separate monomer phase
Dr. Klaus-Dieter Hungenberg, BASF AG Ludwigshafen Vorlesung Polymerisationstechnik, Universität Paderborn, WS 07/08 Polymer processes
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