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US3785935A
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Distillation process of monomers with the addition of an antifoam composition
Assignee: Dow Silicones Corp
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Filing: 1971-05-17
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Granted: 1974-01-15
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Expires: 1991-05-17
Abstract
Abstract AN ANTIFOAM COMPOSITION WHICH CONSISTS ESSENTIALLY OF (1) 5 TO 50 PERCENT BY WEIGHT OF A SILICONE-GLYCOL COPOLYMER, (2) 5 TO 50 PERCENT BY WEIGHT OF A POLYPROPYLENE GLYCOL, (3) 5 TO 50 PERCENT BY WEIGHT OF A GLYCOL COPOLYMER, AND (4) 40 TO 85 PERCENT BY WEIGHT OF WATER IS DISCLOSED. THIS COMPOSITION IS PARTICULARLY USEFUL IN LATEXES.
Inventors
- 👤 K Householder
- 👤 V Doesburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:18
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/02; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; C08C; C08C1/00; C08C1/02; C08C1/04; C08L83/00; C08L83/10; C08L83/12
Claims Analysis
Total Claims: 0
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References 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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |