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US 2006/0223973 A1Published application
Method of forming a polyethercarbonate polyol
AssigneeBASF SE
InventorsWerner Hinz, Edward Dexheimer, John Broge, Raymond Neff, Theodore Smiecinski
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Abstract
A polyethercarbonate polyol includes polyethercarbonate segments, polycarbonate segments, and polyether segments. A method of forming the polyethercarbonate polyol provides a catalyst, including a multimetal cyanide compound, and reacts an H-functional initiator, an alkylene oxide, and carbon dioxide in the presence of the multimetal cyanide compound to form the polyethercarbonate polyol. Amounts of each segment in the polyethercarbonate polyol are selectively controlled.
Claims37
A method of forming a polyethercarbonate polyol, said method comprising the steps of:
- (A) providing a catalyst comprising a multimetal cyanide compound;
- (B) reacting an H-functional initiator, an alkylene oxide, and carbon dioxide in the presence of the multimetal cyanide compound in a reactor to form the polyethercarbonate polyol comprising the general formula [A]a[B]b[C]c, wherein,
- A is a polyethercarbonate segment, B is a polycarbonate segment, and C is a polyether segment wherein each of A, B, and C are defined by the presence of CH3 group resonances of alkylene oxide-based ether chain units at separate peaks in a 1H NMR spectrum of the polyethercarbonate polyol, and
- a is a value from 1-98, b is a value from 0-60, and c is a value from 0-98 so long as b and c are not both equal to 0,
- with the values for each of a, b, and c in area % based on the presence of the CH3 group resonances in the 1H NMR spectrum and on the integration of the area under the respective peaks that are present in the 1H NMR spectrum;
- and
- (C) selectively controlling the value of a, b, or c.
4 more elements
Dependencies are inferred from the claim text.