Group IVB metal blowing catalyst compositions for the production

Details Group IVB metal blowing catalyst compositions for the production Group IVB metal blowing catalyst compositions for the production

1998-05-28

1999-05-11

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521172, 521174, C08G18/22

Patent

active

059028351

ABSTRACT:
An improved method of preparing polyurethane foam by reacting an organic polyisocyanate with a polyol in the presence of water and a combination of a gelling catalyst and a blowing catalyst, in which the blowing catalyst is a compound represented by the following formulae:
wherein M is titanium, zirconium, or hafnium; n ranges from 1 to 20; and each of L.sup.1, L.sup.2, L.sup.3, and L.sup.4 is the same or different ligand selected from the following groups: (1) oxygen, sulfur and nitrogen; (2) an alcoholate, phenolate, glycolate, thiolate, carboxylate, dithiocarbamate, aminate, aminoalcoholate, phosphate, phosphonate, pyrophosphate, sulfonate, or silylamide any of which contains from 1 to 20 carbon atoms and, optionally, contains one or more functional groups, or oxygen, sulfur, nitrogen, or phosphorus-containing; (3) a chelating ligand, such as, various non-fluorine containing and non-sterically hindered .beta.-diketones, triethanolamine, salicylaldehyde, and salicylamide.

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