Double metal cyanide complex catalysts

Details Double metal cyanide complex catalysts Double metal cyanide complex catalysts

1995-06-07

1998-03-24

Wood, Elizabeth D.

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

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

528403, 528412, 528414, 528415, 528419, 528421, 528405, 525403, 525409, 502175, 502200, C08G 5968, C08G 6532

Patent

active

057314071

ABSTRACT:
Improved double metal cyanide catalysts are disclosed. The substantially amorphous catalysts of the invention are more active for polymerizing epoxides than conventional DMC catalysts, which have a substantial crystalline component. Polyol products made with the catalysts are unusually clear, have exceptionally low unsaturations, and contain no detectable amount of low molecular weight polyol impurities. A method of making the improved DMC catalysts, which involves intimately combining the reactants, is also disclosed.

REFERENCES:
patent: 3278457 (1966-10-01), Milgrom
patent: 3278458 (1966-10-01), Belner
patent: 3278459 (1966-10-01), Herold
patent: 3404109 (1968-10-01), Milgrom
patent: 3427256 (1969-02-01), Milgrom
patent: 3427334 (1969-02-01), Herold
patent: 3427335 (1969-02-01), Herold
patent: 3538043 (1970-11-01), Herold
patent: 3900518 (1975-08-01), Milgrom
patent: 3941849 (1976-03-01), Herold
patent: 4309311 (1982-01-01), Johnson et al.
patent: 4355188 (1982-10-01), Herold et al.
patent: 4436946 (1984-03-01), Smutny
patent: 4472560 (1984-09-01), Kuyper et al.
patent: 4477589 (1984-10-01), van der Hulst et al.
patent: 4721818 (1988-01-01), Harper et al.
patent: 4843054 (1989-06-01), Harper
patent: 4877906 (1989-10-01), Harper
patent: 4979988 (1990-12-01), Iacovangelo
patent: 4987271 (1991-01-01), Watabe et al.
patent: 5010047 (1991-04-01), Schucradt
patent: 5099075 (1992-03-01), Katz et al.
patent: 5144093 (1992-09-01), Reisch et al.
patent: 5145883 (1992-09-01), Saito et al.
patent: 5158922 (1992-10-01), Hinney et al.
patent: 5223583 (1993-06-01), Higuchi et al.
patent: 5470813 (1995-11-01), Le-Khac
C.P. Smith et al. J.Elast. Plast. 24 (1992) 306.
R. Mascioli, SPI Proceedings 32nd Annual, "Polyurethane Tech. /Market Conf." (1989) 139.
Chemical Abstract CA 116:130958t (1992).
D.F. Mullica et al. Acta Cryst. B 34 (1978) 3558.
J. Schuchardt et al. SPI Proceeding, 32nd Annual, "Polyurethane Tech./Market Conf." (1989) 360.

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