Dispersing agents
Abstract
Abstract A DISPERSANT COMPRISING THE REACTION PRODUCT OF (A) A COMPOUND OF THE FORMULA: FIG:01 WHEREIN AR IS AN AROMATIC GROUP, N IS O 1, FROM 2 TO 3 R GROUPS ARE INDIVIDUALLY HYDROGEN, METHYL AND ETHYL AND THE REMAINING R GROUP OR GROUPS INDIVIDUALLY OR THE REMAINING GROUP R-C-C-R IN COMBINATION PROVIDES A SOLVATABLE CHAIN-LIKE COMPONENT OF AT LEAST 12 LINKS, OR (B) AN ADDITION POLYMER COMPOUND WHICH IS SOLVATED BY AN ORGANIC LIGUID AND WHICH CONTAIN AT LEAST ONE GROUP OF THE FORMULA: HO-X-COO-CH2-CH(-OH)- WHEREIN X IS AN ALIPHATIC RADICAL WHICH OPTIONALLY CONTAINS AN ADDITIONAL HYDROXY GROUP OR GROUPS, WITH AN ORGANIC MONOISOCYANATE OR WITH AN ORGANIC DIISOCYANATE WHICH HAS ALREADY BEEN OR IS SIMULTANEOUSLY OR SUBSEQUENTLY REACTED WITH AN ALCOHOL OR AMINE SO THAT IN EFFECT IT BEHAVES AS A MONOISOCYANATE AND THE USE OF THE SAID DISPERSANT FOR PREPARING DISPERSIONS OF SOLIDS IN ORGANIC LIQUIDS.
Inventors
- 👤 M Backhouse
- 👤 A Topham
- 👤 B Tury
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |