EP0446718A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Phenoxy bis-maleimides and process for their preparation
Assignee: Bromine Compounds Ltd
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Filing: 1991-03-01
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Granted: —
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Expires: 2011-03-01
Abstract
Abstract Compounds of the formula: <CHEM> wherein: n = 0 or 1; R1 and R2 are C1 to C3 alkyl groups, or R2 may be H when n = 0; and Y is selected from the group: <CHEM> or <CHEM> wherein: m = 1 - 6; Z = SO2, S, C = O, CH2 or C(CH3)2; and processes for their preparation are described. <IMAGE>
Inventors
- 👤 Chaim Eidelman
- 👤 Leonard Shorr
- 👤 Joshua Hermolin
- 👤 Jakob Oren
- 👤 Michel Adda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 14:44
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/452; C07C; C07C233/00; C07C233/01; C07C233/16; C07C233/24; C07C233/27
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
68 words
A compound of the formula wherein: n = 0 or 1; R₁ and R₂ are C₁ to C₃ alkyl groups, or R₂ may be H when n = 0; and Y is selected from the group: or wherein: m = 1 - 6; Z = SO₂, S, C = O, CH₂ or C(CH₃)₂; with the proviso that R₁ and R₂ cannot both be isopropyl when n = 0.
Claim 2
Dependent Claim
1 words
4,4'-Diamino-3-methyldiphenylether-bis-maleimide.
Claim 3
Dependent Claim
1 words
2,2'-Dimethyl-4,4'-diaminotriphenylether-bis-maleimide.
Claim 4
Dependent Claim
1 words
3,3'-Dimethyl-4,4'-diaminotriphenylether-bis-maleimide.
Claim 5
Dependent Claim
1 words
2-Isopropyl-4,4'-diaminodiphenylether-bis-maleimide.
Claim 6
Dependent Claim
1 words
2,2'-Dimethyl-4,4'-diaminotetraphenylether-bis-maleimide.
Claim 7
Dependent Claim
3 words
Bis [4-amino-2-methylphenoxy] biphenyl-bis-maleimide.
Claim 8
Dependent Claim
3 words
Bis [4-amino-2-methylphenoxy] diphenylsulfone-bis-maleimide.
Claim 9
Dependent Claim
3 words
Bis [4-amino-2-methylphenoxy] benzophenone-bis-maleimide.
Claim 10
Dependent Claim
3 words
Bis [4-amino-2-methylphenoxy] 2,2-diphenylpropane-bis-maleimide.
Claim 11
Dependent Claim
3 words
Bis [4-amino-2-methylphenoxy] diphenylmethane-bis-maleimide.
Claim 12
Dependent Claim
27 words
A process for the preparation of a compound of formula I, as claimed in claim 1, comprising dehydrocyclizing a compound of the formula in an organic solvent.
Claim 13
Dependent Claim
13 words
A process according to claim 12, wherein dehydrocyclization is effected by chemical dehydrocyclization.
Claim 14
Dependent Claim
13 words
A process according to claim 12, wherein dehydrocyclization is effected by thermal dehydrocyclization.
Claim 15
Dependent Claim
14 words
A process according to claim 14, wherein dehydrocyclization is performed in a batch mode.
Claim 16
Dependent Claim
13 words
A process according to claim 14, wherein dehydrocyclization is performed in continuous mode.
Claim 17
Dependent Claim
10 words
A compound of formula III, as claimed in claim 12.
Claim 18
Dependent Claim
6 words
The compound 4,4'-diamino-3-methyl-diphenylether-bis-maleamic acid of formula:
References Cited (Backward Citations)
No citation records indexed.
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