Liquid detergent and cleaning agent composition

A technology of liquid detergent and composition, applied in detergent composition, coating detergent composition, detergent compounding agent, etc., can solve the problems of prolonged dissolution time and more active oxygen

Inactive Publication Date: 2009-07-29
EVONIK DEGUSSA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the coating layer increases to 12.5% ​​by weight, the dissolution time is extended to about 9 minutes, but because the active oxygen lost in storage is too much, it is proved that the sodium percarbonate coated in this way is not suitable for containing about 5% by weight of water. liquid detergent
According to EP 0 992 575 A1, the dissolution time of sodium percarbonate is further increased by using alkali metal silicates with coating ratios greater than 3 to 5 and correspondingly large amounts, but the products thus obtained lead to the already described gray coloring

Method used

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  • Liquid detergent and cleaning agent composition
  • Liquid detergent and cleaning agent composition
  • Liquid detergent and cleaning agent composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0067] a) Preparation of coated bleach

[0068] Two-layer coated sodium percarbonate is prepared by coating sodium percarbonate in a fluidized bed, the first layer mainly containing sodium sulfate and the second layer mainly containing sodium silicate. Details of the preparation and modifications can be found in DE 102 61 161.0.

[0069] In these examples, commercially available sodium percarbonate coated with 6% by weight of sodium sulfate was used as starting material, i.e. Q30 and Q35 from Degussa Company, the difference is only in particle size distribution, Q35 is coarser than Q30 (Q30: D 50 =0.55mm, Q35: D 50 = 0.70mm).

[0070] Coat Q30 or Q35 in a fluidized bed coating device using water glass solution. Spraying was carried out at a fluidized bed temperature of about 60°C. Air was used as fluidized bed gas at an inlet temperature of about 100°C. After spraying, the temperature of the incoming air is slightly lowered, and post-drying is carried out at a fluidized ...

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Abstract

The present invention relates to liquid detergent and cleaning compositions with high storage stability. It contains a liquid medium with a water content of up to 15% by weight and a particulate coated bleach suspended therein. The bleaching agent has a dissolving time of at least 5 minutes and is coated with at least two layers: the innermost layer contains one or more inorganic salts formed from hydrates as the main component, and accounts for 0.2 to 5% by weight of the coated bleaching agent The outer layer contains SiO 2 with M 2 An alkali metal silicate having a ratio of O (M is an alkali metal) greater than 2.5 is used as a main component. A preferred composition contains sodium percarbonate as bleaching agent and has an innermost layer mainly sodium sulphate and an outer layer mainly 0.5-1.5% by weight sodium silicate (ratio 3.2-4.2).

Description

technical field [0001] The present invention relates to a liquid detergent and cleaner composition comprising a liquid medium having a water content of up to 15% by weight and a particulate coated bleach suspended in the liquid medium. Background technique [0002] While detergents and cleaners containing bleach are commonly used in powder or granular form, there is still interest in marketing and using these products in liquid form. [0003] GB 1 303 810 discloses pourable liquid compositions for cleaning and washing purposes comprising a clear liquid medium and one or more particulate ingredients suspended therein. The liquid medium, which may be aqueous or non-aqueous, contains one or more cleaning active ingredients such as anionic, nonionic or cationic surfactants for the intended use. The material suspended in the liquid medium preferably contains such ingredients that produce a specific technical effect in the composition. Examples mentioned in this document are ble...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D3/39C11D17/00C01B15/10
CPCC11D17/0039C11D3/3942C01B15/106C11D17/0004C11D17/0013C01D7/38
Inventor 乌尔丽克·孔茨西尔克·施托舍克克劳斯·齐默尔曼拉尔夫·奥韦尔迪克米夏尔多·芬德哈拉尔德·雅各布
Owner EVONIK DEGUSSA GMBH
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