Patent US3700618A successfully refreshed from Google Patents.
US3700618A
Expired / Lapsed
US
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Polyamides exhibiting improved freezethaw characteristics in printing ink compositions
Assignee: Union Camp Corp
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Filing: 1969-07-31
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Granted: 1972-10-24
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Expires: 1989-07-31
Abstract
Abstract POYAMIDE RESINS EXHIBITING IMPROVED FREEZE-THAW CHARACTERISTICS IN PRINTING INK COMPOSITIONS COMPRISE THE REACTION PRODUCT OF A DIAMINE WITH A SELECTED MIXTURE OF CARBOXYLIC ACIDS COMPRISING FROM ABOUT 20 TO 90 EQUIVALENT PERCENT OF A POLYMERIC CARBOXYLIC ACID HAVING AN ACID FUNCTIONALITY OF AT LEAST 3; FROM ABOUT 10 TO 80 EQUIVALENT PERCENT OF A POLYMERIC CARBOXYLIC ACID HAVING AN ACID FUNCTIONALITY OF ABOUT 2; IN A RATIO OF THE FORMER POLYMERIC CARBOXYLIC ACID TO THE LATTER POLYMERIC CARBOXYLIC ACID OF FROM ABOUT 1:4 TO 9:1; AND FROM ABOUT 10 TO 60 EQUIVALENT PERCENT OF A CHAIN-STOPPING MONOCARBOXYLIC ACID.
Inventors
- 👤 Hubert Joseph Sharkey
- 👤 Robert J Sturwold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:44
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |