Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-06-27
2006-06-27
Richter, Johann (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
07067654
ABSTRACT:
The invention relates to the use of cycloalkylphosphines as catalysts for isocyanate dimerization and to a process for preparing polyisocyanates containing uretdione groups.
REFERENCES:
patent: 3394111 (1968-07-01), Liebsch
patent: 3645979 (1972-02-01), Liebsch et al.
patent: 3993641 (1976-11-01), Tiemann et al.
patent: 4476054 (1984-10-01), Disteldorf et al.
patent: 4614785 (1986-09-01), Richter et al.
patent: 4668780 (1987-05-01), Disteldorf et al.
patent: 4912210 (1990-03-01), Disteldorf et al.
patent: 4929724 (1990-05-01), Engbert et al.
patent: 5066436 (1991-11-01), Komen et al.
patent: 5143994 (1992-09-01), Laas et al.
patent: 5315004 (1994-05-01), Goldstein et al.
patent: 5750629 (1998-05-01), Laas et al.
patent: 1 934 763 (1971-01-01), None
patent: 1153815 (1969-05-01), None
patent: 1 244 416 (1971-09-01), None
Halpaap Reinhard
Hecking Andreas
Laas Hans-Josef
Richter Frank
Bayer MaterialScience AG
Gil Joseph C.
Nwaonicha Chukwuma
Richter Johann
LandOfFree
Preparation of polyisocyanates containing uretdione groups 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 polyisocyanates containing uretdione groups, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of polyisocyanates containing uretdione groups will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3700293