Composition and film
AssigneeToyo Gosei Co., Ltd.
InventorsRisa Wada, Takeshi Osaki
Life of this patent
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Abstract
Methods for producing an optical element having a cured layer with a concavo-convex structure are described. Such a method includes: forming a composition layer on a base material by using a composition containing a polymerizable compound and a photo initiator; forming a pattern formative layer by pressure-contacting a mold; and forming the cured layer having the concavo-convex structure by photo-curing the pattern formative layer, wherein the polymerizable compound contains (a) a urethane (meth)acrylate monomer, the composition contains 0.005 to 0.5 part by mass of the photo initiator with respect to 100 parts by mass of the polymerizable compound, and the cured layer has a film thickness of the concavo-convex structure within a range of 0.5 mm to 1 cm.
Claims9
A method for producing an optical element having a cured layer having a concavo-convex structure, the method comprising:
- forming a composition layer on a base material by utilizing a composition containing a polymerizable compound and a photo initiator;
- forming a pattern formative layer by pressure-contacting a mold having the concavo-convex structure on a surface of the composition layer and then transferring the concavo-convex structure to the composition layer;
- and
- forming the cured layer having the concavo-convex structure by photo-curing the pattern formative layer,
- wherein the polymerizable compound contains both:
- (a) a urethane (meth)acrylate monomer having a molecular weight of 400 or more;
- and
- (b) a (meth)acrylate monomer having at least one of an alicyclic structure or a heteroalicyclic structure, the (meth)acrylate monomer (b) being other than the urethane (meth)acrylate monomer (a),
- wherein the polymerizable compound has a composition ratio, by mass, of (a) to (b),
- wherein the mass of the urethane (meth)acrylate monomer (a) is from less than 100 parts by mass to 36 parts by mass based on 100 parts by mass of the polymerizable compound, and
- wherein the mass of the (meth)acrylate monomer (b) is from greater than 0 parts by mass to 60 parts by mass based on 100 parts by mass of the polymerizable compound, respectively,
- wherein the composition contains 0.005 to 0.5 part by mass of the photo initiator based on 100 parts by mass of the polymerizable compound, and
- wherein a film thickness of the cured layer having the concavo-convex structure is within the range of 0.5 mm to 1 cm.
A method for producing an optical element having a cured layer having a concavo-convex structure, the method comprising:
- utilizing a composition comprising:
- 100 parts by mass of a polymerizable compound comprising both:
- (a) a urethane (meth)acrylate monomer having a molecular weight of 400 or more, and
- (b) a (meth)acrylate monomer having at least one of an alicyclic structure or a heteroalicyclic structure, the (meth)acrylate monomer having a ring structure being other than the urethane (meth)acrylate monomer,
- a composition ratio, by mass, of (a) to (b),
- wherein the mass of the urethane (meth)acrylate monomer (a) is from less than 100 parts by mass to 36 parts by mass based on the 100 parts by mass of polymerizable compound, and
- wherein the mass of the (meth)acrylate monomer (b) is from greater than 0 parts by mass to 60 parts by mass based on the 100 parts by mass of polymerizable compound, respectively, and
- from 0.005 to 0.5 parts by mass of a photo initiator to form a composition layer on a base material;
- pressure-contacting a mold having the concavo-convex structure on a surface of the composition layer and then transferring the concavo-convex structure to the composition layer to form a pattern formative layer;
- and
- photo-curing the pattern formative layer to form the cured layer having a film thickness of from 0.5 mm to one (1) cm.
Dependencies are inferred from the claim text.