Propellant-active carrier system for water-based paints

Claim 2

An aerosol water-based paint composition suitable for spray application to a substrate surface and air drying to a continuous durable film thereon, comprising: (a) about 6 to about 25 wt. % of at least one film-forming polymer which is a drying oil-modified ester polymer which is rendered water soluble by neutralization with a volatile base and which is capable of air drying to a water-resistant coating film upon volatilization of said volatile base after spraying the polymer onto a substrate surface, (b) about 20 to about 60 wt. % of dimethyl ether, (c) about 20 to about 40 wt. % of water, (d) about 0.1 to about 30 wt. % of at least one water-soluble polar organic solvent, (e) 0 to about 3 wt. % of at least one surfactant, (f) 0 to about 15 wt. % of at least one pigment, (g) 0 to about 1 wt. % of at least one pH stabilizer, (h) 0 to about 2 wt. % of at least one antifoam agent, (i) 0 to about 2 wt. % of at least one plasticizer, and (j) 0 to about 0.5 wt. % of at least one drier for said film-forming polymer, said dimethyl ether, water, and at least one polar organic solvent being present in proportions to provide a single liquid phase propellant-active carrier solution having a pH of about 7.2 to about 10 and in which said film-forming polymer is dissolved and the remainder of the components of the composition are dissolved or suspended.

Claim 3

The composition of claim 1 wherein said polar organic solvent is at least one aliphatic monohydric alcohol of the formula R-OH, in which R is an unsubstituted straight or branched chain alkyl group containing from 1 to 6 carbon atoms.

Claim 4

The composition of claim 1 wherein said polar organic solvent is selected from the group consisting of lower monoalkyl esters of ethylene or propylene glycol, diacetone alcohol, ketones and ester alcohols.

Claim 5

The composition of claim 1 wherein said polar organic solvent is a mixture of at least one aliphatic monohydric alcohol of the formula R-OH in which R is an unsubstituted straight or branched chain alkyl group containing from 1 to 6 carbon atoms and a different water-soluble polar organic solvent.

Claim 6

An aerosol water-based paint composition suitable for spray application to a substrate surface and air drying to a continuous film thereon, comprising: (a) about 6 to about 25 wt. % of at least one film-forming polymer which is a drying oil-modified ester polymer which is rendered water soluble by neutralization with ammonia or an amine and which is capable of air drying to a water-resistant coating film upon volatilization of said ammonia or amine after spraying the polymer onto a substrate surface, (b) about 20 to about 60 wt. % of dimethyl ether, (c) about 20 to about 40 wt. % of water, (d) about 1 to about 20 wt. % of at least one aliphatic monohydric alcohol of the formula R-OH wherein R is an unsubstituted straight or branched chain alkyl group containing from 1 to 6 carbon atoms, (e) about 1 to about 10 wt. % of at least one water soluble polar organic coalescing solvent, (f) 0 to about 3 wt. % of at least one surfactant, (g) 0 to about 15 wt. % of at least one pigment, (h) 0 to about 1 wt. % of at least one pH stabilizer, (i) 0 to about 2 wt. % of at least one antifoam agent, (j) 0 to about 2 wt. % of at least one plasticizer, and, (k) 0 to about 0.5 wt. % of at least one drier for said film-forming polymer, said dimethyl ether, water, at least one monohydric alcohol and at least one polar organic coalescing solvent being present in proportions to provide a single liquid phase propellant-active carrier solution having a pH of about 7.2 to about 10 and in which said film-forming polymer is dissolved and the remainder of the components of the composition are dissolved or suspended.

Claim 7

An aerosol water-based paint composition suitable for spray application to a substrate surface and air drying to a continuous film thereon, comprising: (a) about 6 to about 25 wt. % of at least one film-forming polymer which is a drying oil-modified ester polymer which is rendered water soluble by neutralization with ammonia or an amine and which is capable of air drying to a water-resistant coating film upon volatilization of said ammonia or amine after spraying the polymer onto a substrate surface, (b) about 20 to about 60 wt. % of dimethyl ether, (c) about 20 to about 40 wt. % of water, (d) about 1 to about 20 wt. % of at least one aliphatic monohydric alcohol of the formula R-OH wherein R is an unsubstituted straight or branched chain alkyl group containing from 1 to 6 carbon atoms, (e) about 1 to about 10 wt. % of at least one water soluble polar organic coalescing solvent, (f) 0 to about 3 wt. % of at least one surfactant, (g) 0 to about 15 wt. % of at least one pigment, (h) 0 to about 1 wt. % of at least one pH stabilizer, (i) 0 to about 2 wt. % of at least one antifoam agent, (j) 0 to about 2 wt. % of at least one plasticizer, and, (k) 0 to about 0.5 wt. % of at least one drier for said film-forming polymer, said dimethyl ether, water, at least one monohydric alcohol and at least one polar organic coalescing solvent being present in proportions to provide a single liquid phase propellant-active carrier solution having a pH of about 7.2 to about 10 and in which said film-forming polymer is dissolved and the remainder of the components of the composition are dissolved or suspended.

Claim 8

The composition of claim 5 wherein said dimethyl ether is present in an amount from about 20 about 40% by weight.

Claim 9

The composition of claim 5 wherein said water is present in an amount of about 20 to about 35% by weight.

Claim 10

The composition of claim 5 wherein said monohydric alcohol is present in an amount of about 5 to about 20% by weight.

Claim 11

The composition of claim 5 wherein said coalescing solvent is present in an amount of about 5 to about 10% by weight.

Claim 12

The composition of claim 5 wherein said dimethyl ether is present in an amount of about 20 to about 40% by weight, said water is present in an amount of about 20 to about 35% by weight, said monohydric alcohol is present in amount of about 5 to about 20% by weight, and said coalescing solvent is present in an amount of about 5 to about 10% by weight.

Claim 13

The composition of claim 10 wherein said monohydric alcohol is ethanol or isopropanol.

Claim 14

The composition of claim 5 wherein said pH is about 7.4 to about 7.9.

Claim 15

The composition of claim 5 wherein said continuous film is pigmented and said at least one pigment is present in said composition in an amount of about 5 to about 15% by weight.

Claim 16

The composition of claim 1 wherein said film-forming polymer is an oil-modified alkyd resin.

Claim 17

The composition of claim 5 wherein said film-forming polymer is an oil-modified alkyd resin.