JP2006152061A5

JP2006152061A5 -

Info

Publication number: JP2006152061A5
Application number: JP2004342088A
Authority: JP
Filing date: 2004-11-26
Publication date: 2007-11-29
Anticipated expiration: 2024-11-26

Description

前記含フッ素共重合体は、水酸基、カルボキシ基、アミド基、およびグリシジル基からなる第１の官能基群に含まれる官能基を持つことが必要である。
含フッ素共重合体一モル当たりの、第１の官能基群に含まれる官能基の平均モル数は３３以上５４未満の範囲内である。より好ましい範囲は３４以上５１未満である。
上記範囲の下限値以上とすることにより、塗膜と含フッ素樹脂基体との密着性が向上する。特にフッ素樹脂基体に後述の表面処理が施された場合に、良好な密着性向上効果が得られる。前記第１の官能基群に含まれる官能基の平均モル数が上記範囲の上限値未満であると、塗膜の粘着性が低く、大気中の粉塵を吸着し難く、塗膜の表面が汚れ難い。

The fluorine-containing copolymer needs to have a functional group included in the first functional group consisting of a hydroxyl group, a carboxy group, an amide group, and a glycidyl group.
The average number of moles of functional groups contained in the first functional group per mole of the fluorinated copolymer is in the range of 33 or more and less than 54. A more preferable range is 34 or more and less than 51.
By setting it above the lower limit of the above range, the adhesion between the coating film and the fluororesin substrate is improved. In particular, when the fluororesin substrate is subjected to the surface treatment described below, a good adhesion improving effect can be obtained. When the average number of moles of the functional groups contained in the first functional group is less than the upper limit of the above range, the coating film has low tackiness, hardly adsorbs dust in the atmosphere, and the surface of the coating film becomes dirty. not flame.