US2888437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1956-11-20
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Granted: 1959-05-26
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Expires: 1976-11-20
Abstract
No abstract record available.
Inventors
- 👤 Anthony F Finelli
- 👤 Nelson V Seeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:51
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/088; C08G18/0885; C08G18/16; C08G18/22; C08G18/222; C08G18/225; C08G18/70; C08G18/72; C08G18/74; C08G18/76; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF CATALYZING THE REACTION BETWEEN (A) A DIISCYANATE SELECTED FROM THE GROUP CONSISTING OF TOLYLENE DIISOCYANATE AND 3,3''-DIMETHYL 4,4''-DIPHENYL DIISOCYANATE AND (B) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENE ETHER GLYCOLS AND HYDROXYLTERMINATED POLYESTERS, SAID POLYESTERS BEING PREPARED FROM AT LEAST ONE DICARBOXKYLIC ACID AND AT LEAST ONE GLYCOL, SAID MATERIAL HAVING A MOLECULAR WEIGHT RANGING FROM 1000 TO 300 AND AN ACID NUMBER NOT GRAEATER THAN 5 WHICH COMPRISES HEATING SAID MATERIAL FOR FROM 30 TO 60 MINUTES AT A TEMPERATURE OF FROM APPROXIMATELY 125 TO 145* C. IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM OXIDE AND BARIUM OXIDE AND SUBSEQUENTLY ADDING SAID DIISOCYANATE TO SAID MATERIAL.
Claim 2
Independent Claim
118 words
THE METHOD OF CATALYZING THE REACTION BETWEEN (A) A DIISCYANATE SELECTED FROM THE GROUP CONSISTING OF TOLYLENE DIISOCYANATE AND 3,3''-DIMETHYL 4,4''-DIPHENYL DIISOCYANATE AND (B) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENE ETHER GLYCOLS AND HYDROXYLTERMINATED POLYESTERS, SAID POLYESTERS BEING PREPARED FROM AT LEAST ONE DICARBOXKYLIC ACID AND AT LEAST ONE GLYCOL, SAID MATERIAL HAVING A MOLECULAR WEIGHT RANGING FROM 1000 TO 300 AND AN ACID NUMBER NOT GRAEATER THAN 5 WHICH COMPRISES HEATING SAID MATERIAL FOR FROM 30 TO 60 MINUTES AT A TEMPERATURE OF FROM APPROXIMATELY 125 TO 145* C. IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM OXIDE AND BARIUM OXIDE AND SUBSEQUENTLY ADDING SAID DIISOCYANATE TO SAID MATERIAL.
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) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |