Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1995-12-04
1998-03-31
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521125, 521130, 528 55, 528 56, 528 57, C08G 1816, C08G 1822
Patent
active
057339457
ABSTRACT:
Nickel acetyl acetonate catalysts used in the manufacture of polyurethanes and particularly polyurathane foam, is replaced with a more environmentally friendly organo-metallic catalyst, specifically other metal acetyl acetonates such as iron or copper. In accordance with an important feature of this invention, in addition to the metal acetyl acetonate, the catalyst system also includes acetyl acetone. The acetyl acetone acts as a delay mechanism to delay the catalytic action of the metal acetyl acetonate which is normally highly catalytic at relatively low temperatures. It will be appreciated that high catalytic activity at relatively low temperature will lead to deleterious premature cure. By adding acetyl acetone into the catalyst system, the acetyl acetone acts to delay and/or slow the catalytic action of the metal acetyl acetonate until the polyurethane is heated at which point the acetyl acetone is driven off and the metal acetyl acetonate then provides a relatively fast cure at the elevated temperature.
REFERENCES:
patent: 2846416 (1958-08-01), Arnold et al.
patent: 2916464 (1959-12-01), Ebneth et al.
patent: 2933462 (1960-04-01), Fischer
patent: 3291660 (1966-12-01), Oberth et al.
patent: 3450648 (1969-06-01), Windemuth et al.
patent: 3580938 (1971-05-01), Kroll
patent: 3634329 (1972-01-01), Chujo et al.
patent: 3635906 (1972-01-01), Jayawant
patent: 3772224 (1973-11-01), Marlin et al.
patent: 3947386 (1976-03-01), Prokai et al.
patent: 4050969 (1977-09-01), Oberth
patent: 4138114 (1979-02-01), Andersen
patent: 4151345 (1979-04-01), Hillegass
patent: 4263423 (1981-04-01), Schwindt et al.
patent: 4598136 (1986-07-01), Wick
patent: 4788170 (1988-11-01), Wengrovius
patent: 4886838 (1989-12-01), Dewhurst
patent: 4886839 (1989-12-01), Dallavia, Jr. et al.
A.E. Oberth et al. Metal Catalysis in Aliphatic Isocyanate-Alcohol Reactions; pp. 383-388--reaction kinetics of metal AA systems, Aug. 1969.
A.E. Obert et al. Polyurethane-Based Propellants; pp. 84-121--use of FeAA system in unrelated field, rocket propellants, Nov. 1968.
Arnold, C., Development and Characterization of EN-7: A Ferric Acethylacetonate Catalyzed Polybutadiene-Based Elastomer; pp. 238-245/Oct. 1974--unrelated field, rocket propellants.
Foster, P. "A Study of Ferric Acetylacetonate and Other Catalysts in the Curing Agent for Adiprene" L-315; PGS. A-1-A-10/ Dec. 1973--use of FeAA system in field of rocket propellants.
Ihms, O. et al., "Effect of Catalysts on the Kinetics of the Water-Toluene Diisocyanate Reactions". pp. 61-65/Mar. 1955--use of FeAA only in polyurethane foams.
Gafuroa, M.P. et al. "Mechanism of Catalysis by Ferric Acetylacetonate of the Reaction Between Isocyanates and Hydroxybuatdiene Oligomers", pp. 1945-1951/1986--reaction of kinetics of FeAA systems.
Foelak Morton
Rogers Corporation
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