Thermal grafts of polyamides

Details Thermal grafts of polyamides Thermal grafts of polyamides

C - Chemistry, Metallurgy

08

G

C08G 81/00 (2006.01) C04B 16/04 (2006.01) C04B 24/14 (2006.01) C08G 69/48 (2006.01)

Patent

CA 2335227

Heating an intimate mixture of: (a) a polyamide which contains pendant carboxylic acid groups; and (b) a compound which contains an animo group efficiently affords graft polymers with a high graft density. Such graft polymers are particularly useful as additives for cementitious compositions.

L'invention concerne un procédé qui consiste à chauffer un mélange intime (a) d'un polyamide renfermant des groupes latéraux acide carboxylique et (b) un composé renfermant un groupe amino. Ce procédé permet d'élaborer avec efficacité des polymères greffés, selon une densité de greffe élevée. Lesdits polymères sont particulièrement utiles comme additifs pour les compositions à base de ciment.

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