C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
403/35
C08G 18/32 (2006.01) C08G 18/18 (2006.01) C08G 18/66 (2006.01)
Patent
CA 1148699
PROCESS FOR PREPARING A MICROCELLULAR POLYURETHANE FOAM WITH IMPROVED GREEN STRENGTH ABSTRACT OF THE INVENTION There is provided a process for preparing a micro- cellular foam with improved green strength properties comprising the step of reacting an organic polyisocyanate with polyalkylene ether polyol and from 1 to about 35 parts (by weight, per hundred parts of said polyol) of a chain extender in the presence of from about 0.1 to about 10.0 parts (by weight, per hundred parts of said polyol) of a compound selected from the group consisting of: Image and Image wherein: a) said polyol has an average functionality of from about 2 to about 8 and an average equivalent weight of from about 1000 to about 2700, and from about 0.8 to about 1.2 equivalents of said polyol are reacted per equivalent of isocyanate; b) said polyurethane foam has an NCO index of from about 80 to about 130; c) R is a divalent alkylene radical containing from about 1 to about 4 carbon atoms; and d) R1, R2, R3, and R4 are independently selected from the group consisting of hydroxyalkyl containing from about 1 to about 4 carbon atoms and from about 1 to about 2 hydroxyl groups.
376269
Basf Wyandotte Corporation
Robic Robic & Associes/associates
LandOfFree
Process for preparing a microcellular urethane foam with... 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 preparing a microcellular urethane foam with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing a microcellular urethane foam with... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1054968