Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2005-04-12
2005-04-12
Harlan, Robert D. (Department: 1713)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S159000, C502S162000, C502S167000, C502S175000, C502S200000, C568S613000, C568S618000, C568S620000, C568S623000, C568S624000, C568S625000
Reexamination Certificate
active
06878661
ABSTRACT:
The invention relates to novel double metal cyanide (DMC) catalysts for the preparation of polyether polyols by polyaddition of alkylene oxides to starter compounds containing active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c), and c) complex ligands formed by introduction of a glycidyl ether into the catalyst. The catalysts according to the invention have greatly increased activity in the preparation of polyether polyols.
REFERENCES:
patent: 3404109 (1968-10-01), Milgrom
patent: 3829505 (1974-08-01), Herold
patent: 3941849 (1976-03-01), Herold
patent: 5158922 (1992-10-01), Hinney et al.
patent: 5470813 (1995-11-01), Le-Khac
patent: 5482908 (1996-01-01), Le-Khac
patent: 5545601 (1996-08-01), Le-Khac
patent: 5712216 (1998-01-01), Le-Khac et al.
patent: 5714428 (1998-02-01), Le-Khac
patent: 5856369 (1999-01-01), Jorgenson et al.
patent: 5877268 (1999-03-01), Jorgenson et al.
patent: 6018017 (2000-01-01), Le-Khac
patent: 6323375 (2001-11-01), Hofmann et al.
patent: 6696383 (2004-02-01), Le-Khac et al.
patent: 4145123 (1992-05-01), None
patent: 9740086 (1997-10-01), None
patent: WO 9740086 (1997-10-01), None
Kunststoffhandbuch, vol. 7, Polyurethane, 3rd ed., (month unavailable), pp. 25-32, Dieterich, et al, “Herstellungsmethoden für Polyurethane” and pp. 57-67, Diller et al, “Rohstoffe”.
Ullmann-Encyclopedia of Industrial Chemistry, vol. A9, 5th ed., (month unavailable), 1987, Weinheim/New York, p. 552.
Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 9, 4th ed., (month unavailable), 1994, pp. 739-744.
Ullmanns Encyclopadie der industriellen Chemie, English language ed, (month unavailable), 1992, vol. A21, pp. 670-671, “3.2 Polyols”.
Gupta Pramod
Hofmann Jörg
Ooms Pieter
Schäfer Walter
Bsyer Aktiengesellschaft
Gil Joseph C.
Harlan Robert D.
Mrozinski, Jr. John E.
LandOfFree
Bimetallic-cyanide catalysts used for preparing polyether... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bimetallic-cyanide catalysts used for preparing polyether..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bimetallic-cyanide catalysts used for preparing polyether... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3431423