US3336398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal reaction of dienes with phenols to produce unsaturated alkyl phenols
Assignee: Hercules LLC
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Filing: 1964-02-24
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Granted: 1967-08-15
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Albert B Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:05
CPC Classifications
C; C08; C08F; C08F232/00; C08F232/08; C08L; C08L45/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
THE METHOD FOR PRODUCING A POLYMERIC PHENOLIC RESIN WHICH COMPRISES HEATING AN ORTHO-ALKYLATABLE PHENOL AND DICYCLOPENTADIENE IN THE ABSENCE OF A CATALYST AT A TEMPERATURE OF ABOUT 200-260*C.
Claim 2
Independent Claim
28 words
THE METHOD FOR PRODUCING A POLYMERIC PHENOLIC RESIN WHICH COMPRISES HEATING AN ORTHO-ALKYLATABLE PHENOL AND DICYCLOPENTADIENE IN THE ABSENCE OF A CATALYST AT A TEMPERATURE OF ABOUT 200-260*C.
Claim 3
Dependent Claim
67 words
A PHENOLIC RESIN HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE OF ABOUT 300 TO ABOUT 400, PRODUCED BY REACTING SUBSTANTIALLY EQUAL MOLECULAR AMOUNTS OF AT LEAST ONE ORTHO-ALKYLATABLE PHENOL OF THE GROUP CONSISTING OF PHENOL, CRESOLS, ISOPROPYLPHENOIS, T-BUTYLPHENOIS, XYLENOIS, M- AND P-HALOPHENOLS AND M- AND P-HALOCRESOLS, WHERE HALO IS CHLORO OR BROMO, AND DICYCLOPENTADIENE IN THE ABSENCE OF A CATALYST, AT A TEMPERATURE OF ABOUT 200260*C.
Claim 4
Dependent Claim
67 words
A PHENOLIC RESIN HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE OF ABOUT 300 TO ABOUT 400, PRODUCED BY REACTING SUBSTANTIALLY EQUAL MOLECULAR AMOUNTS OF AT LEAST ONE ORTHO-ALKYLATABLE PHENOL OF THE GROUP CONSISTING OF PHENOL, CRESOLS, ISOPROPYLPHENOIS, T-BUTYLPHENOIS, XYLENOIS, M- AND P-HALOPHENOLS AND M- AND P-HALOCRESOLS, WHERE HALO IS CHLORO OR BROMO, AND DICYCLOPENTADIENE IN THE ABSENCE OF A CATALYST, AT A TEMPERATURE OF ABOUT 200260*C.
References Cited (Backward Citations)
US2864868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |