Polyamide-based concentrated solution, use thereof in methods for making polyamide compositions and resulting compositions
OwnerGiuseppe Silvestro, Franco Speroni +2inventors
InventorsGiuseppe Silvestro, Franco Speroni, Cuiming Yuan, Haichun Zhang
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Abstract
The invention concerns concentrated solutions based on polyamide used for introducing an additive into a thermoplastic matrix. The concentrated solutions comprise a matrix and an additive, the matrix being a modified polyamide having a star-shaped or H-shaped structure.
Claims17
Concentrated solution comprising a polyamide-based matrix and an additive selected from the group consisting of fire retardants, pigments, dyes, stabilizers, lubricants, catalysts, processing aids, nucleating agents and mixtures thereof, wherein the matrix is a macromolecular compound comprising
- star- or H-configured macromolecular chains comprising a core and at least three polyamide branches linked to the core,
- optionally, linear polyamide macromolecular chains, the weight ratio of the star-configured macromolecular chains to the sum of the star-configured and linear macromolecular chains being between 1 and 0.1 and in that the melt flow index of the matrix measured according to the ISO 1133 standard at 275° C. under a load of 100 g is greater than 20 g/10 mm.
Dependencies are inferred from the claim text.