Foaming additives
AssigneePhillips Plastics Corporation
InventorJeffrey Cernohous
Life of this patent
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Abstract
An additive may be used to foam and/or otherwise alter the physical properties of a polymeric material. In particular, a foaming additive may be used to foam a polymeric composite material. The foaming additive may include a blowing agent and a surfactant. The surfactant may be an amphiphilic block copolymer.
Claims47
A foaming additive comprising:
- a blowing agent;
- and
- an amphiphilic polymer having a nonionic hydrophilic segment.
A foaming additive comprising:
- a blowing agent;
- and
- an amphiphilic block copolymer.
A foaming additive comprising:
- a polymeric carrier;
- one or more carbonate salts;
- an amphiphilic block copolymer.
A method of producing a foamed composite material comprising:
- mixing a foaming additive, a filler, and a first thermoplastic polymeric component to provide a first blend;
- activating the blowing agent to provide a foamed blend;
- wherein the foaming additive includes a blowing agent and an amphiphilic block copolymer.
A method of producing a foamed composite material comprising:
- heating a first blend that includes a filler, a blowing agent, an amphiphilic block copolymer, and a thermoplastic polymeric component at a temperature sufficient to form a foamed blend.
A foaming additive comprising:
- a hydrophilic blowing agent;
- and
- a hydrophilic dispersion aid;
- wherein a weight ratio of the hydrophilic blowing agent to the hydrophilic dispersion aid is about 0.6 to 10.
A foaming additive comprising:
- a compatibilizer;
- a hydrophilic blowing agent;
- and
- a hydrophilic dispersion aid.
A melt processable composition comprising:
- a blowing agent;
- and
- a polyolefin having a molecular weight of at least about 500,000 and/or a fluoropolymer.
A foamed composite material comprising:
- at least about 60 wt % filler;
- and
- a thermoplastic polymeric component;
- wherein the foamed composite material has a density of no more than 0.7 g/cm3 and a flexural modulus of at least about 600 MPa.
Dependencies are inferred from the claim text.