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US 2024/0191075 A1Published application
Flame retardant polyamide compositions
AssigneeAscend Performance Materials Operations LLC
InventorKimberly M. White
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Abstract
A flame retardant polyamide composition comprising a synergistic combination of an epoxy-terminated brominated epoxy polymer with a tribromophenol end-capped brominated epoxy polymer. The polyamide compositions have excellent resistance to heat and good elongation-at-break properties without the presence of decabromodiphenyl ethane.
Claims26
A flame retardant polyamide composition comprising:
- from 50 wt % to 75 wt % of a polyamide;
- less than 18 wt % of a decabromodiphenyl ethane (DBDPE) flame retardant;
- from 12.1 wt % to 15.9 wt % of an epoxy-terminated brominated epoxy polymer;
- from 8.1 wt % to 11.9 wt % of a tribromophenol end-capped brominated epoxy polymer;
- and
- either (a) from 1 wt % to 10 wt % of two or more plasticizers, or (b) from 1 wt % to 5% of one or more plasticizers and from 1 wt % to 5 wt % of one or more flame retardant synergists;
- wherein the polyamide composition demonstrates an elongation of break of at least 9%, and
- wherein the polyamide composition demonstrates a UL-94 rating of V-2 or better.
5 more elements
The flame retardant polyamide of claim 24, wherein the COOH:NH2 ratio of the modified polyamide is 1.8 or greater.
A flame retardant polyamide composition comprising:
- from 50 wt % to 75 wt % of a polyamide;
- from 13 wt % to 15 wt % of an epoxy-terminated brominated epoxy polymer;
- from 9 wt % to 11 wt % of a tribromophenol end-capped brominated epoxy polymer;
- and
- from 1 wt % to 5 wt % of two or more plasticizers;
- wherein the composition is free of a decabromodiphenyl ethane (DBDPE) flame retardant,
- wherein the polyamide composition demonstrates an elongation of break of at least 9.5%, and
- wherein the polyamide composition demonstrates a UL-94 rating of V-0 or better.
5 more elements
Dependencies are inferred from the claim text.