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US4826995A
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Bismaleimide derivatives of higher molecular weight polyoxyalkyleneamines
Assignee: Huntsman Corp
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Filing: 1987-11-25
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Granted: 1989-05-02
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Expires: 2007-11-25
Abstract
Abstract Novel bismaleimide derivatives of higher molecular weight polyoxyalkyleneamines of the formula: ##STR1## are prepared by reacting higher molecular weight polyoxyalkyleneamines with bismaleimides prepared from low molecular weight oxyethylenediamines. In another embodiment aromatic bismaleimides derivatives are prepared.
Inventors
- 👤 David C. Alexander
- 👤 George P. Speranza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:25
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/452; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08G65/33331; C08G65/33337; C08G65/33396
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
Novel bismaleimide derivatives of higher molecular weight polyoxyalkyleneamines of the formula: ##STR13## where R is CH 2 CH 2 --(OCH 2 CH 2 --) n and wherein R 1 and R 2 are independently lower alkyl or hydrogen and x, y and z depend on the amine used, wherein when R 1 =R 2 =methyl or ethyl then x=1 to 70 and y=z=O and where R 1 =methyl or ethyl and R 2 =H, then x+z≅2.5 and y=5 to 80; and n is 1, 2 or 3 and m is 0 to 1.
Claim 2
Dependent Claim
93 words
Novel bismaleimide derivatives of higher molecular weight polyoxyalkyleneamines of the formula: ##STR13## where R is CH 2 CH 2 --(OCH 2 CH 2 --) n and wherein R 1 and R 2 are independently lower alkyl or hydrogen and x, y and z depend on the amine used, wherein when R 1 =R 2 =methyl or ethyl then x=1 to 70 and y=z=O and where R 1 =methyl or ethyl and R 2 =H, then x+z≅2.5 and y=5 to 80; and n is 1, 2 or 3 and m is 0 to 1.
Claim 3
Dependent Claim
24 words
The compound in claim 1 wherein R represents an amine terminated triethylene glycol of the formula H.sub.2 N--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --NH.sub.2.
Claim 4
Dependent Claim
26 words
The compound in claim 1 wherein R represents an amine terminated tetraethylene glycol of the formula H.sub.2 N--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --NH.sub.2.
Claim 5
Dependent Claim
6 words
A bismaleimide having the formula: ##STR14##
Claim 6
Dependent Claim
6 words
A bismaleimide having the formula: ##STR14##
Claim 7
Dependent Claim
28 words
The compound of claim 1 wherein the group represented by R is selected from the group consisting of diethylene glycol diamine, triethylene glycol diamine and tetraethylene glycol diamine.
Claim 8
Dependent Claim
52 words
The compound of claim 1 wherein R is selected from the group consisting of a bisaminoethylether, an amine terminated triethylene glycol of the formula H.sub.2 N CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --NH.sub.2 and an amine terminated tetraethylene glycol of the formula H.sub.2 N--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --NH.sub.2.
Claim 9
Dependent Claim
35 words
A novel aromatic bismaleimide derivative of the formula: ##STR15## wherein R 1 and R 2 are independently alkyl or hydrogen, x, y, and z depend on the amine used, and m is 0 to 1.
Claim 10
Dependent Claim
35 words
A novel aromatic bismaleimide derivative of the formula: ##STR15## wherein R 1 and R 2 are independently alkyl or hydrogen, x, y, and z depend on the amine used, and m is 0 to 1.
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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) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |