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US 10,689,516 B2Granted
Polymer jacket material blends with improved flame resistance
AssigneeOtis Elevator Company
InventorsPaul Papas, Georgios S. Zafiris, Brad Guilani
Life of this patent
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Abstract
A fire-resistant material according to an example of the present disclosure includes a base material and at least one of a siloxane polymer and a phosphonate polymer. A method of making a fire-resistant material is also disclosed.
Claims20
A fire-resistant material, comprising:
- a base material, a siloxane polymer, and a phosphonate polymer, wherein the siloxane polymer comprises between about 1% and 20% by weight of the fire-resistant material and the phosphonate polymer comprises between about 1% and about 20% by weight of the fire-resistant material.
A belt, comprising:
- at least one tension member;
- and
- a jacket at least partially covering the at least one tension member, the jacket comprising a fire-resistant material including a base material, a siloxane polymer, and a phosphonate-based additive, wherein the siloxane polymer comprises between about 1% and about 20% by weight of the fire-resistant material and the phosphonate polymer comprises between about 1% and about 20% by weight of the fire-resistant material.
A method of making a fire-resistant article, comprising:
- combining a base material with a siloxane polymer and a phosphonate polymer in extrusion equipment to form a mixture, wherein the siloxane polymer comprises between about 1% and about 20% by weight of the mixture and the phosphate polymer comprises between about 1% and about 20% by weight of the mixture;
- and
- extruding the mixture to form a fire-resistant article.
Dependencies are inferred from the claim text.