Dispersion polyols for hypersoft polyurethane foam

Details Dispersion polyols for hypersoft polyurethane foam Dispersion polyols for hypersoft polyurethane foam

1998-07-13

2000-05-16

Cooney, Jr., John M.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

25218227, C09K 302

Patent

active

060633093

ABSTRACT:
Dispersion polyols which are liquid--liquid dispersions containing a first polyol having a substantially polyoxypropylene internal block having an equivalent weight in excess of about 700 Da and a high oxyethylene-content external block, and a second polyol which is a substantially polyoxyethylene polyol containing minimally 50 weight percent oxyethylene moieties. The dispersion polyols are stable and exhibit broad processing latitude when preparing hypersoft polyurethane foams. The dispersion polyols are advantageously prepared in situ, preferably in the presence of a double metal cyanide oxyalkylation catalyst.

REFERENCES:
patent: 3865762 (1975-02-01), Repiquet et al.
patent: 4143004 (1979-03-01), Stromblad et al.
patent: 5420170 (1995-05-01), Lutter et al.
patent: 5596059 (1997-01-01), Hager et al.
patent: 5648019 (1997-07-01), White, III et al.
patent: 5811829 (1998-09-01), Lawrey et al.

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