Fireproofing

Claim 2

A fireproofing composition containing an aqueous solution of a fire retardant water-soluble inorganic ammonium salt and a surface tension reducing amount of a surfactant selected from the group consisting of organic polyphosphoric ester-acids and salts thereof, wherein said ester acids are coesters of an aliphatic alcohol and a nonionic adduct of ethylene oxide and a reactive-hydrogen-containing organic compound in which coesters less than all of the phosphate protons are consumed by ester bonds.

Claim 3

The composition according to claim 1 wherein the said surfactant is a potassium salt of said organic polyphosphoric ester acid.

Claim 4

The composition according to claim 1 wherein the said surfactant is present in an amount in the range of 0.25% to 3% (inclusive) by volume of the composition.

Claim 5

The composition according to claim 3 wherein the said amount of surfactant is in the range 0.3% to 1% (inclusive) by volume.

Claim 6

The composition according to claim 1 wherein the surface tension of the composition is in the range 25 to 30 (inclusive) dynes per cm.

Claim 7

The composition according to claim 5 wherein the said surface tension is in the range 26 to 28 (inclusive) dynes per cm.

Claim 8

The composition according to claim 1 wherein the said ammonium salt is selected from the class consisting of ammonium bromide, ammonium chloride, monoammonium phosphate, diammonium phosphate and mixtures thereof.

Claim 9

The composition according to claim 1 wherein the said inorganic ammonium salt is present in an amount of 15% to 40% (inclusive) by weight of the composition.

Claim 10

The composition according to claim 8 wherein the said amount of inorganic ammonium salt is 20% to 30% (inclusive) by weight.

Claim 11

The composition according to claim 1 wherein the specific gravity of the composition at room temperature is in the range 1.07 to 1.17 (inclusive).

Claim 12

The composition according to claim 10 wherein the specific gravity is in the range 1.10 to 1.13 (inclusive).

Claim 13

The composition according to claim 1 wherein the composition is substantially neutral.

Claim 14

The composition according to claim 12 wherein the pH of the composition is in the range 7.0 to 7.2 (inclusive).

Claim 15

A fireproofing composition comprising an aqueous solution of a fire-retardant water soluble inorganic ammonium salt and a surfactant selected from the group consisting of organic polyphosphoric ester acids and salts thereof, wherein said ester acids are coesters of an aliphatic alcohol and a non-ionic adduct of ethylene oxide and a reactive-hydrogen-containing organic compound in which coesters less than all of the phosphate protons are consumed by ester bonds, the said inorganic ammonium salt constituting 15% to 40% (inclusive) by weight of the composition, the said surfactant constituting 0.25% to 3% (inclusive) by volume of the composition, and the composition having a surface tension in the range 25 to 30 (inclusive) dynes per cm and being substantially neutral.

Claim 16

A fireproofing composition comprising an aqueous solution of a fire-retardant water soluble inorganic ammonium salt and a surfactant selected from the group consisting of organic polyphosphoric ester acids and salts thereof, wherein said ester acids are coesters of an aliphatic alcohol and a non-ionic adduct of ethylene oxide and a reactive-hydrogen-containing organic compound in which coesters less than all of the phosphate protons are consumed by ester bonds, the said inorganic ammonium salt constituting 15% to 40% (inclusive) by weight of the composition, the said surfactant constituting 0.25% to 3% (inclusive) by volume of the composition, and the composition having a surface tension in the range 25 to 30 (inclusive) dynes per cm and being substantially neutral.

Claim 17

The composition according to claim 14 wherein the amount of inorganic ammonium salt is 20% to 30% (inclusive) by weight, the amount of surfactant is 0.3% to 1% (inclusive) by volume and the composition has a surface tension in the range 26 to 28 (inclusive) dynes per cm and has a pH in the range 7.0 to 7.2 (inclusive).

Claim 18

A fireproofing composition according to claim 1 comprising an aqueous solution of a fire-retardant water soluble inorganic ammonium salt wherein said salt is also soluble in a water-miscible polyalkylene glycol and the aqueous solution of said salt and surfactant also comprises a leach-retarding amount of said water-miscible polyalkylene glycol.

Claim 19

The composition according to claim 16 wherein the polyalkylene glycol is a water-miscible polyethylene glycol.

Claim 20

The composition according to claim 17 wherein the polyethylene glycol has a molecular weight in the range 1500 to 7000 (inclusive).

Claim 21

The composition according to claim 16 wherein the amount of polyalkylene glycol is in the range 2% to 10% (inclusive) by weight of the composition.

Claim 22

The composition according to claim 19 wherein said amount of polyalkylene glycol is in the range 5% to 10% (inclusive) by weight of the composition.

Claim 23

The composition according to claim 16 wherein the amount of polyalkylene glycol is in the range 10% to 50% (inclusive) by weight based on the weight of the inorganic salt.

Claim 24

The composition according to claim 21 wherein the said amount of polyalkylene glycol is in the range 20% to 40% (inclusive) based upon the weight of the inorganic salt.

Claim 25

The composition according to claim 14 comprising also a leach retardant amount of a polyalkylene glycol which is water miscible and in which the inorganic salt is soluble.

Claim 26

A fireproofing composition comprising an aqueous solution of a fire-retardant water-soluble inorganic ammonium salt and a surface tension reducing amount of a surfactant selected from the group consisting of organic ester-acids and ester-salts of phosphoric or polyphosphoric acid, wherein said ester-acids or ester-salts are co-esters of a C 6 -C 16 aliphatic alcohol and a nonionic adduct of ethylene-oxide and reactive-hydrogen-containing organic compounds selected from the group consisting of C 6 -C 18 alkylated phenols, C 6 -C 25 aliphatic alcohols, and C 6 -C 20 aliphatic monocarboxylic acids, amines or mercaptans; and wherein less than all of the phosphate protons are consumed by the ester bonds so that said co-esters contain at least one monohydrogen ortho phosphate group or its corresponding salt per molecule.

Claim 27

A fireproofing composition comprising an aqueous solution of a fire-retardant water-soluble inorganic ammonium salt and a surface tension reducing amount of a surfactant selected from the group consisting of organic ester-acids and ester-salts of phosphoric or polyphosphoric acid, wherein said ester-acids or ester-salts are co-esters of a C 6 -C 16 aliphatic alcohol and a nonionic adduct of ethylene-oxide and reactive-hydrogen-containing organic compounds selected from the group consisting of C 6 -C 18 alkylated phenols, C 6 -C 25 aliphatic alcohols, and C 6 -C 20 aliphatic monocarboxylic acids, amines or mercaptans; and wherein less than all of the phosphate protons are consumed by the ester bonds so that said co-esters contain at least one monohydrogen ortho phosphate group or its corresponding salt per molecule.

Claim 28

A fireproofing composition comprising an aqueous solution of a fire-retardant water soluble inorganic ammonium salt and a surfactant selected from the group consisting of organic ester acids and ester-salts of phosphoric or polyphosphoric acid, the said inorganic salt constituting 15% to 40% (inclusive) by weight of the composition, the said surfactant constituting 0.25% to 3% (inclusive) by volume of the composition, and the composition having a surface tension in the range 25 to 30 (inclusive) dynes per cm and being substantially neutral; wherein said ester-acid or ester-salt is a co-ester of a C 6 -C 16 aliphatic alcohol and a nonionic adduct of ethylene oxide and a reactive-hydrogen-containing organic compound selected from the group consisting of C 6 -C 18 alkylated phenols, C 6 -C 25 aliphatic alcohols, and C 6 -C 20 aliphatic monocarboxylic acids, amines or mercaptans; and wherein in said co-ester less than all of the orthophosphate protons are consumed by the ester bonds so that said co-ester contains at least one monohydrogen orthophosphate gorup or its salt.

Claim 29

A fireproofing composition comprising an aqueous solution of a fire-retardant water soluble inorganic ammonium salt and a surfactant selected from the group consisting of organic ester acids and ester-salts of phosphoric or polyphosphoric acid, the said inorganic salt constituting 15% to 40% (inclusive) by weight of the composition, the said surfactant constituting 0.25% to 3% (inclusive) by volume of the composition, and the composition having a surface tension in the range 25 to 30 (inclusive) dynes per cm and being substantially neutral; wherein said ester-acid or ester-salt is a co-ester of a C 6 -C 16 aliphatic alcohol and a nonionic adduct of ethylene oxide and a reactive-hydrogen-containing organic compound selected from the group consisting of C 6 -C 18 alkylated phenols, C 6 -C 25 aliphatic alcohols, and C 6 -C 20 aliphatic monocarboxylic acids, amines or mercaptans; and wherein in said co-ester less than all of the orthophosphate protons are consumed by the ester bonds so that said co-ester contains at least one monohydrogen orthophosphate gorup or its salt.

Claim 30

A fireproofing composition according to claim 24 wherein said ammonium salt is also soluble in a water-miscible polyalkylene glycol and wherein said composition also comprises a leach-retarding amount of said water-miscible polyalkylene glycol.

Claim 31

A fireproofing composition according to claim 24 wherein said nonionic adduct of ethylene oxide and said organic compound contains from 1 to 40 moles of ethylene oxide per mole of said reactive-hydrogen-containing organic compound and wherein said nonionic adduct is present in a weight proportion of about 5 to 85 parts per 100 parts combined of said nonionic adduct and said aliphatic C 6 -C 16 alcohol.

Claim 32

The fireproofing composition of claim 24 wherein said C 6 -C 16 aliphatic alcohol and said nonionic adduct combined are present within the range from about 1:1 to about 5:1 to the total number of moles of said phosphoric or polyphosphoric acid, calculated as phosphorous pentoxide.