Use of (per)fluoropolyether compounds as additives in formulations for the treatment of wood

摘要

Use of mono- and bifunctional (per)fluoropolyether compounds as additives in formulations for the wood treatment, said (p-er)fluoropolyether compounds having the structures: Rf-O-CFY-L-W W-L-YFC-O-Rf-O-CFY-L-W wherein: L is an organic group selected from -CH2-(OCH2CH2)n-, -CO-NR'-, with R'=H or C1-C4 alkyl group; n=0-8; Y=F, CF3; W is selected from C1-C50 alkyl groups, optionally containing one or more ether O, C6-C50 aryl groups, C7-C50 alkyl-aryl or aryl-alkyl groups; Rf is a (per)fluoropolyether radical.ye