US 4,396,649 AGranted

Epoxy resins and emulsions made therefrom

AssigneeInterox Chemicals Limited

InventorsBrian E. Bailey, Joseph W. Lister

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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.

Claims18

Dependent claims

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.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/323,376Filed 20 Nov 1981
Priority: GB 804004715 Dec 1980
Granted: 2 Aug 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

C09D 5/4434
Polyepoxides: characterised by the nature of the epoxy binder
C08G 18/0814
Containing cationic or cationogenic groups: containing ammonium groups or groups forming them
C08G 18/584
Epoxy resins: having nitrogen
C08G 59/04
Polycondensates containing more than one epoxy group per molecule: of polyhydroxy compounds with epihalohydrins or precursors thereof

Family

No related US applications are recorded in the indexed filing history.

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