US3235518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reacting a reactive hydrogen compound and an isocyanate in the presence of an organic antimony, arsenic or bismuth catalyst
Assignee: Union Carbide Corp
•
Filing: 1963-09-30
•
Granted: 1966-02-15
•
Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Hostettler Fritz
- 👤 Eugene F Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:48
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/227; B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/122; C07; C07F; C07F9/00; C08G18/70; C08G18/72; C08G18/77; B01J2231/00; B01J2231/30; B01J2231/34; B01J2231/341
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
METHOD WHICH COMPRISES REACTING AN ORGANIC COMPOUND CONTAINING A REACTIVE -N=C=Y GROUP IN WHICH Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR WITH A SUBSTANCE HAVING REACTIVE HYDROGEN AS DETERMINED BY THE ZEREWITINOFF METHOD IN THE PRESENCE OF A CATALYTIC AMOUNT OF AN ORGANIC COMPOUND OF THE ARSENIC FAMILY, SAID COMPOUND HAVING A DIRECT BOND BETWEEN CARBON AND AN ATOM SELECTED FROM THE GROUP CONSISTING OF ARSENIC, ANTIMONY AND BISMUTH.
Claim 2
Dependent Claim
75 words
METHOD WHICH COMPRISES REACTING AN ORGANIC COMPOUND CONTAINING A REACTIVE -N=C=Y GROUP IN WHICH Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR WITH A SUBSTANCE HAVING REACTIVE HYDROGEN AS DETERMINED BY THE ZEREWITINOFF METHOD IN THE PRESENCE OF A CATALYTIC AMOUNT OF AN ORGANIC COMPOUND OF THE ARSENIC FAMILY, SAID COMPOUND HAVING A DIRECT BOND BETWEEN CARBON AND AN ATOM SELECTED FROM THE GROUP CONSISTING OF ARSENIC, ANTIMONY AND BISMUTH.
Claim 3
Dependent Claim
102 words
METHOD WHICH COMPRISES REACTING AN ORGANIC COMPOUND CONTAINING A REACTIVE -N=C=Y GROUP IN WHICH Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR WITH A COMPOUND CONTAINING AN ACTIVE HYDROGEN ATOM AS DETERMINED BY THE ZEREWITINOFF METHOD IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST COMPOSITION COMPRISING A TERTIARY AMINE AND AN ORGANIC COMPOUND OF THE ARSENIC FAMILY SAID COMPOUND HAVING A DIRECT BOND BETWEEN CARBON AND AN ATOM SELECTED FROM THE GROUP CONSISTING OF ARSENIC, ANTIMONY AND BISMUTH WHEREIN THE MOLAR CONCENTRATION RATIOS OF ORGANO METAL COMPOUND AND TERTIARY AMINE VARIES FROM 100:1 TO 1:10,000.
Claim 4
Dependent Claim
102 words
METHOD WHICH COMPRISES REACTING AN ORGANIC COMPOUND CONTAINING A REACTIVE -N=C=Y GROUP IN WHICH Y IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR WITH A COMPOUND CONTAINING AN ACTIVE HYDROGEN ATOM AS DETERMINED BY THE ZEREWITINOFF METHOD IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST COMPOSITION COMPRISING A TERTIARY AMINE AND AN ORGANIC COMPOUND OF THE ARSENIC FAMILY SAID COMPOUND HAVING A DIRECT BOND BETWEEN CARBON AND AN ATOM SELECTED FROM THE GROUP CONSISTING OF ARSENIC, ANTIMONY AND BISMUTH WHEREIN THE MOLAR CONCENTRATION RATIOS OF ORGANO METAL COMPOUND AND TERTIARY AMINE VARIES FROM 100:1 TO 1:10,000.
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |