US4414250A
Expired / Lapsed
US
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Amine containing resin with oxalate esters for casting
Assignee: Celanese Corp
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Filing: 1981-10-02
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Granted: 1983-11-08
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Expires: 2001-10-02
Abstract
Abstract Thermosetting resin coatings are provided which cure rapidly and exothermically at ambient temperatures. Accelerated crosslinking is accomplished by the reaction of oxalic acid esters with amine-containing polymeric compositions.
Inventors
- 👤 John R. Costanza
- 👤 Louis E. Trapasso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:47
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/681; C08G59/685; C08G59/40; C08G59/42; C08G59/4207; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
49 words
A coating composition curable at ambient temperatures comprising a mixture of a thermoplastic resin containing a plurality of primary or secondary amino groups, and an oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 2
Dependent Claim
49 words
A coating composition curable at ambient temperatures comprising a mixture of a thermoplastic resin containing a plurality of primary or secondary amino groups, and an oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 3
Dependent Claim
49 words
A coating composition curable at ambient temperatures comprising a mixture of a thermoplastic resin containing a plurality of primary or secondary amino groups, and an oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 4
Dependent Claim
49 words
A coating composition curable at ambient temperatures comprising a mixture of a thermoplastic resin containing a plurality of primary or secondary amino groups, and an oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 5
Dependent Claim
17 words
A crosslinked resin composition which is a resultant product of a process in accordance with claim 2.
Claim 6
Independent Claim
55 words
A method for protecting a surface with a crosslinked resinous coating which comprises admixing an oxalate ester with polyethyleneimine polyamine and casting the admixture on said surface at ambient temperatures; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 7
Independent Claim
55 words
A method for protecting a surface with a crosslinked resinous coating which comprises admixing an oxalate ester with polyethyleneimine polyamine and casting the admixture on said surface at ambient temperatures; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 8
Dependent Claim
17 words
A method in accordance with claim 4 wherein the polyamine is instead an amine-modified thermoplastic epoxy resin.
Claim 9
Dependent Claim
16 words
A method in accordance with claim 4 wherein the polyamine is instead an aromatic amine-aldehyde condensate.
Claim 10
Dependent Claim
15 words
A method in accordance with claim 4 wherein the polyamine is instead an amine-modified polyanhydride.
Claim 11
Dependent Claim
15 words
A method in accordance with claim 4 wherein the polyamine is instead an aminoplast resin.
Claim 12
Dependent Claim
39 words
A low temperature curable composition comprising a mixture of an oxalate ester and polyethyleneimine; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 13
Dependent Claim
39 words
A low temperature curable composition comprising a mixture of an oxalate ester and polyethyleneimine; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 14
Dependent Claim
43 words
A low temperature curable composition comprising a mixture of an oxalate ester and an amine-modified thermoplastic epoxy resin; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 15
Dependent Claim
43 words
A low temperature curable composition comprising a mixture of an oxalate ester and an amine-modified thermoplastic epoxy resin; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 16
Dependent Claim
42 words
A low temperature curable composition comprising a mixture of an oxalate ester and an aromatic amine-aldehyde condensate; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 17
Dependent Claim
42 words
A low temperature curable composition comprising a mixture of an oxalate ester and an aromatic amine-aldehyde condensate; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 18
Dependent Claim
41 words
A low temperature curable composition comprising a mixture of an oxalate ester and an amine-modified polyanhydride; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 19
Dependent Claim
41 words
A low temperature curable composition comprising a mixture of an oxalate ester and an amine-modified polyanhydride; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 20
Dependent Claim
41 words
A low temperature curable composition comprising a mixture of an oxalate ester and an aminoplast resin; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four carbon atoms.
Claim 21
Dependent Claim
41 words
A low temperature curable composition comprising a mixture of an oxalate ester and an aminoplast resin; said oxalate ester corresponding to the formula: RO.sub.2 C--CO.sub.2 R wherein R is a lower alkyl group containing between one and about four 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) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |