Preparation of flexible, molded, cold-cure polyurethane foams

Details Preparation of flexible, molded, cold-cure polyurethane foams Preparation of flexible, molded, cold-cure polyurethane foams

1993-02-04

1994-11-29

Acquah, Samuel A.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521160, 521170, 521174, 521177, 521914, 528 59, 528 60, 528 65, 528 66, 528 67, 528 76, 528 85, C08G 1800

Patent

active

053691385

ABSTRACT:
The present invention is directed to a process for the preparation of molded cold-cure polyurethane flexible foams. The process requires the use of aromatic polyisocyanates, a specifed mixture of polyether polyols which have specified ethylene oxide contents and a specified amount of water as blowing agent. The reaction is conducted in a closed mold at an isocyanate index of from 80 to 120.

REFERENCES:
patent: 3857800 (1974-12-01), Fishbein et al.
patent: 3865762 (1975-02-01), Repiquet et al.
patent: 4833176 (1989-05-01), Wolf et al.
patent: 5063253 (1991-11-01), Gansen et al.

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