US5284690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous release coating composition for pressure sensitive adhesives
Assignee: Rohm and Haas Co
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Filing: 1992-11-03
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Granted: 1994-02-08
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Expires: 2012-11-03
Abstract
Abstract This invention is directed to an article comprising a backing layer, at least one pressure sensitive adhesive layer, and an aqueous release coating layer, wherein the pressure sensitive adhesive layer is affixed to at least one side of the backing layer and the aqueous release coating layer comprises a polymer, preferably having acid functionality, and an aqueous solution or dispersion of an organic compound having at least one fatty acid ester and at least one quaternary amine. A method of using a mixture of a polymer, preferably having acid functionality, and an aqueous solution or dispersion of an organic compound having at least one fatty acid ester and at least one quaternary amine as a release coating is also disclosed. The aqueous release coating layer permits the pressure sensitive adhesive layer to be easily separated from the backing layer, even after storage for long durations and under extreme temperature and humidity conditions. The aqueous release coating does not migrate into the pressure sensitive adhesive layer and interfere with the adhesive properties of the pressure sensitive adhesive.
Inventors
- 👤 Martin M. Williams
- 👤 Rodney J. Trahan, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:33
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/201; C09J7/22; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1476; Y10T428/28; Y10T428/2839; Y10T428/2843; Y10T428/2848; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
An article comprising a backing layer, at least one pressure sensitive adhesive layer, and an aqueous release coating layer, wherein said pressure sensitive adhesive layer is affixed to one side of said backing layer and said aqueous release coating layer is provided on the opposite side thereof, wherein said aqueous release coating layer comprises a polymer and an aqueous solution or dispersion of an organic compound having at least one fatty acid ester and at least one quaternary amine, wherein said polymer prevents the migration of said organic compound into the adhesive layer.
Claim 2
Dependent Claim
93 words
An article comprising a backing layer, at least one pressure sensitive adhesive layer, and an aqueous release coating layer, wherein said pressure sensitive adhesive layer is affixed to one side of said backing layer and said aqueous release coating layer is provided on the opposite side thereof, wherein said aqueous release coating layer comprises a polymer and an aqueous solution or dispersion of an organic compound having at least one fatty acid ester and at least one quaternary amine, wherein said polymer prevents the migration of said organic compound into the adhesive layer.
Claim 3
Dependent Claim
11 words
The article of claim 1 wherein the polymer contains acid functionality.
Claim 4
Dependent Claim
13 words
The article of claim 2 wherein the acid functionality is carboxylic acid functionality.
Claim 5
Dependent Claim
11 words
The article of claim 1 wherein the organic compound is lecithin.
Claim 6
Dependent Claim
16 words
The article of claim 1 wherein the organic compound is an alkylester trimethyl quaternary ammonium salt.
Claim 7
Dependent Claim
16 words
The article of claim 5 wherein the organic compound is a tallow trimethyl quaternary ammonium salt.
Claim 8
Dependent Claim
82 words
An article comprising a backing layer containing a pressure sensitive adhesive layer affixed to each side of the backing layer and at least one release coat paper layer in contact with the pressure sensitive adhesive layer where the release coat paper layer comprises a polymer and an aqueous solution or dispersion of an organic compound having at least one fatty acid ester and at least one quaternary amine, wherein said polymer prevents the migration of said organic compound into the adhesive layer.
Claim 9
Dependent Claim
82 words
An article comprising a backing layer containing a pressure sensitive adhesive layer affixed to each side of the backing layer and at least one release coat paper layer in contact with the pressure sensitive adhesive layer where the release coat paper layer comprises a polymer and an aqueous solution or dispersion of an organic compound having at least one fatty acid ester and at least one quaternary amine, wherein said polymer prevents the migration of said organic compound into the adhesive layer.
Claim 10
Dependent Claim
11 words
The article of claim 7 wherein the polymer contains acid functionality.
Claim 11
Dependent Claim
13 words
The article of claim 8 wherein the acid functionality is carboxylic acid functionality.
Claim 12
Dependent Claim
11 words
The article of claim 7 wherein the organic compound is lecithin.
Claim 13
Dependent Claim
16 words
The article of claim 7 wherein the organic compound is an alkylester trimethyl quaternary ammonium salt.
Claim 14
Dependent Claim
16 words
The article of claim 11 wherein the organic compound is a tallow trimethyl quaternary ammonium salt.
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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) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |