Anticorrosive composition

Patent metadata

Field	Value
Publication number	US-12454488-B2
Application number	US-202218282030-A
Country	US
Kind code	B2
Filing date	Mar 24, 2022
Priority date	Mar 25, 2021
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

An anticorrosive composition comprising
(a) one or more alkali metal silicate components of the formula Me 2 O·xSiO 2 , wherein x has a value of from 0.5 to 4.0, (b) one or more alkali metal phosphate components of the formula Me 2 O:nP 2 O 5 , wherein n has a value of from 0.33 to 1 and/or hydrates thereof, (c) one or more carboxylic acids having 6-22 carbon atoms and/or salts thereof: and the use of the composition for imparting anticorrosive properties to a material such as a mineral wool product.

First claim

The invention claimed is:

1 . A method of imparting anticorrosive properties to a product selected from mineral wool products and aerogel products, wherein the method comprises contacting at least a surface layer of the product with an anticorrosive composition, wherein the composition comprises:
100-500 g/L Na 2 SiO 3 , 2-50 g/L sebacic acid, 20-80 g/L Na 3 PO 4 , 0.1-100 g/L of at least one surface-active compound.

2 . The method of claim 1 , wherein the at least one surface-active compound is selected from soaps and surfactants.

3 . The method of claim 1 , wherein the at least one surface-active compound is selected from alkali stable water dispersible surfactants, alkali stable water soluble surfactants, and emulsifying surfactants.

4 . The method of claim 1 , wherein the composition further comprises a hydrophobic agent comprising at least one silicone compound.

5 . The method of claim 1 , wherein the composition further comprises one or more water-miscible organic solvents.

6 . The method of claim 1 , wherein the composition is dispersed in a mineral wool product.

7 . The method of claim 1 , wherein the product is selected from a pipe section, a roof product, a facade product, a mat, and a wired mat.

8 . The method of claim 1 , wherein the product is selected from mineral wool products.

9 . An anticorrosive composition, wherein the composition comprises: 100-500 g/L Na 2 SiO 3 , 2-50 g/L sebacic acid, 20-80 g/L Na 3 PO 4 , 0.1-100 g/L of at least one surface-active compound,
and wherein the composition is present on and/or in a mineral wool product or an aerogel product.

10 . The composition of claim 9 , wherein the mineral wool product or aerogel product is selected from a pipe section, a roof product, a facade product, a mat, and a wired mat.

11 . The composition of claim 9 , wherein the mineral wool product or aerogel product is a pipe section or a mat.

12 . The composition of claim 11 , wherein the composition is present in a surface layer of the pipe section or mat.

13 . The composition of claim 9 , wherein the at least one surface-active compound comprises at least one of a soap and a surfactant.

14 . The composition of claim 9 , wherein the composition further comprises a hydrophobic agent comprising at least one silicone compound.

Assignees

• Rockwool As

Inventors

• Hamza Osama
• Mattsson Rikke
• Paulsen Andreas Lundtang
• Hansen Mikkel Østergaard

Classifications

• F16L59/04

  Arrangements using dry fillers, e.g. using slag wool · CPC title

• F16L58/08

  by metal · CPC title

• C09D5/086

  Organic or non-macromolecular compounds · CPC title

• C09D5/084

  Inorganic compounds · CPC title

• C09D1/04 Primary

  with organic additives · CPC title