EP0202765A2
Expired / Lapsed
EP
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Stable aqueous epoxy resin dispersions
Assignee: Resolution Research Nederland BV
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Filing: 1986-04-16
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Granted: —
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Expires: 2006-04-16
Abstract
Abstract A stable aqueous epoxy resin dispersion, useful as a coating composition when cured, is made by dispersing in water the reaction product of a diglycidyl ether of a dihydric phenol, a dihydric phenol, a diglycidyl ether of a polyoxyalkylene glycol and an alkyl phenol-formaldehyde novolac resin.
Inventors
- 👤 Jr. Paul R. Williams
- 👤 Russell V. Burt
- 👤 Ronald Golden
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 22:58
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/621; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G59/20; C08G59/22; C08G59/226; C08L; C08L63/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
91 words
An epoxy resin dispersion composition comprising: (1) an aqueous medium; and (2) from 50 to 70 weight percent of self-emulsifying epoxy resin having a molecular weight of 1000 to 20,000 which resin is the addition reaction product of (a) 40-90 parts by weight of a diglycidyl ether of a dihydric phenol, (b) 5-35 parts by weight of a dihydric phenol, (c) 2-15 parts by weight of a diglycidyl ether of a polyoxyalkylene glycol, and (d) 2-15 parts by weight novolac resin wherein the alkyl group contains 4 to 12 carbon atoms.
Claim 2
Dependent Claim
91 words
An epoxy resin dispersion composition comprising: (1) an aqueous medium; and (2) from 50 to 70 weight percent of self-emulsifying epoxy resin having a molecular weight of 1000 to 20,000 which resin is the addition reaction product of (a) 40-90 parts by weight of a diglycidyl ether of a dihydric phenol, (b) 5-35 parts by weight of a dihydric phenol, (c) 2-15 parts by weight of a diglycidyl ether of a polyoxyalkylene glycol, and (d) 2-15 parts by weight novolac resin wherein the alkyl group contains 4 to 12 carbon atoms.
Claim 3
Dependent Claim
25 words
An epoxy resin dispersion in accordance with claim 1 wherein the diglycidyl ether of the dihydric phenol (a) is the diglycidyl ether of Bisphenol A.
Claim 4
Dependent Claim
19 words
An epoxy resin dispersion in accordance with claim 1 or 2 wherein the dihydric phenol )b) is Bisphenol A.
Claim 5
Dependent Claim
28 words
An epoxy resin dispersion in accordance with any of claims 1-3 wherein the diglycidyl ether of a polyoxyalkylene glycol (c) is the diglycidyl ether of a polyoxyethylene-propylene glycol.
Claim 6
Dependent Claim
21 words
An epoxy resin dispersion in accordance with any of claims 2-4 wherein the novolac resin (d) is a nonyl-phenol-formaldehyde novolac resin.
Claim 7
Dependent Claim
33 words
An epoxy resin dispersion in accordance with any of claims 1-5 which contains 1 to 25 weight percent, based on resin solids weight, of water-immiscible C 8 -C 20 aliphatic monoepoxide reactive diluent.
Claim 8
Dependent Claim
26 words
An epoxy resin dispersion in accordance with claim 6 wherein the monoepoxide diluent is a glycidyl ether of a monohydric C 8 -C 17 aliphatic alcohol.
Claim 9
Dependent Claim
36 words
An epoxy resin dispersion in accordance with any of claims 1-5 which contains 5 to 20 weight percent, based on resin solids weight, or water-miscible solvent selected from 2 to 8 carbon glycols or glycol ethers.
Claim 10
Dependent Claim
17 words
An epoxy resin dispersion in accordance with claim 8 wherein the solvent is ethylene glycol monopropyl ether.
Claim 11
Dependent Claim
38 words
An aqueous coating composition comprising an epoxy resin dispersion in accordance with any of claims 1-9 and a polyamine curing agent such that the ratio of active amine hydrogens to epoxy groups is from 0.51: 1 to 2:1.
References Cited (Backward Citations)
No citation records indexed.
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