US3755322A
Expired / Lapsed
US
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Diamino-s-triazines
Assignee: Novartis Corp
•
Filing: 1970-07-15
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Granted: 1973-08-28
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Expires: 1990-07-15
Abstract
Abstract The disclosure covers diamino-s-triazines which are useful in polymer synthesis, such as polyimides. Also covered are dinitros-triazines which can be used as intermediates for the diamino compounds. The diamines are prepared by a condensation of 2substituted-4,6-dichlorotriazines with diamines or with nitroamines. The product from the latter reaction can be reduced subsequently to diamines.
Inventors
- 👤 R Winter
- 👤 R Seltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:08
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/40; C07D251/48; C07D251/52; C07D251/54; C07D251/70; C07D319/00; C07D319/10; C07D319/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
21 words
A diamino of claim 1, wherein R'' is a. ortho, meta, or para phenylene, biphenylene, naphthylene or anthracylene, b. the group
Claim 2
Dependent Claim
9 words
The diamine of claim 1 where R'' is phenylene.
Claim 3
Dependent Claim
10 words
The diamine of claim 1 where R2 is phenyl group.
Claim 4
Dependent Claim
10 words
The diamine of claim 1 where R2 is anilino group.
Claim 5
Dependent Claim
10 words
The diamine of claim 1 where R2 is diphenylamino group.
Claim 6
Dependent Claim
15 words
The diamine of claim 1 where R'' is p,p'' diphenylene ether and R2 is phenyl.
Claim 7
Dependent Claim
8 words
The diamine of claim 1, which is 2-diphenylamino-4,6-bis(3''-aminoanilino)-s-triazine
Claim 8
Dependent Claim
8 words
The diamine of claim 1, which is 2-diphenylamino-4,6-bis(4''-aminoanilino)-s-triazine.
Claim 9
Dependent Claim
8 words
The diamine of claim 1, which is 2-diphenylamino-4,6-bis(2''-aminoanilino)-s-triazine.
Claim 10
Dependent Claim
8 words
The diamine of claim 1, which is 2,4-bis(3''-aminoanilino)-s-triazine.
Claim 11
Dependent Claim
8 words
The diamine of claim 1, which is 2-dimethylamino-4,6-bis(3''-aminoanilino)-s-triazine.
Claim 12
Dependent Claim
8 words
The diamine of claim 1, which is 2-amino-4,6-bis(3''-aminoanilino)-s-triazine.
Claim 13
Dependent Claim
8 words
The diamine of claim 1, which is 2-phenyl-4,6-bis(3''-aminoanilino)-s-triazine.
Claim 14
Dependent Claim
8 words
The diamine of claim 1, which is 2-diphenylamino-4,6-bis(4''-(4''''-aminophenoxy)anilino)-s-triazine.
Claim 15
Dependent Claim
8 words
The diamine of claim 1, which is 2-diphenylamino-4,6-bis(4''-(4''''-aminobenzyl)anilino)-s-triazine.
Claim 16
Dependent Claim
9 words
A diamine-dioxane complex wherein said diamine has the formula
Claim 17
Dependent Claim
15 words
The complex of claim 16 wherein the ratio of the diamine to dioxane is 1:1.
Claim 18
Dependent Claim
15 words
The complex of claim 16 wherein the ratio of the diamine to dioxane is 1:0.75.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |