Patent ID: 6861149

Claim:
A dilutable, non-aqueous concentrate, comprising a homogeneous mixture comprising: (a) at least one self-emulsifying fluorinated alkoxysilane of the formula I: R f 1 -[-Q-[SiY 3-x R 1 x ] z ] y (I) wherein R f 1 represents a monofunctional or difunctional fluorinated group; Q independently represents an organic difunctional or trifunctional linking group; R 1 independently represents a C 1 -C 4 alkyl group; Y independently represents a C 1 -C 4 alkoxy group or a hydrophilic alkoxy group of the structure —O-A-R 3 with the proviso that at least one hydrophilic alkoxy group is present in the fluorinated alkoxysilane, wherein each A independently comprises a difunctional hydrophilic group: a) having the formula (CHR 2 —CH 2 O) q in which q is a number having a value of 1 to 40, R 2 is independently hydrogen or methyl, and that at least 70% of R 2 is hydrogen; or (b) derived from a polyol or its alkyl ether or polyether derivative by removal of one OH and one hydroxyl hydrogen; and wherein R 3 independently is hydrogen or a lower alkyl group having 1 to 4 carbon atoms; x is 0 or 1; y is 1 or 2; z is 1 or 2; and (b) one or both of at least one organic cosolvent, which is completely miscible in water, and at least one fluorinated surfactant.