Polyurethane adhesive based on an aliphatic and an aromatic polyester
Abstract
Abstract AN ADHESIVE COMPOSITION ESPECIALLY FOR RUBBER, LEATHER, TEXTILES OR PLASTICS AND MOST ESPECIALLY FOR SOFT POLYVINYL CHLORIDE. THE COMPOSITION IS THE REACTION PRODUCT OF A DIISOCYANATE WITH TWO POLYESTERS, ONE OF WHICH IS A BENZENE DICARBOXYLIC ACID ALKYLENE POLYESTER WITH A MOLECULAR WEIGHT UP TO 600, PREFERABLY UP TO 300, WHILE THE OTHER POLYESTER IS EITHER AN ALKANE DIOL POLYCARBONATE OR AN ALKANE DIOL DICARBOXYLIC ACID POLYESTER WITH A MOLECULAR WEIGHT BETWEEN 600 AND 3000, PREFERABLY BETWEEN 1500 AND 2500. THE PREFERRED FIRST POLYESTER IS A POLYESTER MADE FROM PHTHALIC ACID AND ETHYLENE GLYCOL. THE SECOND POLYESTER IS PREFERABLY AN ADIPIC ACID/BUTANE DIOL POLYESTER OR AN ADIPIC ACID/HEXANE DIOL POLYESTER. IF POLYCARBONATE IS EMPLOYED HEXANE-1,6-POLYCARBONATE IS PREFERRED. TOLUYLENE DILSOCYANATE IS THE TYPICAL ISOCYANATE.
Inventors
- 👤 Eugen Bock
- 👤 Manfred Dollhausen
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |