A kind of co-modified organosilicon composition and preparation method thereof

Abstract

A co-modified organosilicon composition and a preparation method thereof, belonging to the field of foam control agents; comprising the following components: co-modified linear hydrogen-containing polysiloxane, vinyl alkyl glycidyl ether, dialkylamine, methyl methacrylate base silicone resin, silica and catalyst; the molar ratio of the co-modified linear hydrogen-containing polysiloxane, vinyl alkyl glycidyl ether and dialkylamine is 1:5-10:5-10. The co-modified organosilicon composition of the present invention forms a space macromolecular dendritic structure under the combined action of a long-chain alkyl group and an aromatic group, and the viscosity of the obtained organosilicon composition is relatively small; The introduction of agglomerates improves the compatibility of the silicone composition, is easy to emulsify, has good dispersibility in water, and is not easy to affect the fabric; Soft and fluffy feel without the yellowing problems of common aminopolysiloxanes.

Description

technical field [0001] The invention belongs to the field of foam control agents, and in particular relates to a co-modified organosilicon composition and a preparation method thereof. Background technique [0002] Household and industrial detergents are one of the necessities of modern life. They are mainly divided into liquid detergents and powder detergents. Their state and washing characteristics have their own advantages and disadvantages. They are widely used in industrial production and daily life. [0003] Among them, the main components of liquid detergents are surfactants, builders, essences and water; medium and high-grade detergents also contain fabric conditioners (softening factors), enzymes, bacteriostatic agents, anti-ultraviolet rays and color-protecting solids. Functional components such as colorants. Among them, the main decontamination substances are anionic surfactants and some non-ionic surfactants, such as sodium dodecylbenzenesulfonate, sodium dodecy...

AI Technical Summary

Problems solved by technology

US5387364 has introduced the long-chain alkyl silane prepared by hydrogen-containing polysiloxane and olefin through hydrosilylation reaction, and then mixed with silicone resin and white carbon black to make foam control agent active ingredient used in detergent, but The obtained silicone paste has high viscosity and is not easy to control; US6521587 prepared active substances with alkyl polysiloxane, polydimethylsiloxane, hydrophobic particles, silicone resin, etc., but the effect is not good

CN1807512 has introduced polydimethylsiloxane, silicone resin and hydrophobic particle white carbon black as main components, adds a small amount of water to form the foam control composition of detergent in the preparation process; US6521586 has introduced the use of alpha-methylbenzene Ethylene-modified polymethyl ethyl siloxane, and then mixed with hydrophobic white carbon black and silicone resin to make detergent-specific silicone paste, but this is easy to involve the use of vinyl or expensive polymethyl ethyl siloxane -Use of methylhydrogen siloxane, thus higher cost

These silicone pastes have a common feature that the viscosity of the silicone paste is high, and it is not easy to handle during production and use; the emulsion or powder products prepared with these silicone pastes usually have the disadvantages of poor stability and easy precipitation

In practical applications, it is often easy to dissociate from the cleaning process and adhere to the surface of the object to be cleaned, causing secondary pollution or blemishes

At the same time, these defoamers only have a single function of foam control, which is slightly single under the background that people are increasingly pursuing simplicity and efficiency.

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