Optical product having a high refractive index microreplication resin

• US 20030100693A1
• Filed: 11/12/2002
• Published: 05/29/2003
• Est. Priority Date: 12/21/2000
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Pokorny, Richard J., Olson, David B., Fong, Bettie C.
• Granted Patent: US 6,953,623 B2
• Time in Patent Office: Days
• US Class Current: 526/286
• CPC Class Codes: C08F 220/301 and one oxygen in the alcohol moiety
• CPC Class Codes: C08F 228/02 by a bond to sulfur
• CPC Class Codes: C08L 33/14 of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
• CPC Class Codes: G02B 1/04 made of organic materials, e.g. plastics G02B1/08 takes precedence
• CPC Class Codes: Y10T 428/31507 Of polycarbonate
• CPC Class Codes: Y10T 428/31576 Ester monomer type [polyvinylacetate, etc.]
• CPC Class Codes: Y10T 428/31649 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31797 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/3188 Next to cellulosic
• CPC Class Codes: Y10T 428/31917 Next to polyene polymer

Abstract

A polymerizable composition that includes a monomer of the formula

wherein X is hydrogen or one or more of methyl, chlorine, bromine or iodine, R¹ is a straight or branched alkyl linking group of 2 to 12 carbon atoms, R² is hydrogen or methyl, and n is 1 to 3; and a monomer of the formula

wherein X₁ and X₂ are each independently hydrogen or one or more of methyl, chlorine, bromine or iodine, and R² is hydrogen or methyl is described having a high index of refraction and being suitable for use in forming an optical product.

Claims

1. An optical product comprising:

a base; and

an optical layer prepared from the polymerizable composition comprising

(a) a monomer of the formula

wherein

X is hydrogen or one or more methyl, chlorine, bromine or iodine,

R¹ is a straight or branched alkyl linking group of 2 to 12 carbon atoms,

R² is hydrogen or methyl, and

n is 0 to 3; and

(b) a monomer of the formula

wherein

X₁ and X₂ are each independently hydrogen or one or more methyl, chlorine, bromine or iodine, and

R² is hydrogen or methyl.

2. The optical product of claim 1, wherein the base is prepared from materials selected from the group consisting of cellulose acetate butyrate, cellulose acetate propionate, cellulose triacetate, polyether sulfone, polymethyl methacrylate, polyurethane, polyester, polycarbonate, polyvinyl chloride, syndiotactic polystyrene, polyethylene naphthalate, copolymers or blends based on naphthalene dicarboxylic acids, and glass.

3. The optical product of claim 1, wherein the base comprises a polarizer.

4. The optical product of claim 1, wherein the optical layer comprises a microstructure-bearing layer.

5. The optical product of claim 1, wherein the optical product comprises a brightness enhancement film.

6. A lens sheet comprising:

a transparent substrate; and

an optical layer made from the polymerizable composition of claim 1.