US4160859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable mixtures based on maleimides and acetone-anil
Assignee: BASF Corp
•
Filing: 1977-04-01
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Granted: 1979-07-10
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Expires: 1997-04-01
Abstract
Abstract Mixtures which can be cured to give moulded materials having technically very valuable mechanical and dielectric properties, characterized in that they contain (a) mono-, bis- or tris-maleimides and/or maleimide prepolymers of the maleimides with an aliphatic, cycloaliphatic or aromatic diprimary diamine, (b) acetone-anil, and optionally (c) a copolymerizable compound containing at least one olefinic C═C double bond in the molecule.
Inventors
- 👤 Alfred Renner
- 👤 Abdul-Cader Zahir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:35
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; C08L79/085; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
52 words
A curable composition which consists essentially of (a) a maleimide of the general formula I ##STR6## wherein R denotes an n-valent aliphatic or aromatic radical, and n denotes the number 2; and (b) 2,2,4-trimethyl-1,2-dihydroquinoline, in such ratio that for 1 imido group equivalent there is present 0.05 to 1 mole of 2,2,4-trimethyl-1,2-dihydroquinoline.
Claim 2
Dependent Claim
52 words
A curable composition which consists essentially of (a) a maleimide of the general formula I ##STR6## wherein R denotes an n-valent aliphatic or aromatic radical, and n denotes the number 2; and (b) 2,2,4-trimethyl-1,2-dihydroquinoline, in such ratio that for 1 imido group equivalent there is present 0.05 to 1 mole of 2,2,4-trimethyl-1,2-dihydroquinoline.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 wherein maleimide of formula I is ##STR7##
Claim 4
Dependent Claim
19 words
A composition according to claim 1, wherein R represents a bivalent aromatic radical, and n represents the number 2.
Claim 5
Dependent Claim
37 words
A composition according to claim 1, wherein R represents an unsubstituted phenylene radical or a phenylene radical substituted by methyl, or a radical of the formula ##STR8## wherein A represents methylene, an ether oxygen atom or sulphonyl.
Claim 6
Dependent Claim
32 words
A composition according to claim 1, wherein the components (a) and (b) are in such a ratio that to 1 imido group equivalent there is present 0.1 to 0.5 mole of 2,2,4-trimethyl-1,2-dihydroquinoline.
References Cited (Backward Citations)
US4066621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-09 | 1983-01-08 | 1983-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-09 | 1987-01-08 | 1987-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-09 | 1991-01-08 | 1991-07-10 | $7700.00 | Window Closed / Lapsed |