Poly-perfluoroalkyl substituted polyamides as foam stabilizers in paper oil proofing agents and aqueous fire fighting foams

摘要

Perfluoroalkyl-allyloxy- and perfluoroalkyl-iodopropyloxy-substituted polyaminoacids or poly-RF-fluoroallyl-substituted polyaminoacids which contain, in random distribution, q units of A-1, r units of A-2, s units of A-3 and t units of A-4 in which A-1 and A-2 are perfluoroalkyl-substituted amino groups of the formulae CHEM A-3 is a hydrophilically substituted amino or amido group of the formula CHEM and A-4 is a substituted amino or amido group of the formula CHEM where the variables are as defined herein, are useful to provide oil repellency to paper and as foam stabilizers in alcohol resistant - aqueous fire-fighting foam fire-fighting foam compositions.