Preparation of polyurethane foam without a tertiary amine cataly

Details Preparation of polyurethane foam without a tertiary amine cataly Preparation of polyurethane foam without a tertiary amine cataly

1993-09-07

1994-05-03

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521118, 521164, 521167, C08G 1814

Patent

active

053088824

ABSTRACT:
This invention is a molded flexible polyurethane foam containing acid-modified polyoxypropyleneamine comprising a polyol, a polyisocyanate, water, and a crosslinker/catalyst of the formulae: ##STR1## where R' is an alkylene radical having from about 2 to 4 carbon atoms, R" is H or OH and R is H or from about 1 to 6 carbon atoms wherein said compound is present in an amount ranging from about 0.05 to 2.00 weight percent based on the combined weight of the polyol and polyisocyanate and wherein the sole blowing agent is CO.sub.2 resulting from the reaction of the water and the isocyanate or wherein auxiliary blowing agents may also be included and are selected from the group consisting of halogenated low-boiling hydrocarbons (e.g. trichloromono-fluoromethane and dichloromethane), carbon dioxide, and nitrogen or mixtures thereof.
This invention is also a method of preparing a flexible polyurethane product wherein a polyol, a polyisocyanate and water are reacted in a closable mold or are free rising, wherein the improvement comprises incorporating in the reaction a compound of the formulae as shown above.

REFERENCES:
patent: 4282330 (1981-08-01), Austin

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