Patent US4267088A successfully refreshed from Google Patents.
US4267088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent resistant inks and coatings
Assignee: Individual
•
Filing: 1979-09-13
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Granted: 1981-05-12
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Expires: 1999-09-13
Abstract
Abstract Coatings particularly useful as marking inks in which an epichlorhydrin-modified polyethylenimine and an ethylene oxide-modified polyethylenimine cooperate in aqueous solution to form a composition capable of application to form deposits adherent to most materials and resistant to most organic solvents but readily removable by water.
Inventors
- 👤 Paul S. Kempf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:50
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/008; C09D179/00; C09D179/02; H; H05; H05K; H05K1/00; H05K1/02; H05K1/0266; H05K2203/00; H05K2203/07; H05K2203/0756; H05K2203/0769; H05K2203/0779; H05K2203/0786; H05K2203/12; H05K2203/122; H05K2203/16; H05K2203/161; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
40 words
A composition for depositing an organic solvent-resistant, water-removable coating comprising a solution in water of from about 3.2 to about 6.9 parts by weight of an epichlorhydrin-modified polyethylenimine (I) and one part by weight of an ethylene oxide-modified polyethlenimine (II).
Claim 2
Dependent Claim
40 words
A composition for depositing an organic solvent-resistant, water-removable coating comprising a solution in water of from about 3.2 to about 6.9 parts by weight of an epichlorhydrin-modified polyethylenimine (I) and one part by weight of an ethylene oxide-modified polyethlenimine (II).
Claim 3
Dependent Claim
41 words
A coating composition as defined in claim 1 in which said epichlorhydrin-modified polyethylenimine (I) has a repeating structure ##STR5## where R is H or a continuation of the polyamine chain and the ethylene oxide-modified polyethylenimine (II) has a repeating structure ##STR6##
Claim 4
Dependent Claim
49 words
A coating composition as defined in claim 2 in which said modified polyethylenimines (I) and (II) are present in the ratio by weight of from about 3.3 parts to about 5.2 parts by weight of said modified polyethylenimine (I) to one part by weight of said modified polyethylenimine (II).
Claim 5
Dependent Claim
24 words
A coating composition as defined in claim 3 in which said composition is a marking ink and comprises a pigment suspended in said solution.
Claim 6
Dependent Claim
60 words
A coating composition as defined in claim 4 in which a 17% aqueous solution of said modified polyethylenimine (I) has a viscosity at 25° C. of 20 CPS. and a specific gravity of 1.055 and a 37% aqueous solution of said modified polyethylenimine (II) has a viscosity at 25° C. of under 3500 CPS. and a specific gravity of 1.08.
Claim 7
Dependent Claim
72 words
A coating composition as defined in claim 5 comprising from about 7 to about 10 parts by weight of said 17% solution of said modified polyethylenimine (I), about 1 part by weight of said modified polyethylenimine (II), from about 25% to about 35% by weight of pigment based on the weight of the composition up to about 10% by weight of a volatile lower alcohol based on the weight of the polymers.
References Cited (Backward Citations)
US3277128A
Cited
US3520774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |