US4554215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating of cellulosic base stocks and the product thereof
Assignee: Individual
•
Filing: 1983-11-16
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Granted: 1985-11-19
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Expires: 2003-11-16
Abstract
Abstract This invention relates to a method of pretreating cellulosic webs with dry vapors of a lower alkylhalogeno silane, which react with hydroxyl groups in said cellulosic web, and subsequently coating said web. Said invention also relates to the article of manufacture prepared by said method.
Inventors
- 👤 Edward Robbart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:55
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/02; D21H23/22; D21H23/30; D21H17/00; D21H17/03; D21H17/05; D21H17/13; D21H17/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
93 words
In a method of coating webs of cellulosic base stocks wherein a coating material is applied to the web of the base stock so as to improve the properties thereof, the improvement comprising, prior to said coating, treating said web with dry vapors of a lower alkylhalogeno silane which react with hydroxyl groups in the cellulosic base stock to form a deposit of siloxane and polymers thereof on and integral with said web of cellulosic base stock, and forming a deposit of said coating material on said deposit of siloxane and polymers thereof.
Claim 2
Dependent Claim
93 words
In a method of coating webs of cellulosic base stocks wherein a coating material is applied to the web of the base stock so as to improve the properties thereof, the improvement comprising, prior to said coating, treating said web with dry vapors of a lower alkylhalogeno silane which react with hydroxyl groups in the cellulosic base stock to form a deposit of siloxane and polymers thereof on and integral with said web of cellulosic base stock, and forming a deposit of said coating material on said deposit of siloxane and polymers thereof.
Claim 3
Dependent Claim
13 words
A method according to claim 1 wherein the cellulosic base stock is paper.
Claim 4
Dependent Claim
15 words
A method according to claim 2 wherein said coating material is a paper sizing agent.
Claim 5
Dependent Claim
13 words
A method according to claim 2 wherein said coating material is an adhesive.
Claim 6
Dependent Claim
14 words
A method according to claim 2 wherein said coating material is a release agent.
Claim 7
Dependent Claim
14 words
A method according to claim 2 wherein said coating material is a carbonless solution.
Claim 8
Dependent Claim
14 words
A method according to claim 2 wherein the coating material is a synthetic plastic.
Claim 9
Dependent Claim
13 words
A method according to claim 6 wherein the synthetic plastic is a polyolefin.
Claim 10
Dependent Claim
11 words
A method according to claim 7 wherein the polyolefin is polyethylene.
Claim 11
Dependent Claim
97 words
In an article of manufacture wherein at least one side of a cellulosic substrate has applied thereto a layer of a coating material to improve the properties thereof, the improvement comprising a base layer for said coating material, said base layer being obtained by treating the cellulosic substrate with dry vapors of a lower alkylhalogeno silane which react with hydroxyl groups in the cellulosic substrate to form a deposit of siloxane and polymers thereof on and integral with said cellulosic substrate, and forming a deposit of said coating material on said deposit of siloxane and polymers thereof.
Claim 12
Dependent Claim
97 words
In an article of manufacture wherein at least one side of a cellulosic substrate has applied thereto a layer of a coating material to improve the properties thereof, the improvement comprising a base layer for said coating material, said base layer being obtained by treating the cellulosic substrate with dry vapors of a lower alkylhalogeno silane which react with hydroxyl groups in the cellulosic substrate to form a deposit of siloxane and polymers thereof on and integral with said cellulosic substrate, and forming a deposit of said coating material on said deposit of siloxane and polymers thereof.
Claim 13
Dependent Claim
15 words
An article of manufacture according to claim 10 wherein the cellulosic base stock is paper.
Claim 14
Dependent Claim
17 words
An article of manufacture according to claim 10 wherein the coating material is a paper sizing agent.
Claim 15
Dependent Claim
15 words
An article of manufacture according to claim 10 wherein said coating material is an adhesive.
Claim 16
Dependent Claim
16 words
An article of manufacture according to claim 10 wherein said coating material is a release agent.
Claim 17
Dependent Claim
16 words
An article of manufacture according to claim 10 wherein said coating material is a carbonless solution.
Claim 18
Dependent Claim
16 words
An article of manufacture according to claim 10 wherein the coating material is a synthetic plastic.
Claim 19
Dependent Claim
15 words
An article of manufacture according to claim 16 wherein the synthetic plastic is a polyolefin.
Claim 20
Dependent Claim
13 words
An article of manufacture according to claim 17 wherein the polyolefin is polyethylene.
Claim 21
Dependent Claim
34 words
An article of manufacture according to claim 10 wherein both surfaces of the paper are silane treated to provide said base layer and then one surface of the silane-treated paper is coated with polyethylene.
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) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |