Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1991-06-21
1992-01-28
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521902, C08J 908
Patent
active
050844857
ABSTRACT:
Rigid foams containing urethane and isocyanurate groups are made by reacting a polyisocyanate with a compound containing at least two isocyanate reactive hydrogen atoms in the presence of an aqueous solution of alkali metal carboxylate in accordance with known techniques. The aqueous alkali metal carboxylate solution has an alkali metal carboxylate content of from about 10 to about 50% by weight. The alkali metal carboxylates are preferably alkali metal acetates such as potassium acetate. This process is carried out at an index above 150. The product foams are particularly useful as insulating materials.
REFERENCES:
patent: 3993608 (1976-11-01), Wells
patent: 4094869 (1978-06-01), Biranowski et al.
patent: 4271273 (1981-06-01), Brianowski et al.
patent: 4393015 (1983-07-01), Kaneda et al.
patent: 4456709 (1984-06-01), Richter et al.
patent: 4579877 (1986-04-01), Goel et al.
patent: 4607064 (1986-08-01), Kuhn et al.
patent: 4661529 (1987-04-01), Kuhn et al.
patent: 4829097 (1989-05-01), Tormala et al.
Heilig Gerhard
Schmitz Wolfgang
Wiedermann Rolf
Bayer Aktiengesellschaft
Foelak Morton
Gil Joseph C.
Whalen Lyndanne M.
LandOfFree
Process for the production of rigid foams containing urethane an does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the production of rigid foams containing urethane an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of rigid foams containing urethane an will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1861289