US4425451A — Epoxy-phosphate aqueous dispersions

Claim 1

Independent Claim 68 words

A water dispersible epoxy-phosphate ester polymer, oxirane-function-free, salt reaction product of (1) a monoester reaction product containing residual epoxy functionality, of (a) a resinous polyepoxide having at least about 1.4 oxirane groups per molecule and (b) less than 0.9 mol of orthophosphoric acid for each oxirane equivalent in the polyepoxide, with (2) at least 1 mol of a volatile amine per equivalent of oxirane functionality in said monoester.

Claim 2

Dependent Claim 68 words

A water dispersible epoxy-phosphate ester polymer, oxirane-function-free, salt reaction product of (1) a monoester reaction product containing residual epoxy functionality, of (a) a resinous polyepoxide having at least about 1.4 oxirane groups per molecule and (b) less than 0.9 mol of orthophosphoric acid for each oxirane equivalent in the polyepoxide, with (2) at least 1 mol of a volatile amine per equivalent of oxirane functionality in said monoester.

Claim 3

Dependent Claim 47 words

An epoxy-phosphate ester polymer salt as recited in claim 1 in which from 0.1 to 0.7 mol of orthophosphoric acid is used for each oxirane equivalent in said polyepoxide, and at least 2 mols of amine are used per mol of available oxirane functionality in said monoester.

Claim 4

Dependent Claim 33 words

An epoxy-phosphate ester polymer salt as recited in claim 2 in which said polyepoxide is a diglycidyl ether of a bisphenol having an average molecular weight in the range of 350 to 8000.

Claim 5

Dependent Claim 36 words

An epoxy-phosphate ester polymer salt as recited in any one of claims 1-3 in which said salt is present in solution in water miscible organic solvent medium comprising at least about 10% of an ether alcohol.

Claim 6

Dependent Claim 22 words

An epoxy-phosphate ester polymer salt as recited in claim 4 in which more than 75% of said solvent medium is 2-butoxy ethanol.

Claim 7

Dependent Claim 13 words

A stable aqueous dispersion of the polymer salt solution recited in claim 4.

Claim 8

Dependent Claim 28 words

A stable aqueous dispersion as recited in claim 6 in which said organic solvent is present with respect to water in a weight ratio of 5:95 to 50:50.

Claim 9

Dependent Claim 18 words

A stable aqueous dispersion as recited in claim 7 in which said ratio is from 20:80 to 35:65.

Claim 10

Dependent Claim 29 words

A stable aqueous dispersion as recited in claim 7 in which 5% to 50% of aminoplast or phenoplast resin is included in said dispersion based on total resin solids.

Claim 11

Dependent Claim 40 words

A stable aqueous dispersion as recited in claim 9 in which from 5% to 40% of a water dispersible polyhydric alcohol having a molecular weight of at least about 300 is included in said dispersion based on total resin solids.

Claim 12

Dependent Claim 43 words

A stable aqueous dispersion as recited in claim 9 in which from 0.2-0.5 mol of orthophosphoric acid is used for each oxirane equivalent in said polyepoxide and from 30% to 80% of the initial oxirane content is retained in said monoester reaction product.

Claim 13

Dependent Claim 172 words

A stable aqueous dispersion comprising an epoxy-phosphate ester polymer salt provided by reacting a diglycidyl ether of a bisphenol having an average molecular weight in the range of 2000 to 5000 and a 1,2-epoxy equivalency of from 1.5 to 2.0 with from 0.2 to 0.5 mol of orthophosphoric acid for each oxirane equivalent in the polyepoxide to thereby form a monoester reaction product containing from 30% to 80% of its initial oxirane content as residual epoxy functionality, and then reacting the monoester reaction product with at least 2 mols of a volatile amine per equivalent of oxirane functionality in said monoester to provide a water dispersible product lacking oxirane functionality, and then dispersing said water dispersible product in water together with from 5% to 50%, based on total resin solids, of aminoplast or phenoplast resin, said dispersion being effected with the aid of water miscible organic solvent comprising at least about 10% of an ether alcohol to provide organic solvent in a weight ratio with respect to water of 5:95 to 50:50.

Claim 14

Dependent Claim 172 words

A stable aqueous dispersion comprising an epoxy-phosphate ester polymer salt provided by reacting a diglycidyl ether of a bisphenol having an average molecular weight in the range of 2000 to 5000 and a 1,2-epoxy equivalency of from 1.5 to 2.0 with from 0.2 to 0.5 mol of orthophosphoric acid for each oxirane equivalent in the polyepoxide to thereby form a monoester reaction product containing from 30% to 80% of its initial oxirane content as residual epoxy functionality, and then reacting the monoester reaction product with at least 2 mols of a volatile amine per equivalent of oxirane functionality in said monoester to provide a water dispersible product lacking oxirane functionality, and then dispersing said water dispersible product in water together with from 5% to 50%, based on total resin solids, of aminoplast or phenoplast resin, said dispersion being effected with the aid of water miscible organic solvent comprising at least about 10% of an ether alcohol to provide organic solvent in a weight ratio with respect to water of 5:95 to 50:50.

Claim 15

Dependent Claim 27 words

A stable aqueous dispersion as recited in claim 12 in which said amine is dimethyl ethanol amine and more than 75% of the solvent is 2-butoxy ethanol.

Claim 16

Independent Claim 103 words

A method of producing a water dispersible epoxy-phosphate ester polymer salt having improved stability in aqueous dispersion in admixture with aminoplast or phenoplast resin comprising reacting a resinous polyepoxide having at least about 1.4 oxirane groups per molecule with less than 0.9 mol of orthophosphoric acid for each oxirane equivalent in the polyepoxide to thereby form a monoester reaction product containing at least 10% of its initial oxirane functionality, and then reacting the monoester reaction product so-provided with at least 1 mol of a volatile amine per equivalent of oxirane functionality in said monoester to provide a water dispersible product lacking oxirane functionality.

Claim 17

Independent Claim 103 words

A method of producing a water dispersible epoxy-phosphate ester polymer salt having improved stability in aqueous dispersion in admixture with aminoplast or phenoplast resin comprising reacting a resinous polyepoxide having at least about 1.4 oxirane groups per molecule with less than 0.9 mol of orthophosphoric acid for each oxirane equivalent in the polyepoxide to thereby form a monoester reaction product containing at least 10% of its initial oxirane functionality, and then reacting the monoester reaction product so-provided with at least 1 mol of a volatile amine per equivalent of oxirane functionality in said monoester to provide a water dispersible product lacking oxirane functionality.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1987-01-09	1987-07-11	1988-01-10	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1991-01-09	1991-07-11	1992-01-10	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1995-01-09	1995-07-11	1996-01-10	$7700.00	Window Closed / Lapsed

Epoxy-phosphate aqueous dispersions

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