Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1993-01-19
1993-08-17
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
25218222, 521159, 521160, 521901, 528 67, 528 76, 528 77, 560 25, 560 26, 560334, C08J 000
Patent
active
052369609
ABSTRACT:
The invention relates to water blown integral skin polyurethane foams made with a particular isocyanate quasi-prepolymer and resin side ingredients to yield a foam having good overall mechanical properties. The isocyanate quasi-prepolymer component of the present invention comprises from 0.5 weight percent to 30.0 weight percent or less uretonimine-carbodiimide-modified diphenylmethane diisocyanate, from 50 weight percent to 80 weight percent 4,4'-diphenylmethane diisocyanate and reacted with from 15 weight percent to 40 weight percent of a polyether polyol containing predominately secondary hydroxyl groups and having an average molecular weight from about 2,000 to 10,000, an average functionality from 1.5 to about 3.2, and a hydroxyl number from about 20 to 60, and optionally with a low molecular weight diol in an amount of from 1.0 weight percent to 10 weight percent, the weight percentages based on the weight of the quasi-prepolymer reactants. The resin side component comprises a high molecular weight polyether compound having isocyanate reactive hydrogens and average molecular weights from about 2,000 to about 10,000 and an average functionality from 1.5 to about 3.2, water as a blowing agent in an amount of from 0.25 weight percent to 3 weight percent, an effective amount of polyurethane and/or polyurea promoting catalyst, a surfactant, and a chain extender, and optionally a mono- or di- functional alcohol composition having from 8 to about 30 carbon atoms.
REFERENCES:
Journal of Polymer Science: Polymer Chemistry Edition, vol. 14, 1976, pp. 2043-2059, W. J. Jackson, Jr., et al., "Liquid Crystal Polymers. I. Preparation and Properties of p-Hydroxybenzoic Acid Copolyesters".
Harrison Richard P.
Narayan Thirumurti
Scarpati Michael
Zagata Blair J.
BASF Corporation
Carmen Dennis V.
Foelak Morton
LandOfFree
Water-blown polyurethane integral skin 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 Water-blown polyurethane integral skin foam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-blown polyurethane integral skin foam will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2244054