Polyolefin dispersions, froths, and foams
AssigneeDow Global Technologies LLC
InventorBruce A. Menning
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Abstract
Polyolefin dispersions, froths, and foams and articles manufactured therefrom are disclosed. Also disclosed is a method for generating a thermoplastic foam from an aqueous dispersion. The aqueous dispersion may include a thermoplastic resin, water, and a stabilizing agent. The method may include adding at least one frothing surfactant to the aqueous dispersion to form a mixture, adding a flame retardant and/or a phase change material, frothing the mixture to create a froth, and removing at least a portion of the water to produce the foam.
Claims29
A method for generating an open-cell flame retardant thermoplastic foam from a stabilized aqueous dispersion, the aqueous dispersion comprising a thermoplastic resin, water, and a dispersion-stabilizing agent, the method comprising:
- adding at least one frothing surfactant to the stabilized aqueous dispersion to form a mixture;
- adding a flame retardant;
- frothing the mixture to create a froth;
- and
- removing at least a portion of the water to produce the open-cell foam;
- wherein the thermoplastic resin comprises an ethylene homopolymer, an ethylene/α-olefin copolymer, or an ethylene/α-olefin multiblock interpolymer, a propylene homopolymer, a propylene/α-olefin copolymer, a propylene/α-olefin multiblock interpolymer, or a combination of two or more thereof.
Dependencies are inferred from the claim text.