US4113757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium compounds
Assignee: Tioxide Group Ltd
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Filing: 1977-03-03
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Granted: 1978-09-12
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Expires: 1997-03-03
Abstract
Abstract A titanium chelate being the reaction product of ethylene glycol titanate, propylene glycol titanate, diethylene glycol titanate or hexylene glycol titanate and lactic acid, alpha-hydroxy-butyric acid, citric acid or glyceric acid. The chelates are particularly useful for gelling hydroxyl polymers such as polyvinyl alcohol in the form of solutions.
Inventors
- 👤 Peter Dunlop Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:16
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/01; C08; C08K; C08K5/00; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A titanium chelate comprising a reaction product of an alpha-hydroxy acid selected from the class consisting of lactic acid, alpha-hydroxy butyric acid, citric acid and glyceric acid and a titanate selected from the class consisting of ethylene glycol titanate, propylene glycol titanate, diethylene glycol titanate and hexylene glycol titanate.
Claim 2
Dependent Claim
49 words
A titanium chelate comprising a reaction product of an alpha-hydroxy acid selected from the class consisting of lactic acid, alpha-hydroxy butyric acid, citric acid and glyceric acid and a titanate selected from the class consisting of ethylene glycol titanate, propylene glycol titanate, diethylene glycol titanate and hexylene glycol titanate.
Claim 3
Dependent Claim
26 words
A titanium chelate according to claim 1 in which from 1 to 3 moles of said alpha-hydroxy acid are present per mole of said glycol titanate.
Claim 4
Dependent Claim
24 words
A titanium chelate according to claim 1 in which 2 moles of said alpha-hydroxy acid are present per mole of said particular glycol titanate.
References 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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |