# US 8,541,610 B2 · Preparation of substantially quaternized ammonium organosilane composition and self-stabilizing aqueous solution thereof

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- Number: US 8,541,610 B2
- Document ID: US8541610B2
- Status: Granted
- Kind: B2
- Application number: 13/504,130
- Filed: 2010-04-21
- Published: 2013-01-31
- Granted: 2013-09-24
- Earliest claimed: 2010-04-21
- Applicants: Alpay Taralp
- Inventors: Alpay Taralp
- Web page: https://patentgrep.com/patent/US8541610B2

## CPC

- C07F 7/1892: {by reactions not provided for in C07F7/1876 - C07F7/1888}
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)

## Abstract

This invention relates to the preparation of a partially quaternized ammonium organosilane composition, and a self-stabilizing aqueous solution of said composition, which serves to yield an antimicrobial polysilsesquioxane coating upon thermal curing. By way of this invention, an aqueous solution is prepared, comprised in part by a partially quaternized ammonium organosilane hydrolysate, characterized in that no further manipulation or addition of potentially costly ingredients are required to yield a stable and hence marketable product.

## Claims

### Claim 1

A method to synthesize an organosilyl quaternary amine composition of the type CH3(CHa)11-17(CH3)2N+(CH2)1-6Si(Z)3 X− the method comprising the steps of: preparing a two-component composition, comprising: CH3(CHa)11-17N(CH3)2 and X(CH2)1-6Si(Z)3 precursor materials, combined in a CH3(CHa)11-17N(CH3)2/X(CH2)1-6Si(Z)3 molar ratio of 0.85-1.5; and terminating the process at a product conversion corresponding to a yield of 45 to 65%, with respect to the limiting reagent.

### Claim 2

A method to synthesize an organosilyl quaternary amine composition of the type CH3(CHa)11-17(CH3)2N+(CH2)1-6Si(Z)3 X31 by preparing a two-component composition, comprising of CH3(CHa)11-17X and (CH3)2N(CH2)1-6Si(Z)3 precursor materials, combined in a CH3(CHa)11-17X/(CH3)2N(CH2)1-6Si(Z)3 molar ratio of 0.85-1.5, wherein the process is terminated at a product conversion corresponding to a yield of 45 to 65%, with respect to the limiting reagent.

### Claim 3 (depends on 1)

The method of claim 1 wherein said organosilyl quaternary amine composition is transformed at a temperature in the range of 85-130° C.

### Claim 4 (depends on 3)

The method of claim 3 wherein said organosilyl quaternary amine composition is reconstituted using only water.

### Claim 5 (depends on 4)

The method of claim 4 wherein said organosilyl quaternary amine composition is reconstituted over a temperature range of 13-40° C.

### Claim 6 (depends on 5)

The method of claim 5 wherein said organosilyl quaternary amine composition is reconstituted in an amount of water ranging from 9- to 39-fold by weight, to yield an aqueous solution, which is stable at room temperature for at least two weeks.

### Claim 7 (depends on 6)

The method of claim 6 wherein the thermally cured form of reconstituted solutions is antimicrobial and resistant to repeated washings.

### Claim 8 (depends on 2)

The method of claim 2, wherein said organosilyl quaternary amine composition is transformed at a temperature in the range of 85-130° C.

### Claim 9 (depends on 8)

The method of claim 8, wherein said organosilyl quaternary amine composition is reconstituted using only water.

### Claim 10 (depends on 9)

The method of claim 9, wherein said organosilyl quaternary amine composition is reconstituted over a temperature range of 13-40° C.

### Claim 11 (depends on 10)

The method of claim 10, wherein said organosilyl quaternary amine composition is reconstituted in an amount of water ranging from 9- to 39-fold by weight, to yield an aqueous solution, which is stable at room temperature for at least two weeks.

### Claim 12 (depends on 11)

The method of claim 11, wherein the thermally cured form of reconstituted solutions is antimicrobial and resistant to repeated washings.