Composition for removing cementitious material from a surface and associated methods

• US 7,938,912 B1
• Filed: 04/07/2009
• Issued: 05/10/2011
• Est. Priority Date: 04/07/2009
• Status: Active Grant

• Current Assignee: Green Products & Technologies, LLC
• Original Assignee: Green Products & Technologies, LLC
• Inventors: MacDonald, John
• Primary Examiner(s): CARRILLO, BIBI SHARIDAN
• Application Number:
  US12/419,379
• Time in Patent Office: 763 Days
• Field of Search: 510/108, 510/109, 510/421, 510/501, 510/505, 134/26, 134/28, 134/29, 134/34, 134/36, 134/42
• US Class Current: 134/42
• CPC Class Codes: C11D 1/72 Ethers of polyoxyalkylene glycols
• CPC Class Codes: C11D 2111/24 Mineral surfaces, e.g. stones, frescoes, plasters, walls or concretes
• CPC Class Codes: C11D 3/042 Acids
• CPC Class Codes: C11D 3/2006 Monohydric alcohols
• CPC Class Codes: C11D 3/2072 Aldehydes-ketones
• CPC Class Codes: C11D 3/30 Amines; Substituted amines ; Quaternized amines
• CPC Class Codes: C11D 3/323 urea or derivatives thereof

Abstract

A composition is provided for use in cleaning a surface of a cementitious material. The composition includes HCl, urea, complex substituted keto-amine-hydrochloride, an alcohol, an ethoxylate, and a ketone. A method of using the composition includes applying the composition to a surface from which it is desired to clean a cementitious material and removing the composition and released cementitious material from the surface.

Claims

1. A method for cleaning a surface of a cementitious material comprising:

providing a composition comprising HCl, urea, complex substituted keto-amine-hydrochloride, an alcohol, an ethoxylate, and a ketone;

applying the composition to a surface to release a cementitious material therefrom; and

removing the composition and released cementitious material from the surface.

2. The method recited in claim 1, wherein the alcohol comprises at least one of isopropyl alcohol and propargyl alcohol.

3. The method recited in claim 1, wherein the ethoxylate comprises ethoxylated nonylphenol.

4. The method recited in claim 1, wherein the ketone comprises methyl vinyl ketone.

5. The method recited in claim 1, wherein the composition comprises:

HCl, 40-60 wt %;

urea, 42 wt %;

complex substituted keto-amine-hydrochloride, 0.067 wt %;

isopropyl alcohol, 0.067 wt %;

ethoxylated nonylphenol, 0.022 wt %;

propargyl alcohol, 0.022 wt %;

methyl vinyl ketone, 0.022 wt %;

acetone, 0.022 wt %; and

acetophenone, 0.0022 wt %.

6. The method recited in claim 1, further comprising, prior to the applying step, diluting the composition with water in a range of 1:

1 to 6;

1 water;

composition.

7. The method recited in claim 1, wherein the removing step comprises abrading the surface to assist in releasing the cementitious material from the surface.

8. The method recited in claim 1, further comprising, following the applying step, leaving the composition on the surface for a period of time to permit the composition to soak into the cementitious material on the surface to assist in releasing the cementitious material from the surface.