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US4617408A
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Modified titanium (IV) acetylacetonates
Assignee: Dynamit Nobel AG
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Filing: 1985-03-18
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Granted: 1986-10-14
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Expires: 2005-03-18
Abstract
Abstract The present invention relates to new titanium chelates containing both acetylacetone and malonic acid dialkyl ester as chelating agents. The acetylacetone moiety is contained in these new chelates in amounts between 1.25 and 1.95 moles and the malonic acid dialkyl ester moiety in amounts between 0.05 and 0.75 moles per gram-atom of titanium. The new chelates have the same properties as the known titanium acetylacetonates; however, they have the advantage that they are only slightly yellow and in many applications they have an improved stability.
Inventors
- 👤 Heinz Nestler
- 👤 Dieter Barfurth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:57
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C07; C07F; C07F7/00; C07F7/003
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
A dialkoxy titanium(IV) acetylacetonate chelate containing 0.05 to 0.75 moles of a malonic acid dialkyl ester moiety per gram-atom of titanium, the malonic acid dialkyl ester moiety being of the formulas ROOC--CR'R'--COOR, or (ROOC) 2 C═CH--OR wherein R represents alike or different alkyl moieties of 1 to 4 carbon atoms, and R' represents H or R.
Claim 2
Dependent Claim
56 words
A dialkoxy titanium(IV) acetylacetonate chelate containing 0.05 to 0.75 moles of a malonic acid dialkyl ester moiety per gram-atom of titanium, the malonic acid dialkyl ester moiety being of the formulas ROOC--CR'R'--COOR, or (ROOC) 2 C═CH--OR wherein R represents alike or different alkyl moieties of 1 to 4 carbon atoms, and R' represents H or R.
Claim 3
Dependent Claim
9 words
The chelate of claim 1, wherein R is ethyl.
Claim 4
Dependent Claim
101 words
A method of preparing the dialkoxy titanium(IV)acetylacetonates of claim 1, comprising reacting a tetraalkyltitanate with so much acetylacetone and malonic acid dialkyl esters of the formula ROOC--CR'--CR'--COOR, wherein R represents the same or different alkyl moieties of 1 to 4 carbon atoms and R' represents H or R, that, for each gram-atom of titanium, 1.25 to 1.95 moles of acetyl acetone and 0.75 to 0.05 moles of malonic acid dialkyl ester are used, and the sum of the number of moles of acetylacetone and the number of moles of malonic acid dialkyl ester amounts to 2 moles per gram-atom of titanium.
Claim 5
Dependent Claim
9 words
The method of claim 3, wherein R is ethyl.
Claim 6
Dependent Claim
20 words
The method of claim 3 wherein 1.5 to 1.75 moles of acetyl acetone are used for each gram-atom of titanium.
Claim 7
Dependent Claim
23 words
The method of claim 3 wherein 0.5 to 0.25 moles of malonic acid and dialkyl ester are used for each gram-atom of titanium.
Claim 8
Dependent Claim
22 words
The method of claim 5 wherein 0.5 to 0.25 moles of malonic acid dialkyl ester are used for each gram-atom of titanium.
Claim 9
Dependent Claim
9 words
The method of claim 5 wherein R is ethyl.
Claim 10
Dependent Claim
9 words
The method of claim 6 wherein R is ethyl.
Claim 11
Dependent Claim
9 words
The method of claim 7 wherein R is ethyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |