Flexible polyurethane foam and process for preparing same

Details Flexible polyurethane foam and process for preparing same Flexible polyurethane foam and process for preparing same

1995-04-20

1995-12-26

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521130, C08G 1802, C08G 1806

Patent

active

054788668

ABSTRACT:
A flexible polyurethane foam which has a low density, enhanced impact resilience, improved compression set and excellent effect on the reduction of 6 Hz vibration transmissibility and is obtained by a reaction of an organic polyisocyanate composition, that is, a mixture of (a) polymethylenepolyphenyl isocyanate containing from more than 60 to 90% by weight of a two benzene ring compound and having a weight ratio [three benzene ring compound]/[four or more benzene ring compounds + less active ingredient] of 1.1-20.0, and (b) tolylene diisocyanate in a ratio (a)/(b) of 97.apprxeq.80/3.apprxeq.20 by weight, or by reaction of a prepolymer derived from said organic polyisocyanate composition and a specific polyol, with a resin premix comprising a water blowing agent and an active hydrogen containing compound; and a process for preparing the flexible polyurethane foam.

REFERENCES:
patent: 5389693 (1995-02-01), DeGenova et al.
patent: 5416125 (1995-05-01), Limen et al.

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