US4865758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paint removing composition containing lower alkyl-substituted 2-oxazolidinones
Assignee: Union Carbide Corp
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Filing: 1988-11-08
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Granted: 1989-09-12
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Expires: 2008-11-08
Abstract
Abstract A paint removing composition comprising lower alkyl-substituted 2-oxazolidinones is disclosed. Also disclosed are methods for softening and removing paint which has been applied to a substrate comprising contacting a painted substrate with the above-described paint remover composition.
Inventors
- 👤 Kenneth C. Caster
- 👤 Ronald L. Readshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:30
CPC Classifications
C; C09; C09D; C09D9/00; C09D9/005
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
59 words
A method for removing paint from a substrate to which it has been applied comprising (a) contacting said paint with a paint remover composition comprising from about 20 to about 80 weight percent, based upon the total weight of the paint remover composition of at least one lower alkyl substituted 2-oxazolidinone; and (b) removing said paint from said substrate.
Claim 2
Independent Claim
59 words
A method for removing paint from a substrate to which it has been applied comprising (a) contacting said paint with a paint remover composition comprising from about 20 to about 80 weight percent, based upon the total weight of the paint remover composition of at least one lower alkyl substituted 2-oxazolidinone; and (b) removing said paint from said substrate.
Claim 3
Dependent Claim
32 words
The method of claim 1 wherein the lower alkyl-substituted 2-oxazolidinone is present in concentrations of about 40 to about 80 weight percent, based upon the total weight of the paint remover composition.
Claim 4
Dependent Claim
29 words
The method of claim 1 wherein the lower alkyl-substituted 2-oxazolidinone selected from the group consisting of 3-alkyl substituted 2-oxazolidinones, 4-alkyl substituted 2- oxazolidinones, 5-alkyl substituted 2-oxazolidinones and mixtures thereof.
Claim 5
Dependent Claim
27 words
The method of claim 3 wherein the alkyl groups of the 3-alkyl substituted 2-oxazolidinones, 4-alkyl-substituted 2-oxazolidinones, or 5-alkyl-substituted 2-oxazolidinones contain from 1 to about 4 carbon atoms.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein the lower alkyl-substituted 2-oxazolidinone is 3-methyl 2-oxazolidinone.
Claim 7
Dependent Claim
30 words
The method of claim 1 wherein the paint remover composition further comprises a compound selected from the group consisting of diacetone alcohol, N-methyl 2-pyrolidone butyrolactone, n-vinyl 2-pyrrolidone, toluene and xylene.
Claim 8
Dependent Claim
18 words
The method of claim 1 wherein the paint remover composition further comprises a blend of heavy aromatic naphthas.
Claim 9
Dependent Claim
14 words
The method of claim 1 wherein the paint remover composition further comprises a thickener.
Claim 10
Dependent Claim
19 words
The method of claim 8 wherein the thickener is selected from the group consisting of hydroxypropyl cellulose and ethylcellulose.
Claim 11
Independent Claim
48 words
A method for softening paint which has been applied to a substrate comprising contacting said paint with a paint remover composition comprising from about 20 to about 80 weight percent, based upon the total weight of the paint remover composition of at least one lower alkyl substituted 2-oxazolidinone.
Claim 12
Independent Claim
48 words
A method for softening paint which has been applied to a substrate comprising contacting said paint with a paint remover composition comprising from about 20 to about 80 weight percent, based upon the total weight of the paint remover composition of at least one lower alkyl substituted 2-oxazolidinone.
Claim 13
Dependent Claim
32 words
The method of claim 10 wherein the lower alkyl-substituted 2-oxazolidinone is present in concentrations of about 40 to about 80 weight percent, based upon the total weight of the paint remover composition.
Claim 14
Dependent Claim
25 words
The method of claim 10 wherein the lower alkyl-substituted 2-oxazolidinone selected from the group consisting of 3-alkyl-substituted 2-oxazolidinones, 4-alkyl-substituted 2-oxazolidinones, 5-alkyl-substituted 2-oxazolidinones and mixtures thereof.
Claim 15
Dependent Claim
25 words
The method of claim 10 wherein the alkyl groups of the 3-alkyl-substituted 2-oxazolidinones, 4-alkyl-substituted 2-oxazolidinones, 5-alkyl-substituted 2-oxazolidinones contain from 1 to about 4 carbon atoms.
Claim 16
Dependent Claim
12 words
The method of claim 10 wherein the lower alkyl-substituted 2-oxazolidinone is 3-methyl-2-oxazolidinone.
Claim 17
Dependent Claim
33 words
The method claim 14 wherein 3-methyl-2-oxazolidinone is present in the paint remover composition in concentrations of about 20 to about 80 weight percent, based upon the total weight of the paint remover composition.
Claim 18
Dependent Claim
33 words
The method claim 15 wherein 3-methyl-2-oxazolidinone is present in the paint remover composition in concentrations of about 40 to about 60 weight percent, based upon the total weight of the paint remover composition.
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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) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |