Preparation of polyether polyols containing aromatics

Details Preparation of polyether polyols containing aromatics Preparation of polyether polyols containing aromatics

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.

REFERENCES:
patent: 4209609 (1980-06-01), Haas
patent: 4391728 (1983-07-01), Korczak et al.
patent: 4562290 (1985-12-01), Korczak et al.
patent: 4767795 (1988-08-01), Adam et al.
patent: 5030758 (1991-07-01), Dietrich et al.
EPO Search Report dated Jun. 4, 1997; English Translation of Same EPO Report.
J.R. Epperson et al., Bioorganic & Medicinal Chemistry Letters, vol. 3, No. 12, pp. 2801-2804, 1993.

Affiliated with

Also associated with

Rating

Preparation of polyether polyols containing aromatics does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of polyether polyols containing aromatics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of polyether polyols containing aromatics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2248368