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 add
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.
대표청구항▼
1. A stabilized aqueous dispersion comprising: a) a thermoplastic resin;b) at least one dispersion-stabilizing agent;c) at least one flame retardant; andd) water,wherein the thermoplastic resin comprises an ethylene homopolymer, an ethylene/α-olefin copolymer, or an ethylene/α-olefin multiblock inte
1. A stabilized aqueous dispersion comprising: a) a thermoplastic resin;b) at least one dispersion-stabilizing agent;c) at least one flame retardant; andd) water,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, or a propylene/α-olefin multiblock interpolymer; or combinations thereof. 2. The aqueous dispersion of claim 1, wherein the flame retardant comprises at least one selected from an inorganic salt, an intumescent, a halogenated compound, a phosphate compound, a borate compound, a melamine compound, and combinations thereof. 3. The aqueous dispersion of claim 1, wherein the at least one flame retardant comprises from about 5 to 70% of a total weight of the thermoplastic resin, the at least one stabilizing agent, and the at least one flame retardant. 4. The aqueous dispersion of claim 1, further comprising at least one phase change material. 5. An aqueous froth, comprising: a) a thermoplastic resin comprising an ethylene homopolymer, an ethylene/α-olefin copolymer, or an ethylene/α-olefin multiblock interpolymer; a polypropylene homopolymer, a propylene/α-olefin copolymer, or a propylene/α-olefin multiblock interpolymer; or combinations thereof;b) water;c) a frothing surfactant comprising at least one of alkylcellulose ethers, hydroxyalkyl cellulose ethers, hydroxyalkyl alkylcellulose ethers, guar gum, xanthan gum, and polyoxyethylene resins of at least 20,000 molecular weight;d) a gas;e) at least one flame retardant comprising at least one selected from an inorganic salt, an intumescent, a halogenated compound, a phosphate compound, a borate compound, a melamine compound, and combinations thereof; andf) a dispersion-stabilizing agent;wherein the froth comprises from about 15 to 75 weight percent component (a), from about 25 to 75 weight percent component (b), from about 0.1 to 10 percent component (c), from about 5 to 50 weight percent component (e), and wherein (d) is present in an amount such that (d) comprises at least 10 percent of the total volume of all components present in the froth; andwherein the at least one flame retardant comprises from about 5 to 70% of a total weight of the thermoplastic resin, the at least one stabilizing agent and the at least one flame retardant. 6. The froth of claim 5, wherein the frothing surfactant is present in an amount of from about 0.05 to about 10 weight percent based on the dry weight of component (a). 7. The froth of claim 5, further comprising at least one of a phase change material and a fibril or fiber-like material. 8. The froth of claim 5, wherein the inorganic salt comprises at least one selected from aluminum hydroxide and magnesium hydroxide. 9. The froth of claim 5, wherein the froth has a density ranging from 0.04 to 0.45 g/cm3 on a wet basis. 10. A stabilized aqueous dispersion comprising: a) a thermoplastic resin;b) at least one dispersion-stabilizing agent;c) at least one phase change material; andd) water,wherein the thermoplastic resin comprises an ethylene homopolymer, an ethylene/α-olefin copolymer, or an ethylene/α-olefin multiblock interpolymer; a polypropylene homopolymer, a propylene/α-olefin copolymer, or a propylene/α-olefin multiblock interpolymer; or combinations thereof. 11. An aqueous froth, comprising a) a thermoplastic resin;b) water;c) a frothing surfactant;d) a gas;e) at least one phase change material; andf) a dispersion-stabilizing agent;wherein the thermoplastic resin comprises an ethylene homopolymer, an ethylene/α-olefin copolymer, or an ethylene/α-olefin multiblock interpolymer; a polypropylene homopolymer, a propylene/α-olefin copolymer, or a propylene/α-olefin multiblock interpolymer; or combinations thereof. 12. The froth of claim 11, wherein the froth comprises from about 15 to 75 weight percent component (a), from about 25 to 75 weight percent component (b), from about 0.1 to 10 weight percent component (c), from about 5 to 50 weight percent component (e), and wherein (d) is present in an amount such that (d) comprises at least 30 percent of the total volume of all components present in the froth. 13. The froth of claim 11, wherein the at least one phase change material comprises from about 5 to 70% of a total weight of the thermoplastic resin, the at least one stabilizing agent, and the at least one phase change material. 14. The froth of claim 11, wherein the phase change material comprises at least one selected from a microencapsulated wax, fatty acid or ester, paraffin, salt hydrides, and combinations thereof. 15. The aqueous dispersion of claim 10, wherein the at least one phase change material comprises at least one selected from a microencapsulated wax, fatty acid or ester, paraffin, salt hydrides, and combinations thereof. 16. The aqueous dispersion of claim 10, wherein the at least one phase change material comprises from 5 to 70% of a total weight of the thermoplastic resin, the at least one stabilizing agent, and the at least one phase change material. 17. The aqueous dispersion of claim 10, further comprising at least one flame retardant. 18. The aqueous dispersion of claim 17, wherein the flame retardant comprises at least one selected from an inorganic salt, an intumescent, a halogenated compound, a phosphate compound, a borate compound, a melamine compound, and combinations thereof.
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