Fire retardant polypropylene
AssigneeAuckland Uniservices Limited
InventorsAllan James Easteal, Ralph Cooney, Ralph Paul Cooney, Kaluachchl Gamage Karnika De Silva, Debes Bhattacharrya
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Abstract
A fire retardant material comprising preferably at least 60% polypropylene having a flexural modulus of 2.8 GPa or above and a fire retardancy rating of UL-94 V-1 or better. The fire retardant material is preferably halogen and glass-fibre free. It may contain a fire retardant agent (e.g. a polymeric APP-crystal phase II type fire retardant fire retardant) and a filler. Also methods for producing such a fire retardant material.
Claims34
A fire retardant material comprising polypropylene having a flexural modulus of 2.8 GPa or above and a fire retardancy rating of UL-94 V-1 or better.
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A fire retardant material comprising:
- polypropylene 60-80%;
- fire retardant agent 10-30%;
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- talc 5-20%
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A method of forming a fire retardant material comprising:
- forming a first blend of polypropylene and filler;
- combining the first blend with a fire retardant or a second blend of polypropylene and fire retardant;
- and optionally adding polypropylene
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Dependencies are inferred from the claim text.