CN101638847B - Formaldehyde-free durable non-ironing finishing agent for treating cellulose fiber fabric - Google Patents

Abstract

The invention relates to the technical field of textile finishing agents, in particular to a formaldehyde-free durable non-ironing finishing agent; the finishing agent is prepared by adopting the following raw materials in proportion: 20.0-40.0 percent of acetal crosslinking agent, 28.0-50.0 percent of poly-polycarboxylic acid, 5.0-10.0 percent of polysiloxane, 8.0-15.0 percent of catalyst and 8.0-16.0 percent of deionized water; the method is characterized in that the crease recovery angle of the cellulose fiber fabric treated by the finishing agent can reach more than 299 degrees, the crease recovery angle can be kept more than 287 degrees after 5 times of water washing, the whiteness of the finished fabric is more than 78.2 percent, and the retention rate of tearing strength is 68 to 75 percent; the composition of the invention is suitable for cotton fibers, hemp fibers, bamboo pulp fibers (Lyocell), viscose fibers, Modal fibers and tencel fibers.

Description

A formaldehyde-free durable non-ironing finishing agent for treating cellulose fiber fabrics

Technical field:

The invention relates to the technical field of textile finishing agents, in particular to a formaldehyde-free durable non-ironing finishing agent and its preparation method and application.

Background technique:

Cellulose fiber fabrics have the advantages of soft touch, soft luster, good warmth retention, wear resistance, strong sweat absorption, and comfortable wearing. Ironing and other shortcomings, in order to improve its performance and commercial value, usually by adding non-ironing finishing agent for finishing processing. The non-ironing finishing agents used mainly include urea-formaldehyde, melamine-formaldehyde, dimethylol dihydroxyethylene urea, dimethylol carbamate, N-methylol amide resin initial shrinkage and etherification etc. The finished fabric has high dry and wet wrinkle resistance, and the seams and stitches formed during the pressing of the garment remain unchanged after washing, achieving an effect equivalent to that of synthetic fibers and wool. However, during the non-ironing finishing process, the finished cellulose fiber fabric decomposes and releases formaldehyde during storage or wearing, which affects human health and pollutes the environment. Formaldehyde-free durable non-ironing finishing agents are gradually replacing formaldehyde-based non-ironing finishing agents. Currently, formaldehyde-free non-ironing finishing agents mainly include the following categories:

(1) Polycarboxylic acid finishing agent

Butanetetracarboxylic acid (BTCA) and citric acid (CA) are represented by small molecular polycarboxylic acids, BTCA is a formaldehyde-free non-iron finishing agent with good effect, which is described in detail in US Patent No. 4,820,307, but The strong retention rate is low, and the price is relatively expensive; CA has the characteristics of easy availability, low price, safety and non-toxicity, but the finishing effect is not ideal. With maleic anhydride as the main unit, polymerized polycarboxylic acid is obtained through polymerization reaction. Because its molecular weight and the number of carboxyl groups on the molecular chain are adjustable, and the cost of raw materials is relatively low, the finishing effect is also ideal, but the acidity is too high , the fabric is prone to yellowing, and the loss of strength is relatively large. The technology of this aspect has been introduced in detail in Chinese patent CN01113532.8 and CN1090351A.

(2) Water-soluble heat-reactive polyurethane finishing agent

The film-forming performance of polyurethane finishing agent is better than that of amino resin, and it feels soft. In China, it has been combined with 2D resin or liquid ammonia treatment for non-iron finishing of pure cotton fabrics, which can obtain ideal non-ironing finishing effects, but it is not enough to achieve the level of non-ironing finishing alone, and it is generally used together with other resins. At present, this type of non-ironing finishing agent is still in the research and development stage, and the main obstacles come from two aspects: 1) the ideal synthetic monomer needs to be imported from abroad, so that the production cost is high; 2) the quality of mass production is unstable.

(3) Natural polymer chitosan finishing agent

Utilizing the solubility and film-forming properties of chitosan and the interconvertible chemical structure of chitosan and chitin, using chitosan as a raw material and acetic anhydride as a transformation curing agent, a carapace-type non-formaldehyde permanent iron can be obtained Finishing agent, the non-ironing performance of the finished cotton fabric is obviously improved, and the washability is better, the breaking strength is almost unchanged, the non-ironing effect is comparable to that of the synthetic 2D resin, and it does not have a significant impact on the whiteness of the fabric, but it cannot be used alone Use, and will reduce the breathability of cotton fabrics.

The present invention develops a new formaldehyde-free finishing agent with durable non-ironing function and its production technology by studying the formaldehyde-free durable non-ironing finishing agent and its application technology, and realizes the durable non-ironing finishing of cellulose fiber fabrics and the non-toxicization of the use process. technology and products.

Invention content:

The object of the present invention is to address the deficiencies of the prior art, and provide a formaldehyde-free durable non-ironing textile finishing agent for finishing cellulose fiber fabrics, which is formaldehyde-free, has a high wrinkle recovery angle, is washable, and has high whiteness. The wrinkle recovery angle of the cellulose fiber fabric treated with the finishing agent of the present invention can reach more than 299°, and after washing 5 times, the wrinkle recovery angle is more than 287°, the whiteness of the fabric after finishing is more than 78.2%, and the tear strength is retained The rate is between 68% and 75%.

Another object of the present invention is to provide a preparation method and application process of a formaldehyde-free durable non-ironing textile finishing agent for treating cellulose fiber fabrics.

The working principle of the formaldehyde-free durable non-ironing finishing agent of the present invention is:

The acetal crosslinking agent reacts with the reactive polysiloxane and the hydroxyl group, epoxy group, and amino group on the cellulose in the presence of a catalyst to generate corresponding ether bonds and N-hydroxyl compounds, which are further crosslinked into a network In the presence of a catalyst, the carboxyl groups of polypolycarboxylic acid can react with the hydroxyl groups on cellulose to connect the fiber molecules, forming a three-dimensional network of ester crosslinking between the macromolecules of cellulose, and polypolycarboxylic acid can also react under high temperature. It can condense and cross-link with reactive polysiloxane of a certain structure to form a network-like macromolecule. Thus, the reaction mechanism of the composition of the present invention is that in the presence of a catalyst, polypolycarboxylic acid, acetal crosslinking agent, reactive polysiloxane and cellulose molecules carry out crosslinking reaction to form a three-dimensional three-dimensional interactive network, giving the fabric Excellent anti-wrinkle, non-ironing and soft smoothness. At the same time, due to the interactive network structure between molecules, the molecular chain has increased significantly, which can effectively form bridge chains, improve the strength and washability of the fabric, and improve the durability of the fabric. BaiDu.

According to the above working principle, in order to achieve the above object, a formaldehyde-free durable non-ironing textile finishing agent for cellulose fiber fabrics, the composition is composed of the following components by weight percentage:

Acetal crosslinking agent 20.0%～40.0%;

Polypolycarboxylic acid 28.0%～50.0%;

Polyorganosiloxane 5.0%～10.0%;

Catalyst 8.0%～15.0%;

Deionized water 8.0%～16.0%,

Wherein, the cellulose fiber and its products include cotton fiber, hemp fiber, bamboo pulp fiber, Lyocel, viscose fiber, Modal fiber, tencel fiber; the acetal crosslinking agent is polyethylene glycol and ethylene The condensation product of dialdehyde; the polypolycarboxylic acid is a polymer of maleic acid, itaconic acid and acrylic acid; the polyorganosiloxane is a reactive polyorganosiloxane; the catalyst is magnesium chloride, citric acid, tartaric acid , aluminum sulfate, boric acid, ammonium chloride, sodium hypophosphite, or a combination of any two of the above substances.

The acetal crosslinking agent is obtained by dissolving polyethylene glycol and glyoxal in water as the reaction substance, using sulfamic acid as the catalyst, and reacting at 50-85°C for 4-8 hours. The molecular weight of the reaction product is 400-800 , the solid content is 60%, the pH value is 5.5-6.5, and the appearance is light-colored transparent liquid.

The polyorganosiloxane is one of amino silicone oil microemulsion, cationic silicone hydroxyl emulsion, amino polyether modified silicone oil and epoxy polyether modified silicone oil.

The relevant content of above-mentioned technical scheme is explained as follows:

1. In the above scheme, the polypolycarboxylic acid is dissolved in water with maleic acid, itaconic acid and acrylic acid as the reactant, ammonium ferrous sulfate is the activator, hydrogen peroxide is the catalyst, and reacts at 80-100°C for 3 It is obtained in ~6 hours, the molecular weight of the reaction product is 1200-1800, the solid content is 60%, the pH value is 3.5-4.5, and the appearance is a yellow transparent liquid.

2. In the above scheme, the amino silicone oil microemulsion is a liquid with an ammonia value of 0.4-0.6 mgHCL/g, a molecular weight of the amino silicone oil of 3000-5000, and an effective content of 60%; the cationic organosilicon hydroxyl emulsion is an effective content of 60%, a silicone emulsion with a hydroxyl value of 0.2-0.5 and a molecular weight of 500,000-800,000; amino polyether modified silicone oil has an ammonia value of 0.1-0.4mgHCL/g, and the mass ratio of polyether to siloxane is 1:1 ~1:4 water-based liquid; epoxy polyether modified silicone oil is a golden yellow liquid with an epoxy value of 0.05~0.2 and a mass ratio of polyether to siloxane of 1:1~1:3.

3. In the above scheme, the catalyst is a mixture of tartaric acid and aluminum sulfate, magnesium chloride or sodium hypophosphite.

4. In the above scheme, the mixture of tartaric acid and aluminum sulfate is composed of a mass ratio of tartaric acid and aluminum sulfate of 2:8 to 4:6.

5. In the above scheme, the preparation method of the formaldehyde-free durable non-ironing finishing agent for cellulose fiber fabric finishing is: first add the catalyst in the stated proportion into deionized water, and use a stirrer at a speed of 80 to 100r/min Stir for 10 to 15 minutes, add the acetal crosslinking agent in the stated proportion and continue to stir; then add polypolycarboxylic acid and organosiloxane, and stir for 30 minutes to obtain a light-colored translucent to transparent liquid, that is, the non- Formaldehyde durable non-ironing finishing agent.

6. In the above scheme, a formaldehyde-free durable non-ironing finishing method of cellulose fiber fabrics, the finishing method uses the formaldehyde-free durable non-ironing finishing agent of the present invention, and uses a padding or dipping finishing process to perform non-ironing finishing on the fabric; The process parameters are: the liquid-carrying rate of the fabric is 75%-85%, pre-dry at 95-100°C until the liquid-carrying rate of the fabric is 4%-8%, bake at 140-165°C for 5-18 minutes, and absorb moisture at room temperature for 24 hours .

7. The elastic recovery angle of the present invention is tested according to GB/T3819-1997 "Textile Product Standard-Measurement Recovery Angle Method of Textile Fabric Crease Recovery"; fabric tear strength is tested according to GB/T3917.3-1997 "Textile Fabric Tear Performance The third part is "Determination of Tear Strength of Trapezoidal Sample" test; the whiteness is tested according to GB/T8425-1987 "Instrumental Evaluation Method for Relative Whiteness of Textile Color Fastness Test".

Detailed ways:

In order to better understand the present invention, the present invention will be further elaborated below in conjunction with the examples.

Example 1

A formaldehyde-free durable non-ironing finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent (molecular weight is 500) 30.0%;

Polypolycarboxylic acid (molecular weight is 1400) 40.0%;

Amino silicone oil emulsion 8.0%;

Magnesium Chloride 10.0%;

Deionized water 12.0%,

First add magnesium chloride to deionized water, use a stirrer to stir at a speed of 80-100r/min for 10-15 minutes, add the acetal crosslinking agent in the stated proportion and continue stirring; then add polypolycarboxylic acid and amino silicone oil emulsion, Stir for 30 minutes to obtain a light-colored transparent liquid, namely the described formaldehyde-free durable no-ironing finishing agent.

Use the obtained finishing agent to do durable non-ironing finishing on pure cotton fabrics by padding process. The concentration of the working solution is 200g/L, and the fabric liquid retention rate is 80%. Pre-dry at 100°C until the fabric liquid retention rate is 4%. Bake at lower temperature for 8 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 327°, after washing 5 times, the crease recovery angle is 304°, the whiteness of the fabric after finishing is 78.2%, and the tear strength retention rate is 71.2%.

Example 2

A formaldehyde-free durable non-ironing textile finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent (molecular weight is 600) 25.0%;

Polypolycarboxylic acid (molecular weight is 1500) 42.0%;

Cationic silicone hydroxyl emulsion 9.0%;

Tartaric acid 3.0%;

Aluminum sulfate 8.0%;

Deionized water 13.0%,

First add tartaric acid and aluminum sulfate to deionized water, stir with a stirrer at a speed of 80-100r/min for 10-15 minutes, add the acetal crosslinking agent in the stated proportion and continue stirring; then add polypolycarboxylic acid and cationic The silicone hydroxyl emulsion was stirred for 30 minutes to obtain a light white transparent liquid, which is the long-lasting formaldehyde-free and easy-care finishing agent.

Use the obtained finishing agent to 65/35 polyester-cotton fabrics for durable non-ironing finishing by dipping process, the concentration of the working solution is 200g/L, centrifugal drying, the liquid retention rate is 75%, and pre-dried at 100°C to the fabric liquid retention rate 5%, bake at 145°C for 18 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 310°, after washing 5 times, the crease recovery angle is 302°, the whiteness of the fabric after finishing is 81.6%, and the tear strength retention rate is 68%.

Example 3

A formaldehyde-free durable non-ironing textile finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent (molecular weight is 700) 39.0%;

Polypolycarboxylic acid (molecular weight is 1600) 33.0%;

Epoxy polyether modified silicone oil 6.0%;

Tartaric acid 5.0%;

Aluminum sulfate 8.0%;

Deionized water 9.0%,

First add tartaric acid and aluminum sulfate to deionized water, use a stirrer to stir at a speed of 80-100r/min for 10-15 minutes, add the acetal crosslinking agent in the stated proportion and continue stirring; then add polypolycarboxylic acid and cyclic Oxygen polyether modified silicone oil was stirred for 30 minutes to obtain a light-colored transparent liquid, namely the described formaldehyde-free durable no-ironing finishing agent.

Use the obtained finishing agent to do durable non-ironing finishing on linen fabrics by padding process. The concentration of the working solution is 180g/L, and the liquid carrying rate of the fabric is 85%. Bake for 10 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 299°, after washing 5 times, the crease recovery angle is 287°, the fabric whiteness after finishing is 79.1%, and the tear strength retention rate is 69%.

Example 4

A formaldehyde-free durable non-ironing textile finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent (molecular weight is 700) 39.0%;

Polypolycarboxylic acid (molecular weight is 1600) 33.0%;

Epoxy polyether modified silicone oil 6.0%;

Tartaric acid 4.0%;

Aluminum sulfate 10.0%;

Deionized water 8.0%,

First add tartaric acid and aluminum sulfate to deionized water, use a stirrer to stir at a speed of 80-100r/min for 10-15 minutes, add the acetal crosslinking agent in the stated proportion and continue stirring; then add polypolycarboxylic acid and cyclic Oxygen polyether modified silicone oil was stirred for 30 minutes to obtain a light-colored transparent liquid, namely the described formaldehyde-free durable no-ironing finishing agent.

Use the obtained finishing agent to do durable non-ironing finishing on linen fabrics by padding process. The concentration of the working solution is 180g/L, and the liquid carrying rate of the fabric is 85%. Bake for 10 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 301°, after washing 5 times, the crease recovery angle is 288°, the whiteness of the fabric after finishing is 78.6%, and the tear strength retention rate is 70%.

Example 5

A formaldehyde-free durable non-ironing textile finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent (molecular weight is 800) 35.0%;

Polypolycarboxylic acid (molecular weight is 1200) 38.0%;

Amino polyether modified silicone oil 5.0%;

Magnesium Chloride 9.0%;

Deionized water 13.0%,

First, add magnesium chloride to deionized water, use a stirrer to stir at a speed of 80-100r/min for 10-15 minutes, add the acetal crosslinking agent in the stated proportion and continue stirring; then add polypolycarboxylic acid and amino polyether modified permanent silicone oil, and stirred for 30 minutes to obtain a light-colored transparent liquid, namely the described formaldehyde-free durable non-ironing finishing agent.

Use the finishing agent of gained to do durable non-ironing finishing to viscose fiber fabric by padding process, working solution concentration is 210g/L, and fabric carrying rate is 85%, and 100 ℃ is prebaked to fabric carrying rate to 8%, and 160 Bake at ℃ for 10 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 318°, after washing 5 times, the crease recovery angle is 302°, the fabric whiteness after finishing is 82.3%, and the tear strength retention rate is 74%.

Example 6

A formaldehyde-free durable non-ironing textile finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent (molecular weight 400) 22.0%;

Polypolycarboxylic acid (molecular weight is 1800) 50.0%;

Amino polyether modified silicone oil 7.0%;

Sodium hypophosphite 8.0%;

Deionized water 13.0%,

First add sodium hypophosphite to deionized water, use a stirrer to stir at a speed of 80-100r/min for 10-15 minutes, add the acetal cross-linking agent in the stated proportion and continue stirring; then add polypolycarboxylate and amino The polyether-modified silicone oil was stirred for 30 minutes to obtain a light-colored transparent liquid, that is, the described formaldehyde-free durable no-ironing finishing agent.

Use the obtained finishing agent to do durable non-ironing finishing on Modal fiber fabrics by padding process. The concentration of the working solution is 220g/L, and the liquid carrying rate of the fabric is 80%. Bake at lower temperature for 8 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 332°, after washing 5 times, the crease recovery angle is 310°, the whiteness of the fabric after finishing is 78.7%, and the tear strength retention rate is 75%.

Below in conjunction with proportion the present invention will be further described:

Comparative example 1

A formaldehyde-free durable non-ironing textile finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent 35.0%;

Polypolycarboxylic acid 45.0%;

Amino silicone oil emulsion 8.0%;

Catalyst 0;

Deionized water 12.0%,

First add the acetal cross-linking agent to deionized water, use a stirrer to stir at a speed of 80-100r/min for 10-15 minutes, then add polypolycarboxylic acid and amino silicone oil emulsion, and stir for 30 minutes to obtain light-colored and transparent Liquid, that is, the above-mentioned formaldehyde-free durable non-ironing finishing agent.

Use the obtained finishing agent to do durable non-ironing finishing on pure cotton fabrics by padding process. The concentration of the working solution is 200g/L, and the fabric liquid retention rate is 80%. Pre-dry at 100°C until the fabric liquid retention rate is 4%. Bake at lower temperature for 8 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 161°, after washing 5 times, the crease recovery angle is 152°, the whiteness of the fabric after finishing is 75.6%, and the tear strength retention rate is 51%.

Comparative example 2

A formaldehyde-free durable non-ironing textile finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent 33.0%;

Polypolycarboxylic acid 46.0%;

Amino silicone oil emulsion 0;

Tartaric acid 2.0%;

Aluminum sulfate 6.0%;

Deionized water 13.0%,

First add tartaric acid and aluminum sulfate to deionized water, use a stirrer to stir at 80-100r/min for 10-15 minutes, add the acetal cross-linking agent in the stated proportion and continue stirring; then add polypolycarboxylic acid, stir After 30 minutes, a light-colored transparent liquid was obtained, that is, the long-lasting non-iron finishing agent without formaldehyde.

Use the obtained finishing agent to 65/35 polyester-cotton fabrics for durable non-ironing finishing by dipping process, the concentration of the working solution is 200g/L, centrifugal drying, the liquid retention rate is 75%, and pre-dried at 100°C to the fabric liquid retention rate 5%, bake at 145°C for 18 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 276°, after washing 5 times, the crease recovery angle is 216°, the whiteness of the fabric after finishing is 77.6%, and the tear strength retention rate is 51%.

Comparative example 3

A formaldehyde-free durable non-ironing textile finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent 40.0%;

Polypolycarboxylic acid 0;

Epoxy polyether modified silicone oil 10.0%;

Magnesium chloride 15.0%;

Deionized water 35.0%,

First add magnesium chloride to deionized water, use a stirrer to stir at a speed of 80-100r/min for 10-15 minutes, add the acetal crosslinking agent in the stated proportion and continue stirring; then add epoxy polyether modified silicone oil, stir After 30 minutes, a light-colored transparent liquid was obtained, that is, the long-lasting non-iron finishing agent without formaldehyde.

Use the obtained finishing agent to do durable non-ironing finishing on linen fabrics by padding process. The concentration of the working solution is 200g/L, and the liquid carrying rate of the fabric is 85%. Bake for 10 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 231°, after washing 5 times, the crease recovery angle is 205°, the fabric whiteness after finishing is 80.3%, and the tear strength retention rate is 65%.

Comparative example 4

A formaldehyde-free durable non-ironing textile finishing agent, which consists of the following components by weight percentage:

Acetal crosslinking agent 0;

Polypolycarboxylic acid 50.0%;

Amino silicone oil emulsion 9.0%;

Sodium hypophosphite 13.0%;

Deionized water 28.0%,

First add sodium hypophosphite into deionized water, use a stirrer to stir at a speed of 80-100r/min for 10-15 minutes, add polypolycarboxylic acid and amino silicone oil emulsion, and stir for 30 minutes to obtain a light-colored transparent liquid, namely The formaldehyde-free durable non-ironing finishing agent.

Use the finishing agent of gained to do durable non-ironing finishing to viscose fiber fabric by padding process, working solution concentration is 200g/L, fabric liquid carrying rate is 85%, 100 ℃ of pre-baked to fabric carrying liquid rate is 8%, 160 Bake at ℃ for 10 minutes, and absorb moisture at room temperature for 24 hours. After testing, the crease recovery angle of the fabric is 261°, after washing 5 times, the crease recovery angle is 245°, the fabric whiteness after finishing is 58.3%, and the tear strength retention rate is 43%.

It can be seen from the above four comparative examples that when a component is lacking in the composition, its effect is affected to varying degrees.

The above-mentioned results have illustrated the effectiveness of the composition of the present invention. Of course, the above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Equivalent changes or modifications made to the structural formula or process steps are all included in the patent scope of the present invention.

Claims (7)

1. formaldehyde-free durable crease-proof finishing agent composition that is used to handle cellulose base fiber fabric, said composition is composed of the following components by weight percentage:

Acetal crosslinker 20.0%～40.0%;

Polyhydroxy polycarboxylic acid 28.0%～50.0%;

Polysiloxane 5.0%～10.0%;

Catalyst 8.0%～15.0%;

Deionized water 8.0%～16.0%,

Described cellulose fibre comprises cotton fiber, flax fibre, bamboo pulp fiber, Lyocell, viscose, Modal fiber, tencel fiber; Described acetal crosslinker be polyethylene glycol and glyoxal condensation product; Described polyhydroxy polycarboxylic acid is maleic acid, itaconic acid and polymerizing acrylic acid thing; Polysiloxane is the polysiloxane of response type; Catalyst is any two kinds composition in a kind of or above-mentioned substance in magnesium chloride, citric acid, tartaric acid, aluminum sulfate, boric acid, ammonium chloride, the sodium hypophosphite.

Described acetal crosslinker is a reactive material for being dissolved in the water with polyethylene glycol and glyoxal, and sulfamic acid is a catalyst, obtains in 4～8 hours 50～85 ℃ of reactions; The molecular weight of product is 400～800; Solid content is 60%, and pH value is 5.5～6.5, and outward appearance is a light-coloured transparent liquid.

Said polysiloxane is a kind of in amido silicone oil microemulsion, CATION organosilicon hydroxyl latex emulsion, amino-polyether modified silicone oil, the epoxidized polyether modified silicon oil.

2. a kind of formaldehyde-free durable crease-proof finishing agent composition that is used to handle cellulose base fiber fabric according to claim 1 is characterized in that described polyhydroxy polycarboxylic acid is a reactive material for being dissolved in the water with maleic acid, itaconic acid and acrylic acid, and iron ammonium sulfate is an activator; Hydrogen peroxide solution is a catalyst; Obtained in 3～6 hours 80～100 ℃ of reactions, the molecular weight of product is 1200～1800, and solid content is 60%; PH value is 3.5～4.5, and outward appearance is a yellow transparent liquid.

3. a kind of formaldehyde-free durable crease-proof finishing agent composition that is used to handle cellulose base fiber fabric according to claim 1; It is characterized in that said amido silicone oil microemulsion is 0.4～0.6mgHCL/g for the ammonia value; The molecular weight that gathers amino silane is 3000～5000, and effective content is at 60% liquid; CATION organosilicon hydroxyl latex emulsion be effective content 60%, hydroxyl value is 0.2～0.5, molecular weight is at 500000～800000 organic silicon emulsion; Amino-polyether modified silicone oil be the ammonia value at 0.1～0.4mgHCL/g, the mass ratio of polyethers and siloxanes was at 1: 1～1: 4 waterborne liquid; The epoxidized polyether modified silicon oil be epoxide number 0.05～0.2, the mass ratio of polyethers and siloxanes was at 1: 1～1: 3 golden yellow liquid.

4. a kind of formaldehyde-free durable crease-proof finishing agent composition that is used to handle cellulose base fiber fabric according to claim 1 is characterized in that described catalyst is a kind of in mixture, magnesium chloride or the sodium hypophosphite of tartaric acid and aluminum sulfate.

5. according to claim 1 or 4 described a kind of formaldehyde-free durable crease-proof finishing agent compositions that are used to handle cellulose base fiber fabric, it consists of the mass ratio 2: 8～4: 6 of tartaric acid and aluminum sulfate to it is characterized in that described tartaric acid and aluminum sulfate mixture.

6. the preparation method of the formaldehyde-free durable crease-proof finishing agent of a cellulose base fiber fabric; It is characterized in that: prescription according to claim 1; Catalyst with said ratio joins in the deionized water earlier; Use agitator under 80～100r/min rotating speed, to stir 10～15 minutes, the acetal crosslinker that adds said ratio continues to stir; Add polyhydroxy polycarboxylic acid and polysiloxane then, stirred 30 minutes, it is translucent to transparency liquid to make light color, promptly described formaldehyde-free durable crease-proof finishing agent.

7. the formaldehyde-free durable crease-proof finishing method of a cellulose base fiber fabric is characterized in that this method for sorting uses the described formaldehyde-free durable crease-proof finishing agent of claim 1, and employing is padded or dip finishing technology is carried out noniron finish to fabric; Technological parameter is: the fabric liquid carrying rate is that 75%～85%, 95～100 ℃ of preliminary drying to fabric liquid carrying rates are to bake 8～10 minutes under 4%～8%, 140～165 ℃, normal temperature moisture equilibrium at dry side 24 hours.