Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-12-01
1995-05-09
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525469, 528196, 528491, 528492, 528485, 528486, 528487, 528488, 528490, 528502, C08F28302
Patent
active
054140579
ABSTRACT:
A process for the redistribution of an organic polycarbonate composition. The process involves melt equilibrating a starting polycarbonate composition (which may be a single polycarbonate or a mixture of polycarbonates, and may be or include recycled polycarbonate) having an initial weight average molecular weight in the presence of a carbonate redistribution catalyst and in the absence of branching agents, under conditions such that a redistributed polycarbonate composition is formed having a weight average molecular weight different from, and typically lower than, the initial weight.
REFERENCES:
patent: 5021521 (1991-06-01), Krabbenhoft et al.
Campbell Allen J.
Dardaris David M.
Evans Thomas L.
Faler Gary R.
McCloskey Patrick J.
General Electric Company
Kight III John
Mosley Terressa M.
Pittman William H.
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