Patent US2978437A successfully refreshed from Google Patents.
US2978437A
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Water-insoluble condensation products of aldehydes and acrylamide interpolymers
Assignee: PPG Industries Inc
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Filing: 1957-06-12
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Granted: 1961-04-04
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Expires: 1977-06-12
Abstract
No abstract record available.
Inventors
- 👤 Roger M Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:08
CPC Classifications
C; C09; C09D; C09D157/00; C09D157/06; C09D157/12; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/58; C08F8/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A RESINOUS COMPOSITION WHICH IS INSOLUBLE IN WATER, AND WHICH COMPRISES AN INTERPOLYMER OF (A) AN AMIDE SELECTED FROM THE GROUP CONSISTING OF ACRYLAMIDE, METHACRYLAMIDE AND ITACONIC DIAMIDE, (B) A MONOETHYLENICALLY UNSATURATED ALIPHATIC CARBOXYLIC ACID CONSISTING OF ATOMS OF CARBON, HYDROGEN AND OXYGEN, AND (C) AT LEAST ONE OTHER MONOMER CONTAINING A C=CH2 GROUP, SAID INTERPOLYMER CONTAINING FROM ABOUT 5 TO ABOUT 50 PERCENT BY WEIGHT OF SAID AMIDE BASED UPON THE TOTAL WEIGHT OF SAID INTERPOLYMER, AND ABOUT 1 TO ABOUT 30 PERCENT UPON A LIKE BASIS OF SAID MONOETHYLENICALLY UNSATURATED ALIPHATIC CARBOXYLIC ACID, SAID INTERPOLYMER BEING CHARACTERIZED BY HAVING AMIDO HYDROGEN ATOMS REPLACED BY THE STRUCTURE
Claim 2
Dependent Claim
108 words
A RESINOUS COMPOSITION WHICH IS INSOLUBLE IN WATER, AND WHICH COMPRISES AN INTERPOLYMER OF (A) AN AMIDE SELECTED FROM THE GROUP CONSISTING OF ACRYLAMIDE, METHACRYLAMIDE AND ITACONIC DIAMIDE, (B) A MONOETHYLENICALLY UNSATURATED ALIPHATIC CARBOXYLIC ACID CONSISTING OF ATOMS OF CARBON, HYDROGEN AND OXYGEN, AND (C) AT LEAST ONE OTHER MONOMER CONTAINING A C=CH2 GROUP, SAID INTERPOLYMER CONTAINING FROM ABOUT 5 TO ABOUT 50 PERCENT BY WEIGHT OF SAID AMIDE BASED UPON THE TOTAL WEIGHT OF SAID INTERPOLYMER, AND ABOUT 1 TO ABOUT 30 PERCENT UPON A LIKE BASIS OF SAID MONOETHYLENICALLY UNSATURATED ALIPHATIC CARBOXYLIC ACID, SAID INTERPOLYMER BEING CHARACTERIZED BY HAVING AMIDO HYDROGEN ATOMS REPLACED BY THE STRUCTURE
References Cited (Backward Citations)
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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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |