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US 2020/0048434 A1Published application
Flame-retardant polyamides
AssigneeBASF SE
InventorsMichael Roth, Christoph Minges, Klaus Uske, Michaela Heussler
Life of this patent
Estimating the term…
Abstract
Thermoplastic molding compositions containing A) from 30 to 97% by weight of at least one polyamide, B) from 1 to 20% by weight of a melamine compound, C) from 1 to 50% by weight of a mineral filler composed of a mixture of (crypto)crystalline silica (C1) and amorphous silica (C2) and of calcined kaolin (C3), D) from 0 to 20% by weight of a fibrous filler, E) from 0 to 25% by weight of talc powder, F) from 0 to 15% by weight of other additives, where the total of the percentages by weight of A) to F) is 100%.
Claims11
A thermoplastic molding composition comprising
- A) from 30 to 97% by weight of at least one polyamide,
- B) from 1 to 20% by weight of a melamine compound,
- C) from 1 to 50% by weight of a mineral filler comprising a mixture of (crypto)crystalline silica (C1) and amorphous silica (C2) and of calcined kaolin (C3),
- D) from 0 to 20% by weight of a fibrous filler,
- E) from 0 to 25% by weight of talc powder,
- F) from 0 to 15% by weight of other additives,
- comprising as mineral filler C) a mixture of from 45 to 70% by weight of C1 with from 5 to 15% by weight of C2 and from 20 to 40% by weight of C3, based on 100% of C,
- in which component C) has less than 15% by weight Al content and
- more than 30% by weight Si content, based on 100% of C) and
- where the total of the percentages by weight of A) to F) is 100%.
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Dependencies are inferred from the claim text.