US3118922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing organic isocyanates
Assignee: Bayer AG
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Filing: 1960-03-02
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Granted: 1964-01-21
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Expires: 1980-03-02
Abstract
No abstract record available.
Inventors
- 👤 Hartung Sigurd
- 👤 Klauke Erich
- 👤 Schwarz Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:07
CPC Classifications
C; C07; C07C; C07C263/00; C07C263/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A PROCESS FOR THE PREPARATION OF AN ALIPHATIC SUBSTITUTED AROMATIC ISOCYANATE WHICH COMPRISES: REACTING IN THE PRESENCE OF HYDROFLUORIC ACID, AN ALIPHATIC ETHYLENICALLY UNSATURATED ORGANIC COMPOUND WITH AN ISOCYANATE, SAID HYDROFLUORIC ACID BEING PRESENT IN AN AMOUNT OF AT LEAST AN EQUIMOLAR AMOUNT TO SAID ISOCYANATE USED; SAID ALIPHATIC ETHYLENICALLY UNSATURATED ORGANIC COMPOUND CONTAINING UP TO ABOUT 18 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF ETHYLENICALLY UNSATURATED ALIPHATIC HYDROCARBONS, AND SUBSTITUTED ETHYLENICALLY UNSATURATED ALIPHATIC HYDROCARBONS, WHEREIN THE SUBSTITUENTS ARE SELECTED FROM THE GROUP CONSISTING OF NITRO GROUPS, CHLORINE ATOMS, LOWER CARBOALKOXY GROUPS AND LOWER ALKOXY GROUPS; SAID ISOCYANATE BEING AN ARYL ISOCYANATE WHEREIN THE ISOCYANATO RADICAL IS LINKED DIRECTLY TO THE NUCLEUS, SAID NUCLEUS BEING SUBSTIKTUTED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE AND LOWER ALKYL.
Claim 2
Dependent Claim
132 words
A PROCESS FOR THE PREPARATION OF AN ALIPHATIC SUBSTITUTED AROMATIC ISOCYANATE WHICH COMPRISES: REACTING IN THE PRESENCE OF HYDROFLUORIC ACID, AN ALIPHATIC ETHYLENICALLY UNSATURATED ORGANIC COMPOUND WITH AN ISOCYANATE, SAID HYDROFLUORIC ACID BEING PRESENT IN AN AMOUNT OF AT LEAST AN EQUIMOLAR AMOUNT TO SAID ISOCYANATE USED; SAID ALIPHATIC ETHYLENICALLY UNSATURATED ORGANIC COMPOUND CONTAINING UP TO ABOUT 18 CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF ETHYLENICALLY UNSATURATED ALIPHATIC HYDROCARBONS, AND SUBSTITUTED ETHYLENICALLY UNSATURATED ALIPHATIC HYDROCARBONS, WHEREIN THE SUBSTITUENTS ARE SELECTED FROM THE GROUP CONSISTING OF NITRO GROUPS, CHLORINE ATOMS, LOWER CARBOALKOXY GROUPS AND LOWER ALKOXY GROUPS; SAID ISOCYANATE BEING AN ARYL ISOCYANATE WHEREIN THE ISOCYANATO RADICAL IS LINKED DIRECTLY TO THE NUCLEUS, SAID NUCLEUS BEING SUBSTIKTUTED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CHLORINE AND LOWER ALKYL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |