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whitening composition

A technology of composition and mixture, applied in the field of whitening and brightening laundry compositions, which can solve the problems of whiteness and cleaning loss

Active Publication Date: 2020-03-10
UNILEVER IP HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process results in an overall loss of whiteness and cleanliness throughout the wash load

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] An aqueous liquid laundry detergent was prepared having the following formula:

[0118]

[0119]

[0120] This formulation was used to wash eight 5x5 cm pieces of woven cotton cloth in a tergotometer set at 200 rpm. Washing with 2.3 g / L formulation was carried out in 800 ml of 6° French hard water at 20° C. for 1 hour. To simulate particulate fouling, 0.04 g / L of 100% compressed carbon black (from Sigma-Aldrich) was added to the wash liquor.

[0121] Once the washing has been completed, the cotton test substance is rinsed twice in 500ml of fresh water, the dryness is removed and the color is measured on a reflectometer and expressed as a CIE L*a*b* value.

[0122] A formulation containing Sokalan HP20 (BASF), an ethoxylated polyethyleneimine polymer PEI(600)20EO, was tested as a comparative polymer for anti-redeposition benefits.

[0123] A formulation containing a negatively charged alkoxylated polyarylphenol, Dispersogen LFH, from Clariant (tristyrylphenol pol...

Embodiment 2

[0128] An aqueous liquid laundry detergent was prepared having the following formula:

[0129]

[0130]

[0131] This formulation was used to wash eight 5x5 cm pieces of woven cotton cloth in a tergotometer set at 200 rpm. The wash was carried out with 2.3 g / L of the formulation in 800 ml of 26° French hard water at 20° C. for 1 hour. To simulate particulate fouling, 0.04 g / L of 100% compressed carbon black (from Sigma-Aldrich) was added to the wash liquor. To simulate an oily soil, (6.3 g) of SBL2004 soil strip (from Warwick Equest) was added to the wash liquor.

[0132] Once the washing has been completed, the cotton test substance is rinsed twice in 500ml of fresh water, the dryness is removed and the color is measured on a reflectometer and expressed as a CIE L*a*b* value.

[0133] test contains NN7718 (BASF), a polycondensation product of naphthalenesulfonic acid and formaldehyde, and lignosulfonate as a formulation of comparative sulfonated aromatic polymers fo...

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Abstract

The present invention provides a household laundry whitening and brightening composition comprising a charged surfactant, a negatively charged alkoxylated polyarylphenol and a perfume.

Description

technical field [0001] The present invention relates to the use of whitening and brightening laundry compositions. Background technique [0002] It is desirable to maintain and improve the whiteness and brightness of textiles during home laundering. The problem is that dirt removed from one garment is re-deposited on another. The problem is exacerbated by the presence of human oil (sebum) on clothes and in the wash, which serves to enhance the deposition of soil in the wash. This process results in an overall loss of whiteness and cleanliness throughout the wash load. To improve this problem, dispersion polymers such as alkoxylated polyethyleneimines have been widely added to detergents. Ethoxylated PEI (PEI=polyethyleneimine) are known as anti-redeposition polymers from CA 121 0009. Certain cellulases have also been used to prevent redeposition by altering the surface properties of cotton fabrics. Novozymes describes cellulases for domestic laundry in WO02 / 099091 and W...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D1/37C11D1/83C11D3/00C11D3/37C11D3/50C11D11/00
CPCC11D1/37C11D1/83C11D3/0036C11D3/3707C11D3/50C11D1/06C11D1/146C11D1/22C11D1/345C11D1/29C11D2111/12
Inventor S·N·巴彻勒
Owner UNILEVER IP HLDG BV