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A composition and method for treating substrates

A kind of composition and substrate technology, applied in the field of white fabrics and compositions for making substrates antifouling

Inactive Publication Date: 2013-05-22
UNILEVER NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accordingly, the teachings of this application cannot be used to provide sacrificial layers that resist water and oily stains on surfaces such as fabrics

Method used

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  • A composition and method for treating substrates
  • A composition and method for treating substrates
  • A composition and method for treating substrates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment -1

[0082] Example-1: With Al 3+ Composition of salt (aluminum nitrate)

[0083] By changing the water-soluble salt (Al 3+ salt) to fluoroalkoxysilane to prepare several preferred compositions and several control compositions. All experiments were carried out using tridecafluoro-(1,1,2,2-tetrahydrooctyl)trimethoxysilane. Seven ratios were tested; 1:1, 1:5, 5:1, 1:10, 3:5, 4:5 and 10:1. The recipe is as follows.

[0084] Table 2

[0085]

[0086] annotation:

[0087] 1. In all compositions, the balance (to make up 100wt%) is water and ethanol with a ratio of 1:9;

[0088] 2. Comp* means composition;

[0089] 3. Compositions marked with "*" are control compositions;

[0090] 4. Examples 17*, 18, 19 and 20* were performed in different series of experiments, thus leading to slightly different results.

[0091] Treatment procedure and measurement of contact angle

[0092] Fifty grams of all compositions 1-20 were taken into separate beakers. Fifty grams of eth...

Embodiment -2

[0110] Example-2: With Fe 3+ Composition of salt and fluoroalkoxysilane

[0111] with Fe 3+ Salt (ferric nitrate) The experiment performed in Example-1 was repeated. By changing the Fe 3+ The ratio between salt and fluoroalkoxysilane (silane) is used to prepare the preferred composition. All experiments were carried out using tridecafluoro-(1,1,2,2-tetrahydrooctyl)trimethoxysilane. Table-7 describes the recipe.

[0112] Table-7

[0113]

[0114] annotation : In all compositions, the balance (to make up 100 wt%) is water and ethanol in a ratio of 1:9.

[0115] Fe only 3+ An aqueous salt solution treated several cotton samples and several glass slides. Several cotton samples and several glass slides were treated with the alcoholic solution of fluoroalkoxysilane only. Several cotton samples and several glass slides were treated with pure fluoroalkoxysilane. The oil and water contact angles were recorded on the above treated cotton and glass. These values ​...

Embodiment -3

[0126] Example-3: with Ca 2+ Experiments performed with salt (calcium chloride)

[0127] The experiments carried out in Examples-1 and 2 were repeated with compositions comprising calcium chloride. By changing the Ca 2+ The ratio between salt and fluoroalkoxysilane is used to prepare the preferred composition. All experiments were carried out using tridecafluoro-(1,1,2,2-tetrahydrooctyl)trimethoxysilane. The formula is as follows:

[0128] Table 12

[0129]

[0130] annotation : In all compositions, the balance (to make up 100 wt%) is water and ethanol in a ratio of 1:9.

[0131] For comparative analysis, some slides were treated only with an aqueous solution of calcium chloride, and some slides were treated only with an alcoholic solution of fluoroalkoxysilane. Several glass slides were treated with pure fluoroalkoxysilane. The contact angles on glass and cotton are as follows:

[0132] Table-13: Oil and Water Contact Angles on Glass - Calcium Chloride ...

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Abstract

The present invention relates to a composition and a method for treating substrates, such as fabrics; particularly to make the substrate stain repellent. The invention has been developed primarily for use on fabrics and glass, and will be described hereinafter with reference to these applications. It is an object of the present invention to provide both aqueous and oily stain repellence. We have found that some or all the problems of prior art may be solved or ameliorated with aqueous-alcoholic compositions which include a water-soluble salt of a multivalent metal ion, and a fluoro alkoxy silane with the ratio of water-soluble salt: fluoro alkoxy silane is from1:5 to 5:1.

Description

field of invention [0001] The present invention relates to compositions and methods for treating substrates, such as fabrics, especially for rendering substrates stain repellent. [0002] The invention was mainly developed for use with fabrics and glass and will be described below with reference to these applications. [0003] Background of the invention [0004] Any discussion of prior art referred to throughout the specification should in no way be considered as an acknowledgment that such prior art is generally known or forms part of the common general knowledge in the field. [0005] Fabrics and hard surfaces are usually cleaned with detergent. Standard detergent compositions include surfactants and builders. Surfactants are able to clean fabrics. Some cleaner compositions also contain soda ash to enhance cleaning. Many cleaner compositions also include specialized polymers to aid in stain removal. The aforementioned polymers are known as soil release polymers (SRP)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/17D06M11/20D06M11/155D06M11/56D06M11/57D06M11/65C03C17/10D06M13/513C03C17/30C07F7/18C09D183/08
CPCC03C17/10D06M11/20D06M11/155D06M13/513D06M2200/11D06M11/57C03C17/30D06M2200/12C07F7/1804D06M11/17D06M11/65C09D183/08D06M11/56
Inventor S.达斯K.杜塔A.普拉马尼克
Owner UNILEVER NV
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