Block copolymer of polyamide and polyether, and its...

Details Block copolymer of polyamide and polyether, and its... Block copolymer of polyamide and polyether, and its...

C - Chemistry, Metallurgy

08

G

154/108, 400/201

C08G 81/00 (2006.01) B32B 27/06 (2006.01) C08G 65/00 (2006.01) C08G 69/00 (2006.01) C08G 69/40 (2006.01)

Patent

CA 1039886

BLOCK COPOLYMER OF POLYAMIDE AND POLYETHER, AND ITS PREPARATION AND USE ABSTRACT OF THE DISCLOSURE: A block copolymer of at least one polyamide and at least one polyether, the content of the polyether being about 0.2 to 10% by weight based on the block copolymer, having a scattering index of not less than about 1 wherein the particles of the polyether are agglomerated in a maximum size of not more than about 10 µ and dispersed in the block copolymer, the polyamide consisting of a diamine constituent containing 100 to 50 mol % of m-xylylenediamine or its mixture with p-xylylenediamine and the dicarboxylic acid constituent containing 100 to 50 mol % of at least one aliphatic dicarboxylic acid having 6 to 12 carbon atoms and the polyether having an amino group or a carboxyl group at least one terminal position and a molecular weight of about 2,000 to 20,000. The new polymer is useful for making shaped products such as films, having improved bonding strength, puncture resistance and low temperature impact resistance.

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