Patent US4066048A successfully refreshed from Google Patents.
Patent US5206200A successfully refreshed from Google Patents.
US5206200A
Expired / Lapsed
US
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Tin catalysts for hydrolysis of latent amine curing agents
Assignee: University of Southern Mississippi Research Foundation
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Filing: 1991-04-22
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Granted: 1993-04-27
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Expires: 2011-04-22
Abstract
Abstract A tin catalyst constituting an organotin compound modified with an amine is used to catalyze the hydrolysis of latent amine curing agents in amine-curable polymeric compositions. The tin catalyst is formed from the reaction product of a stannous alkanoate and an amine, optionally in the form of an adduct with water. A preferred catalyst is the reaction product of stannous octoate and ethylenediamine.
Inventors
- 👤 Richard W. Bush
- 👤 Euegene E. Carney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:52
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/70; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/16; C08G18/22; C08G18/24; C08G18/244; C08G59/40; C08G59/4007; C08G59/4014; C08G59/681; C08G59/685
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
44 words
A composition comprising a latent amine curing agent and a catalyst for the moisture-induced hydrolysis of the agent, said catalyst comprising an amine-modified organotin compound formed from the reaction of a stannous alkanoate having from 2 to 20 carbon atoms and an amine-containing compound.
Claim 2
Dependent Claim
44 words
A composition comprising a latent amine curing agent and a catalyst for the moisture-induced hydrolysis of the agent, said catalyst comprising an amine-modified organotin compound formed from the reaction of a stannous alkanoate having from 2 to 20 carbon atoms and an amine-containing compound.
Claim 3
Dependent Claim
30 words
A composition according to claim 1, wherein the ratio of moles of stannous alkanoate to equivalents of amino groups in the amine-containing compound is from about 1:8 to about 8:1.
Claim 4
Dependent Claim
13 words
A composition according to claim 1, wherein the stannous alkanoate is stannous octoate.
Claim 5
Dependent Claim
61 words
A composition according to claim 1, wherein the amine-containing compound is a mono- or polyfunctional amine selected from the group consisting of ethylenediamine, triethylenetetraamine, diethylenetriamene, epoxy adducts of triethylenetetraamine, epoxy adducts of ethylenediamine, epoxy adducts of diethylenetriamine, 1,3-diaminopropane, 1,4-diaminobutane, hexanediamine, 4,9-dioxadodecane-1,12-diamine, 4,4'-diaminodicyclohexylmethane, 9-aminomethylstearylamine, polybutandiene diamine, m-phenylenediamine, tris(aminoethyl)amine, 2-methylpentamethylenediamine, bisaminopropylpiperazine, diethylenetriamine, 3-(diethylamino)propylamine, piperazine, butylamine, dimethylaminoethanol, dodecylamine, triethylamine, amineterminated polybutadiene, and mixtures thereof.
Claim 6
Dependent Claim
11 words
A composition according to claim 4, wherein the amine is ethylenediamine.
Claim 7
Dependent Claim
15 words
A composition according to claim 1, wherein the latent amine curing agent is a ketimine.
Claim 8
Dependent Claim
15 words
A composition according to claim 1, wherein the latent amine curing agent is an aldimine.
Claim 9
Dependent Claim
15 words
A composition according to claim 1, wherein the latent amine curing agent is an enamine.
Claim 10
Dependent Claim
15 words
A composition according to claim 1, wherein the latent amine curing agent is an oxazolidine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |