Poly-perfluoroalkyl substituted polyamines as grease proofing agents for paper and foam stabilizers in aqueous fire-fighting foams
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United States of America Patent
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Dec 5, 2000
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N/A
app pub date -
Jan 20, 1999
filing date -
May 8, 1998
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Abstract
Perfluoroalkyl-allyloxy- and perfluoroalkyl-iodopropyloxy-substituted polyaminoacids or poly-R.sub.F -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 ##STR1## A-3 is a hydrophilically substituted amino or amido group of the formula ##STR2## and A-4 is a substituted amino or amido group of the formula ##STR3## 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.
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