Fluorine-Containing Macroinitiator and Production Process for the Same

摘要

Provided is a fluorine-containing macroinitiator, particularly a fluorine-containing macroinitiator that enables production of a fluorine-containing block copolymer containing a non-fluorine vinyl-based monomer having a long side chain. The fluorine-containing macroinitiator includes a polymer represented by the following formula (1) and having a number-average molecular weight of 3,000 to 100,000. In the following formula (1), R2, R3 and R4 are each a specific group, and Q is a polymer segment composed of a structural unit represented by the following formula (2). In the following formula (2), R1 is a hydrogen atom or a methyl group, Rf is a fluoroalkyl group having a specific structure, and k is an appropriate integer that is not 0.;

主权项

1. A fluorine-containing macroinitiator comprising:
a polymer represented by the following formula (1) and having a number-average molecular weight of 3,000 to 100,000, wherein R2 is a straight-chain alkyl group of 1 to 18 carbon atoms, R3 and R4 are each independently a hydrogen atom or an alkyl group of 1 to 3 carbon atoms, and any one of R3 and R4 may contain one carboxyl group, and Q is a polymer segment composed of a structural unit represented by the following formula (2): wherein R1 is a hydrogen atom or a methyl group, Rf is a fluoroalkyl group represented by the following formula (3) or a fluoroalkyl group represented by the following formula (4), and k is an appropriate integer that is not 0,
[Chem. 3]—CnF2n+1  (3) wherein n is an integer of 1 to 6, wherein a is an integer of 0 to 3, b is an integer of 1 to 2, n′ is an integer of 1 to 6, —Cn′F2n′+1 group is bonded to CH2 group of —(CF2CH2)b— group, and —(CF2CF2)a— group is bonded to CF2 group of —(CF2CH2)b— group.