US3272647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy terminated polyester complexes, coating compositions containing same and metal ubstrates coated therewith
Assignee: EIDP Inc
•
Filing: 1962-03-23
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Granted: 1966-09-13
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Expires: 1982-03-23
Abstract
No abstract record available.
Inventors
- 👤 Ralph G Swanson
- 👤 Aloysius N Walus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:12
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/182; C08G59/186; C08G59/02; C08G59/12; C08G59/40; C08G59/42; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31786
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
80 words
THE PROCESS OF PREPARING AN EPOXY TERMINATED POLYESTER COMPRISING: (A) REACTING ONE EPOXY EQUIVALENT WEIGHT OF A SOLID EPOXY RESIN WHICH IS THE REACTION PRODUCT OF EPICHLOREHYDRIN AND BISPHENOL PROPANE AND TWO CARBOXYL EQUIVALENT WEIGHTS OF POLYMERIZED FATTY ACID TO PROVIDE A CARBOXYL TERMINATED PREPOLYMER, (B) REACTING ONE CARBOXYL EQUIVALENT WEIGHT OF SAID PREPOLYMER WITH TWO EPOXY EQUIVALENT WEIGHTS OF A LIQUID EPOXY RESIN WHICH IS THE REACTION PRODUCT OF EPICHLOROHYDRIN AND BISPHENOL PROPANE TO PROVIDE AN EPOXY TERMINATED POLYESTER.
Claim 2
Dependent Claim
80 words
THE PROCESS OF PREPARING AN EPOXY TERMINATED POLYESTER COMPRISING: (A) REACTING ONE EPOXY EQUIVALENT WEIGHT OF A SOLID EPOXY RESIN WHICH IS THE REACTION PRODUCT OF EPICHLOREHYDRIN AND BISPHENOL PROPANE AND TWO CARBOXYL EQUIVALENT WEIGHTS OF POLYMERIZED FATTY ACID TO PROVIDE A CARBOXYL TERMINATED PREPOLYMER, (B) REACTING ONE CARBOXYL EQUIVALENT WEIGHT OF SAID PREPOLYMER WITH TWO EPOXY EQUIVALENT WEIGHTS OF A LIQUID EPOXY RESIN WHICH IS THE REACTION PRODUCT OF EPICHLOROHYDRIN AND BISPHENOL PROPANE TO PROVIDE AN EPOXY TERMINATED POLYESTER.
Claim 3
Dependent Claim
20 words
THE PROCESS OF CLAIM 1 IN WHICH THE POLYMERIZED FATTY ACID IS A MIXUTRE OF DIMER AND TRIMER FATTY ACIDS.
Claim 4
Dependent Claim
8 words
A PRODUCT OF THE PROCESS OF CLAIM 3.
Claim 5
Dependent Claim
60 words
A COATING COMPOSITION COMPRISING: (A) AN EPOXY ACRYLIC POLYMER DERIVED FROM ABOUT 88-93% OF A LOWER ALKYL METHACRYLATE, UP TO 10% OF A LOWER ALKYL ACRYLATE, AND 2-7% OF A MATERIAL SELECTED FROM THE CLASS CONSISTING OF GLYCIDYL METHACRYLATE AND GLYCIDYL ACRYLATE, (B) AN EPOXY TERMINATED POLYESTER DEFINED IN CLAIM 4, AND (C) A CROSS-LINKING AGENT FOR (A) AND (B).
Claim 6
Dependent Claim
50 words
A METAL SUBSTRATE PRIMED WITH THE COMPOSITION OF CLAIM 5 AND SURFACE COATED WITH A COMPOSITION CONTAINING AS THE ESSENTIAL FILM FORMER A MATERIAL SELECTED FROM THE CLASS CONSISTING OF (A) A POLYMETHYL METHACRYLATE, (B) MIXTURE OF SOYA OIL MODIFIED GLYCERYL PHTHALATE RESIN AND BUTYLATED UREA-FORMALDEHYDE RESIN, AND (C) NITROCELLULOSE.
References Cited (Backward Citations)
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US2970983A
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US2992132A
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US2970231A
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |