CN113005772A - Function maintenance agent for natural color cotton product and application thereof - Google Patents

Function maintenance agent for natural color cotton product and application thereof Download PDF

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CN113005772A
CN113005772A CN202110194690.9A CN202110194690A CN113005772A CN 113005772 A CN113005772 A CN 113005772A CN 202110194690 A CN202110194690 A CN 202110194690A CN 113005772 A CN113005772 A CN 113005772A
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agent
maintenance agent
natural colored
colored cotton
organic antioxidant
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马明波
周文龙
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Zhejiang University of Technology ZJUT
Zhejiang Sci Tech University ZSTU
Zhejiang University of Science and Technology ZUST
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Zhejiang University of Technology ZJUT
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    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D06M13/228—Cyclic esters, e.g. lactones
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    • D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
    • D06M11/30—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with oxides of halogens, oxyacids of halogens or their salts, e.g. with perchlorates
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    • D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
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    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
    • D06M11/57—Sulfates or thiosulfates of elements of Groups 3 or 13 of the Periodic Table, e.g. alums
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    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
    • D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts
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    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/144—Alcohols; Metal alcoholates
    • D06M13/148—Polyalcohols, e.g. glycerol or glucose
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    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
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    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02—Natural fibres, other than mineral fibres
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    • D06M2101/06—Vegetal fibres cellulosic

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Abstract

The invention belongs to the field of daily use and maintenance of natural colored cotton products, and particularly relates to a maintenance method for improving the durability of the antibacterial performance of natural colored cotton. The function maintenance agent of the invention consists of organic antioxidant, inorganic reducing agent, additive and wet medium. The natural color cotton function maintenance agent takes a compound of an organic antioxidant and an inorganic reducing agent as a main component; when natural colored cotton products are treated, the synergistic effect of the organic antioxidant and the inorganic reducing agent can reduce the oxidized antibacterial components of the natural colored cotton after long-time use into polyphenol to form polyphenol substances with high antibacterial activity.

Description

Function maintenance agent for natural color cotton product and application thereof
Technical Field
The invention belongs to the field of daily use and maintenance of natural colored cotton products, and particularly relates to a maintenance method for improving the durability of the antibacterial performance of natural colored cotton.
Background
The natural color cotton product does not need bleaching and dyeing processing, has excellent antibacterial and antioxidant performance, is the only variety with high antibacterial activity in textile raw materials, and therefore, not only has remarkable environmental protection and economic advantages, but also has great development value as a functional textile material. Antibacterial textiles are generally obtained by blending, grafting and coating organic or inorganic antibacterial agents, and have various defects due to safety and durability problems. The natural color cotton product has natural and safe antibacterial performance, and is suitable for being used as safe and comfortable underwear and infant products.
Natural products have problems of more or less poor stability in terms of structure and biological activity. The polyphenol antibacterial substances of natural colored cotton are no exception, and the polyphenol structure of the natural colored cotton is oxidized under the conditions of illumination, acid and alkali, oxidizing agent and long-time air contact, so that the antibacterial performance of the natural colored cotton is greatly reduced. For example, the antibacterial property of natural colored cotton is decreased as the number of washing times increases, and the antibacterial activity of the antibacterial active ingredient is weakened as the light is irradiated.
Therefore, it is necessary to develop a function maintenance agent to partially reduce the polyphenol structure damaged by oxidation, so as to recover the antibacterial performance of the natural colored cotton.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method and an application method of a natural colored cotton antibacterial product function maintenance agent.
In order to solve the technical problems, the invention provides a function maintenance agent for natural colored cotton products, which consists of an organic antioxidant, an inorganic reducing agent, an additive and a wet medium (the wet medium can be accepted by household textile washing care);
the sum of the weight of the organic antioxidant and the inorganic reducing agent accounts for 0.02 to 7 percent of the total weight of the functional maintenance agent;
the weight ratio of the organic antioxidant to the inorganic reducing agent is 1: 20-100: 1;
the additive accounts for 0.1 to 0.5 percent of the total weight of the functional maintenance agent;
the balance being the wet medium.
As an improvement of the inventive function maintaining agent for natural colored cotton products:
the organic antioxidant is at least one (one or more) of ascorbic acid (vitamin C), resveratrol, coenzyme Q10 and superoxide dismutase (Mn-SOD);
the inorganic reducing agent is at least one (one or more) of sodium hypochlorite, sodium hypophosphite and sodium sulfite.
As a further improvement of the inventive functional maintainer for natural colored cotton products:
the organic antioxidant accounts for 0.01-5% of the total weight of the functional maintenance agent;
the inorganic reducing agent accounts for 0.01-2% of the total weight of the functional maintenance agent.
As a further improvement of the inventive functional maintainer for natural colored cotton products:
the organic antioxidant accounts for 0.03-3.83% of the total weight of the functional maintenance agent;
the inorganic reducing agent accounts for 0.04-1.85% of the total weight of the functional maintenance agent;
the weight ratio of the organic antioxidant to the inorganic reducing agent is 0.06-10: 1.
As a further improvement of the inventive functional maintainer for natural colored cotton products:
the additive is alum and aluminum sulfate;
the wet medium is water or a wash water bath consisting of detergent (household detergent) and water.
The detergent is, for example, a laundry detergent, a washing powder, a soap, etc.
As a further improvement of the inventive functional maintainer for natural colored cotton products:
the function maintenance agent consists of 0.8 percent of ascorbic acid, 0.1 percent of coenzyme Q10, 0.2 percent of sodium hypophosphite, 0.05 percent of sodium sulfite, 0.5 percent of alum and water as the rest; the above% is by weight%.
The invention also provides a use method of the function maintenance agent, which comprises the following steps: and (3) soaking the natural colored cotton in a function maintenance agent, and then performing post-treatment.
As an improvement of the method of use of the functional maintenance agent of the present invention:
when the wet medium is water, the post-treatment comprises rinsing, spin-drying and room-temperature air-drying in sequence;
when the wet medium is washing water bath, the post-treatment comprises washing, spin-drying, rinsing, spin-drying and room-temperature air drying in sequence.
The invention is based on the discovery of the inventor in the previous period, and utilizes the structure of some antibacterial active ingredients of natural colored cotton to have the reversible property of oxidation-reduction, repairs the structure of the antibacterial active ingredients of the natural colored cotton by using a corresponding and proper preparation combination, and then stabilizes the antibacterial active ingredients by using a specific method, so that the antibacterial performance of the textile is recovered and durably stabilized.
The natural color cotton function maintenance agent takes a compound of an organic antioxidant and an inorganic reducing agent as a main component; when natural colored cotton products are treated, the synergistic effect of the organic antioxidant and the inorganic reducing agent can reduce the oxidized natural colored cotton antibacterial components used/placed for a long time into polyphenol to form polyphenol substances with high antibacterial activity. In the domestic process of natural colored cotton products, the method is repeatedly used, and the high antibacterial performance of the natural colored cotton products can be maintained. The method is simple and convenient, is easy to carry out during the washing and the protection of household clothes, and has low cost. The used chemical agent does not influence the ecological environment-friendly property of the natural colored cotton product and the color of the natural colored cotton; has obvious application value.
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The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows the antibacterial effect of the functional maintenance agent of embodiment 1 of the present invention applied to natural colored cotton.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto:
the natural colored cotton used in the following cases is old natural colored cotton cloth (the content of the natural colored cotton is 100%, and the natural colored cotton is stored indoors for 10 years).
The superoxide dismutase used in the following cases was Mn-SOD.
Example 1, a performance maintainer for natural colored cotton products consisting of 0.8% ascorbic acid and 0.1% coenzyme Q10 (organic antioxidant), 0.2% sodium hypophosphite and 0.05% sodium sulfite (inorganic reducing agent), 0.5% alum (additive), water (wet medium) as the balance;
the above% is by weight%.
The function maintenance agent is applied to natural colored cotton according to the following method: taking the natural color cotton function maintenance agent, immersing the natural color cotton into the function maintenance agent according to the bath ratio of 1:40, and standing overnight (about 10h) at room temperature.
After the soaking treatment, the natural colored cotton is rinsed for 5min by a household washing machine (40L of tap water without any detergent), dried by spin drying, and then dried at room temperature (the conventional drying at room temperature generally has the water content of less than 11%).
Example 2, a function-maintaining agent for natural colored cotton product, consisting of 0.03% of coenzyme Q10 (as organic antioxidant), 0.5% of sodium hypochlorite (inorganic reducing agent), 0.5% of aluminum sulfate (additive), as the balance water (wet medium);
the above% is by weight%.
The function maintenance agent is applied to natural colored cotton according to the following method: taking the natural color cotton function maintenance agent, immersing the natural color cotton into the function maintenance agent according to the bath ratio of 1:40, and standing overnight (about 10h) at room temperature.
After the soaking treatment, the natural colored cotton is rinsed for 5min by a household washing machine (40L of tap water without any detergent), dried by spin-drying, and then dried at room temperature.
Example 3, a function-maintaining agent for natural colored cotton products, consisting of 0.42% superoxide dismutase (as organic antioxidant), 0.042% sodium hypophosphite (inorganic reducing agent), 0.1% aluminum sulfate (additive), as balance laundry bath (wet medium); the washing bath consists of conventional laundry detergent/washing powder/soap and water, and the dosage ratio of the laundry detergent/washing powder/soap to the water is configured according to the product specification of the laundry detergent/washing powder/soap.
The above% is by weight%.
The function maintenance agent is applied to natural colored cotton according to the following method: adding the natural colored cotton function maintenance agent into the washing water bath containing the detergent, immersing the natural colored cotton into the water bath according to the bath ratio of 1:30, and washing the natural colored cotton according to the conventional machine washing procedure, namely soaking at normal temperature for 10min → machine washing for 8min → dewatering (spin-drying) for 5min → rinsing for 5min → dewatering (spin-drying) for 5 min. And then dried at room temperature.
Example 4 a performance maintainer for natural colored cotton products consisting of 3.8% resveratrol (organic antioxidant), 1.8% sodium sulfite (inorganic reducing agent), 0.3% alum (additive), the balance being laundry bath (wet media); the washing bath consists of conventional laundry detergent/washing powder/soap and water, and the dosage ratio of the laundry detergent/washing powder/soap to the water is configured according to the product specification of the laundry detergent/washing powder/soap.
The above% is by weight%.
The function maintenance agent is applied to natural colored cotton according to the following method: adding the natural colored cotton function maintenance agent into the washing water bath containing the detergent, immersing the natural colored cotton into the water bath according to the bath ratio of 1:30, and washing the natural colored cotton according to the conventional machine washing procedure, namely soaking at normal temperature for 10min → machine washing for 8min → dewatering for 5min → rinsing for 5min → dewatering for 5 min. And then dried at room temperature.
Example 5 a function-maintaining agent for natural colored cotton product consisting of 0.03% of coenzyme Q10 and 3.8% of resveratrol (organic antioxidant), 0.5% of sodium hypochlorite (inorganic reducing agent), 0.5% of aluminum sulfate (additive), as the rest water (wet medium);
the above% is by weight%.
The function maintenance agent is applied to natural colored cotton according to the following method: and (3) taking the natural colored cotton function maintenance agent, preparing and diluting the natural colored cotton function maintenance agent to the concentration, immersing the natural colored cotton into the function maintenance agent according to the bath ratio of 1:40, and standing overnight (about 10 hours) at room temperature.
After the soaking treatment, the natural colored cotton is rinsed for 5min by a household washing machine (40L of tap water without any detergent), dried by spin-drying, and then dried at room temperature.
Example 6 a performance maintainer for natural color cotton products consisting of 3.8% resveratrol (as organic antioxidant), 1.8% sodium sulfite and 0.042% sodium hypophosphite (inorganic reducing agent), 0.3% alum (additive), as the balance of the laundry bath (wet media); the washing bath consists of conventional laundry detergent/washing powder/soap and water, and the dosage ratio of the laundry detergent/washing powder/soap to the water is configured according to the product specification of the laundry detergent/washing powder/soap.
The above% is by weight%.
The function maintenance agent is applied to natural colored cotton according to the following method: adding the natural colored cotton function maintenance agent into the washing water bath containing the detergent, immersing the natural colored cotton into the water bath according to the bath ratio of 1:30, and washing the natural colored cotton according to the conventional machine washing procedure, namely soaking at normal temperature for 10min → machine washing for 8min → dewatering for 5min → rinsing for 5min → dewatering for 5 min. And then dried at room temperature.
Experiment: the natural colored cotton is applied according to the above examples 1 to 6, and according to the national textile antibacterial performance test method GB/T20944.2-2007 evaluation of textile antibacterial performance, part 2: absorption method "to evaluate the antibacterial properties of natural colored cotton before and after treatment. The results are shown in Table 1.
TABLE 1 antimicrobial ratio of natural colored cotton before and after application of examples 1 to 6 of the present invention
Figure BDA0002946109980000051
The function maintenance agent is applied to the natural colored cotton, so that the bacteriostatic effect of the natural colored cotton on staphylococcus aureus and klebsiella pneumoniae is obviously improved, and particularly the bacteriostatic effect on staphylococcus aureus is improved. Among them, the lifting effect of example 1 was the most significant (as shown in table 1 and fig. 1). The method has obvious effect of improving the antibacterial performance of the natural colored cotton, and has no obvious influence on the color of the natural colored cotton.
Comparative example 1-1, with respect to example 1, no organic antioxidant was added, that is, the content of organic antioxidant (ascorbic acid, coenzyme Q10) was 0, and the remainder was the same as example 1.
Comparative examples 1-2, with respect to example 1, no inorganic reducing agent was added, i.e., the content of inorganic reducing agent (sodium hypophosphite, sodium sulfite) was 0, and the rest was identical to example 1.
Comparative examples 1-3, with respect to example 1, the additive was eliminated, i.e. the use of 0.5% of alum was eliminated, the rest being identical to example 1.
Comparative examples 1-4, relative to example 1, the organic antioxidant consisted entirely of ascorbic acid, the amount of organic antioxidant remaining unchanged, i.e. containing 0.9% of ascorbic acid; the rest is equivalent to embodiment 1.
Comparative examples 1-5, relative to example 1, ascorbic acid was changed to caffeic acid in the same amount as ascorbic acid; the rest is equivalent to embodiment 1.
Comparative examples 1 to 6, increasing the ascorbic acid content to 6.5% relative to example 1; the rest is equivalent to embodiment 1.
Comparative examples 1 to 7, with respect to example 1, the inorganic reducing agent was entirely composed of sodium hypophosphite, and the amount of the inorganic reducing agent was kept constant; namely, the content of sodium hypophosphite is 0.25%; the rest is equivalent to embodiment 1.
Comparative examples 1-8, with respect to example 1, sodium hypophosphite was changed to sodium hypophosphite in the same amount as sodium hypophosphite; the rest is equivalent to embodiment 1.
TABLE 2 comparison of the antibacterial ratio of natural colored cotton before and after application of the comparative example 1 series with that of example 1
Figure BDA0002946109980000061
From table 2, it is clear that: the organic antioxidant is a key of the invention, the inorganic reducing agent is another key of the invention, the organic antioxidant and the inorganic reducing agent have synergistic action, and the alum additive also plays a certain role. The selection and content of the organic antioxidant and the inorganic reducing agent can influence the antibacterial result, and the excessive organic antioxidant can not improve the antibacterial effect and also increase the cost of the functional maintenance agent.
Comparative example 2-1
The content of the organic antioxidant resveratrol is increased to 6 percent relative to the content of the resveratrol in the example 4, and the rest is equal to the content of the resveratrol in the example 4.
The obtained natural colored cotton was tested according to the above-mentioned experiment, and the results of antibacterial ratio are shown in table 3.
Obviously, the antibacterial performance improvement effect of the natural colored cotton treated under the combination condition is slightly inferior to that of the natural colored cotton treated under the combination condition, but the cost is greatly increased and the cost is not paid back by increasing the content of the organic antioxidant; it follows that the content of organic antioxidant is not as high as possible, and that maintaining a reasonable content of organic antioxidant allows a high "cost/performance" to be achieved.
Comparative examples 2 to 2
The content of sodium sulfite, an inorganic reducing agent, was increased to 2.8% with respect to example 4, and the rest was identical to example 4.
The obtained natural colored cotton was tested according to the above-mentioned experiment, and the results of antibacterial ratio are shown in table 3.
Obviously, the antibacterial performance improvement effect of the natural colored cotton treated under the combination condition is almost the same as that of the natural colored cotton treated under the combination condition, but the color of the natural colored cotton is lighter and more obvious. The inorganic reducing agent with too high content can not further improve the antibacterial performance of the natural colored cotton, but can increase the cost and lighten the color of the natural colored cotton. It follows that the content of inorganic reducing agent is not as high as possible, and that maintaining a reasonable amount of organic antioxidant can achieve a high "cost performance" without affecting the color of natural colored cotton.
TABLE 3 antibacterial ratio of natural colored cotton before and after application of comparative examples 2-1 to 2-2
Figure BDA0002946109980000071
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.

Claims (8)

1. The function maintaining agent for natural color cotton product consists of organic antioxidant, inorganic reductant, additive and wet medium;
the sum of the weight of the organic antioxidant and the inorganic reducing agent accounts for 0.02 to 7 percent of the total weight of the functional maintenance agent;
the weight ratio of the organic antioxidant to the inorganic reducing agent is 1: 20-100: 1;
the additive accounts for 0.1-0.5% of the total weight of the functional maintenance agent.
2. The functional maintenance agent for natural color cotton product according to claim 1, characterized in that:
the organic antioxidant is at least one of ascorbic acid, resveratrol, coenzyme Q10 and superoxide dismutase;
the inorganic reducing agent is at least one of sodium hypochlorite, sodium hypophosphite and sodium sulfite.
3. The functional maintenance agent for natural color cotton product according to claim 2, characterized in that:
the organic antioxidant accounts for 0.01-5% of the total weight of the functional maintenance agent;
the inorganic reducing agent accounts for 0.01-2% of the total weight of the functional maintenance agent.
4. The functional maintenance agent for natural color cotton product according to claim 3, characterized in that:
the organic antioxidant accounts for 0.03-3.83% of the total weight of the functional maintenance agent;
the inorganic reducing agent accounts for 0.04-1.85% of the total weight of the functional maintenance agent;
the weight ratio of the organic antioxidant to the inorganic reducing agent is 0.06-10: 1.
5. The functional maintenance agent for natural color cotton product according to any one of claims 1 to 4, characterized in that:
the additive is alum and aluminum sulfate;
the wet medium is water or a washing water bath, and the washing water bath consists of a detergent and water.
6. The functional maintenance agent for natural color cotton product according to claim 1, characterized in that:
the function maintenance agent consists of 0.8 percent of ascorbic acid, 0.1 percent of coenzyme Q10, 0.2 percent of sodium hypophosphite, 0.05 percent of sodium sulfite, 0.5 percent of alum and water as the rest;
the above% is by weight%.
7. The use method of the functional maintenance agent according to any one of claims 1 to 6, wherein: and (3) soaking the natural colored cotton in a function maintenance agent, and then performing post-treatment.
8. The method of using a functional maintenance agent according to claim 7, wherein:
when the wet medium is water, the post-treatment comprises rinsing, spin-drying and room-temperature air-drying in sequence;
when the wet medium is washing water bath, the post-treatment comprises washing, spin-drying, rinsing, spin-drying and room-temperature air drying in sequence.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492585A (en) * 1982-07-07 1985-01-08 Societe Normande De Recherches Et De Participation Process for the antifelting treatment of keratinous fibres, comprising a basic oxidation catalyzed by a metal salt, and fibres so obtained
CN101285262A (en) * 2008-06-03 2008-10-15 东华大学 Moisture-keeping finishing method for natural colored cotton knit goods
CN101368331A (en) * 2008-09-25 2009-02-18 湖南多喜爱纺织科技有限公司 Cotton fabric inorganic nanometer antibiotic finishing agent and preparation method thereof
CN106689422A (en) * 2015-11-12 2017-05-24 中国石油天然气股份有限公司 Anti-oxidation composition and application thereof
CN109778527A (en) * 2019-01-16 2019-05-21 浙江理工大学 The processing method of the natural color cotton product of high-efficient and lasting antibacterial functions
CN112252059A (en) * 2020-10-18 2021-01-22 浙江理工大学 Natural color cotton deepening and color fixing after-finishing agent

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492585A (en) * 1982-07-07 1985-01-08 Societe Normande De Recherches Et De Participation Process for the antifelting treatment of keratinous fibres, comprising a basic oxidation catalyzed by a metal salt, and fibres so obtained
CN101285262A (en) * 2008-06-03 2008-10-15 东华大学 Moisture-keeping finishing method for natural colored cotton knit goods
CN101368331A (en) * 2008-09-25 2009-02-18 湖南多喜爱纺织科技有限公司 Cotton fabric inorganic nanometer antibiotic finishing agent and preparation method thereof
CN106689422A (en) * 2015-11-12 2017-05-24 中国石油天然气股份有限公司 Anti-oxidation composition and application thereof
CN109778527A (en) * 2019-01-16 2019-05-21 浙江理工大学 The processing method of the natural color cotton product of high-efficient and lasting antibacterial functions
CN112252059A (en) * 2020-10-18 2021-01-22 浙江理工大学 Natural color cotton deepening and color fixing after-finishing agent

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Application publication date: 20210622