Pressure sensitive adhesive compositions
Abstract
Abstract PRESSURE SENSITIVE ADHESIVES ARE MADE FROM OLEFINICALLY UNSATURATED ELASTOMERS OR BLENDS OF TWO OR MORE SUCH ELASTOMERS, CONTAINING BETWEEN ABOUT 0.1 AND ABOUT 3.5 MOL PERCENT OF SULFO OR THIOURONIUM GROUPS, EITHER UNNEUTRALIZED, PARITALLY, OR FULLY NEUTRALIZED WITH ORGANIC AMINES OR INORGANIC BASES, WHICH CAN BE ADMIXED WITH NORMALLY LIQUID, BUT VISCOUS, OR SOLID, CONVENTIONAL TACKIFIERS, I.E. LOW MOLECULAR WEIGHT POLYISOBUTYLENE, POLYBUTENES, ROSIN ESTERS, HYDROGENATED ROSIN METHYL ESTTERS, PETROLEUM RESINS, ETC. IN AN AMOUNT BETWEEN ABOUT 10 AND ABOUT 150 PHR. THESE ADHESIVES CAN BE DISSOLVED AT ABOUT 10 TO ABOUT 30 WT. PERCENT TOTAL SOLIDS IN CONVENTIONAL ORGANIC SOLVENTS, E.G. TOLUENE PLUS ISOPROPYL ALCOHOL, AND APPLIED TO SHEETS OR TAPES OF CLOTH, PLASTICS, CELLOPHANE, PAPER, POLYESTER FILMS, ETC. AND DRIED TO REMOVE SOLVENT LEAVING AN ADHESIVE FILM OF 1.0 TO 2.5 MILS IN THICKNESS PRESSURE SENSITIVE ADHESIVE TAPES AND SHEETINGS HAVING AN EXCELLENT BALANCE OF HOLD AND TACK PROPERTIES AND HAVING GOOD RESISTANCE TO COLD FLOW ARE PRODUCED.
Inventors
- 👤 A Berejka
- 👤 L Drexler
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |