US2995531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable coating compositions containing a polyisocyanate and a polyamide
Assignee: Bayer Corp
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Filing: 1958-09-08
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Granted: 1961-08-08
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Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 George A Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/8064; C08G18/28; C08G18/40; C08G18/60; C08G18/603; C09; C09D; C09D177/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF MAKING A STORAGE STABLE, WATER EMULSION, COATING COMPOSITION WHICH COMPRISES ADMIXING A MINOR, AMOUNT OF GLACIAL ACETIC ACID WITH A POLYAMIDE CONTAINING A MEMBER SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY AMINO GROUPS, SAID POLYAMIDE HAVING A MOLECULAR WEIGHT OF FROM ABOUT 1,000 TO ABOUT 10,000 WITH AN ADDUCT PREPARED BY REACTING AN EXCESS OF A MONOHYDRIC ALCOHOL WITH AN ORGANIC POLYISOCYANATE, SO THAT THE RATIO OF THE URETHANE GROUPS IN SAID ADDUCT TO THE ACTIVE AMINO GROUPS IN SAID ORGANIC COMPOUND IS FROM ABOUT 0.5 TO ABOUT 2.0, AND MIXING THE AFORESAID MIXTURE WITH WATER TO FORM AN AQUEOUS EMULSION.
Claim 2
Independent Claim
106 words
A METHOD OF MAKING A STORAGE STABLE, WATER EMULSION, COATING COMPOSITION WHICH COMPRISES ADMIXING A MINOR, AMOUNT OF GLACIAL ACETIC ACID WITH A POLYAMIDE CONTAINING A MEMBER SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY AMINO GROUPS, SAID POLYAMIDE HAVING A MOLECULAR WEIGHT OF FROM ABOUT 1,000 TO ABOUT 10,000 WITH AN ADDUCT PREPARED BY REACTING AN EXCESS OF A MONOHYDRIC ALCOHOL WITH AN ORGANIC POLYISOCYANATE, SO THAT THE RATIO OF THE URETHANE GROUPS IN SAID ADDUCT TO THE ACTIVE AMINO GROUPS IN SAID ORGANIC COMPOUND IS FROM ABOUT 0.5 TO ABOUT 2.0, AND MIXING THE AFORESAID MIXTURE WITH WATER TO FORM AN AQUEOUS EMULSION.
References Cited (Backward Citations)
DE895527C
Cited
US2512634A
Cited
US2675369A
Cited
FR1108785A
Cited
US2864780A
Cited
US2824848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |