Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From heterocyclic reactant containing as ring atoms oxygen,...
Patent
1989-08-21
1990-10-09
Nielsen, Earl
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From heterocyclic reactant containing as ring atoms oxygen,...
528410, 528412, 528415, 528416, C08G 6510
Patent
active
049622811
ABSTRACT:
Stereoregular, crystalline, isotactic poly(propylene oxide) is prepared using an effective concentration of a hydrotalcite type catalyst in a process conducted above a temperature of about 100.degree. C. and below about 130.degree. C.
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Nielsen Earl
Ruhr Paula Sanders
The Dow Chemical Company
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