CN113322696A - Dyeing process of recycled high-density nylon cool fabric - Google Patents
Dyeing process of recycled high-density nylon cool fabric Download PDFInfo
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- CN113322696A CN113322696A CN202110659729.XA CN202110659729A CN113322696A CN 113322696 A CN113322696 A CN 113322696A CN 202110659729 A CN202110659729 A CN 202110659729A CN 113322696 A CN113322696 A CN 113322696A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/39—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using acid dyes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/24—Polyamides; Polyurethanes
- D06P3/241—Polyamides; Polyurethanes using acid dyes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention discloses a dyeing process of a circularly regenerated high-density nylon cool fabric, which comprises a coloring stage and a moisture absorption and sweat releasing finishing stage; the coloring agent adopted in the coloring stage comprises a dyeing auxiliary agent and a dye; after the coloring stage is finished, draining liquid, and then adding a moisture absorption and sweat releasing finishing agent for moisture absorption and sweat releasing finishing; the dyeing auxiliary agent comprises an acid leveling agent, a polyamide fiber dyeing accelerant, a pH slipping agent, ultraviolet-resistant Raoshan C and ultraviolet-resistant DEL; moisture wicking finishing agents include moisture wicking and slip agents VS. Aiming at the characteristics of the circularly regenerated high-density nylon fabric, the reasonable dyeing process curve is designed by adopting proper dyeing auxiliaries, dyes and moisture-absorbing and sweat-releasing finishing agents, so that the color brightness, color fastness and hand feeling of the fabric after dyeing are improved, and the fabric is endowed with a better anti-ultraviolet effect and moisture-absorbing and sweat-releasing effect.
Description
Technical Field
The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a dyeing process of a recyclable high-density nylon cool fabric.
Background
With followingThe living standard is continuously improved, the functional requirements of people on the garment fabric are higher and higher, and the garment fabric is required to be comfortable to wear, and has the texture of tender skin and meat and no bone when contacting with the skin besides the normal taking requirements. Therefore, in recent years, textile fabrics have developed trends of light and thin structure, moist style and functional use. In order to resist hot summer, a 'cool skin coat' as thin as cicada wings and light as catkin is also produced. The cool skin clothes adopt regenerated high-density nylon fabric (with the function of ultraviolet resistance and the mass per square meter of single-layer fabric is not more than 42 g/m)2The textile fabric) has even, dense, uneven and wrinkled feeling on the cloth surface, is not easy to be close to the skin when being worn, and is cool and comfortable. Meanwhile, the cool skin clothes have the functions of sun protection, moisture absorption, sweat releasing, moisture permeability, ventilation, softness, thinness, coolness and the like, so that people can enjoy the nature and easily respond to climate change, have a special luster style, are fresh and elegant, are comprehensive functional fabrics integrating various characteristics, and meet the consumption desire and personalized pursuit of modern people.
The ultrathin high-density regenerated nylon fabric is formed by interweaving regenerated 20D/24F nylon filaments and low stretch yarns, and the warp and weft density reaches 400T-450T; the regenerated nylon products are rarely used in the market at present, and the weaving production and dyeing and finishing processing technology of the regenerated superfine denier nylon products is still not mature, so that great production difficulty exists.
Although the regenerated high-density nylon fabric has a plurality of advantages, due to different production methods, the titer, the cross-sectional shape and the molecular structure of the fiber are different, so that the pretreatment, dyeing and after-treatment have certain differences. For the dyeing process, the regenerated nylon fiber has very small fiber radius and an irregular structure, the linear density of the fiber is low, the specific surface area is large, and the adsorption speed to acid dye is high, so that the problems of color bloom, uneven dyeing and the like easily occur to the nylon fabric in dyeing; therefore, how to improve the dyeing process of the high-density regenerated nylon fabric plays an important role in the quality of products. Therefore, the research and development of the dyeing processing technology of the regenerated high-density nylon fabric are very necessary, so that the indexes of color brightness, color fastness, hand feeling, ultraviolet resistance, moisture absorption, sweat releasing and the like of the dyed fabric are improved by reasonably controlling the dyeing process of the regenerated high-density nylon fabric, the application of the regenerated high-density nylon fabric is expanded, and the requirements of customers are better met.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a dyeing process for a recyclable high-density nylon cool fabric. According to the dyeing process, reasonable dyeing auxiliaries, dyes, moisture absorption and sweat releasing finishing agents and reasonable dyeing process curves are adopted according to the characteristics of the fabric, so that the color brightness, color fastness and hand feeling of the fabric after dyeing are improved, and the fabric is endowed with better anti-ultraviolet effect, moisture absorption and sweat releasing effect, so that the fabric has the new characteristics of softness, ultra-thinness, bright color, fashion light sensation and the like.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme: a dyeing process of a circularly regenerated high-density nylon cool fabric comprises a coloring stage and a moisture absorption and sweat releasing finishing stage; the coloring agent adopted in the coloring stage comprises a dyeing auxiliary agent and a dye; after the coloring stage is finished, draining liquid, and then adding a moisture absorption and sweat releasing finishing agent for moisture absorption and sweat releasing finishing; the dyeing auxiliary agent comprises an acidic leveling agent TF-217B, a polyamide fiber dyeing accelerant TANEEDE EXA, a pH slipping agent, an ultraviolet-resistant Raoshan C and an ultraviolet-resistant DEL; the moisture absorbing and sweat releasing finishing agent comprises a moisture absorbing and sweat releasing agent FERAN ASR-C and a slipping agent VS.
Further, the dye is an acid dye, and the acid dye comprises acid navy blue M-R, acid yellow M-2R and acid soy red M-B.
Further, the formula of the coloring agent of the dyeing process is as follows:
further, the formula of the moisture-absorbing and sweat-releasing finishing agent is as follows:
the moisture and sweat absorbing agent FERAN ASR-C2 g/L,
slip agent VS 0.6 g/L.
Further, the dyeing process comprises the following steps: firstly, a coloring stage, namely, when the temperature of a dye vat of a dyeing machine reaches 40 ℃, sequentially injecting a dyeing auxiliary agent and dye, then heating the temperature of the dye vat to 50 ℃ at a heating rate of 0.5 ℃/min, preserving heat for 15min, heating to 60 ℃ at a heating rate of 0.5 ℃/min, preserving heat for 15min, heating to 70 ℃ at a heating rate of 0.5 ℃/min, preserving heat for 10min, heating to 85 ℃ at a heating rate of 1 ℃/min, preserving heat for 50min, then cooling to 40 ℃ at a cooling rate of 2 ℃/min, and discharging liquid; then, the process enters a moisture absorption and sweat releasing finishing stage, a moisture absorption and sweat releasing finishing agent is added, the temperature of the dye vat is increased to 70 ℃ at the temperature increasing speed of 1.5 ℃/min, the temperature is kept for 20min, the temperature is reduced to 55 ℃ at the temperature decreasing speed of 2 ℃/min, and liquid is discharged.
Further, the dyeing pH in the dyeing process is 4-4.5.
Compared with the prior art, the invention has the following advantages and effects:
the dyeing process adopts the polyamide fiber dyeing accelerant, changes the dyeing temperature limit of polyamide at 95-100 ℃, reduces the dyeing temperature by 10-15 ℃, obviously improves the dyeing rate and the deep dyeing property of acid dye, improves the color fastness to washing and the color fastness to perspiration of the dyed fabric to a certain extent, and can achieve the effects of energy conservation and emission reduction while improving the product quality;
the leveling agent in the dyeing process is an anionic leveling agent, has affinity to the chinlon, and can block the interaction of a dyeing group and-NH-, -COOH and the like in nylon molecules, so that the dyeing rate of the chinlon is delayed, the effect of reducing chromatic aberration is achieved, the initial dyeing speed of the dye is reduced, and the leveling effect is achieved;
the invention carries out the uvioresistant finishing on the fabric, and the uvioresistant finishing is carried out in the dyeing stage instead of the post-finishing stage, so that the uvioresistant finishing agent and the dye are colored in the same bath, the color difference is small, the color light is not influenced, the fabric has good absorption effect on the uvioresistant Raoshan C and the uvioresistant DEL, the uvioresistant finishing effect is good, the sun-proof characteristic of the fabric is improved, and the influence on the product quality caused by the reaction of the uvioresistant Raoshan C and the uvioresistant DEL with other cationic finishing agents in the post-finishing process in the same bath can be avoided;
the invention also carries out moisture absorption and sweat releasing finishing in the dyeing process; after the coloring is finished, the fabric is subjected to moisture absorption and sweat releasing finishing, the moisture absorption and sweat releasing finishing agent can better enter the fabric, and the reaction with other finishing agents in the post-finishing process in one bath can be avoided, so that the moisture absorption and sweat releasing finishing effect is better. The moisture and sweat absorbing and discharging agent FERAN ASR-C not only can endow the fabric with better moisture absorbing and sweat discharging functions, but also can enable the fabric to have better antistatic performance and easy decontamination effect, and an antistatic agent is not required to be added in the post-finishing process.
Drawings
Fig. 1 is a dyeing temperature process curve in the dyeing process of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Examples
Fabric grey cloth: the recycled and regenerated high-density nylon fabric is formed by interweaving regenerated 20D/24F nylon filaments and low stretch yarns.
The regenerated nylon used by the fabric is derived from waste nylon silk screens, carpets and the like, and is prepared by carrying out regeneration granulation slicing and spinning through depolymerization and repolymerization processes.
The fabric grey cloth enters a dyeing process stage after a pretreatment process.
The dyeing process of the circularly regenerated high-density nylon cool fabric comprises a coloring stage and a moisture absorption and sweat releasing finishing stage; the coloring agent adopted in the coloring stage comprises a dyeing auxiliary agent and an acid dye; after the coloring stage is finished, draining liquid, and then adding a moisture absorption and sweat releasing finishing agent for moisture absorption and sweat releasing finishing; the dyeing auxiliary agent comprises an acidic leveling agent TF-217B, a polyamide fiber dyeing accelerant TANEEDE EXA, a pH slipping agent, an ultraviolet-resistant Raoshan C and an ultraviolet-resistant DEL; the moisture absorbing and sweat releasing finishing agent comprises a moisture absorbing and sweat releasing agent FERAN ASR-C and a slipping agent VS.
The formula of the coloring agent of the dyeing process is as follows:
wherein g/L represents the mass of the substance in grams in 1L of the dye liquor. The 1L dye solution is prepared by using the dyeing auxiliary agent and the dye according to the prescription amount and adding water to a constant volume of 1L.
The formula of the moisture absorption and sweat releasing finishing agent is as follows:
the moisture and sweat absorbing agent FERAN ASR-C2 g/L,
the slipping agent VS is 0.6 g/L;
wherein g/L represents the gram number of the mass of the substances contained in 1L of moisture absorption and sweat releasing finishing liquid. Specifically, 1L of moisture absorption and sweat releasing finishing liquid is prepared by adding water to a constant volume of 1L by using 2g of moisture absorption and sweat releasing agent FERAN ASR-C and 0.6g of slipping agent VS.
As shown in fig. 1, the dyeing process specifically comprises the following steps: firstly, a coloring stage, namely, when the temperature of a dye vat of a dyeing machine reaches 40 ℃, sequentially injecting a dyeing auxiliary agent and an acid dye, then heating the temperature of the dye vat to 50 ℃ at a heating rate of 0.5 ℃/min, preserving heat for 15min, heating to 60 ℃ at a heating rate of 0.5 ℃/min, preserving heat for 15min, heating to 70 ℃ at a heating rate of 0.5 ℃/min, preserving heat for 10min, heating to 85 ℃ at a heating rate of 1 ℃/min, preserving heat for 50min, then cooling to 40 ℃ at a cooling rate of 2 ℃/min, and discharging liquor; then, the process enters a moisture absorption and sweat releasing finishing stage, a moisture absorption and sweat releasing finishing agent is added, the temperature of the dye vat is increased to 70 ℃ at the temperature increasing speed of 1.5 ℃/min, the temperature is kept for 20min, the temperature is reduced to 55 ℃ at the temperature decreasing speed of 2 ℃/min, and liquid is discharged.
In the dyeing process, the control of the heating rate is also very critical to the dyeing of the superfine nylon fabric; the temperature rise rate is too fast, the movement diffusion capacity of dye molecules is rapidly increased, the more active the dye molecules are, the faster the dyeing rate is, the more easily the dyeing flowers and the color difference are generated; the heating rate is too slow, and the dye molecules fully react with amino groups on the surface of the polyamide, so that the continuous dyeing capability is poor, and the color of the fabric is lighter. Moreover, due to the characteristics of large specific surface area, high dye uptake and the like of the superfine nylon fabric, the final dyeing temperature needs to be strictly controlled. The phenomenon of dyeing flowers is easy to occur due to overhigh temperature; the temperature is too low, dye molecules are not easy to penetrate into the fiber, and the phenomena of light color and fading occur. In addition, because the affinity of the acid dye to the chinlon is high, the initial dyeing amount of the chinlon is high, and uneven dyeing is easily caused, so the chinlon is colored at a low temperature which is generally not more than 40 ℃, and the temperature rise speed needs to be controlled within 0.5 ℃/min; the nylon dyeing accelerant added in the dyeing process can form a co-bond conjugate with hydroxyl, azo group or sulfonic group and the like, can increase the permeability and the migration performance of the dye on fiber, greatly reduces the dyeing temperature while ensuring that the dye has good permeability and migration performance on the fiber, ensures that the final dyeing temperature is 85 ℃, lowers by 15 ℃ compared with the normal dyeing temperature, and continues dyeing for 50 min. The dyeing process can improve the acidity, the felting property and the solubility of the metal gold-containing dye, reduce the dyeing temperature, improve the exhaustion rate, improve the productivity and reduce the production cost, and has the advantages of energy conservation, consumption reduction, time conservation, emission reduction and the like.
The anionic leveling agent adopted by the dyeing process has affinity to the chinlon, and has the function of preventing interaction of a dyeing group and-NH-, -COOH and the like in nylon molecules, so that the dyeing rate of the chinlon is delayed, the effect of reducing chromatic aberration is achieved, the initial dyeing speed of the dye is reduced, and the leveling effect can be achieved.
The acid dyes adopted in the dyeing process comprise acid navy blue M-R, acid yellow M-2R and acid soy sauce red M-B; under the action of the nylon fiber dyeing accelerant, the three acid dyes have similar dyeing curves, similar initial dyeing temperatures and similar sensitivities to temperature and a heat stabilizer, so that competitive dyeing can be avoided.
In the dyeing process, the uvioresistant absorbent and the acid dye are dyed in the same bath, the color difference is small, the color light is not influenced, the fabric has good uvioresistant Raoshan C and uvioresistant DEL absorption effect, the uvioresistant finishing effect is obvious, the fabric quality can be improved, the fabric meets the standard requirement of outdoor sun-proof skin clothes, and the influence of the reaction of anionic uvioresistant Raoshan C and uvioresistant DEL and a cooling finishing agent (containing a cationic auxiliary agent) in the after-finishing process in the same bath on the product quality can be avoided.
The pH value of the dye liquor also has obvious influence on the dyeing process and the dyeing effect, namely, when the pH value of the dye liquor is high, the dye is difficult to dye; as the pH value decreases, the dye begins to dye and quickly reaches saturation; along with the further reduction of the pH value, the molecular structure on the surface of the nylon fabric is damaged, and partial hydrolysis is started, so that the density of the carboxyl end group and the amino end group is increased, the speed of dye molecule adsorption is rapidly increased, the fabric is subjected to super-equivalent dye molecule adsorption, and uneven dyeing is easily caused. In the dyeing process, the pH slipping agent has a buffering effect; in the initial dyeing stage, the pH is about 7; the pH value of the dye liquor is gradually reduced along with the rise of the temperature, and is finally kept constant at about 4-4.5 under the action of the pH slipping agent, so that the dye-uptake rate of the dye can be controlled, the uniform dyeing is facilitated, and the problem of uneven dyeing caused by the further reduction of the pH value is prevented.
In the stage of moisture absorption and sweat releasing finishing, the moisture absorption and sweat releasing agent FERAN ASR-C not only can endow the fabric with better moisture absorption and sweat releasing functions, but also can endow the fabric with better antistatic performance and easy decontamination effect.
Examples of effects
After the circularly regenerated high-density nylon cool fabric treated by the dyeing process is subjected to setting treatment, the dyeing performance of the fabric is tested; the results are shown in Table 1.
Table 1 dyeing property test results of recycled high density nylon cool and refreshing fabric
Carrying out ultraviolet resistance test on the circularly regenerated high-density nylon cool fabric treated by the dyeing process; the results are shown in Table 2.
Table 2 ultraviolet resistance test results of the regenerated high density nylon cool and refreshing fabric
| Item | Standard of merit | The result of the detection |
| Ultraviolet protection factor UPF> | 40 | >50 |
| UV UVA transmittance T (UVA) AV/%< | 5 | 2.19 |
In GB/T18830-2009, a sample may be referred to as a "UV-protection product" when its UV protection factor UPF is >40 and the UV UVA transmittance T (UVA) AV < 5%. According to the detection result, the recycled high-density nylon cool fabric has good ultraviolet resistance.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A dyeing process of a cyclically-regenerated high-density nylon cool fabric is characterized by comprising the following steps of: the dyeing process comprises a coloring stage and a moisture absorption and sweat releasing finishing stage; the coloring agent adopted in the coloring stage comprises a dyeing auxiliary agent and a dye; after the coloring stage is finished, draining liquid, and then adding a moisture absorption and sweat releasing finishing agent for moisture absorption and sweat releasing finishing; the dyeing auxiliary agent comprises an acidic leveling agent TF-217B, a polyamide fiber dyeing accelerant TANEEDE EXA, a pH slipping agent, an ultraviolet-resistant Raoshan C and an ultraviolet-resistant DEL; the moisture absorbing and sweat releasing finishing agent comprises a moisture absorbing and sweat releasing agent FERAN ASR-C and a slipping agent VS.
2. The dyeing process of the circularly regenerated high-density nylon cool and refreshing fabric according to claim 1, which is characterized in that: the dye is an acid dye, and the acid dye comprises acid navy blue M-R, acid yellow M-2R and acid soy red M-B.
3. The dyeing process of the circularly regenerated high-density nylon cool and refreshing fabric according to claim 2, characterized in that: the formula of the coloring agent of the dyeing process is as follows:
4. the dyeing process of the circularly regenerated high-density nylon cool and refreshing fabric according to claim 1, which is characterized in that: the formula of the moisture absorption and sweat releasing finishing agent is as follows:
the moisture and sweat absorbing agent FERAN ASR-C2 g/L,
slip agent VS 0.6 g/L.
5. The dyeing process of the circularly regenerated high-density nylon cool and refreshing fabric according to claim 1, which is characterized in that: the dyeing process comprises the following steps: firstly, a coloring stage, namely, when the temperature of a dye vat of a dyeing machine reaches 40 ℃, sequentially injecting a dyeing auxiliary agent and dye, then heating the temperature of the dye vat to 50 ℃ at a heating rate of 0.5 ℃/min, preserving heat for 15min, heating to 60 ℃ at a heating rate of 0.5 ℃/min, preserving heat for 15min, heating to 70 ℃ at a heating rate of 0.5 ℃/min, preserving heat for 10min, heating to 85 ℃ at a heating rate of 1 ℃/min, preserving heat for 50min, then cooling to 40 ℃ at a cooling rate of 2 ℃/min, and discharging liquid; then, the process enters a moisture absorption and sweat releasing finishing stage, a moisture absorption and sweat releasing finishing agent is added, the temperature of the dye vat is increased to 70 ℃ at the temperature increasing speed of 1.5 ℃/min, the temperature is kept for 20min, the temperature is reduced to 55 ℃ at the temperature decreasing speed of 2 ℃/min, and liquid is discharged.
6. The dyeing and finishing processing technology of the recycled high-density nylon cooling fabric according to claim 1, characterized in that: the dyeing pH in the dyeing process is 4-4.5.
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|---|---|---|---|---|
| WO2022262426A1 (en) * | 2021-06-15 | 2022-12-22 | 盛虹集团有限公司 | Process for dyeing and finishing recycled and regenerated high-density cool chinlon fabric |
| CN115821605A (en) * | 2022-09-08 | 2023-03-21 | 福建省宏港纺织科技有限公司 | Dyeing process of nylon knitted fabric |
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