Fine-celled plastic foam containing fluorochemical blowing agent
AssigneeMinnesota Mining and Manufacturing Company
InventorsRudolf J. Dams, Richard M. Flynn, Koen Focquet, John G. Owens
Life of this patent
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Abstract
A blowing agent emulsion comprising a blowing agent mixture, such that the mixture comprises (1) one or more low boiling, hydrochlorocarbons, (2) one or more low boiling chlorine-free perfluorinated compound, and (3) optionally, one or more low boiling, hydrochlorofluorocarbons, one or more low boiling, hydrofluorocarbons, one or more low boiling hydrocarbons, or mixtures thereof; a foamable polymerizable reaction mixture, and a fluorochemical surfactant, optionally, a silicone surfactant, and a catalyst; a foamed plastic; and a process for making thereof.
Claims12
A blowing agent emulsion comprising:
- (a) at least one high molecular weight compound with at least two reactive hydrogen atoms,
- (b) blowing agent mixture, wherein said mixture comprises
- (1) one or more low boiling, hydrochlorocarbon, and
- (2) one or more low boiling, chlorine-free perfluorinated compound, and
- (c) fluorochemical surfactant.
A blowing agent emulsion comprising trifluorodichloroethane, perfluoro N-methylmorpholine and a fluorosurfactant.
A blowing agent emulsion comprising 1,1,2,2-tetrafluorocyclobutane, perfluoro N-methylmorpholine and a fluorosurfactant.
Dependencies are inferred from the claim text.