Patent CH93370A successfully refreshed from Google Patents.
Patent US3296156A successfully refreshed from Google Patents.
US3296156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-amino-2-methyl-propanol crosslinking agent for polyurethane process and product
Assignee: Goodyear Tire and Rubber Co
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Filing: 1962-10-01
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Granted: 1967-01-03
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Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Russell Paul Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:40
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
57 words
A POLYURETHANE ELASTOMER COMPRISING THE REACTION PRODUCT OF 1.1 TO ABOUT 4 MOLS OF AN ORGANIC DIISOCYANATE WITH ONE MOL OF A REACTIVE HYDROGEN CONTAINING POLYMERIC MATERIAL HAVING A MOLECULAR WEIGHT OF AT LEAST 500 AND SELECTED FROM THE CLASS CONSISTING OF POLYESTER GLYCOLS, POLYETHER GLYCOLS AND THE POLYESTER AMIDES AND THEN CROSSLINKING WITH A 2-AMINO-2-METHYL PROPANOL.
Claim 2
Dependent Claim
57 words
A POLYURETHANE ELASTOMER COMPRISING THE REACTION PRODUCT OF 1.1 TO ABOUT 4 MOLS OF AN ORGANIC DIISOCYANATE WITH ONE MOL OF A REACTIVE HYDROGEN CONTAINING POLYMERIC MATERIAL HAVING A MOLECULAR WEIGHT OF AT LEAST 500 AND SELECTED FROM THE CLASS CONSISTING OF POLYESTER GLYCOLS, POLYETHER GLYCOLS AND THE POLYESTER AMIDES AND THEN CROSSLINKING WITH A 2-AMINO-2-METHYL PROPANOL.
Claim 3
Dependent Claim
95 words
THE PROCESS FOR MAKING POLYURETHANE ELASTOMERS HAVING A SHORE A HARDNESS LESS THAN ABOUT 75 COMPRISING (1) FORMING A FLUID REACTION MIXTURE WHICH COMPRISES (A) A REACTIVE HYDROGEN CONTAINING POLYMERIC MATERIAL HAVING A MOLECULAR WEIGHT OF AT LEAST 500 AND A HYDROXYL NUMBER GREATER THAN THE ACID NUMBER, (B) AT LEAST A 10% EXCESS OF ORGANIC DIISOCYANATE OVER THE AMOUNT EQUIVALENT TO THE REACTIVE HYDROGEN IN SAID POLYMERIC MATERIALS AND (C) 2-AMINO-2-METHYL PROPANOL, AND (2) THEN CASTING SAID FLUID REACTION MIXTURE INTO A SHAPING MEANS FOR REACTING SAID MIXTURE TO FORM A SOLID CURED ELASTOMER.
Claim 4
Dependent Claim
95 words
THE PROCESS FOR MAKING POLYURETHANE ELASTOMERS HAVING A SHORE A HARDNESS LESS THAN ABOUT 75 COMPRISING (1) FORMING A FLUID REACTION MIXTURE WHICH COMPRISES (A) A REACTIVE HYDROGEN CONTAINING POLYMERIC MATERIAL HAVING A MOLECULAR WEIGHT OF AT LEAST 500 AND A HYDROXYL NUMBER GREATER THAN THE ACID NUMBER, (B) AT LEAST A 10% EXCESS OF ORGANIC DIISOCYANATE OVER THE AMOUNT EQUIVALENT TO THE REACTIVE HYDROGEN IN SAID POLYMERIC MATERIALS AND (C) 2-AMINO-2-METHYL PROPANOL, AND (2) THEN CASTING SAID FLUID REACTION MIXTURE INTO A SHAPING MEANS FOR REACTING SAID MIXTURE TO FORM A SOLID CURED ELASTOMER.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |