A .compound represented by the following formula (a):
CH2=CR1-CONJ-CKR2-(CH2)n-COO-Q1-Rf1 (a)
is provided. This compound is capable of forming a polymer having an oil repellency equivalent to polymers containing a polyfluoroalkyl group containing at least 8 carbon atoms, although the polyfluoroalkyl group contains up to 6 carbon atoms. In the formula, R1 is hydrogen atom or methyl group, R2 is hydrogen atom or a group represented by - (CH2)m-COO-Q2-Rf2 (r), n and m are independently an integer of 0 to 4, Rf1 and Rf2 are independently a polyfluoroalkyl group or a polyfluoroether group containing 1 to 6 carbon atoms, Q1 and Q2 are independently single bond or a divalent linkage group, J is hydrogen atom or an alkyl group containing 1 to 3 carbon atoms, K is hydrogen atom or an alkyl group containing 1 to 3 carbon atoms, and j and k are independently single bond or an alkylene group containing 1 to 3 carbon atoms with the proviso that j and k are not simultaneously single bond.
由下式(a)代表的.化合物:
CH2=CR1-CONJ-CKR2-( )n-COO-Q1-Rf1 (a)
的化合物。这种化合物能够形成一种聚合物,其拒油性相当于含有至少 8 个碳原子的多氟烷基的聚合物,尽管多氟烷基最多含有 6 个碳原子。在式中,R1 是氢原子或甲基,R2 是氢原子或由 - ( )m-COO-Q2-Rf2 (r) 表示的基团,n 和 m 独立地为 0 至 4 的整数,Rf1 和 Rf2 独立地为多氟烷基或含有 1 至 6 个碳原子的多
氟醚基,Q1 和 Q2 独立地为单键或二价连接基团、J 是氢原子或含 1 至 3 个碳原子的烷基,K 是氢原子或含 1 至 3 个碳原子的烷基,且 j 和 k 独立为单键或含 1 至 3 个碳原子的亚烷基,但 j 和 k 不能同时为单键。