Patent US1412514A successfully refreshed from Google Patents.
US3006897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diisocyanate-modified acid-treated polyesters
Assignee: Armstrong World Industries Inc
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Filing: 1958-11-07
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Granted: 1961-10-31
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Expires: 1978-11-07
Abstract
No abstract record available.
Inventors
- 👤 John A Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:58
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/68; C08G18/40; C08G18/42; C08G18/4263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
IN THE METHOS OF MAKING AN ORGANIC DIISOCYANATEMODIFIED POLYESTER WHEREIN AN INMODIFIED POLYESTER PREPARED FROM AT LEAST ONE DICARBOXYLIC ACID AND AT LEAST ONE GLYCOL IS REACTED WITH AN ORGANIC DIISOCYANATE, SAID UNMODIFIED POLYESTER HAVING AN ACID NUMBER IN THE RANGE OF 0-10, A HYDROXYL NUMBER IN THE RANGE OF 20-100 AND A NUMBER AVERAGE MOLECULAR WEIGHT IN THE RANGE OF 2000-4500, THE IMPROVED METHOD OF MAKING A GELLED PRODUCT HAVING A REAL, THREE-DIMENSIONAL NETWORK WHICH COMPRISES ADDING TO SAID UNMODIFIED POLYESTER AN ALPHABETA ETHYLENICALLY UNSATURATED COMPOUND HAVING 4-5 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF MALEIC ACID, FUMARIC ACID, CITRACONIC ACID, ITACONIC ACID, AND ANHYDRIDES THEREOF IN AN AMOUNT OF 0.03-0.5 MOLES OF SAID COMPOUND PER MOLE OF SAID UNMODIFIED POLYESTER MAINTAINING THE MIXTURE OF SAID COMPOUND AND SAID UNMODIFIED POLYESTER AT A TEMPERATURE IN THE RANGE OF 20*115*C. TO CAUSE A CARBOXYL GROUP ON SAID COMPOUND TO REACT WITH HYDROXYL GROUP ON SAID POLYESTER AND FORM A CARBOXYLIC-ACID-TERMINATED POLYESTER, AND SUBSEQUENTLY ADDING THE RANGE OF 80*-150*C. AN ORGANIC ORAMATIC DITHE RANGE OF 80*-150*C. AN ORGANIC AROMATIC DIISOCYANATE IN AN AMOUNT OF 0.6-1 EQUIVALENTS PER EQUIVALENT OF SAID ACID-TERMINATED POLYESTER AT LEAST SUFFICIENT TO FORM A GEL HAVING A REAL, THREE-DIMENTIONAL NETWORK
Claim 2
Dependent Claim
204 words
IN THE METHOS OF MAKING AN ORGANIC DIISOCYANATEMODIFIED POLYESTER WHEREIN AN INMODIFIED POLYESTER PREPARED FROM AT LEAST ONE DICARBOXYLIC ACID AND AT LEAST ONE GLYCOL IS REACTED WITH AN ORGANIC DIISOCYANATE, SAID UNMODIFIED POLYESTER HAVING AN ACID NUMBER IN THE RANGE OF 0-10, A HYDROXYL NUMBER IN THE RANGE OF 20-100 AND A NUMBER AVERAGE MOLECULAR WEIGHT IN THE RANGE OF 2000-4500, THE IMPROVED METHOD OF MAKING A GELLED PRODUCT HAVING A REAL, THREE-DIMENSIONAL NETWORK WHICH COMPRISES ADDING TO SAID UNMODIFIED POLYESTER AN ALPHABETA ETHYLENICALLY UNSATURATED COMPOUND HAVING 4-5 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF MALEIC ACID, FUMARIC ACID, CITRACONIC ACID, ITACONIC ACID, AND ANHYDRIDES THEREOF IN AN AMOUNT OF 0.03-0.5 MOLES OF SAID COMPOUND PER MOLE OF SAID UNMODIFIED POLYESTER MAINTAINING THE MIXTURE OF SAID COMPOUND AND SAID UNMODIFIED POLYESTER AT A TEMPERATURE IN THE RANGE OF 20*115*C. TO CAUSE A CARBOXYL GROUP ON SAID COMPOUND TO REACT WITH HYDROXYL GROUP ON SAID POLYESTER AND FORM A CARBOXYLIC-ACID-TERMINATED POLYESTER, AND SUBSEQUENTLY ADDING THE RANGE OF 80*-150*C. AN ORGANIC ORAMATIC DITHE RANGE OF 80*-150*C. AN ORGANIC AROMATIC DIISOCYANATE IN AN AMOUNT OF 0.6-1 EQUIVALENTS PER EQUIVALENT OF SAID ACID-TERMINATED POLYESTER AT LEAST SUFFICIENT TO FORM A GEL HAVING A REAL, THREE-DIMENTIONAL NETWORK
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) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |