Polyether polyols based on aromatic diamines and polyamines, a p

Details Polyether polyols based on aromatic diamines and polyamines, a p Polyether polyols based on aromatic diamines and polyamines, a p

1989-08-15

1992-08-25

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

564399, 564443, C08G 1814

Patent

active

051419688

ABSTRACT:
The present invention relates to polyether polyols having OH numbers of about 300 to 630 obtained by sequentially reacting 2,4- and/or 2,6-tolylenediamine or mixtures of 2,4-and/or 2,6-tolylenediamine and one or more other aromatic amines with from about 1 to 2.5 moles of ethylene oxide for each NH.sub.2 group, and then with from about 0.5 to 5 moles of propylene oxide for each NH.sub.2 group, wherein said polyether polyols contain secondary amino groups comprising from about 2 to 20% of the isocyanate-reactive groups in said polyols and a free aromatic amine content of less than about 0.2% by weight. The present invention further relates to a process for preparing the polyether polyols of the invention, as well as to a method of using the polyether polyols for the preparation of polyurethane plastics.

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JP 58134108 Abstract Only.

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