Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1991-01-11
1993-06-15
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521160, 521173, 521176, 264241, 264257, C08G 1818, C08G 1842, C08J 908, B29C 5102
Patent
active
052198936
ABSTRACT:
Open-celled, cold-formable polyurethane foams are made by reacting a specific crude MDI with a polyol component which includes hydroxyl polyethers having an OH number of from about 28 to about 600, a difunctional phthalic acid hydroxyl polyester having an OH number of from about 150 to about 440, glycerol, a blowing agent (water is preferred), a tertiary amine catalyst and optionally a silicone foam stabilizer. These foams generally have a density of from about 23 to about 30 kg/m.sup.3 and may be molded into articles having intricate shapes (e.g., roof for automobiles) using known cold-forming techniques.
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Konig Eberhard
Weber Christian
Bayer Aktiengesellschaft
Gil Joseph C.
Kight III John
Sergent Rabon
Whalen Lyndanne M.
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