| 摘要 |
<p>PURPOSE:To obtain the title modifier excellent in the sensitivity to active energy rays and in the water-and-oil repellency, blocking-proofness, moisture-proofness etc. of cured surfaces by introducing unsaturated group into a fluorine-contg. block copolymer having hydroxyl group in the side chain. CONSTITUTION:Firstly, a copolymerization is made between (A) a monomer of formula I [R1 is H or methyl; R2 is of formula II (p is 1 - 10), etc.; Rf is of formula III (n is 1 - 16), etc.] and (B)(1) a second monomer of formula IV (R3 is H, methyl, etc.; R4 is of formula V) and (2) a third monomer of formula VI (R8 is H or methyl; R9 is of formula VII, etc.; t is 1 - 20) into a fluorine- contg. polymer. Thence, (C) a compound of formula VIII is added to the fluorine- contg. polymer to carry out dehydrochloric acid reaction to effect forming structural unit of formula IX in the polymer, thus giving the objective modifier with the unit of the formula IX accounting for 1 - 70wt.% of the component B and the weight ratio A/B = (80 : 20) - (10 - 90).</p> |
