Dextrin-clay-silicate adhesive
Abstract
Abstract An adhesive composition in the form of a stable dispersion, and comprising of a mixture of about 80-92 percent of an aqueous alkali metal silicate, about 1.5-6 percent dextrin or modified dextrin, and about 4.5-12 percent of a clay slurry. The clay slurry is formed by blending from about 0.25 to about 1.0 parts of a swelling type clay, from 0 to about 1.0 parts by weight of a kaolin type clay, and 6 parts by weight of water. The novel compositions are prepared by heating a mixture of the alkali metal silicate and the clay slurry to a temperature of about 160*F., then adding the dextrin and maintaining the mixture at about 160*F. for a period of at least 10 minutes after all of the dextrin has been added. The novel compositions may also contain additional kaolin type clay and/or a small amount of starch, as well as stabilizers and viscosity control agents of the type well known to those skilled in the art.
Inventors
- 👤 D Olix
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |