| abstract |
Provided is a decane having a fluoropolyether-modified polymer of the formula (1) wherein Rf is a polymer residue of a fluorine-containing oxyalkyl group or a fluorine-containing oxyalkylene group, and Y is a divalent to hexavalent hydrocarbon group. R and R' are C1-C4 alkyl or phenyl, X and X' are hydroxy or hydrolyzable groups, n is an integer from 1 to 3, a is an integer from 0 to 3, and m is from 1 to 5. An integer and α is 1 or 2. A surface treatment agent comprising the decane has storage stability and is cured into a water/oil repellent layer having weather resistance.n□ |