Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1996-06-07
1999-04-20
Cooney, Jr., John M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
521174, 528 79, 528421, 564443, 568700, 568704, 568705, 568715, 568811, 25218224, 25218226, 25218227, C07C 8902
Patent
active
058958240
ABSTRACT:
In a process for preparing polyether polyols containing aromatics by molecular addition of alkylene oxides to H-functional initiators at from 70.degree. C. to 135.degree. C. and pressures of from 0.1 MPa to 1.0 MPa, the alkoxylation is carried out using at least one initiator comprising at least 95% by weight of 2,3 and 3,4 isomers of tolylenediamine, from 0.5 to 4% by weight of 2,4 and 2,6 isomers of tolylenediamine and from 0.1 to 1.5% by weight of more volatile fractions from tolylenediamine production. The polyether polyols prepared by this process can be used as component of a polyol mixture for producing rigid polyurethane foams.
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Dinsch Stefan
Guettes Bernd
Pretzsch Regina
Steinchen Karl-Heinz
Winkler Juergen
BASF - Aktiengesellschaft
Borrego Fernando A.
Cooney Jr. John M.
Drake James J.
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