C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
403/50
C08G 18/72 (2006.01) C08G 18/18 (2006.01) C08J 9/00 (2006.01)
Patent
CA 1063299
HIGHLY FILLED POLYUREA FOAMS ABSTRACT OF THE DISCLOSURE The instant invention relates to hydrophobic inorganic-organic lightweight foams produced from aqueous suspensions of finely divided water-insoluble inorganic materials and polyisocyanates. More particularly, the invention relates to a process for the production of highly filled, hydrophobic, lightweight polyurea foams comprising reacting (a) liquid, water/soluble polyisocyanates free from ionic groups, having viscosities of more than 200 cP at 25°C and having isocyanate functionalities of greater than 2.1, with (b) an aqueous suspension of inorganic filler, said suspension having a solids content of from 30 to 80 percent by weight and having a pH value of above 8, at least 50 percent by weight of the suspended fillers having a particle size of less than 50 microns, (c) in the presence of a foam stabilizer of the polyether tertiary polysiloxane type and in the presence of a tertiary amine catalyst, the weight ratio of components (b) to component (a) being better 1:2 and 6:1.
252412
Dieterich Dieter
Markusch Peter
Aktiengesellschaft Bayer
Na
LandOfFree
Highly filled polyurea foams does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Highly filled polyurea foams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Highly filled polyurea foams will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1017564