Process for production of replica mold for imprinting use

Patent metadata

Field	Value
Publication number	US-9511514-B2
Application number	US-201113702873-A
Country	US
Kind code	B2
Filing date	Jun 21, 2011
Priority date	Jun 23, 2010
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

The present invention provides a method for producing a replica mold for imprinting use which is inexpensive and has good properties including strength and flexibility. The method for producing a replica mold according to the present invention comprises the steps of: (A) coating a substrate with an organic-inorganic hybrid material; (B) semi-curing the coated surface with heat and/or an electromagnetic ray to produce a substrate for fine raised and depressed pattern formation; (C) pressing a master mold having a predetermined fine raised and depressed pattern formed thereon against the substrate for fine raised and depressed pattern formation by an imprinting method to transfer the fine raised and depressed pattern onto the substrate; and (D) irradiating the substrate for fine raised and depressed pattern formation onto which the fine raised and depressed pattern is transferred with an electromagnetic ray to cure the substrate.

First claim

The invention claimed is:

1. A method for producing a replica mold comprising the steps of:
(A) coating a surface of a substrate with an organic-inorganic hybrid material to form an organic-inorganic hybrid material layer;
(B) semi-curing the organic-inorganic hybrid material layer with heat and/or an electromagnetic ray to produce a semi-cured organic-inorganic hybrid material layer;
(C) pressing a master mold having a predetermined fine raised and depressed pattern formed thereon directly against an exposed surface of the semi-cured organic-inorganic hybrid material layer by an imprinting method to transfer the fine raised and depressed pattern onto the exposed surface of the semi-cured organic-inorganic hybrid material layer; and
(D) irradiating the semi-cured organic-inorganic hybrid material layer onto which the fine raised and depressed pattern is transferred with an electromagnetic ray to cure the semi-cured organic-inorganic hybrid material layer,
wherein the organic-inorganic hybrid material comprises:
a) an organosilicon compound comprising:
a compound represented by the formula (I):
R 1 n SiX 4-n   (I)

(wherein n represents 1 or 2; when n is 2, each R 1 is optionally the same or different; R 1 represents an organic group; and one or more of R 1 represent a vinyl group-containing hydrocarbon group; X represents a hydroxyl group or a hydrolyzable group; and each X is optionally the same or different),
a compound represented by the formula (II):
R 2 n SiX 4-n   (II)

(wherein n represents 1 or 2; when n is 2, each R 2 is optionally the same or different; R 2 represents an organic group excluding a vinyl group-containing hydrocarbon group, which has a carbon atom bonded directly to Si in the formula; X represents a hydroxyl group or a hydrolyzable group; and each X is optionally the same or different), and

a hydrolysis condensate thereof if present,
wherein {[the compound of the formula (I)]+[a unit derived from the compound of the formula (I) in the hydrolysis condensate if present]}/{[the compound of the formula (I)]+[the compound of the formula (II)]+[a unit derived from the compound of the formula (I) in the hydrolysis condensate if present]+[a unit derived from the compound of the formula (II) in the hydrolysis condensate if present]}×100 is 30 to 100 mol %; and {[the compound of the formula (II)]+[a unit derived from the compound of the formula (II) in the hydrolysis condensate if present]}/{[the compound of the formula (I)]+[the compound of the formula (II)]+[a unit derived from the compound of the formula (I) in the hydrolysis condensate if present]+[a unit derived from the compound of the formula (II) in the hydrolysis condensate if present]}×100 is 0 to 70 mol %;
b) an electromagnetic ray-curable compound; and
c) a silanol condensation catalyst.

2. The method for producing a replica mold according to claim 1 , further comprising the step of (E) applying a mold releasing layer onto a surface of the fine raised and depressed pattern obtained in the step (D).

3. The method for producing a replica mold according to claim 1 , wherein the organic-inorganic hybrid material comprises a material for a mold releasing layer.

4. The method for producing a replica mold according to claim 1 , wherein {[the compound of the formula (I)]+[a unit derived from the compound of the formula (I) in the hydrolysis condensate if present]}/{[the compound of the formula (I)]+[the compound of the formula (II)]+[a unit derived from the compound of the formula (I) in the hydrolysis condensate if present]+[a unit derived from the compound of the formula (II) in the hydrolysis condensate if present]}×100 is 30 to 95 mol %; and
{[the compound of the formula (II)]+[a unit derived from the compound of the formula (II) in the hydrolysis condensate if present]}/{[the compound of the formula (I)]+[the compound of the formula (II)]+[a unit derived from the compound of the formula (I) in the hydrolysis condensate if present]+[a unit derived from the compound of the formula (II) in the hydrolysis condensate if present]}×100 is 5 to 70 mol %.

5. The method for producing a replica mold according to claim 1 , wherein the electromagnetic ray-curable compound is 80 mass % or less based on the total mass of a solid content of the composition.

6. The method for producing a replica mold according to claim 1 , wherein the silanol condensation catalyst is a photosensitive compound.

7. A replica mold obtained by a method according to claim 1 .

8. The method for producing a replica mold according to claim 1 , wherein step (D) is a step of removing the master mold from the semi-cured organic-inorganic hybrid material layer, and then irradiating the semi-cured organic-inorganic hybrid material layer with an electromagnetic ray to cure the semi-cured organic-inorganic hybrid material layer.

Assignees

• Kumazawa Kazuhisa
• Shibata Hiromoto
• Nippon Soda Co

Inventors

• Kumazawa Kazuhisa
• Shibata Hiromoto

Classifications

• B29C2059/023

  Microembossing · CPC title

• B29C2035/0827

  using UV radiation · CPC title

• B29K2105/243

  Partially cured · CPC title

• B29C35/02

  Heating or curing, e.g. crosslinking or vulcanizing {during moulding, e.g. in a mould}(cold vulcanisation B29C35/18 {; vulcanising tyres, presses therefor B29D30/0601}) · CPC title

• B29C59/022

  characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor · CPC title