Active-energy-ray-curable composition, and process for producing transparent film having fine uneven structure on surface thereof

Patent metadata

Field	Value
Publication number	US-9975282-B2
Application number	US-201213990426-A
Country	US
Kind code	B2
Filing date	Jan 31, 2012
Priority date	Jan 31, 2011
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

Described are: an active-energy-ray-curable composition ( 38 ) containing a phosphate ester compound of which an aqueous solution prepared by extracting with 50 mL of water per 1 g of the phosphate ester compound has a pH value of 6.5 to 7.5 at 25° C., wherein the value of (the concentration of phosphoric acid in the aqueous solution, expressed in mass ppm)×(the content of the phosphate ester compound in the active-energy-ray-curable composition, expressed in mass %) is 50 or less; and a process for producing a transparent film ( 40 ) which includes the active-energy-ray-curable composition ( 38 ) and in which a cured resin layer ( 44 ) having a fine uneven structure is formed on the surface of a base film ( 42 ).

First claim

What is claimed is:

1. An active-energy-ray-curable composition, comprising a phosphate ester compound, wherein the phosphate ester compound is a polyoxyethylene alkyl phosphate ester compound represented by the following Formula (1):

wherein in Formula (1), R 1 is alkyl, m is an integer of 1 to 20, and n is an integer of 1 to 3, and wherein the phosphate ester compound is selected such that when the phosphate ester compound is extracted with 50 mL of water per 1 g thereof to prepare an aqueous solution, the aqueous solution has a pH value of 6.5 to 7.5 at 25° C., and wherein the active-energy-ray-curable composition has a value defined by a formula of “(concentration of phosphoric acid in the aqueous solution, expressed in mass ppm)×(content of the phosphate ester compound in the active-energy-ray-curable composition, expressed in mass %)” is 50 or less.

2. A method of producing a transparent film having a fine uneven structure on a surface thereof, wherein the method produces a transparent film in which a cured resin layer having a fine uneven structure is formed on a surface of a base film, and the method comprises:
a process of sandwiching an active-energy-ray-curable composition between the base film and a mold having an inverted structure of the fine uneven structure on a surface thereof,
a process of irradiating the active-energy-ray-curable composition with an active energy ray to cure the active-energy-ray-curable composition to obtain the transparent film in which the cured resin layer, to which the inverted structure has been transferred, is formed on a surface of the base film, and
a process of separating the obtained transparent film and the mold, wherein the active-energy-ray-curable composition comprises a phosphate ester compound, wherein the phosphate ester compound is a polyoxyethylene alkyl phosphate ester compound represented by the following Formula (1):

wherein in Formula (1), R 1 is alkyl, m is an integer of 1 to 20, and n is an integer of 1 to 3, and wherein the phosphate ester compound is selected such that when the phosphate ester compound is extracted with 50 mL of water per 1 g thereof to prepare an aqueous solution, the aqueous solution has a pH value of 6.5 to 7.5 at 25° C., and wherein the active-energy-ray-curable composition has a value defined by a formula of “(concentration of phosphoric acid in the aqueous solution, expressed in mass ppm)×(content of the phosphate ester compound in the active-energy-ray-curable composition, expressed in mass %)” is 50 or less.

3. The method of claim 2 , wherein the inverted structure of the fine uneven structure on the surface of the mold comprises anodic alumina.

Assignees

• Ozawa Satoru
• Kojima Katsuhiro
• Nakai Yusuke
• Mitsubishi Chem Corp

Inventors

• Ozawa Satoru
• Kojima Katsuhiro
• Nakai Yusuke

Classifications

• C08K5/521

  Esters of phosphoric acids, e.g. of H3PO4 · CPC title

• B29C59/046 Primary

  for layered or coated substantially flat surfaces · CPC title

• B29C43/28 Primary

  incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles · CPC title

• C08G65/3353

  containing oxygen in addition to phosphorus · CPC title

• B29C59/04

  using rollers or endless belts · CPC title