Diphenylmethane diisocyanate-based liquid polyisocyanate mixture

Details Diphenylmethane diisocyanate-based liquid polyisocyanate mixture Diphenylmethane diisocyanate-based liquid polyisocyanate mixture

1983-10-21

1984-10-23

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

260453AR, 260453AM, 260453SP, 521159, 521161, 528 44, 528 67, C08G 1814, C08G 1870, C07C143828

Patent

active

044789602

ABSTRACT:
Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups and having an isocyanate content of from 12 to 30 percent by weight are obtained by reaction of a polyoxypropylene polyoxyethylene polyol containing 5 to 30 percent by weight of oxyethylene with diphenylmethane diisocyanate-based isocyanates. These polyisocyanate mixtures are storage stable at low temperature and yield flexible polyurethane foams having improved mechanical properties.

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