US3825514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film forming hydrophilic amide polymer compositions
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1971-10-12
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Granted: 1974-07-23
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Expires: 1991-10-12
Abstract
Abstract HYDROPHILIC AMIDE POLYMERS ARE OBTAINED BY INTERPOLYMERIZING MONOMERS OF AN ETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACID, ETHYLENICALLY UNSATURATED HARD MONOMERS OF THE LOWER ALKYL ESTERS OF AN ACRYLIC ACID AND A SOFT ALKYL ESTER OF AN ALPHA, BETA-ETHYLENICALLY UNSATURATED CARBOXYLIC ACID AND ACYLATING WITH HYDROPHILIC AMINES. THE POLYMERIZED MONOMERIC UNITS ARE SUFICIENT TO PROVIDE AN AVERAGE POLYMER TG RANGING FROM ABOUT 35* TO ABOUT 45*C. AND A WEIGHT AVERAGE MOLECULAR SIZE (AW) OF ABOUT 500 TO 5,O00.
Inventors
- 👤 R Drury
- 👤 J Hines
- 👤 C Nevin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:23
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08K; C08K3/00; C08K3/18; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/106; C09D11/107; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/064
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |