US4387129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminates having optically clear laminates having high molecular weight phenoxy-high crystallinity polyurethane adhesive
Assignee: HP Inc
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Filing: 1982-02-02
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Granted: 1983-06-07
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Expires: 2002-02-02
Abstract
Abstract An adhesive for bonding polyethylene terephthalate, polycarbonate and other transparent thermoplastic sheets to form optically clear laminants with improved bond strengths which remain intact over temperature exposures ranging from -40° C. to 70° C. and humidities ranging up to 90% at 40° C. is provided. The adhesive is a combination of approximately 20% molecular weight phenoxy resin and approximately 80% molecular weight polyurethane resin.
Inventors
- 👤 Kent D. Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:12
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B7/00; B32B7/04; B32B7/12; B32B2375/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24851; Y10T428/24868; Y10T428/24884; Y10T428/24893; Y10T428/24901; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2848; Y10T428/2852; Y10T428/2896; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31565; Y10T428/31786
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
119 words
A printed label for laminating substrates comprising: a substrate having a first surface and a second surface; a first printed layer of graphical information printed on the first surface of the substrate; and an optically clear adhesive layer applied to the second surface of the substrate, the adhesive comprising a polyurethane resin and up to 50% phenoxy resin by weight, wherein said polyurethane resin is represented by the following formula: ##STR3## where R' is a long chain predominantly linear diol, R is any chemical structure which ties two isocyanate groups together and m is an integer greater than one, and wherein said phenoxy resin is represented by the following formula: ##STR4## where m is an integer greater than one.
Claim 2
Dependent Claim
119 words
A printed label for laminating substrates comprising: a substrate having a first surface and a second surface; a first printed layer of graphical information printed on the first surface of the substrate; and an optically clear adhesive layer applied to the second surface of the substrate, the adhesive comprising a polyurethane resin and up to 50% phenoxy resin by weight, wherein said polyurethane resin is represented by the following formula: ##STR3## where R' is a long chain predominantly linear diol, R is any chemical structure which ties two isocyanate groups together and m is an integer greater than one, and wherein said phenoxy resin is represented by the following formula: ##STR4## where m is an integer greater than one.
Claim 3
Dependent Claim
21 words
A label as in claim 1 wherein the adhesive layer comprises approximately 20% phenoxy resin and 80% polyurethane resin by weight.
Claim 4
Dependent Claim
11 words
A label as in claim 1 wherein the substrate comprises polycarbonate.
Claim 5
Dependent Claim
12 words
A label as in claim 1 wherein the substrate comprises polyethylene terephthalate.
Claim 6
Dependent Claim
118 words
An optically clear adhesive panel for laminating substrates comprising: a substrate having a first surface and a second surface; and a first layer of optically clear adhesive cast to the first surface and a second layer of optically clear adhesive cast to the second surface, the adhesive comprising a polyurethane resin and up to 50% phenoxy resin by weight, wherein said polyurethane resin is represented by the following formula: ##STR5## where R' is a long chain predominantly linear diol, R is any chemical structure which ties two isocyanate groups together and m is an integer greater than one, and wherein said phenoxy resin is represented by the following formula: ##STR6## where m is an integer greater than one.
Claim 7
Dependent Claim
118 words
An optically clear adhesive panel for laminating substrates comprising: a substrate having a first surface and a second surface; and a first layer of optically clear adhesive cast to the first surface and a second layer of optically clear adhesive cast to the second surface, the adhesive comprising a polyurethane resin and up to 50% phenoxy resin by weight, wherein said polyurethane resin is represented by the following formula: ##STR5## where R' is a long chain predominantly linear diol, R is any chemical structure which ties two isocyanate groups together and m is an integer greater than one, and wherein said phenoxy resin is represented by the following formula: ##STR6## where m is an integer greater than one.
Claim 8
Dependent Claim
22 words
The optically clear adhesive as in claim 5 wherein the adhesive comprises approximately 20% phenoxy resin and 80% polyurethane resin by weight.
Claim 9
Dependent Claim
14 words
The optically clear adhesive panel as in claim 5 wherein the substrate comprises polycarbonate.
Claim 10
Dependent Claim
15 words
The optically clear adhesive panel as in claim 5 wherein the substrate comprises polyethylene terephthalate.
Claim 11
Dependent Claim
79 words
An optically clear adhesive panel as in claim 5 for laminating substrates as a membrane switch further comprising: a flexible membrane having a first electrical contact on a membrane surface, said membrane surface adhering to said first layer of adhesive; and a base having a second electrical contact on a base surface, said base surface adhering to said second layer of adhesive, said substrate being cleared of said electrical contacts and serving to separate said first and second contacts.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |