US4126619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinkable bis-imidyl derivatives
Assignee: BASF Corp
•
Filing: 1976-12-06
•
Granted: 1978-11-21
•
Expires: 1996-12-06
Abstract
Abstract New crosslinkable bis-imidyl derivatives are described which can be produced by reaction of imidylphthalic acid derivatives, such as maleimidyl-phthalic acid anhydrides, with monomeric, oligomeric or polymeric diamines. The new crosslinkable bis-imidyl derivatives can be used for producing crosslinked polymers which are distinguished, in particular, by their stability to oxidation and to heat.
Inventors
- 👤 Roland Darms
- 👤 Vratislav Kvita
- 👤 Gerd Greber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:34
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
165 words
A crosslinkable compound of the formula ##STR25## wherein the Xs independently of one another represent hydrogen, or if the radical ##STR26## is in the 4-position of the benzene ring, also --COR 2 , the R 2 s independently of one another represent hydroxyl, phenoxy; phenoxy substituted by one or two nitro groups, by one alkyl of 1 to 2 carbon atoms, by one alkoxy of 1 to 2 carbon atoms or by two or five halogen atoms; alkoxy of 1 to 18 carbon atoms or an O - M + group, the A s independently of one another represent a radical of the formula ##STR27## ##STR28## R 3 and R 4 independently of one another represent hydrogen, chlorine, bromine or methyl, M + represents an alkali metal cation, a trialkylammonium cation having 3 to 24 carbon atoms or a quaternary ammonium cation, and Y represents alkylene of 2 to 10 carbon atoms, 1,3-phenylene, 1,4-phenylene, the 4,4'-diphenylmethane group, the 4,4'-diphenylsulfone group or the 4,4'-diphenyl ether group.
Claim 2
Dependent Claim
165 words
A crosslinkable compound of the formula ##STR25## wherein the Xs independently of one another represent hydrogen, or if the radical ##STR26## is in the 4-position of the benzene ring, also --COR 2 , the R 2 s independently of one another represent hydroxyl, phenoxy; phenoxy substituted by one or two nitro groups, by one alkyl of 1 to 2 carbon atoms, by one alkoxy of 1 to 2 carbon atoms or by two or five halogen atoms; alkoxy of 1 to 18 carbon atoms or an O - M + group, the A s independently of one another represent a radical of the formula ##STR27## ##STR28## R 3 and R 4 independently of one another represent hydrogen, chlorine, bromine or methyl, M + represents an alkali metal cation, a trialkylammonium cation having 3 to 24 carbon atoms or a quaternary ammonium cation, and Y represents alkylene of 2 to 10 carbon atoms, 1,3-phenylene, 1,4-phenylene, the 4,4'-diphenylmethane group, the 4,4'-diphenylsulfone group or the 4,4'-diphenyl ether group.
Claim 3
Dependent Claim
56 words
A crosslinkable compound according to claim 1 of formula Ia' wherein the two radicals ##STR29## independently of one another are in the 3- or 4- position of the benzene ring, X represents hydrogen or --COR 2 where R 2 is alkoxy of 1 to 4 carbon atoms, and A represents the radical of the formula ##STR30##
Claim 4
Dependent Claim
11 words
A crosslinkable compound according to claim 1 wherein A is --CH═CH--.
Claim 5
Dependent Claim
52 words
A crosslinkable compound according to claim 1 wherein A represents the radical ##STR31## X represents a --COR 2 group, where R 2 is alkoxy of 1 to 4 carbon atoms, or hydrogen, with the two radicals ##STR32## in formula Ia' each being in the 3- or 4- position of the benzene ring.
Claim 6
Dependent Claim
10 words
A crosslinkable compound according to claim 1 which is ##STR33##
Claim 7
Dependent Claim
10 words
A crosslinkable compound according to claim 1 which is ##STR34##
Claim 8
Dependent Claim
10 words
A crosslinkable compound according to claim 1 which is ##STR35##
Claim 9
Dependent Claim
10 words
A crosslinkable compound according to claim 1 which is ##STR36##
Claim 10
Dependent Claim
10 words
A crosslinkable compound according to claim 1 which is ##STR37##
Claim 11
Dependent Claim
10 words
A crosslinkable compound according to claim 1 which is ##STR38##
References Cited (Backward Citations)
US3763114A
Cited
US3862129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |