US3200172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moulding compositions comprising epoxidized novolak, novolak and amine
Assignee: BASF Schweiz AG
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Filing: 1959-11-18
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Granted: 1965-08-10
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Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Renner Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:47
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/08; C08L; C08L63/00; C08L63/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A THERMO-SETTING MOULDING COMPOSITION CONTAINING (A) A SOLID POLYGLYCIDYL ETHER OF A NOVOLAK OBTAINED BY CONDENSING UNDER ACID CONDITIONS ONE MOLECULAR PROPORTION OF PHENOL WITH MORE THAN 0.8 MOLECULAR PROPORTION AND NOT EXCEEING ABOUT ONE MOLECULAR PROPORTION OF FORMALDEHYDE, SAID NOVOLAK BEING PREPARED SOLELY FROM SAID REAGENTS AND COMPLETELY FREED FROM ANY UNREACTED PHENOL PRIOR TO ITS ETHERIFICATION, (B) A PHENOL-FORMALDEHYDE CONDENSATION PRODUCT OBTAINED BY CONDENSATION UNDER ACID CONDITIONS, AND (C) A NITROGEN BASE AS CURING ACCELERATOR.
Claim 2
Dependent Claim
77 words
A THERMO-SETTING MOULDING COMPOSITION CONTAINING (A) A SOLID POLYGLYCIDYL ETHER OF A NOVOLAK OBTAINED BY CONDENSING UNDER ACID CONDITIONS ONE MOLECULAR PROPORTION OF PHENOL WITH MORE THAN 0.8 MOLECULAR PROPORTION AND NOT EXCEEING ABOUT ONE MOLECULAR PROPORTION OF FORMALDEHYDE, SAID NOVOLAK BEING PREPARED SOLELY FROM SAID REAGENTS AND COMPLETELY FREED FROM ANY UNREACTED PHENOL PRIOR TO ITS ETHERIFICATION, (B) A PHENOL-FORMALDEHYDE CONDENSATION PRODUCT OBTAINED BY CONDENSATION UNDER ACID CONDITIONS, AND (C) A NITROGEN BASE AS CURING ACCELERATOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |