A compound represented by the following formula (a):
CH
2
═CR
1
—CONJ-CKR
2
—(CH
2
)
n
—COO-Q
1
-Rf
1
(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, R
1
is hydrogen atom or methyl group, R
2
is hydrogen atom or a group represented by —(CH
2
)
m
—COO-Q
2
-Rf
2
(r), n and m are independently an integer of 0 to 4, Rf
1
and Rf
2
are independently a polyfluoroalkyl group or a polyfluoroether group containing 1 to 6 carbon atoms, Q
1
and Q
2
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.
提供了一个由以下
化学式(a)表示的化合物:
CH2═CR1—CONJ-CKR2—( )n—COO-Q1-Rf1(a)。该化合物能够形成一种聚合物,其油脂排斥性与含有至少8个碳原子的聚氟烷基团的聚合物相当,尽管聚氟烷基团仅含有最多6个碳原子。在该式中,R1为氢原子或甲基基团,R2为氢原子或表示为—( )m—COO-Q2-Rf2(r)的基团,n和m独立地为0到4的整数,Rf1和Rf2独立地为含有1到6个碳原子的聚氟烷基团或聚
氟醚基团,Q1和Q2独立地为单键或双价连接基团,J为氢原子或含有1到3个碳原子的烷基团,K为氢原子或含有1到3个碳原子的烷基团,j和k独立地为单键或含有1到3个碳原子的亚烷基基团,但j和k不同时为单键。