Process for rapid cooling of polyurethane foam

Details Process for rapid cooling of polyurethane foam Process for rapid cooling of polyurethane foam

1991-03-22

1992-07-07

Nutter, Nathan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521918, C08J 922, C08J 936

Patent

active

051283794

ABSTRACT:
An improved process for rapidly cooling hot freshly polymerized foam is provided by passage of a fluid coolant stream having a water vapor content which initially is in the range from slightly below to above the dew point. In preferred embodiments the cooling fluid stream is recirculated, and auxiliary blowing agents and gaseous reaction products are removed and recovered.

REFERENCES:
patent: 3061885 (1962-11-01), Rogers et al.
patent: 3890414 (1975-06-01), Ricciardi et al.
patent: 4537912 (1985-08-01), Griswold
patent: 4649162 (1987-03-01), Roche et al.
patent: 4764536 (1988-04-01), Proksa et al.

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