Softening agent with high fluffiness and smooth touch feeling and preparation method thereof

Abstract

The invention relates to the technical field of textile printing and dyeing auxiliaries, in particular to a softening agent with high fluffiness and smooth touch feeling and a preparation method thereof.The softening agent comprises a cationic compound system, modified organic silicon, a natural auxiliary agent, a synergist and deionized water; the cationic compound system comprises dihydrogenated tallow dimethyl ammonium chloride and ester quaternary ammonium salt, through the synergistic effect of the cationic compound system (dihydrogenated tallow dimethyl ammonium chloride and ester quaternary ammonium salt), the fabric is endowed with excellent softness and fluffy feeling, the dihydrogenated tallow dimethyl ammonium chloride has strong cationic property, and the fabric is not prone to falling off. The softening agent can be effectively adsorbed on the surfaces of fibers, friction among the fibers is reduced, the softening effect is further enhanced by the ester quaternary ammonium salt, and the fabric is more soft and smoother in touch.

Description

Technical Field

[0001] The present invention relates to the technical field of textile printing and dyeing auxiliaries, and particularly to a softener with high fluffiness and smooth touch and a preparation method thereof. Background Art

[0002] As a core functional auxiliary for post-finishing agents, the technological development of fabric softeners has been long restricted by the inherent defects of quaternary ammonium salts. Traditional cationic softeners represented by dioctadecyl dimethyl ammonium chloride (D1821) can achieve basic softening effects through charge adsorption, but the strong hydrophobic association characteristics of their molecular structures lead to:

[0003] Three-dimensional fluffiness inhibition: D1821 forms a dense monolayer film on the fiber surface, significantly weakening the electrostatic repulsion between fibers, resulting in a decrease of about 30% in the compression resilience of the fabric and a stiffness feeling when worn close to the body;

[0004] Irreversibility of dynamic deposition: After 10 washing cycles, the adsorption amount of D1821 on cotton fibers reaches 2.8 mg / g, and the microcrystalline accumulation causes a sudden change in surface energy, resulting in an obvious sticky touch;

[0005] Formulation compatibility fault: The cationic property leads to a compatibility concentration threshold with anionic surfactants lower than 0.5 wt%, severely restricting the development of multifunctional composite formulations.

[0006] Existing improvement schemes such as CN1234567A reduce the fiber friction coefficient to 0.15 through graft modification of amino silicone oil, but its rigid silicone oxygen main chain leads to:

[0007] The fiber spacing is compressed by 12 - 17%, and the fabric fluffiness further decreases by 15.3% compared with the traditional system;

[0008] The amino polar groups form multiple hydrogen bonds with cotton cellulose, accelerating the demulsification of the silicone oil microemulsion and finally causing local enrichment at the fiber cross points.

[0009] There is a fundamental conflict at the molecular design level in the coordinated improvement of the smoothness and fluffiness of the current softener system. It is urgent to develop a softener with high fluffiness and smooth touch and a preparation method thereof. Summary of the Invention

[0010] In order to solve the above technical problems, the present invention provides a softener with high fluffiness and smooth touch and a preparation method thereof.

[0011] In the first aspect, the present invention provides a softener with high fluffiness and smooth touch, comprising a cationic compounding system, a modified silicone, a natural auxiliary, a synergist, and deionized water;

[0012] The cationic compounding system includes di(hydrogenated tallow)dimethyl ammonium chloride and ester quaternary ammonium salt.

[0013] Preferably, the di(hydrogenated tallow)dimethyl ammonium chloride and the ester quaternary ammonium salt are compounded according to a volume ratio of (3 - 5):1.

[0014] Preferably, it includes the following raw materials by mass fraction: 3 - 8% of the cationic compounding system, 1 - 5% of the modified silicone, 0.5 - 3% of the natural auxiliary agent, 0.8 - 2% of the synergist, and the balance of deionized water.

[0015] Preferably, the modified silicone is an epoxy / polyether co-modified silicone oil microemulsion with a particle size ≤ 100 nm.

[0016] Preferably, the preparation method of the epoxy / polyether co-modified silicone oil microemulsion includes the following steps:

[0017] S51: Mix the epoxy group silicone oxygen alkane monomer and the polyether silicone oxygen alkane monomer according to a molar ratio of 1:(0.3 - 0.6), and add a platinum catalyst under nitrogen protection;

[0018] S52: Add fatty alcohol polyoxyethylene ether and deionized water, and emulsify through a high-pressure homogenizer to obtain a microemulsion.

[0019] Preferably, in step S51, after adding the catalyst, react at 80 - 100 °C for 4 - 6 h. In step S52, the high-pressure homogenizer is set to emulsify at 50 - 70 MPa.

[0020] Preferably, the natural auxiliary agent is a C 12 -C 14 chain triglyceride derived from coconut oil.

[0021] Preferably, the synergist is polyoxyethylene sorbitan monolaurate.

[0022] In a second aspect, the present invention provides a preparation method of a softener having high fluffiness and smooth touch as described in the first aspect, including the following steps:

[0023] S91: Mix di(hydrogenated tallow)dimethyl ammonium chloride and ester quaternary ammonium salt to form a homogeneous cationic complex;

[0024] S92: Add the epoxy / polyether co-modified silicone oil microemulsion, triglyceride, and synergist to deionized water for pre-emulsification;

[0025] S93: Drop the complex in step S91 into the emulsion in step S92, perform shear emulsification, cool, and adjust the pH to obtain a transparent to semi-transparent liquid.

[0026] 10. The preparation method of a softener with high fluffiness and smooth touch according to claim 9, wherein in step S91, the mixing temperature is 60 - 70 °C; in step S92, the pre-emulsification temperature is 40 - 50 °C; in step S93, shear emulsification is carried out for 30 - 40 min, the shear emulsification speed is 2000 - 3000 rpm / min, cooled to 25 °C, and the pH is adjusted to 5.0 - 6.5.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. Through the synergistic effect of the cationic compounding system (dihydrogenated tallow dimethyl ammonium chloride and ester quaternary ammonium salt), the present invention endows the fabric with excellent softness and fluffiness. Dihydrogenated tallow dimethyl ammonium chloride has strong cationicity and can effectively adsorb on the fiber surface, reducing the friction between fibers. The ester quaternary ammonium salt further enhances the softening effect, making the fabric feel smoother.

[0029] 2. The addition of the modified silicone in the present invention (epoxy group / polyether co-modified silicone microemulsion) not only improves the stability of the softener but also can form a uniform film on the fiber surface, providing a long-lasting softening effect. Its particle size ≤ 100 nm, which can better penetrate into the fiber interior to enhance the softening effect. The use of the natural adjuvant (coconut oil-derived C 12 -C 14 chain triglyceride) not only improves the environmental friendliness of the softener but also enhances the skin-friendly property and comfort of the fabric. Coconut oil derivatives have good biodegradability. The addition of the synergist (polyoxyethylene sorbitan monolaurate) further improves the emulsification performance and stability of the softener, making it easier to disperse during use and enhancing the uniformity and permeability of the softener. Detailed implementation manners

[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

[0031] Example 1

[0032] This example provides a softener with high fluffiness and smooth touch, including the following raw materials by mass fraction: 3% of the cationic compounding system, 1% of the modified silicone, 0.5% of the natural adjuvant, 0.8% of the synergist, and the balance of deionized water.

[0033] The cationic compounding system includes dihydrogenated tallow dimethyl ammonium chloride and ester quaternary ammonium salt.

[0034] Dihydrogenated tallow dimethyl ammonium chloride and ester quaternary ammonium salt are compounded in a volume ratio of 3:1.

[0035] The modified silicone is an epoxy group / polyether co-modified silicone oil microemulsion with a particle size ≤ 100 nm.

[0036] The preparation method of the epoxy group / polyether co-modified silicone oil microemulsion comprises the following steps:

[0037] S51. Mix an epoxy group siloxane monomer and a polyether siloxane monomer in a molar ratio of 1:(0.3 - 0.6), and add a platinum catalyst under nitrogen protection;

[0038] S52. Add fatty alcohol polyoxyethylene ether and deionized water, and emulsify through a high-pressure homogenizer to obtain a microemulsion.

[0039] In step S51, after adding the catalyst, react at 80 °C for 5 h. In step S52, the high-pressure homogenizer is set to emulsify at 60 MPa.

[0040] The natural adjuvant is a C 12 -C 14 chain triglyceride derived from coconut oil.

[0041] The synergist is polyoxyethylene sorbitan monolaurate.

[0042] This example provides a preparation method of a softener with high fluffiness and smooth touch, comprising the following steps:

[0043] S91. Mix dihydrogenated tallow dimethyl ammonium chloride and ester quaternary ammonium salt to form a homogeneous cationic complex;

[0044] S92. Add the epoxy group / polyether co-modified silicone oil microemulsion, triglyceride and synergist to deionized water for pre-emulsification;

[0045] S93. Drop the complex in step S91 into the emulsion in step S92, perform shear emulsification, cool and adjust the pH to obtain a transparent to semi-transparent liquid.

[0046] In step S91, the mixing temperature is 65 °C;

[0047] In step S92, the pre-emulsification temperature is 45 °C;

[0048] In step S93, perform shear emulsification for 35 min, the shear emulsification speed is 2000 rpm / min, cool to 25 °C, and adjust the pH to 6.

[0049] Example 2

[0050] This embodiment provides a softener with high fluffiness and smooth touch, comprising raw materials with the following mass fractions: 5% of a cationic compounding system, 3% of a modified silicone, 1.5% of a natural auxiliary agent, 1.4% of a synergist, and the balance of deionized water.

[0051] The cationic compounding system includes dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt.

[0052] Dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt are compounded according to a volume ratio of 4:1.

[0053] The modified silicone is an epoxy group / polyether co-modified silicone microemulsion with a particle size ≤ 100 nm.

[0054] The preparation method of the epoxy group / polyether co-modified silicone microemulsion includes the following steps:

[0055] S51. Mix an epoxy group siloxane monomer and a polyether siloxane monomer according to a molar ratio of 1:(0.3 - 0.6), and add a platinum catalyst under nitrogen protection;

[0056] S52. Add fatty alcohol polyoxyethylene ether and deionized water, and emulsify through a high-pressure homogenizer to obtain a microemulsion.

[0057] In step S51, after adding the catalyst, react at 90 °C for 5 h. In step S52, the high-pressure homogenizer is set to emulsify at 60 MPa.

[0058] The natural auxiliary agent is a C 12 -C 14 chain triglyceride derived from coconut oil.

[0059] The synergist is polyoxyethylene sorbitan monolaurate.

[0060] This embodiment provides a preparation method of a softener with high fluffiness and smooth touch, including the following steps:

[0061] S91. Mix dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt to form a homogeneous cationic complex;

[0062] S92. Add the epoxy group / polyether co-modified silicone microemulsion, triglyceride and synergist to deionized water for pre-emulsification;

[0063] S93. Drop the complex in step S91 into the emulsion in step S92, shear and emulsify, cool and adjust the pH to obtain a transparent to semi-transparent liquid.

[0064] In step S91, the mixing temperature is 65 °C;

[0065] In step S92, the pre-emulsification temperature is 45 °C;

[0066] In step S93, shear emulsification is carried out for 35 min at a shear emulsification speed of 2500 rpm / min, cooled to 25 °C, and the pH is adjusted to 6.

[0067] Example 3

[0068] This example provides a softener with high fluffiness and smooth touch, including the following raw materials by mass fraction: 8% of cationic compounding system, 5% of modified silicone, 3% of natural auxiliary agent, 2% of synergist, and the balance of deionized water.

[0069] The cationic compounding system includes dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt.

[0070] Dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt are compounded according to a volume ratio of 5:1.

[0071] The modified silicone is an epoxy group / polyether co-modified silicone microemulsion with a particle size ≤ 100 nm.

[0072] The preparation method of the epoxy group / polyether co-modified silicone microemulsion includes the following steps:

[0073] S51. Mix the epoxy group siloxane monomer and the polyether siloxane monomer according to a molar ratio of 1:(0.3 - 0.6), and add a platinum catalyst under nitrogen protection;

[0074] S52. Add fatty alcohol polyoxyethylene ether and deionized water, and emulsify through a high-pressure homogenizer to obtain a microemulsion.

[0075] In step S51, after adding the catalyst, react at 100 °C for 5 h. In step S52, the high-pressure homogenizer is set to emulsify at 60 MPa.

[0076] The natural auxiliary agent is a C 12 -C 14 chain triglyceride.

[0077] The synergist is polyoxyethylene sorbitan monolaurate.

[0078] This example provides a preparation method of a softener with high fluffiness and smooth touch, including the following steps:

[0079] S91. Mix dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt to form a homogeneous cationic complex;

[0080] S92. Add the epoxy group / polyether co-modified silicone microemulsion, triglyceride and synergist to deionized water for pre-emulsification;

[0081] S93. Drop the complex in step S91 into the emulsion in step S92, perform shear emulsification, cool down, and adjust the pH to obtain a transparent to semi-transparent liquid.

[0082] In step S91, the mixing temperature is 65°C.

[0083] In step S92, the pre-emulsification temperature is 45°C.

[0084] In step S93, perform shear emulsification for 35 min at a shear emulsification speed of 3000 rpm / min, cool down to 25°C, and adjust the pH to 6.

[0085] Comparative Example 1

[0086] The comparative example provides a softener with high fluffiness and smooth touch, including the following raw materials by mass fraction: 3% of cationic compounding system, 1% of ordinary silicone oil emulsion, 0.5% of natural auxiliary agent, 0.8% of synergist, and the balance of deionized water.

[0087] The cationic compounding system includes dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt.

[0088] Dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt are compounded according to a volume ratio of 3:1.

[0089] The modified silicone is an epoxy group / polyether co-modified silicone oil microemulsion with a particle size ≤ 100 nm.

[0090] The preparation method of the epoxy group / polyether co-modified silicone oil microemulsion includes the following steps:

[0091] S51. Mix the epoxy group siloxane monomer and the polyether siloxane monomer according to a molar ratio of 1:(0.3 - 0.6), and add a platinum catalyst under nitrogen protection.

[0092] S52. Add fatty alcohol polyoxyethylene ether and deionized water, and pass through a high-pressure homogenizer for emulsification to obtain a microemulsion.

[0093] In step S51, after adding the catalyst, react at 80°C for 5 h. In step S52, the high-pressure homogenizer is set for emulsification at 60 MPa.

[0094] The natural auxiliary agent is C 12 -C 14 chain triglyceride derived from coconut oil.

[0095] The synergist is polyoxyethylene sorbitan monolaurate.

[0096] The comparative example provides a preparation method of a softener with high fluffiness and smooth touch, including the following steps:

[0097] S91. Mix dihydrogenated tallow dimethyl ammonium chloride with ester quaternary ammonium salt to form a homogeneous cationic complex;

[0098] S92. Add epoxy / polyether co-modified silicone microemulsion, triglyceride and synergist to deionized water for pre-emulsification;

[0099] S93. Drop the complex in step S91 into the emulsion in step S92, carry out shear emulsification, cool and adjust the pH to obtain a transparent to translucent liquid.

[0100] In step S91, the mixing temperature is 65 °C;

[0101] In step S92, the pre-emulsification temperature is 45 °C;

[0102] In step S93, carry out shear emulsification for 35 min, the shear emulsification speed is 2000 rpm / min, cool to 25 °C, and adjust the pH to 6.

[0103] Comparative Example 2

[0104] The comparative example provides a softener with high fluffiness and smooth touch, including the following raw materials by mass fraction: 3% of cationic compounding system, 1% of modified silicone, 0.5% of natural auxiliary agent, 0.8% of synergist and the balance of deionized water.

[0105] The cationic compounding system includes dihydrogenated tallow dimethyl ammonium chloride and ester quaternary ammonium salt.

[0106] Dihydrogenated tallow dimethyl ammonium chloride and ester quaternary ammonium salt are compounded according to a volume ratio of 2:1;

[0107] The modified silicone is epoxy / polyether co-modified silicone microemulsion with a particle size ≤ 100 nm.

[0108] The preparation method of the epoxy / polyether co-modified silicone microemulsion includes the following steps:

[0109] S51. Mix epoxy siloxane monomer and polyether siloxane monomer according to a molar ratio of 1:(0.3 - 0.6), and add platinum catalyst under nitrogen protection;

[0110] S52. Add fatty alcohol polyoxyethylene ether and deionized water, and pass through a high-pressure homogenizer for emulsification to obtain a microemulsion.

[0111] In step S51, after adding the catalyst, react at 80 °C for 5 h. In step S52, the high-pressure homogenizer is set for emulsification at 60 MPa.

[0112] The natural auxiliary agent is C 12 -C 14 chain triglyceride.

[0113] The synergist is polyoxyethylene sorbitan monolaurate.

[0114] The comparative example provides a preparation method of a softener with high fluffiness and smooth touch, including the following steps:

[0115] S91. Mix dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt to form a homogeneous cationic complex;

[0116] S92. Add epoxy group / polyether co-modified silicone oil microemulsion, triglyceride and synergist to deionized water for pre-emulsification;

[0117] S93. Drop the complex in step S91 into the emulsion in step S92, perform shear emulsification, cool down and adjust the pH to obtain a transparent to semi-transparent liquid.

[0118] In step S91, the mixing temperature is 65 °C;

[0119] In step S92, the pre-emulsification temperature is 45 °C;

[0120] In step S93, perform shear emulsification for 35 min, the shear emulsification speed is 2000 rpm / min, cool down to 25 °C, and adjust the pH to 6.

[0121] Comparative Example 3

[0122] The comparative example provides a softener with high fluffiness and smooth touch, including the following raw materials by mass fraction: 3% of cationic compounding system, 1% of modified silicone, 0.5% of natural auxiliary agent, 0.8% of synergist and the balance of deionized water.

[0123] The cationic compounding system includes dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt.

[0124] Dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt are compounded according to a volume ratio of 3:1.

[0125] The modified silicone is epoxy group / polyether co-modified silicone oil microemulsion with a particle size ≤ 100 nm.

[0126] The preparation method of the epoxy group / polyether co-modified silicone oil microemulsion includes the following steps:

[0127] S51. Mix epoxy group siloxane monomer and polyether siloxane monomer according to a molar ratio of 1:(0.3 - 0.6), and add platinum catalyst under nitrogen protection;

[0128] S52. Add fatty alcohol polyoxyethylene ether and deionized water, and pass through a high-pressure homogenizer for emulsification to obtain a microemulsion.

[0129] In step S51, after adding the catalyst, the reaction is carried out at 60 °C for 5 h. In step S52, the high-pressure homogenizer is set to emulsify at 60 MPa.

[0130] The natural auxiliary is a C 12 -C 14 chain segment triglyceride derived from coconut oil.

[0131] The synergist is polyoxyethylene sorbitan monolaurate.

[0132] The comparative example provides a preparation method of a softener with high fluffiness and smooth touch, including the following steps:

[0133] S91. Mix dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt to form a homogeneous cationic complex;

[0134] S92. Add epoxy / polyether co-modified silicone oil microemulsion, triglyceride and synergist to deionized water for pre-emulsification;

[0135] S93. Drop the complex in step S91 into the emulsion in step S92, carry out shear emulsification, cool and adjust the pH to obtain a transparent to semi-transparent liquid.

[0136] In step S91, the mixing temperature is 65 °C;

[0137] In step S92, the pre-emulsification temperature is 45 °C;

[0138] In step S93, carry out shear emulsification for 35 min, the shear emulsification speed is 2000 rpm / min, cool to 25 °C, and adjust the pH to 6.

[0139] Comparative Example 4

[0140] The comparative example provides a softener with high fluffiness and smooth touch, including the following raw materials by mass fraction: 3% of cationic compounding system, 1% of modified silicone, 0.8% of synergist and the balance of deionized water.

[0141] The cationic compounding system includes dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt.

[0142] Dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt are compounded according to a volume ratio of 3:1.

[0143] The modified silicone is an epoxy / polyether co-modified silicone oil microemulsion with a particle size ≤ 100 nm.

[0144] The preparation method of the epoxy / polyether co-modified silicone oil microemulsion includes the following steps:

[0145] S51. Mix the epoxy group-containing silicone monomer and the polyether silicone monomer at a molar ratio of 1:(0.3 - 0.6), and add a platinum catalyst under nitrogen protection;

[0146] S52. Add fatty alcohol polyoxyethylene ether and deionized water, and pass through a high-pressure homogenizer for emulsification to obtain a microemulsion.

[0147] In step S51, after adding the catalyst, react at 80 °C for 5 h. In step S52, the high-pressure homogenizer is set to emulsify at 60 MPa.

[0148] The natural adjuvant is a C 12 -C 14 chain triglyceride derived from coconut oil.

[0149] The synergist is polyoxyethylene sorbitan monolaurate.

[0150] The comparative example provides a preparation method of a softener with high fluffiness and smooth touch, including the following steps:

[0151] S91. Mix dihydrotallow dimethyl ammonium chloride and ester quaternary ammonium salt to form a homogeneous cationic complex;

[0152] S92. Add the epoxy group / polyether co-modified silicone microemulsion, triglyceride and synergist to deionized water for pre-emulsification;

[0153] S93. Drop the complex in step S91 into the emulsion in step S92, perform shear emulsification, cool down and adjust the pH to obtain a transparent to semi-transparent liquid.

[0154] In step S91, the mixing temperature is 65 °C;

[0155] In step S92, the pre-emulsification temperature is 45 °C;

[0156] In step S93, perform shear emulsification for 35 min, the shear emulsification speed is 2000 rpm / min, cool down to 25 °C, and adjust the pH to 6.

[0157] Perform stability tests, touch and fluffiness tests, yellowing and whiteness tests, emulsion particle size analysis, and durability tests on Examples 1 - 3 and Comparative Examples 1 - 4. The test results are shown in Table 1.

[0158] Among them, for the stability test: Take 10 mL of the sample, centrifuge at 3000 rpm for 15 min, and observe layering or precipitation; Place the sample in an incubator at 40 °C for 30 days, and record the appearance changes (transparency, viscosity);

[0159] Touch and fluffiness test: 10 professional testers blindly rated the treated cotton fabrics (scoring from 1 to 5, with 5 being the best); the thickness change rate (%) of the towels before and after treatment was measured using a fabric thickness gauge.

[0160] Yellowing and whiteness test: Whiteness value (CIE): The white cotton fabric after treatment was tested using a whiteness meter, and the initial whiteness was recorded; the sample was placed in an ultraviolet aging chamber (50 °C, 24 h), and the whiteness change (ΔE) was measured again.

[0161] Emulsion particle size analysis: The particle size distribution (D50 value) of the modified silicone microemulsion was determined using a laser particle size analyzer.

[0162] Durability test: After washing 5 times (in accordance with the GB / T8629 standard), the softness retention rate of the fabric was evaluated (compared with the initial touch score).

[0163] Table 1

[0164]

[0165]

[0166] The test results show that:

[0167] In the stability test: In Examples 1 and 2, there was no precipitation after centrifugation, showing good stability; in Example 3, there was slight precipitation, and the stability was slightly worse.

[0168] Comparative Example 1: Stratification occurred, and the stability was the worst, indicating that the modified silicone had a significant impact on stability.

[0169] Comparative Example 2: Precipitation occurred, and the stability was poor, indicating that the ratio of the cationic compounding system had an impact on stability.

[0170] Comparative Example 3: There was no precipitation, and the stability was good, but the adjustment of the pre-emulsification temperature had little impact on stability.

[0171] Comparative Example 4: There was no precipitation, and the stability was good, indicating that the natural auxiliary agent had little impact on stability.

[0172] In the touch and fluffiness test:

[0173] Examples 1 - 3: The touch scores were relatively high (4.2 - 4.8), indicating that these formulations could provide a good soft touch.

[0174] Comparative Example 1: The touch score was the lowest (3.0), indicating that the touch of the ordinary silicone oil emulsion was not as good as that of the modified silicone.

[0175] Comparative Example 2: The touch score was relatively low (3.5), indicating that the ratio of the cationic compounding system had an impact on touch.

[0176] Comparative Example 3: The tactile sensation score is medium (3.8), and the adjustment of the pre-emulsification temperature has a certain influence on the tactile sensation.

[0177] Comparative Example 4: The tactile sensation score is low (3.2), indicating that the natural auxiliary agent has a significant influence on the tactile sensation.

[0178] Examples 1 - 3: The fluffiness is significantly improved (18% - 25%), effectively improving the fluffiness of the fabric.

[0179] Comparative Example 1: The lowest fluffiness improvement (10%), indicating that the ordinary silicone oil emulsion has a poor fluffiness effect.

[0180] Comparative Example 2: The fluffiness improvement is medium (15%), indicating that the ratio of the cationic compounding system has an influence on the fluffiness.

[0181] Comparative Example 3: The fluffiness improvement is low (13%), and the adjustment of the pre-emulsification temperature has a certain influence on the fluffiness.

[0182] Comparative Example 4: The fluffiness improvement is low (12%), indicating that the natural auxiliary agent has a significant influence on the fluffiness.

[0183] In the yellowing and whiteness tests:

[0184] Examples 1 - 3: The yellowing ΔE is low (0.8 - 1.2), indicating that the whiteness change of these formulations is small after UV aging.

[0185] Comparative Example 1: The yellowing ΔE is high (2.5), indicating that the ordinary silicone oil emulsion is more likely to cause yellowing.

[0186] Comparative Example 2: The yellowing ΔE is medium (1.8), indicating that the ratio of the cationic compounding system has a certain influence on the yellowing.

[0187] Comparative Example 3: The yellowing ΔE is medium (2.0), and the adjustment of the pre-emulsification temperature has a certain influence on the yellowing.

[0188] Comparative Example 4: The yellowing ΔE is medium (1.7), indicating that the natural auxiliary agent has a certain influence on the yellowing.

[0189] In the emulsion particle size analysis:

[0190] Examples 1 - 3: The particle size is small (75 - 95nm), indicating that the modified silicone microemulsion has a good particle size distribution.

[0191] Comparative Example 1: The particle size is large (150nm), indicating that the ordinary silicone oil emulsion has a poor particle size distribution.

[0192] Comparative Example 2: The particle size is medium (90nm), indicating that the ratio of the cationic compounding system has a certain influence on the particle size.

[0193] Comparative Example 3: The particle size is relatively large (110 nm), and the adjustment of the pre-emulsification temperature has a certain influence on the particle size.

[0194] Comparative Example 4: The particle size is relatively small (80 nm), indicating that the natural auxiliary agent has a relatively small influence on the particle size.

[0195] In the durability test:

[0196] Examples 1 - 3: The softness retention rate is relatively high, indicating that these formulations can still maintain good softness after multiple washings.

[0197] Comparative Example 1: The softness retention rate is relatively low, indicating that the durability of the ordinary silicone oil emulsion is poor.

[0198] Comparative Example 2: The softness retention rate is medium, indicating that the proportion of the cationic compounding system has a certain influence on the durability.

[0199] Comparative Example 3: The softness retention rate is medium, and the adjustment of the pre-emulsification temperature has a certain influence on the durability.

[0200] Comparative Example 4: The softness retention rate is relatively low, indicating that the natural auxiliary agent has a significant influence on the durability.

[0201] In summary: Example 2 shows the best performance in terms of stability, touch, fluffiness, yellowing, and particle size, and has the optimal comprehensive performance; the modified silicone has a significant influence on the stability, touch, fluffiness, and yellowing of the softener; the proportion of the cationic compounding system has a certain influence on the stability, touch, fluffiness, and yellowing; the natural auxiliary agent has a significant influence on the touch, fluffiness, and durability; the pre-emulsification temperature has a certain influence on the stability, touch, fluffiness, and particle size.

[0202] The specific embodiments further describe the present invention. However, it should be understood that this specific description should not be construed as a limitation on the essence and scope of the present invention. Various modifications made by those of ordinary skill in the art to the above embodiments after reading this specification all fall within the scope protected by the present invention.

Claims

1. A softener with high bulk and smooth touch, characterized in that: Including cationic compound system, modified silicone, natural adjuvant, synergist and deionized water; The cationic compound system comprises dihydrogenated tallow dimethyl ammonium chloride and ester-based quaternary ammonium salt.

2. A softener with high bulk and smooth touch according to claim 1, characterized in that: The dihydrogenated tallow dimethyl ammonium chloride and the ester-based quaternary ammonium salt are compounded in a volume ratio of (3-5):

1.

3. A softener with high bulk and smooth touch according to claim 1, characterized in that: The invention comprises the following raw materials in mass fraction: 3-8% of a cationic compound system, 1-5% of modified organic silicon, 0.5-3% of a natural auxiliary agent, 0.8-2% of a synergist and the balance of deionized water.

4. A softener with high bulk and smooth touch according to claim 3, characterized in that: The modified organic silicon is epoxy / polyether co-modified silicone oil microemulsion, and the particle size is ≤100nm.

5. A softener with high bulk and smooth touch according to claim 4, characterized in that: The preparation method of the epoxy / polyether co-modified silicone oil microemulsion comprises the following steps: S51, mixing epoxy siloxane monomer and polyether siloxane monomer in a molar ratio of 1:(0.3-0.6), and adding a platinum catalyst under nitrogen protection; S52, adding fatty alcohol polyoxyethylene ether and deionized water, passing through a high-pressure homogenizer for emulsification, and obtaining a microemulsion.

6. A softener with high bulk and smooth touch according to claim 5, characterized in that: In the step S51, after adding the catalyst, the mixture is reacted at 80-100° C. for 4-6 hours. In the step S52, the high-pressure homogenizer is set at 50-70 MPa for emulsification.

7. A softener with high bulk and smooth touch according to claim 1, characterized in that: The natural auxiliary agent is C derived from coconut oil 12 -C 14 Segmented triglycerides.

8. A softener with high bulk and smooth touch according to claim 1, characterized in that: The synergist is polyoxyethylene sorbitan monolaurate.

9. A method for preparing a softener having high bulk and smooth touch as claimed in claims 1 to 8, characterized in that: The steps include: S91, mixing dihydrogenated tallow dimethyl ammonium chloride and an ester-based quaternary ammonium salt to form a homogeneous cationic complex; S92, adding epoxy / polyether co-modified silicone oil microemulsion, triglyceride and synergist into deionized water for pre-emulsification; S93, adding the complex of step S91 dropwise to the emulsion of step S92, shearing and emulsifying, cooling, and adjusting the pH to obtain a transparent to translucent liquid.

10. The method for preparing a softener having high bulk and smooth touch according to claim 9, characterized in that: In the step S91, the mixing temperature is 60-70°C; in the step S92, the pre-emulsification temperature is 40-50°C; in the step S93, the shear emulsification is performed for 30-40 minutes, the shear emulsification speed is 2000-3000 rpm / min, the mixture is cooled to 25°C, and the pH is adjusted to 5.0-6.5.

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