Single-layer film and hydrophilic material comprising the same
AssigneeMitsui Chemicals, Inc.
InventorKoju Okazaki
Life of this patent
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Abstract
There is stably provided a hydrophilic cured product, such as a single-layer film, in which anionic hydrophilic groups are concentrated at a surface that is in contact with the air and which is excellent in transparency and adhesion to a substrate and tends to be rarely cracked. The hydrophilic cured product or single-layer film comprising a resin composition is produced by applying a mixture containing a polyvalent monomer (II) having two or more (meth) acryloyl groups and a compound (IV) having a specific group and a sulfonic acid group to a substrate or the like, drying the mixture if necessary, and then performing polymerization.
Claims12
A hydrophilic cured product obtained by polymerizing a mixture containing:
- a polyvalent monomer (II) having two or more (meth)acryloyl groups, and a compound (IV) having at least one group selected from a mercapto group, a hydroxyl group and an amino group and having a sulfonic acid group (except a mono(meth)acrylate having at least one anionic hydrophilic group selected from a sulfonic acid group, a carboxyl group and a phosphoric acid group, and the polyvalent monomer (II)).
A process for producing a laminate including a single-layer film having an anionic hydrophilic group and formed on at least one surface of a substrate, comprising:
- a step of preparing a mixture which contains a monomer composition containing a polyvalent monomer (II) having two or more (meth)acryloyl groups and a compound (IV) having at least one group selected from a mercapto group, a hydroxyl group and an amino group and having a sulfonic acid group (except a mono(meth)acrylate having at least one anionic hydrophilic group selected from a sulfonic acid group, a carboxyl group and a phosphoric acid group, and the polyvalent monomer (II)) and contains a solvent containing a compound having a solubility parameter σ of not less than 9.3 (cal/cm3),
- a step of applying the mixture to at least one surface of a substrate,
- a step of removing at least a part of the solvent from the mixture applied, and
- a step of polymerizing the mixture having passed through the above steps.
Dependencies are inferred from the claim text.