US4396649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resins and emulsions made therefrom
Assignee: Solvay Interox Ltd
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Filing: 1981-11-20
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Granted: 1983-08-02
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Expires: 2001-11-20
Abstract
Abstract Tertiary nitrogen-containing chain-extended epoxy resins, capable of forming stable aqueous emulsions, may be produced by chain-extending an epoxy resin using a tertiary nitrogen containing ether or ester polyol for example, particularly, polycaprolactone which has been polymerization initiated by a tertiary amine polyol such as N-methyl diethanolamine. The corresponding amine salt is formed by treatment with an acid for example acetic acid and the resulting cationic polymer may be dispersed in water to form a cationic emulsion capable of being coated onto a substrate by electrodeposition. The chain extended resins, by virtue by their content of free epoxy groups are also usable for cross-linking and other uses.
Inventors
- 👤 Brian E. Bailey
- 👤 Joseph W. Lister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:19
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4434; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; C08G18/28; C08G18/40; C08G18/58; C08G18/584; C08G59/00; C08G59/02; C08G59/04; C08G59/14; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C08L; C08L63/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
163 words
A composition comprising a tertiary nitrogen-containing epoxy resin comprising a polyepoxide which has been chained-extended by means of a polyol, characterised in that the polyol is a tertiary nitrogen-containing ester polyol having the general formula G--(O--A--H)x I wherein G is a tertiary nitrogen-containing organic radical with x free valencies, wherein x is at least 2 and A is a straight or branched chain monomeric entity or a straight or branched chain polymeric entity said entity containing one or more units, the same or different, selected from units having the general formula --(CO--B--CO--O--CH.sub.2 --D--CH.sub.2 --O)-- II where B and D are straight or branched chain alkylene groups containing not more than 8 carbon atoms, or in the case of D is a chemical bond, and from units having the general formula --(CO--E--CH.sub.2 --O)-- III where E is a straight or branched alkylene group having a chain length of from 4 to 9 carbon atoms and containing not more than 9 carbon atoms in total.
Claim 2
Dependent Claim
163 words
A composition comprising a tertiary nitrogen-containing epoxy resin comprising a polyepoxide which has been chained-extended by means of a polyol, characterised in that the polyol is a tertiary nitrogen-containing ester polyol having the general formula G--(O--A--H)x I wherein G is a tertiary nitrogen-containing organic radical with x free valencies, wherein x is at least 2 and A is a straight or branched chain monomeric entity or a straight or branched chain polymeric entity said entity containing one or more units, the same or different, selected from units having the general formula --(CO--B--CO--O--CH.sub.2 --D--CH.sub.2 --O)-- II where B and D are straight or branched chain alkylene groups containing not more than 8 carbon atoms, or in the case of D is a chemical bond, and from units having the general formula --(CO--E--CH.sub.2 --O)-- III where E is a straight or branched alkylene group having a chain length of from 4 to 9 carbon atoms and containing not more than 9 carbon atoms in total.
Claim 3
Dependent Claim
23 words
A composition as claimed in claim 1 wherein in the ester polyol the entity A contains polylactone units having the general formula III.
Claim 4
Dependent Claim
73 words
A composition as claimed in claim 2 wherein the polylactone units having the general formula III are derived from epsilon caprolactones having the general formula ##STR2## wherein R represents an organic substituent or a hydrogen atom and wherein R is a hydrogen atom in at least 6 occurances in the formula and wherein the total number of carbon atoms in all occurrences of R in the general formula is not more than 12.
Claim 5
Dependent Claim
18 words
A composition as claimed in claim 3 wherein in every occurrence in the general formula R is hydrogen.
Claim 6
Dependent Claim
44 words
A composition as claimed in claim 1 wherein the tertiary nitrogen containing organic radical G comprises an organic compound containing two or three active hydrogen atoms each and a tertiary nitrogen atom in which said active hydrogen atoms are replaced by the group --(O--A--H).
Claim 7
Dependent Claim
23 words
A composition as claimed in claim 5 wherein the active hydrogen atoms in the organic compound are contained in hydroxyl or amine groups.
Claim 8
Dependent Claim
18 words
A composition as claimed in claim 6 wherein the organic compound is a tri-alkanolamine or an alkyl di-alkanolamine.
Claim 9
Dependent Claim
15 words
A composition as claimed in claim 7 wherein the organic compound is an alkyl diethanolamine.
Claim 10
Dependent Claim
26 words
A composition as claimed in claim 1 wherein the number of units A in the expression--(OAH) in the formula I given above is up to 10.
Claim 11
Dependent Claim
17 words
A composition as claimed in claim 1 wherein the epoxy resin comprises a polyglycidyl ether or ester.
Claim 12
Dependent Claim
22 words
A composition as claimed in claim 10 wherein the polyglycidyl ether or ester has an epoxy equivalent of from 280 to 6750.
Claim 13
Dependent Claim
45 words
A composition as claimed in claim 1 wherein the ratio of the quantity of the tertiary nitrogen containing polyol to that of the polyepoxide is such as to provide 1 hydroxyl group of the polyol for every 1.5 to 4 epoxy groups of the polyepoxide.
Claim 14
Dependent Claim
23 words
A composition as claimed in claim 1 wherein the chain extended polyepoxide contains from 0.15 to 6.0 m.eq of neutralisable nitrogen per g.
Claim 15
Dependent Claim
20 words
A composition as claimed in claim 1 wherein the claim extended polyepoxide is in the form of an amine salt.
Claim 16
Dependent Claim
18 words
A composition as claimed in claim 14 in the form of an aqueous emulsion of the amine salt.
Claim 17
Dependent Claim
30 words
A process for the formation of a surface coating comprising a chain extended polyepoxide comprising electrodepositing said polyepoxide from an aqueous emulsion as claimed in claim 15 onto the surface.
Claim 18
Dependent Claim
39 words
A process for the formation of a surface coating comprising applying a chain extended polyepoxide as claimed in claim 1 onto a surface and curing the polyepoxide by the reaction of residual epoxy groups therein with a cross-linking agent.
Claim 19
Dependent Claim
13 words
A surface coating prepared by the process claimed in claim 16 or 17.
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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |