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US4085106A Expired / Lapsed US ⏱️ 0.0 years remaining

Bicyclic and tricyclic trisaminomethanes

Assignee: EIDP Inc
•
Filing: 1976-01-07
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Granted: 1978-04-18
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Expires: 1996-01-07
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Abstract

Abstract Polycyclic trisaminomethanes of the formula ##STR1## in which R 1 and R 2 , alike or different, are alkylene; R 3 and R 4 , alike or different, are alkyl, cycloalkyl, or aralkyl; or R 3 and R 4 are joined together to form an alkylene group which may be interrupted by (1) ##STR2## WHERE Q is hydrogen or alkyl, or (2) ONE OR TWO --O-- linkages; and There are at least 2 carbons between each two hetero atoms in the outer ring system, are useful as initiators for the polymerization of pivalolactone. These polycyclic trisaminomethanes are prepared by reacting a polyamine of the formula R.sup.3 NHR.sup.1 NHR.sup.2 NHR.sup.4 with a dialkoxy(dialkylamino)methane of the formula (RO).sub.2 CHNR'.sub.2 in which R and R', alike or different, are alkyl.

Inventors

  • 👤 Thomas Joseph Atkins

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 15:24
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 48 words
Tricyclic trisaminomethanes of the formula ##STR26## in which R 1 and R 2 , alike or different, are alkylene of 2 to 6 carbons with at least 2 carbons in the backbone, and R 8 is alkylene of 3 to 6 carbons with 3 carbons in the backbone.
Claim 2
Dependent Claim 48 words
Tricyclic trisaminomethanes of the formula ##STR26## in which R 1 and R 2 , alike or different, are alkylene of 2 to 6 carbons with at least 2 carbons in the backbone, and R 8 is alkylene of 3 to 6 carbons with 3 carbons in the backbone.
Claim 3
Dependent Claim 10 words
The tricyclic trisaminomethane of claim 1 of the formula ##STR27##
Claim 4
Dependent Claim 10 words
The tricyclic trisaminomethane of claim 1 of the formula ##STR28##
Claim 5
Dependent Claim 10 words
The tricyclic trisaminomethane of claim 1 of the formula ##STR29##

References Cited (Backward Citations)

US2541825A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-04-17 1981-10-17 1982-04-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-04-17 1985-10-17 1986-04-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-04-17 1989-10-17 1990-04-18 $7700.00 Window Closed / Lapsed

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