Process for the production of silico-amino compounds and their condensation products

Claim 2

The process for the production of silico-amino resinous condensation products by the following steps: a. mixing silico-formic acid with an amino compound selected from the group consisting of urea, thiourea, melamine, aniline, guanidine, saccharin, propyl urea, butyl urea, benzene and toluene sulfonamides, ammeline, dicyandiamide, aliphatic diamines, other alkyl-substituted ureas and mixtures thereof in a ratio of 0.5 to 2 mols of silico-formic acid to one mol of the amino compound; b. adding an aldehyde selected from the group consisting of an aqueous solution of formaldehyde, formaldehyde, acetaldehyde, butyraldehyde, chloral, acrolein, furfural, hexamethylene tetramine and mixtures thereof in a ratio of 1 to 3 mols to one mol of amino compound; c. adjusting the pH to a pH of 4 to 5 with an acid catalyst selected from the group consisting of sulfuric acid, hydrochloric acid, formic acid, acetic acid, tartaric acid, oxalic acid, aromatic sulfonic acid, acid salts, acid esters such as acid alkyl phosphates and mixtures thereof; d. heating said mixture to 60° to 100°C while agitating for 20 to 40 minutes; thereby e. producing a silico-amino resinous condensation product.

Claim 3

The method of claim 1 wherein the pH is adjusted in step (c) to a pH of 7.

Claim 4

The method of claim 1 wherein the pH is adjusted in step (c) to a pH of 8 to 10 by adding an alkali catalyst instead of an acid catalyst, the alkali catalyst being selected from the group consisting of sodium carbonate, calcium hydroxide, sodium hydroxide, ammonia, alkanolamine and mixtures thereof.

Claim 5

The method of claim 1 wherein an alkali catalyst selected from the group consisting of sodium carbonate, calcium hydroxide, sodium hydroxide and mixtures thereof is added to moist silioc-formic acid until the pH is 8 to 10 in step a and mixed with the said amino compound; then the mixture is heated to 135° to 150°C while agitating for 20 to 30 minutes; thereby producing a silico-amino compound.

Claim 6

The process for the production of silico-amino compounds and their resinous condensation products by the following steps: a. mixing a moist silico-formic acid and an alkali catalyst selected from the group consisting of sodium carbonate, calcium hydroxide, sodium hydroxide, ammonia, alkanolamines and mixtures thereof until the pH is 8 to 10; b. adding an amino compound selected from the group consisting of urea, thiourea, melamine, aniline, guanidine, saccharin, propyl urea, butyl urea, benzene and toluene sulfonamides, ammeline, dicyandiamide, aliphatic diamines, other alkyl-substituted ureas and mixtures thereof in a ratio of one mol to 0.5 to 2 mols of silico-formic acid; c. heating said mixture to 135° to 150°C while agitating for 20 to 30 minutes; thereby d. producing a silico-amino compound; e. adding to said silico-amino compound aldehyde selected from the group consisting of an aqueous solution of formaldehyde, formaldehyde, acetaldehyde, butyraldehyde, chloral, acrolein, furfural, hexamethylene tetramine and mixtures thereof in a ratio of 1 to 3 mols to one mol of said amino compound; f. heating said mixture to 60° to 100°C while agitating for 20 to 40 minutes; thereby g. producing silico-amino resinous products.

Claim 7

The process for the production of silico-amino compounds and their resinous condensation products by the following steps: a. mixing a moist silico-formic acid and an alkali catalyst selected from the group consisting of sodium carbonate, calcium hydroxide, sodium hydroxide, ammonia, alkanolamines and mixtures thereof until the pH is 8 to 10; b. adding an amino compound selected from the group consisting of urea, thiourea, melamine, aniline, guanidine, saccharin, propyl urea, butyl urea, benzene and toluene sulfonamides, ammeline, dicyandiamide, aliphatic diamines, other alkyl-substituted ureas and mixtures thereof in a ratio of one mol to 0.5 to 2 mols of silico-formic acid; c. heating said mixture to 135° to 150°C while agitating for 20 to 30 minutes; thereby d. producing a silico-amino compound; e. adding to said silico-amino compound aldehyde selected from the group consisting of an aqueous solution of formaldehyde, formaldehyde, acetaldehyde, butyraldehyde, chloral, acrolein, furfural, hexamethylene tetramine and mixtures thereof in a ratio of 1 to 3 mols to one mol of said amino compound; f. heating said mixture to 60° to 100°C while agitating for 20 to 40 minutes; thereby g. producing silico-amino resinous products.

Claim 8

The method of claim 5 wherein the pH is adjusted in step (d) to a pH of 4 to 5 with an acid catalyst selected from the group consisting of sulfuric acid, hydrochloric acid, formic acid, acetic acid, tartartic acid, oxalic acid, aromatic sulfonic acid, acid salts, acid esters such as acid alkyl phosphates and mixtures thereof.