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US 9,850,360 B2Granted
Hybrid foam
AssigneeBASF SE
InventorsFrank Prissok, Steffen Mayer, Tanja Aepker, Maike Grever, Daniela Kranzusch, Marlene Niemann, Florian Felix
Life of this patent
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Abstract
The invention relates to highly elastic polyurethane foams which are suitable as functional materials having thermally insulating properties.
Claims15
An elastic hybrid foam, comprising:
- a) at least one thermoplastic polyurethane having Shore A hardness of 20 to 70;
- b) at least one hollow polymer body having a TMA density of 2-10 kg/m3;
- c) optionally at least one additional physical blowing agent, chemical blowing agent, or both;
- and
- d) optionally, at least one auxiliary and at least one additive,
- wherein the hybrid foam is at least monoaxially stretched,
- wherein said hybrid foam is has a substantially closed-celled structure, and
- wherein said hybrid foam has a stress at 100% elongation of less than 0.25 MPa and at 200% elongation of less than 0.35 MPa.
5 more elements
An elastic hybrid foam, comprising:
- a) at least one thermoplastic polyurethane having Shore A hardness of 20 to 70;
- b) at least one hollow polymer body having a TMA density of 2-10 kg/m3;
- c) optionally additional physical blowing agent, chemical blowing agent, or both;
- and
- d) optionally, at least one auxiliary, at least one additive, or both,
- wherein the at least one hollow polymer body is neither physically nor chemically bound to the surrounding thermoplastic polyurethane,
- wherein said hybrid foam is has a substantially closed-celled structure, and
- wherein said hybrid foam has a stress at 100% elongation of less than 0.25 MPa and at 200% elongation of less than 0.35 MPa.
5 more elements
Dependencies are inferred from the claim text.