Patent US4540736A successfully refreshed from Google Patents.
US4540736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temporary protective coating composition of ethylene and acrylic acid and a base
Assignee: Honeywell International Inc
•
Filing: 1982-05-17
•
Granted: 1985-09-10
•
Expires: 2002-05-17
Abstract
Abstract The aqueous, liquid composition, the method of preparation of the composition, and the method of use of the composition as a temporary coating. The composition comprises water, a copolymer of ethylene and an alpha,beta-ethylenically unsaturated carboxylic acid having a number average molecular weight of from about 500 to 5000 and an acid number of at least 100 milligrams of potassium hydroxide necessary to neutralize one gram of copolymer. There should be a sufficient amount of a base which is preferably volatile, to form a clear, aqueous liquid composition.
Inventors
- 👤 Joris F. A. Herten
- 👤 Emile M. Devroede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:29
CPC Classifications
C; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A method comprising the steps of: coating a strippable coating composition onto a substructure, the coating composition comprising water, a sufficient amount of a base to form a clear aqueous liquid composition, and from 0.1% to 20% by weight of a copolymer of ethylene and an emulsifiable alpha,beta-ethylenically unsaturated carboxylic acid having at least one carboxylic group and 3 to 8 carbon atoms, the copolymer having a number average molecular weight of from 500 to 5,000 and an acid number of at least 100 milligrams of potassium hydroxide necessary to neutralize one gram of the copolymer; and washing the coating composition off of the substructure with a basic solution.
Claim 2
Independent Claim
109 words
A method comprising the steps of: coating a strippable coating composition onto a substructure, the coating composition comprising water, a sufficient amount of a base to form a clear aqueous liquid composition, and from 0.1% to 20% by weight of a copolymer of ethylene and an emulsifiable alpha,beta-ethylenically unsaturated carboxylic acid having at least one carboxylic group and 3 to 8 carbon atoms, the copolymer having a number average molecular weight of from 500 to 5,000 and an acid number of at least 100 milligrams of potassium hydroxide necessary to neutralize one gram of the copolymer; and washing the coating composition off of the substructure with a basic solution.
Claim 3
Dependent Claim
17 words
The method as recited in claim 1 further comprising drying the composition in the substructure after coating.
Claim 4
Dependent Claim
26 words
The method as recited in claim 1 wherein the base is selected from the group consisting of ammonia, morpholine, diethylaminoethhanol, 2-amino-2-methyl-1-propanol, sodium hydroxide and potassium hydroxide.
Claim 5
Dependent Claim
12 words
The method as recited in claim 1 wherein the base is volatile.
Claim 6
Dependent Claim
22 words
The method as recited in claim 4 wherein the base is selected from the group consisting of ammonia, morpholine, methylaminoethanol, and 2-amino-2-methyl-1-propanol.
Claim 7
Dependent Claim
17 words
The method as recited in claim 1 wherein there is from 0.1 to 20% by weight ammonia.
Claim 8
Dependent Claim
19 words
The method as recited in claim 6 wherein there is from 1 to 7 percent by weight of ammonia.
Claim 9
Dependent Claim
19 words
The method as recited in claim 1 wherein the copolymer has an acid number of from 115 to 160.
Claim 10
Dependent Claim
27 words
The method as recited in claim 1 wherein the basic solution is selected from the group consisting of alkali basic solutions, alkaline basic solutions, alcohol and ammonia.
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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |