C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 75/04 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01)
Patent
CA 2172677
This invention relates to a process for preparing a heat-resistant reinforced polyurethane/polyurea foam by (A) preparing, at an isocyanate index of about 100 to about 115, a foamable reaction mixture comprising (a) an organic polyisocyanate; (b) 0 to about 80% by weight, based on the total amount of components (b), (c), and (d), of an isocyanate-reactive compound containing two or more isocyanate-reactive groups and having a number average molecular weight of from 400 to about 10,000; (c) about 10 to about 90% by weight, based on the total amount of components (b), (c), and (d), of an isocyanate- reactive compound containing two or more isocyanate- reactive groups other than amino groups and having a molecular weight of from 32 to 399; and (d) about 5 to about 35% by weight, based on the total amount of components (b), (c), and (d), of certain organic amines containing at least one amino group having a moderated reactivity toward the organic polyisocyanate, as indicated by a gel time exceeding about 5 seconds measured from the material initiation time at 25-40°C, and having a number average molecular weight of from 86 to 400; and (B) introducing foamable reaction mixture (A), while said reaction mixture (A) is still fluid, into a mold containing about 12 to about 35% by weight of a fibrous mat having a weight per unit area of about 225 g/m2 to about 750 g/m2.
Corporation Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
Heat-resistant reinforced foam does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heat-resistant reinforced foam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat-resistant reinforced foam will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1554806