Combustion-modified flexible polyurethane foam

摘要

A formulation for producing combustion-modified, flexible polyurethane foam comprising:-

1. from 80 to 99 parts by weight (pbw) of one or more polyether polyols having a molecular weight in the range 2000 to 15,000;

2. from 1 to 20 pbw of one or more polyols (to a total of 100 pbw of total polyol) having a molecular weight in the range from 2500 to 5500, an average nominal functionality of at least two, and an ethylene oxide content in the range from 40% to 90%;

3. isocyanate comprising one or more of the following:- toluene diisocyanate, diphenylmethane diisocyanate (MDI) and polymeric MDI;

4. up to 40 pbw of a flame retardant package consisting of one or more flame retardant additives;

5. optionally, one or more surfactants;

6. optionally, one or more catalysts for the reaction of polyol and isocyanate; and

7. water.