Patent US2854422A successfully refreshed from Google Patents.
US2854422A
Expired / Lapsed
US
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Composition comprising diisocyanatelinked elastomers and lignin
Assignee: Goodrich Corp
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Filing: 1955-02-01
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Granted: 1958-09-30
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Expires: 1975-02-01
Abstract
No abstract record available.
Inventors
- 👤 Robinson F Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:34
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; Y; Y10; Y10S; Y10S273/00; Y10S273/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A COMPOSITION OF MATTER COMPRISING 100 WEIGHT PARTS OF A DIISOCYANATE-LINKED CONDENSATION ELASTOMER COMPRISING ESSENTIALLY THE REACTION PRODUCT OF AN ORGANIC DIISOCYNATE WITH A MATERIAL HAVING A MOLECULAR WEIGHT OF FROM ABOUT 800 TO 5,000 AND BEING SELECTED FROM THE GROUP CONSISTING OF A POLYESTER HAVING ESSENTIALLY A PLURALITY OF ESTER LINKAGES IN THE MAIN POLYMER CHAIN AND BEING OBTAINED BY CONDENSATION REACTION OF A DICARBOXYLIC ALIPHATIC ACID WITH A GLYCOL, A POLYESTERAMIDE HAVING ESSENTIALLY A PLURALITY OF A PREDOMINATING AMOUNT OF ESTER LINKAGES AND A MINOR AMOUNT OF AMIDE LINKAGES IN THE MAIN POLYMER CHAIN AND BEING OBTAINED BY THE CONDENSATION REACTION OF A MIXTURE OF A DICARBOXYLIC ALIPHATIC ACID, A GLYCOL AND AT LEAST ONE ORGANIC AMINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN AMINO ALCOHOL AND A DIAMINE, SAID AMINE COMPOUND BEING PRESENT IN SAID MIXTURE IN AN AMOUNT LESS THAN ONE-HALF THE AMOUNT OF SAID GLYCOL, AND A POLYALKYLENE ETHER GLYCOL HAVING ESSENTIALLY A PLURALITY OF ETHER LINKAGES IN THE MAIN POLYMER CHAIN AND, AS THE ESSENTIAL FILLER, ABOUT 1 TO ABOUT 50 WEIGHT PARTS OF A FINELY DIVIDED LIGNIN HAVING A FUSION POINT OF GREATER THAN ABOUT 250*F.
Claim 2
Dependent Claim
194 words
A COMPOSITION OF MATTER COMPRISING 100 WEIGHT PARTS OF A DIISOCYANATE-LINKED CONDENSATION ELASTOMER COMPRISING ESSENTIALLY THE REACTION PRODUCT OF AN ORGANIC DIISOCYNATE WITH A MATERIAL HAVING A MOLECULAR WEIGHT OF FROM ABOUT 800 TO 5,000 AND BEING SELECTED FROM THE GROUP CONSISTING OF A POLYESTER HAVING ESSENTIALLY A PLURALITY OF ESTER LINKAGES IN THE MAIN POLYMER CHAIN AND BEING OBTAINED BY CONDENSATION REACTION OF A DICARBOXYLIC ALIPHATIC ACID WITH A GLYCOL, A POLYESTERAMIDE HAVING ESSENTIALLY A PLURALITY OF A PREDOMINATING AMOUNT OF ESTER LINKAGES AND A MINOR AMOUNT OF AMIDE LINKAGES IN THE MAIN POLYMER CHAIN AND BEING OBTAINED BY THE CONDENSATION REACTION OF A MIXTURE OF A DICARBOXYLIC ALIPHATIC ACID, A GLYCOL AND AT LEAST ONE ORGANIC AMINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN AMINO ALCOHOL AND A DIAMINE, SAID AMINE COMPOUND BEING PRESENT IN SAID MIXTURE IN AN AMOUNT LESS THAN ONE-HALF THE AMOUNT OF SAID GLYCOL, AND A POLYALKYLENE ETHER GLYCOL HAVING ESSENTIALLY A PLURALITY OF ETHER LINKAGES IN THE MAIN POLYMER CHAIN AND, AS THE ESSENTIAL FILLER, ABOUT 1 TO ABOUT 50 WEIGHT PARTS OF A FINELY DIVIDED LIGNIN HAVING A FUSION POINT OF GREATER THAN ABOUT 250*F.
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) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |