Light curable resin composition

Patent metadata

Field	Value
Publication number	US-10100236-B2
Application number	US-201615293957-A
Country	US
Kind code	B2
Filing date	Oct 14, 2016
Priority date	Apr 17, 2014
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

c) 0.2 to 10 wt % of a photo initiator.

First claim

What is claimed is:

1. An optical device comprising:
a) a touch screen; and
b) a base substrate selected from a display panel, a liquid crystal display, a plasma display, a light emitting display, an electrophenetic display and a cathode ray display, wherein the touch screen and the base substrate are adhered to one another by a cured reaction product of a composition comprising a light-curable composition, comprising
a) 30 to 90 wt % of a urethane acrylate oligomer with a molecular weight greater than 15000,
b) 2 to 40 wt % of a (meth)acrylate monomer having a benzene ring, and
c) 0.2 to 10 wt % of a photo initiator.

2. The device according to claim 1 , wherein the urethane acrylate oligomer is an aliphatic urethane acrylate.

3. The device according to claim 1 , wherein the (meth)acrylate monomer having a benzene ring is a member selected from the group consisting of benzyl acrylate, phenoxyethyl acrylate, nonylphenoxypolyethylene glycol acrylate, ethoxylated bisphenol A diacrylate, phenoxyethyl methacrylate, ethoxylated bisphenol A dimethacrylate, benzyl methacrylate, 1-phenylethyl methacrylate, 2-phenoxyethyl methacrylate, 2-phenylethyl methacrylate, 3-phenylpropyl methacrylate, 3-phenylpropyl acrylate and 2-phenoxyethyl acrylate and combinations thereof.

4. The device according to claim 3 , wherein the (meth)acrylate monomer having a benzene ring is a member selected from the group consisting of

5. The device according to claim 1 , wherein the photoinitiator is a member selected from the group consisting of phenylglyoxylates, α-hydroxyketones, α-aminoketones, benzildimethylketal, monoacylphosphinoxides, bisacylphosphinoxides, benzophenones, oxime esters, titanocene and combinations thereof.

6. The according to claim 1 , wherein the composition comprises:
a) 40 to 80 wt % of a urethane acrylate oligomer with a molecular weight of more than 15000,
b) 5 to 30 wt % of a (meth)acrylate monomer having a benzene ring, and
c) 0.5 to 6 wt % of a photo initiator.

7. The device according to claim 1 , wherein the composition further comprises up to 40 wt % deformer, ultra-violet light absorber, light stabilizer, silane coupling agent, antioxidant and combinations thereof.

8. The device according to claim 7 , wherein the deformer is based on silicones.

9. The device according to claim 7 , wherein the antioxidant is a member selected from the group consisting of phenolic, aminic, sulphur-based antioxidants and multifunctional antioxidants or combinations thereof.

10. The according to claim 7 , wherein the ultra-violet light absorber is a benzotriazole type ultra-violet light absorber.

11. The device according to claim 1 , wherein the composition comprises
a) 40 to 80 wt % of a urethane acrylate oligomer with a molecular weight of more than 20,000,
b) 5 to 30 wt % of a (meth)acrylate monomer having a benzene ring, and
c) 0.5 to 6 wt % of a photo initiator,

wherein the composition has a thixotropic ratio of 1.7.

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Sawanobori Junichi
• Chen Chunfu
• Kanari Masao

Classifications

• C08L75/04

  Polyurethanes · CPC title

• C09J2203/318

  for the production of liquid crystal displays · CPC title

• C08L75/16

  having terminal carbon-to-carbon unsaturated bonds · CPC title

• G02F1/133526

  Lenses, e.g. microlenses or Fresnel lenses · CPC title

• C09J133/06

  of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical · CPC title