US4057565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-Dialkylaminobenzyl and 2-dialkylaminomethylphenyl derivatives of selected transition metals
Assignee: EIDP Inc
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Filing: 1975-07-22
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Granted: 1977-11-08
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Expires: 1995-07-22
Abstract
Abstract Transition metal compounds of the formulae M.sup.1 A.sub.3 (1) wherein M 1 is scandium, yttrium, chromium, or rare earth metal, and A is 2-dialkylaminobenzyl or 2-dialkylaminomethylphenyl, or a lower alkyl derivative thereof, M.sup.2 A.sub.2 (2) wherein M 2 is Cr or Mo and M.sup.3 A.sub.4 (3) wherein M 3 is Ti, Zr or Hf Are useful as components of coordination catalysts for olefin polymerization. Lithium compounds of the formula LiA are intermediates used in preparing the above compounds. All of the above compounds are also useful as oxygen-scavenging agents.
Inventors
- 👤 Leo Ernest Manzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:54
CPC Classifications
C; C08; C08F; C08F10/00; C07; C07F; C07F1/00; C07F1/02; C07F11/00; C07F5/00; C07F7/00; C07F7/28; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/619; C08F4/61912
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
130 words
Transition metal compounds of the formulae M.sup.1 A.sub.3 ( 1) wherein M 1 = sc, Y or a rare earth metal, and ##STR8## where x = 0 or 1 R 1 , r 2 and the R 3 's are each C 1 -C 8 alkyl, and n = 0, 1, 2, 3 or 3 + x, when x = 0, the position in the benzene ring adjacent to the --NR 1 R 2 substituent, other than that occupied by the --CH 2 -- substituent, being unsubstituted, M.sup.2 A.sub.2 ( 2) wherein M 2 = cr or Mo, and M.sup.3 A.sub.4 ( 3) wherein M 3 = ti, Zr or Hf, there being a coordination bond between M 1 , M 2 or M 3 and the nitrogen of A.
Claim 2
Dependent Claim
130 words
Transition metal compounds of the formulae M.sup.1 A.sub.3 ( 1) wherein M 1 = sc, Y or a rare earth metal, and ##STR8## where x = 0 or 1 R 1 , r 2 and the R 3 's are each C 1 -C 8 alkyl, and n = 0, 1, 2, 3 or 3 + x, when x = 0, the position in the benzene ring adjacent to the --NR 1 R 2 substituent, other than that occupied by the --CH 2 -- substituent, being unsubstituted, M.sup.2 A.sub.2 ( 2) wherein M 2 = cr or Mo, and M.sup.3 A.sub.4 ( 3) wherein M 3 = ti, Zr or Hf, there being a coordination bond between M 1 , M 2 or M 3 and the nitrogen of A.
Claim 3
Dependent Claim
11 words
The transition metal compounds of claim 1 of the formula ##STR9##
Claim 4
Dependent Claim
29 words
Transition metal compounds of claim 2 in which M 1 = Sc or Y; R 1 and R 2 are the same; and n is not more than 1.
Claim 5
Dependent Claim
8 words
The transition metal compound of claim 3, tris(2-dimethylaminobenzyl)scandium.
Claim 6
Dependent Claim
8 words
The transition metal compound of claim 3, tris(2-dimethylaminomethylphenyl)scandium.
Claim 7
Dependent Claim
13 words
The transition metal compounds of claim 1 of the formula M.sup.2 A.sub.2. (2)
Claim 8
Dependent Claim
13 words
The transition metal compounds of claim 1 of the formula M.sup.3 A.sub.4. (3)
Claim 9
Dependent Claim
8 words
the transition metal compound of claim 7, tetrakis(2-dimethylaminobenzyl)titanium.
Claim 10
Dependent Claim
8 words
The transition metal compound of claim 7, tetrakis(2-dimethylaminomethylphenyl)zirconium.
Claim 11
Dependent Claim
8 words
The transition metal compound of claim 7, tetrakis(2-dimethylaminomethylphenyl)titanium.
Claim 12
Dependent Claim
8 words
The transition metal compound of claim 7, tetrakis(2-dimethylaminobenzyl)zirconium.
References Cited (Backward Citations)
US3813423A
Cited
GB1336779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |