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US 12,643,991 B2Granted
Magnetic composition comprising a resin consisting of copolymers containing polyamide blocks and polyether blocks
AssigneeArkema France
InventorQuentin Pineau
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Abstract
A magnetic composition including a polyamide block- and polyether block-containing copolymer resin in which the magnetic particles are dispersed. Also, a process for preparing same and to the use of same for the manufacture of a magnet which can in particular be used for electronic or electrical applications (smartphone, tablet, etc.), for sports, automobiles or industry.
Claims13
A magnetic composition comprising:
- from 92% to 97% by weight of at least one magnetic filler,
- from 3% to 8% by weight of a polyamide block- and polyether block-containing (PEBA) copolymer resin having an instantaneous hardness of less than or equal to 55 Shore D, and,
- from 0% to 1% by weight of at least one additive,
- the total amounting to 100% by weight of the composition,
- wherein the melt viscosity of the PEBA copolymer is less than 550 Pa·s.
2 more elements
Dependencies are inferred from the claim text.