Polyamide block and polyether block copolymer powder

摘要

The invention relates to a copolymer powder with polyamide blocks and with polyether blocks having: an enthalpy of fusion of the polyamide blocks greater than or equal to 70 J / g if the mass ratio of the polyamide blocks to the polyether blocks of the copolymer is greater than or equal to 4; an enthalpy of fusion of the polyamide blocks greater than or equal to 50 J / g if the mass ratio of the polyamide blocks to the polyether blocks of the copolymer is greater than or equal to 1 and less than 4; or an enthalpy of fusion of the polyamide blocks greater than or equal to 20 J / g if the mass ratio of the polyamide blocks to the polyether blocks of the copolymer is less than 1.