Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From heterocyclic reactant containing as ring atoms oxygen,...
Patent
1997-08-25
1998-12-29
Cain, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From heterocyclic reactant containing as ring atoms oxygen,...
528405, 528409, 528417, 528419, 528421, C08G 5900
Patent
active
058543864
ABSTRACT:
Unique, well defined polyethers containing both hydroxyl-functionality and unsaturation-functionality are prepared by oxyalkylating an unsaturated monomer having at least one oxyalkylatable hydrogen in the presence of an effective amount of a double metal cyanide complex catalyst, optionally, when necessary, in the presence of a free radical polymerization inhibitor. The resulting polyethers are eminently suitable for such uses as polymer polyol stabilizers or stabilizer precursors, and both in situ and ex situ impact modifiers for thermoplastics.
REFERENCES:
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patent: 4472560 (1984-09-01), Kuyper et al.
patent: 5196476 (1993-03-01), Simroth
Hayes John E.
Hinney Harry R.
Holeschovsky Uli B.
McDaniel Kenneth G.
Shen Jianzhong
Arco Chemical Technology L.P.
Cain Edward J.
Schuchardt Jonathan L.
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