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Hydroxyl polyether-terminated polydimethylsiloxane and blue light emulsion of hydroxyl polyether-terminated polydimethylsiloxane as well as preparation method of blue light emulsion

A technology of polydimethylsiloxane and hydroxy polyether, which is applied in textiles, papermaking, fiber processing, etc., can solve the problems of compatibility to achieve softness and smoothness, short process pot life, and inability to achieve non-bleaching oil, etc. To achieve wide compatibility, high solid content, to achieve the effect of compatibility

Active Publication Date: 2014-01-08
HUAIAN KAIYUE TECH DEV
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Problems solved by technology

However, those skilled in the art know that these two emulsions have their own defects in extended applications. For example, anionic emulsions are relatively stable, but they cannot be compatible with weak cationic amino silicone oil softeners in the textile industry to achieve softness and slipperiness. Compatibility will cause flocculation and demulsification reactions, resulting in the deposition of demulsified oil lumps on fabrics and equipment, which cannot be used; in practical applications, cationic hydroxyl emulsions cannot achieve true oil-free floating, although many scientists and technicians have done a lot in this field. Stability improvement experiments, and corresponding products have been practically applied in a limited range, but the problem of oil floating has not been fundamentally solved, so that the application is still limited. For example, in the textile industry, even a small amount of oil floating can cause uneven dyeing of downstream fabrics
In this case, people hope that non-ionic hydroxy silicone oil emulsion or non-ionic dimethyl silicone oil emulsion can make up for the above defects. It is known that the existing traditional non-ionic hydroxy silicone oil emulsion or dimethyl silicone oil emulsion basically adopts non-emulsion polymerization It is prepared by mechanical emulsification method. In order to stabilize the emulsion, thickeners are mostly used in the emulsion. The stability of such emulsions is only reliable when used in high concentrations. When diluted, the thickener will weaken or lose its stabilizing effect, resulting in emulsion Floating oil or layering, so that the working life is short or impossible to apply; in this context, the market urgently needs a thickener-free, stable dilution, stable mixing with softener and stable dilution of the mixed solution, and The above-mentioned anionic hydroxyl emulsion or cationic hydroxyl emulsion can also impart a dry slippery function to the substrate, a nonionic polydimethylsiloxane emulsion with a wide range of compatibility

Method used

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  • Hydroxyl polyether-terminated polydimethylsiloxane and blue light emulsion of hydroxyl polyether-terminated polydimethylsiloxane as well as preparation method of blue light emulsion
  • Hydroxyl polyether-terminated polydimethylsiloxane and blue light emulsion of hydroxyl polyether-terminated polydimethylsiloxane as well as preparation method of blue light emulsion
  • Hydroxyl polyether-terminated polydimethylsiloxane and blue light emulsion of hydroxyl polyether-terminated polydimethylsiloxane as well as preparation method of blue light emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] At room temperature, in a 2000ml electric stirring glass reactor, add 1160g number average molecular formula: CH 2 =CH-CH 2 O-(C 3 h 6 O) 5 (C 2 h 4 O) 15 -H's acryl polyether (alkenyl mole number 1.15mol) and 807g number average molecular formula is: H-Si(CH 3 ) 2 O[Si(CH 3 ) 2 O] 20 Si(CH 3 ) 2-H hydrogen-terminated polydimethylsiloxane (the number of moles of hydrogen groups is 1mol, the number of moles of alkenyl groups: the number of moles of hydrogen groups = 1.15:1), and after starting to stir, add 1~2g of speier catalyst (the mass of chloroplatinic acid The content is 1%), stirring to raise the temperature to 120~150°C and stirring for 1~3 hours until the system is completely transparent and then lowered to room temperature to obtain a transparent medium-low viscosity hydroxyl polyether-terminated polydimethylsiloxane A1. The viscosity measured by a rotary viscometer at 25°C is 800~1000mpa.s.

Embodiment 2

[0032] At room temperature, in a 1000ml electric stirring glass reactor, add 550g number average molecular formula: CH 2 =CH-CH 2 O-(C 2 h 4 O) 10 -H's acryl polyether (alkenyl mole number 1.10mol) and 437g number average molecular formula is: H-Si(CH 3 ) 2 O[Si(CH 3 ) 2 O] 10 Si(CH 3 ) 2 -H hydrogen-terminated polydimethylsiloxane (the number of moles of hydrogen groups is 1mol, the number of moles of alkenyl groups: the number of moles of hydrogen groups = 1.10:1), and after starting to stir, add 0.5~1g of Karstdet catalyst (the mass content of platinum element 0.3%), stirred and heated up to 120~150°C and stirred for 1~3 hours until the system was completely transparent and then lowered to room temperature to obtain transparent and medium-low viscosity hydroxyl polyether-terminated polydimethylsiloxane A2. 25 The viscosity measured by ℃ rotary viscometer is 300~500mpa.s.

Embodiment 3

[0034] At room temperature, add 850g D 4 (or DMC) and 150g of A1 of Example 1 (D 4 Or the quality of DMC: the quality of A1=85:15), add 1~3g of alkali gel catalyst (D 4 Or DMC or small molecule hydroxyl silicone oil with hydroxyl content of 6~8% and KOH are stirred and reacted at 130~160°C for 0.5~3h until the system is transparent, and KOH accounts for 10% of the total mass of the reactants), and the temperature is raised to 120~150°C, Equilibrate the telomerization reaction under stirring for 5-8 hours, then stop heating and stirring, and the reactant naturally cools down to room temperature to obtain milky white to milky yellow medium-high viscosity polydimethylsiloxane B1 terminated with hydroxyl polyether. Rotate at 25°C The viscosity measured by the type viscometer is 30000~40000mpa.s.

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Abstract

The invention discloses hydroxyl polyether-terminated polydimethylsiloxane and a blue light emulsion of hydroxyl polyether-terminated polydimethylsiloxane as well as a preparation method of the blue light emulsion. The blue light emulsion of hydroxyl polyether-terminated polydimethylsiloxane has a function of enabling a base material to be anti-sticky, dry and smooth, which is the same as the functions of conventional negative ion, positive ion and nonionic hydroxyl silicone oil emulsions. Different from the conventional negative ion, positive ion and nonionic hydroxyl silicone oil emulsions, the blue light emulsion of hydroxyl polyether-terminated polydimethylsiloxane has the characteristics that the water diluent (the solid content is 0.5-5%) of the blue light emulsion and the blending diluent (the solid content is 0.5-5%) formed by the blue light emulsion and an amino silicon oil emulsion at random ratio are highly stable; when the blue light emulsion is placed for a long time (above 90 days), the blue light emulsion does not layer and has no floating oil or oil spots; the blue light emulsion does not contain any thickening agent and can realize high solid content (the solid content convenient for use can reach 50%); as the blue light emulsion belongs to a non-ionic type, the wide compatibility can also be realized.

Description

technical field [0001] The invention relates to a modified polydimethylsiloxane emulsion, in particular to a dilute stable hydroxyl polyether-terminated polydimethylsiloxane, the blue light emulsion and the blue light emulsion prepared by using the siloxane The preparation method belongs to the field of organic silicon chemical new materials. Background technique [0002] Hydroxyl-terminated polydimethylsiloxane emulsions are currently mainly divided into anionic hydroxyl silicone oil emulsion (commonly known as anionic hydroxyl emulsion) and cationic hydroxyl silicone oil emulsion (commonly known as cationic hydroxyl emulsion); the anionic hydroxyl emulsion synthesized by the prior art is based on ten Dialkylbenzenesulfonic acid is used as a catalyst and emulsifier, and it is obtained by emulsion polymerization and telomerization of organosilicon rings in water. The solid content of the obtained emulsion usually does not exceed 30%, otherwise it is difficult to obtain, and ...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G77/46D06M15/647
Inventor 张国杰李桂军李桂民张锋
Owner HUAIAN KAIYUE TECH DEV
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