Patent US3022273A successfully refreshed from Google Patents.
US3022273A
Expired / Lapsed
US
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Process for improving the color of resins produced from acrolein and pentaerythritol
Assignee: Union Carbide Corp
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Filing: 1959-03-12
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Granted: 1962-02-20
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Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 Howard R Guest
- 👤 Ben W Kiff
- 👤 Calvert B Halstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:03
CPC Classifications
C; C08; C08G; C08G4/00; Y; Y10; Y10S; Y10S273/00; Y10S273/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN THE PROCESS FOR PRODUCING SOLID RESINS BY REACTING ACROLEIN WITH PENTAERYTHRITOL IN A RATIO OF FROM ABOUT 1 TO ABOUT 2 MOLES OF SAID ACROLEIN PER MOLE OF SAID PENTAERTHRITOL, AT A TEMPERATURE OF FROM ABOUT 50*C. TO ABOUT 125*C. AND IN CONTACT WITH AN ACID CATALYST, TO FORM A LIQUID RESIN WHICH IS SUBSEQUENTLY CURED BY HEATING SAID LIQUID RESIN IN CONTACT WITH AN ACID CATALYST, THE IMPROVEMENT WHICH COMPRISES CURING SAID LIQUID RESIN IN CONTACT WITH AN AMOUNT OF PHENYL DICHLOROPHOSPHINE SUFFICIENT TO INHIBIT COLOR FORMATION IN THE RESULTING SOLID RESINOUS PRODUCT.
Claim 2
Dependent Claim
95 words
IN THE PROCESS FOR PRODUCING SOLID RESINS BY REACTING ACROLEIN WITH PENTAERYTHRITOL IN A RATIO OF FROM ABOUT 1 TO ABOUT 2 MOLES OF SAID ACROLEIN PER MOLE OF SAID PENTAERTHRITOL, AT A TEMPERATURE OF FROM ABOUT 50*C. TO ABOUT 125*C. AND IN CONTACT WITH AN ACID CATALYST, TO FORM A LIQUID RESIN WHICH IS SUBSEQUENTLY CURED BY HEATING SAID LIQUID RESIN IN CONTACT WITH AN ACID CATALYST, THE IMPROVEMENT WHICH COMPRISES CURING SAID LIQUID RESIN IN CONTACT WITH AN AMOUNT OF PHENYL DICHLOROPHOSPHINE SUFFICIENT TO INHIBIT COLOR FORMATION IN THE RESULTING SOLID RESINOUS PRODUCT.
References Cited (Backward Citations)
GB568288A
Cited
US2687407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |