Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1985-11-18
1987-08-11
Pertilla, Theodore E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
525462, 525466, 525467, 525469, 528271, 528272, 5283091, 528354, 528370, 528371, 528405, 528421, 558262, 558266, 558268, C08G 6362
Patent
active
046862730
ABSTRACT:
The invention is a process for modifying and increasing the molecular weight of a poly(alkylene carbonate) polyahl, which comprises contacting the poly(alkylene carbonate) polyahl, with at least one modifier having a plurality of moieties that are reactive with the carbonate and/or acting hydrogen moieties of the poly(alkylene carbonate) polyahl at elevated temperatures and at a pressure at which at least one compound other than a monoalkylene glycol which compound is at least as volatile as a tetraethylene glycol is removed in the gaseous state from the poly(alkylene carbonate) polyahl.
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Pertilla Theodore E.
The Dow Chemical Company
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