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Method of cleaning

A technology of cleaning and cleaning composition, applied in the field of cleaning, which can solve the problems of color deterioration of colored fabrics, damage to the cleaning process, etc.

Pending Publication Date: 2020-03-17
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dyes in the wash liquor can also cause color deterioration of colored fabrics
Dirt, stains, bacteria, bad odors removed from the fabric may also redeposit on the fabric, compromising the cleaning process

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0194] EDC (N-(3-dimethylaminopropyl)-N'ethylcarbodiimide) was used to immobilize the oxidoreductase on on a solid substrate. The activity of the immobilized oxidoreductase samples was confirmed by adding 600 μl of syringaldazine onto 250 ml of liquid detergent solution. 0.06 ppm of immobilized oxidoreductase was added to the solution and the absorbance at 531 nm was measured over a certain period of time. The initial color of the solution was colorless / yellow, where the end point was purple.

[0195]

[0196] In the washing step comprising detergent composition 1, cotton and polycotton fabrics (including white and mixed color fabrics) are washed together. The wash water contains 13 liters of water and 30 to 60 g of detergent 1. The wash liquor also contained the sample of the above immobilized enzyme.

[0197] The following are illustrative examples of cleaning compositions of the present invention and are not intended to be limiting.

[0198] Detergent Composition ...

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Abstract

A method for cleaning a surface comprising contacting the surface with a wash liquor, the wash liquor comprising a cleaning composition and an oxidoreductase enzyme immobilised on a supporting substrate.

Description

technical field [0001] The present invention is in the field of cleaning. It relates to a method of cleaning, in particular a method of cleaning a surface with a washing liquid in the presence of an oxidoreductase immobilized on a support substrate. The present invention also relates to the use of an oxidoreductase immobilized on a support substrate for reducing malodor and dye transfer during cleaning. Background technique [0002] When a surface is cleaned by immersion in a washing liquid, dirt is carried into the liquid from the surface to be cleaned. Soil encompasses stains, scale, odors, bacteria, and the like. Dirt can be redeposited onto the surface being cleaned. There may also be color transfer from the surface being cleaned to the liquid. Color bleeding may occur during cleaning of the surface with washing liquid. During the cleaning process, dyes may migrate from the surface into the wash liquid. These dyes may deposit on other surfaces immersed in the wash ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N9/02C11D3/386
CPCC12N9/0061C12N9/0065C11D3/38654C11D3/38681
Inventor 蒙特塞拉特·瓜达卢普·巴斯克斯巴尔迪维索内尔·约瑟夫·兰特S·G·帕特森
Owner THE PROCTER & GAMBLE COMPANY
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