Patent US6368682B1 successfully refreshed from Google Patents.
US6368682B1
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Composition and structures made therefrom
Assignee: 3M Innovative Properties Co
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Filing: 1999-10-22
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Granted: 2002-04-09
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Expires: 2019-10-22
Abstract
Abstract A non-halogenated composition having a high index of refraction, preferably greater than 1.55, comprising a vinyl monomer, such as methyl styrene. The cured composition is particularly suited for having a metal layer, such as silver, applied thereto. In one embodiment, the composition can be used to form a microreplicated prismatic structure. Preferably, the structure has two sides, where one side is substantially smooth and the other includes saw-tooth formations having tilted surfaces. A metal layer may be present on one or more sides of the prismatic substrate having the saw-tooth formations.
Inventors
- 👤 Bettie C. Fong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:05
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553; C; C08; C08F; C08F290/00; C08F290/02; C08F290/06; C08F290/064; C08F290/08; C08F290/14; C08F290/144; C08L; C08L33/00; C08L33/04; C08L33/14; G02B; G02B1/00; G02B1/04; C09; C09K; C09K2323/00; C09K2323/05; Y; Y10; Y10T; Y10T428/00; Y10T428/21; Y10T428/218; Y10T428/31504; Y10T428/31551; Y10T428/31605; Y10T428/31678; Y10T428/31692; Y10T428/31786
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
23 words
A non-halogenated, polymerizable optical composition comprising bisphenol-A epoxy diacrylate; an alkyl styrene; and an acrylated epoxy having a functionality of two or greater.
Claim 2
Dependent Claim
23 words
A non-halogenated, polymerizable optical composition comprising bisphenol-A epoxy diacrylate; an alkyl styrene; and an acrylated epoxy having a functionality of two or greater.
Claim 3
Dependent Claim
27 words
The composition of claim 1 , wherein the bisphenol-A epoxy diacrylate is present in the range of 40 to 90 weight percent of the total polymerizable composition.
Claim 4
Dependent Claim
27 words
The composition of claim 2 , wherein the bisphenol-A epoxy diacrylate is present in the range of 55 to 80 weight percent of the total polymerizable composition.
Claim 5
Dependent Claim
17 words
The composition of claim 1 , wherein the alkyl styrene is a C1 to C8 alkyl styrene.
Claim 6
Dependent Claim
29 words
The composition of claim 4 , wherein the C1 to C8 alkyl styrene is present in the range of 5 to 25 weight percent of the total polymerizable composition.
Claim 7
Dependent Claim
16 words
The composition of claim 5 , wherein the C1 to C8 alkyl styrene is methyl styrene.
Claim 8
Dependent Claim
26 words
The composition of claim 1 , wherein the acrylated epoxy is present in the range of 1 to 15 weight percent of the total polymerizable composition.
Claim 9
Dependent Claim
10 words
The composition of claim 1 , further comprising a photoinitiator.
Claim 10
Dependent Claim
25 words
The composition of claim 8 , wherein the photoinitiator is present in the range of 0.25 to 10 weight percent of the total polymerizable composition.
Claim 11
Dependent Claim
10 words
The composition of claim 1 , further comprising a surfactant.
Claim 12
Dependent Claim
25 words
The composition of claim 10 , wherein the surfactant is a fluorocarbon and is present at a level of about 0.1 to 0.5 weight percent.
Claim 13
Dependent Claim
85 words
The composition of claim 1 , wherein the composition comprises: the bisphenol-A epoxy diacrylate, present in the range of 65 to 80 weight percent of the total polymerizable composition; methyl styrene, present in the range of 15 to 20 weight percent of the total polymerizable composition; the acrylated epoxy is present in the range of 2 to 10 weight percent of the total polymerizable composition; and an ultraviolet light photoinitiator, present in the range of 1 to 5 weight percent of the total polymerizable composition.
Claim 14
Dependent Claim
15 words
The composition of claim 12 , having an index of refraction of at least 1.57.
Claim 15
Dependent Claim
10 words
The polymerized product of the composition of claim 12 .
Claim 16
Dependent Claim
59 words
The composition of claim 12 , wherein the composition consists essentially of: about 75 to 80 weight percent bisphenol-A epoxy diacrylate; about 15 to 20 weight percent methyl styrene; about 3 to 5 weight percent of a tri-functional acrylated epoxy; and about 1.5 to 4.5 weight percent ultraviolet light photoinitiator; and less than one weight percent of a surfactant.
Claim 17
Dependent Claim
10 words
The polymerized product of the composition of claim 15 .
Claim 18
Dependent Claim
35 words
A prismatic structure having a three-dimensional face, the structure comprising a polymerized structure of a polymerizable composition comprising bisphenol-A epoxy diacrylate; an alkyl styrene; and an acrylated epoxy having a functionality of two or greater.
Claim 19
Dependent Claim
35 words
A prismatic structure having a three-dimensional face, the structure comprising a polymerized structure of a polymerizable composition comprising bisphenol-A epoxy diacrylate; an alkyl styrene; and an acrylated epoxy having a functionality of two or greater.
Claim 20
Dependent Claim
27 words
The structure of claim 17 , wherein the bisphenol-A epoxy diacrylate is present in the range of 40 to 90 weight percent of the total polymerizable composition.
Claim 21
Dependent Claim
27 words
The structure of claim 18 , wherein the bisphenol-A epoxy diacrylate is present in the range of 55 to 80 weight percent of the total polymerizable composition.
Claim 22
Dependent Claim
17 words
The structure of claim 17 , wherein the alkyl styrene is a C1 to C8 alkyl styrene.
Claim 23
Dependent Claim
29 words
The structure of claim 20 , wherein the C1 to C8 alkyl styrene is present in the range of 5 to 25 weight percent of the total polymerizable composition.
Claim 24
Dependent Claim
16 words
The structure of claim 21 , wherein the C1 to C8 alkyl styrene is methyl styrene.
Claim 25
Dependent Claim
26 words
The structure of claim 17 , wherein the acrylated epoxy is present in the range of 1 to 15 weight percent of the total polymerizable composition.
Claim 26
Dependent Claim
25 words
The structure of claim 17 , further comprising a photoinitiator present in the range of 0.25 to 10 weight percent of the total polymerizable composition.
Claim 27
Dependent Claim
10 words
The structure of claim 17 , further comprising a surfactant.
Claim 28
Dependent Claim
25 words
The structure of claim 25 , wherein the surfactant is a fluorocarbon and is present at a level of about 0.1 to 0.5 weight percent.
Claim 29
Dependent Claim
15 words
The structure of claim 17 , wherein the three-dimensional prismatic structure is a microreplicated structure.
Claim 30
Dependent Claim
29 words
The structure of claim 27 , wherein the microreplicated structure is a saw-tooth formation having a pitch of about 5 microns or more and about 200 microns or less.
Claim 31
Dependent Claim
25 words
The structure of claim 28 , wherein the saw-tooth formations have a pitch of about 30 microns or more and about 80 microns or less.
Claim 32
Dependent Claim
17 words
The structure of claim 29 , wherein the saw-tooth formations have a pitch of about 50 microns.
Claim 33
Dependent Claim
18 words
The structure of claim 28 wherein the saw-tooth formations include tilted surfaces at approximately 6 to 9 degrees.
Claim 34
Dependent Claim
48 words
A display apparatus comprising the structure of claim 17 , and further comprising a metal layer on the three dimensional face, the metal layer comprising a material selected from a group consisting of silver, chromium, nickel, aluminum, titanium, aluminum-titanium alloy, gold, zirconium, platinum, palladium, aluminum-chromium alloy and rhodium.
Claim 35
Dependent Claim
30 words
The display apparatus of claim 32 , the metal layer having a thickness greater than or equal to about 25 angstroms and less than or equal to about 3000 angstroms.
Claim 36
Dependent Claim
47 words
A structure comprising: (a) a polymerized structure of a polymerizable composition comprising: (i) bisphenol-A epoxy diacrylate; (ii) an alkyl styrene; (iii) an acrylated epoxy having a functionality of two or greater; (iv) a photoinitiator; and (b) a silver layer positioned on a surface of the polymerized structure.
Claim 37
Dependent Claim
47 words
A structure comprising: (a) a polymerized structure of a polymerizable composition comprising: (i) bisphenol-A epoxy diacrylate; (ii) an alkyl styrene; (iii) an acrylated epoxy having a functionality of two or greater; (iv) a photoinitiator; and (b) a silver layer positioned on a surface of the polymerized structure.
Claim 38
Dependent Claim
30 words
The structure of claim 34 , wherein the bisphenol-A epoxy diacrylate of the composition is present in the range of 55 to 80 weight percent of the total polymerizable composition.
Claim 39
Dependent Claim
20 words
The structure of claim 34 , wherein the alkyl styrene of the composition is a C1 to C8 alkyl styrene.
Claim 40
Dependent Claim
32 words
The structure of claim 34 , wherein the C1 to C8 alkyl styrene of the composition is present in the range of 5 to 25 weight percent of the total polymerizable composition.
Claim 41
Dependent Claim
16 words
The structure of claim 37 , wherein the C1 to C8 alkyl styrene is methyl styrene.
Claim 42
Dependent Claim
29 words
The structure of claim 34 , wherein the acrylated epoxy of the composition is present in the range of 1 to 15 weight percent of the total polymerizable composition.
Claim 43
Dependent Claim
13 words
The structure of claim 34 , wherein the silver layer is vacuum deposited.
Claim 44
Dependent Claim
19 words
The structure of claim 34 , wherein the silver layer has a thickness of about 100 to 500 angstroms.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-04-08 | 2005-10-08 | 2006-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-08 | 2009-10-08 | 2010-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-08 | 2013-10-08 | 2014-04-09 | $7700.00 | Window Closed / Lapsed |