US 9,809,683 B2
Copolymer with polyamide blocks and a polyether block
Frederic Malet, Lyons (FR)
Assigned to Arkema France, Colombes (FR)
Appl. No. 15/27,603
Filed by Arkema France, Colombes (FR)
PCT Filed Oct. 6, 2014, PCT No. PCT/EP2014/071332
§ 371(c)(1), (2) Date Apr. 6, 2016,
PCT Pub. No. WO2015/052127, PCT Pub. Date Apr. 16, 2015.
Claims priority of application No. 13 59704 (FR), filed on Oct. 7, 2013.
Prior Publication US 2016/0251484 A1, Sep. 1, 2016
Int. Cl. C08G 69/40 (2006.01); C08G 81/00 (2006.01)
CPC C08G 81/00 (2013.01) [C08G 69/40 (2013.01)] 15 Claims
 
1. A copolymer comprising at least two polyamide blocks of different chemical structure, including a first polyamide block PA1 and a second polyamide block PA2, and at least one polyether block, wherein the first polyamide block PA1 has a number of carbon atoms per nitrogen atom of greater than or equal to 8 and the second polyamide block PA2 has a number of carbon atoms per nitrogen atom of less than 8.