Coating agent, resin member, and production method therefor
AssigneesKabushiki Kaisha Toyota Jidoshokki, Tokyo University of Science Foundation
InventorsAyano Sasaki, Sayako Sato, Hidenori Munekata, Motoshige Isobe, Hisashi Muramatsu, Koji Arimitsu
Life of this patent
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Abstract
A coating agent has: a film-forming component containing an organosilicon compound having a radical polymerizable functional group and an alkoxysilyl group; and a film-curing component composed so that a base and a radical can be generated on irradiation with ultraviolet light. The film-curing component includes a nonionic photobase generator having no ionic bond in the molecular structure. The content of the nonionic photobase generator is 0.1 parts by mass or more and 50 parts by mass or less, based on 100 parts by mass of the organosilicon compound.
Claims8
A coating agent comprising:
- a film-forming component containing an organosilicon compound having a radical polymerizable functional group and an alkoxysilyl group, and a polymerizable ester having a radical polymerizable functional group, wherein the polymerizable ester excludes the organosilicon compound;
- and
- a film-curing component composed so that a base and a radical can be generated on irradiation with ultraviolet light, wherein
- the film-curing component contains a nonionic photobase generator having no ionic bond in a molecular structure,
- a content of the nonionic photobase generator is 0.1 parts by mass or more and 50 parts by mass or less, based on 100 parts by mass of the organosilicon compound, and
- a content of the polymerizable ester is 0.1 times or more and 1000 times or less than a content of the organosilicon compound in terms of mass ratio,
- the coating agent satisfies at least one of two conditions:
- condition (α):
- the organosilicon compound and the polymerizable ester satisfy relationships of formulas (I) and (II), and condition (β):
- the organosilicon compound and the polymerizable ester satisfy relationships of formulas (III) and (IV):
- [
- Mathematical
-
- Formula
-
- 1
- ]
- 32.9
- 4
-
- 6
- ×
- (
- y
- ester
- -
- γ
- Si
- -
- 1
-
- 6
- .
- 7
- )
- <
- w
- Si
-
- η
- Si
- +
- w
- ester
-
- η
- ester
- w
- si
- +
- w
- ester
- +
- 3
-
- 3
- 1.2
- <
- 32.
- 9
-
- 4
-
- 6
-
- (
- γ
- ester
- -
- γ
- Si
- +
- 7
- .0
- )
- (
- I
- )
- [
- Mathematical
-
- Formula
-
- 2
- ]
- w
- Si
-
- η
- Si
- +
- w
- ester
-
- η
- ester
- w
- si
- +
- w
- ester
- >
- 200
- (
- II
- )
- [
- Mathematical
-
- Formula
-
- 3
- ]
- η
- >
- -
- 4.6003
-
- (
- γ
- ester
- -
- γ
- Si
- )
- +
- 21
-
- 9
- .
- 4
-
- 655
- (
- III
- )
- [
- Mathematical
-
- Formula
-
- 4
- ]
- γ
- ester
- -
- γ
- Si
- >
- 37
- (
- IV
- )
- where, in the formulas (I) to (IV), γSi represents surface free energy in mJ/cm2 of the organosilicon compound, γester represents surface free energy in mJ/cm2 of the polymerizable ester, ηSi represents an absolute viscosity in mPa·s of the organosilicon compound at 60° C., ηester represents an absolute viscosity in mPa·s of the polymerizable ester at 60° C., wSi represents a content in g of the organosilicon compound, and wester represents a content in g of the polymerizable ester, and η in the formula (III) represents a mixed viscosity in mPa·s of the organosilicon compound and the polymerizable ester, represented by formula (V):
- [
- Mathematical
-
- Formula
-
- 5
- ]
-
- log
-
- (
- log
-
- (
- η
- +
- 1
- )
- )
- =
- ∑
- i
- =
- Si
- ,
- ester
- w
- i
- w
- Si
- +
- w
- ester
-
- (
- log
-
- (
- log
-
- (
- η
- i
- +
- 1
- )
- )
- )
- (
- V
- )
Dependencies are inferred from the claim text.