US5151470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminocrotonates as curing agents for epoxy resins
Assignee: Bayer Corp
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Filing: 1992-01-10
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Granted: 1992-09-29
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Expires: 2012-01-10
Abstract
Abstract Specified aminocrotonates are described for use as hardeners for expoxide resins.
Inventors
- 👤 Joseph Sanders
- 👤 Robson Mafoti
- 👤 Peter H. Markusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:55
CPC Classifications
C; C08; C08L; C08L63/00; C07; C07C; C07C229/00; C07C229/02; C07C229/30; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/52; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C08G65/333; C08G65/33303
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
101 words
A heat curable composition comprising: a) an epoxide compound with, on average, more than one epoxide group in the molecule, and b) a β-aminocrotonate of the general formula: ##STR4## where R represents a hydrocarbon radical, A represents the polyfunctional radical left by removal of the hydroxyl groups from a polyol of molecular weight of from about 800 to about 6000 and functionality n, and n is an integer of from 2 to 6, with the ratio of component a) to component b) being such that at least one half moles of amine groups are present for each mole of epoxide group.
Claim 2
Dependent Claim
101 words
A heat curable composition comprising: a) an epoxide compound with, on average, more than one epoxide group in the molecule, and b) a β-aminocrotonate of the general formula: ##STR4## where R represents a hydrocarbon radical, A represents the polyfunctional radical left by removal of the hydroxyl groups from a polyol of molecular weight of from about 800 to about 6000 and functionality n, and n is an integer of from 2 to 6, with the ratio of component a) to component b) being such that at least one half moles of amine groups are present for each mole of epoxide group.
Claim 3
Dependent Claim
31 words
The composition of claim 1, wherein A represents the polyfunctional radical left by removal of the hydroxyl groups from a polyol of molecular weights of from about 800 to about 3,500.
Claim 4
Dependent Claim
15 words
The composition of claim 2, wherein n is an integer of from 2 to 4.
Claim 5
Dependent Claim
18 words
The composition of claim 3, wherein R is an aliphatic group having from 5 to 12 carbon atoms.
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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) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |