Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1995-08-30
1997-02-18
Gorr, Rachel
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521155, 521917, 264 453, 264 458, 264 50, 3661624, 422135, 425205, C08G 1800
Patent
active
056042671
ABSTRACT:
High quality, consistent polyurethane froth foams, both filled and unfilled, are prepared by directing polyol, isocyanate, and optionally other polyurethane-forming ingredients to a high pressure mix head prior to introducing the mixture to a froth foaming head. Changes in stoichiometry may be made rapidly without shut-down. An in-line blender incorporated filler into the polyol stream minimizing density differentials normally encountered in the holding tank, maintaining low and reproducible viscosity, and allowing for greater amounts of filler than otherwise possible.
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"Methanically Frothed Urethane: A New Process for Controlled Gauge, High Density Foam", L. Marlin et al., J Cell Plas., v. 11, No. 6, Nov./Dec. 1975.
Arco Chemical Technology L.P.
Gorr Rachel
Kozak Dennis M.
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