Photocurable adhesive composition, photocurable adhesive, polarizing plate, and optical device
An adhesive and light-curing technology, applied in non-polymer organic compound adhesives, non-polymer adhesive additives, optics, etc., can solve problems such as insufficient adhesion of light-curing adhesives, and achieve adhesion Synergy improvement effect
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Embodiment 1
[0073] Preparation of different compositions where R in component A is substituted by phenyl
[0074] Component A (see Table 1 for details) 25 parts by mass
[0075] Component B1: 35 parts by mass of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarbonate
[0076] B2 component: heating polymerization of glycidyl methacrylate / methyl methacrylate / hydroxyethyl acrylate (mass ratio 30:40:30, Mw is 12000) 35 parts by mass
[0077] C component:
[0078] Table 1
[0079] Example Compound number n Dyne value TAC film adhesion norbornene film adhesion curability 1-1 1-0 0 32 ++
[0080] It can be seen from the results in Table 1 that when n=1, the curing effect is better, the adhesion is good, and the adhesion with TAC film and norbornene film is excellent.
Embodiment 2
[0082] R in component A 1 Formulation of different compositions for biphenyl substitution
[0083] A component (see Table 2 for details) 35 parts by mass
[0084] Component B1: 25 parts by mass of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarbonate
[0085] Component B2: heating polymerization of glycidyl methacrylate / methyl methacrylate / hydroxyethyl acrylate (mass ratio 30:40:30, Mw 12000) 35 parts by mass
[0086] C component:
[0087] Table 2
[0088] Example Compound number n Dyne value TAC film adhesion norbornene film adhesion curability 2-1 2-0 0 32 +
[0089] It can be seen from the results in Table 2 that when n=1, the curing effect is better, the adhesion is good, and the adhesion to the TAC film and the norbornene film is excellent.
Embodiment 3
[0091] R in component A 1 Formulation of different compositions for naphthyl substitution
[0092] Component A (see Table 3 for details) 40 parts by mass
[0093] Component B1: 30 parts by mass of pentaerythritol tetraglycidyl ether
[0094] Component B2: heating polymerization of glycidyl methacrylate / methyl methacrylate / hydroxyethyl acrylate (mass ratio 30:40:30, Mw 12000) 25 parts by mass
[0095] C component:
[0096] table 3
[0097]
[0098] It can be seen from the results in Table 3 that when n=1, the curing effect is better, the adhesion is good, and the adhesion to the TAC film and the norbornene film is excellent.
[0099] Compounds with different n=1 were selected, their weight ratios in the adhesive composition were changed, and their application properties were evaluated, as shown in Table 4.
[0100] Table 4
[0101]
[0102]
[0103] table 5
[0104] Example / Comparative example Dyne value TAC film adhesion norbornene film adhe...
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