CN116971049A - Manufacturing method of antistatic cationic dye dyeable polypropylene fiber - Google Patents
Manufacturing method of antistatic cationic dye dyeable polypropylene fiber Download PDFInfo
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- CN116971049A CN116971049A CN202311067141.0A CN202311067141A CN116971049A CN 116971049 A CN116971049 A CN 116971049A CN 202311067141 A CN202311067141 A CN 202311067141A CN 116971049 A CN116971049 A CN 116971049A
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- Prior art keywords
- polypropylene
- slice
- antistatic
- cationic dye
- dyeable
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- -1 polypropylene Polymers 0.000 title claims abstract description 95
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 90
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 90
- 125000002091 cationic group Chemical group 0.000 title claims abstract description 52
- 239000000835 fiber Substances 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000003607 modifier Substances 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- 238000004043 dyeing Methods 0.000 claims abstract description 14
- 230000004048 modification Effects 0.000 claims abstract description 8
- 238000012986 modification Methods 0.000 claims abstract description 8
- 229920000642 polymer Polymers 0.000 claims abstract description 8
- 150000007942 carboxylates Chemical class 0.000 claims abstract description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 5
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 claims abstract description 5
- 229920005604 random copolymer Polymers 0.000 claims abstract description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract 3
- 238000002074 melt spinning Methods 0.000 claims description 11
- 238000009987 spinning Methods 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 4
- 125000000129 anionic group Chemical group 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 150000007513 acids Chemical class 0.000 claims 1
- 239000004594 Masterbatch (MB) Substances 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 abstract description 2
- 239000011550 stock solution Substances 0.000 abstract description 2
- 239000000975 dye Substances 0.000 description 23
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 230000000996 additive effect Effects 0.000 description 7
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 239000000986 disperse dye Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 229920000151 polyglycol Polymers 0.000 description 3
- 239000010695 polyglycol Substances 0.000 description 3
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- XRBXGZZMKCBTFP-UHFFFAOYSA-N 4-(2,2-dihydroxyethoxycarbonyl)benzoic acid Chemical compound OC(O)COC(=O)C1=CC=C(C(O)=O)C=C1 XRBXGZZMKCBTFP-UHFFFAOYSA-N 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 1
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 description 1
- 229960001826 dimethylphthalate Drugs 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
Abstract
The invention relates to a manufacturing method of antistatic cationic dyeable polypropylene fiber. The antistatic cationic dye dyeable polypropylene fiber can be manufactured by a one-step method, a two-step method and a three-step method by blending and modifying the conventional polypropylene slice, the antistatic cationic dye dyeable polypropylene modifier and the dispersant. The antistatic cationic dye dyeable polypropylene fiber modifier mainly comprises polyethylene glycol acrylate, unsaturated carboxylate and unsaturated sulfonate random copolymer polymer. The invention is characterized in that: firstly, the dyeability of the polypropylene cationic dye is endowed by blending modification, the problem of difficult dyeing of the polypropylene is solved, the current situation that the stock solution is mainly dyed or master batch is changed, and the actual requirements and development trend of small batches and multiple varieties are met; secondly, the problems of poor hygroscopicity and poor conductivity of the polypropylene fiber and easiness in generating static electricity are solved, and durable antistatic property is provided.
Description
Technical Field
The invention relates to the technical field of textile fibers, in particular to an antistatic cationic dye dyeable polypropylene fiber which is prepared by adding an antistatic cationic dye dyeable polypropylene modifier into a conventional polypropylene slice and blending and melt spinning.
Background
Polypropylene is also called polypropylene fiber, which is one of five synthetic fibers, can be spun into short fibers, and is blended with fibers such as cotton, wool, viscose and the like, and also can be made into filaments for weaving carpets, decorative cloths, industrial cloths and clothing fabrics, but the dyeing difficulty is caused by high crystallinity and compact structure, and the fact that a macromolecular chain has no polar group capable of being combined by dye molecules. Dyeing with disperse dye can only obtain light color, and the dyeing fastness such as friction, water washing and dry cleaning brightness is poor, so that the requirements of textile fibers cannot be met; at present, the polypropylene is mainly dyed by stock solution or master batch, so that colored fibers can be obtained, the effect is good, but the color spectrum is incomplete, the polypropylene is only suitable for mass production, the dyeing lacks flexibility and color diversity, and the development trend of small batches and multiple varieties is difficult to meet.
The method for improving the dyeing property of the polypropylene fiber mainly comprises two types of copolymerization modification and blending modification. The copolymerization modification is mainly that the second and third monomers are copolymerized with propylene or graft copolymerized on a polymer macromolecular chain, and a polar group capable of being combined with dye molecules is introduced; the blending modification is to add a small amount of modifier or additive into the spinning solution and then spin. The method is simple and easy to implement, has little influence on the physical properties of the polypropylene fiber, and is more studied at present.
CN1818203A, CN1103440A, CN102719934A, CN1053456a modified conventional polypropylene was dyed with disperse dye. There are also cationic dyes for dyeing by blending with modifiers, such as: CN101812741a discloses polypropylene alloy fiber, wherein cationic dyeable polyester is added into maleic anhydride modified polypropylene resin, and polypropylene alloy fiber with excellent dyeing property is obtained through blending melt spinning; CN1362547a discloses a process for producing antibacterial antistatic cationic dyeable polypropylene fiber, which comprises spinning a cationic dyeable additive, an additive having antibacterial function and polypropylene resin, wherein the cationic dyeable additive is prepared from terephthalic acid or dimethyl terephthalate, ethylene glycol, 5-sulfonic acid alkali metal salt meta (p) dimethyl phthalate, and polyglycol mixture by transesterification or direct esterification; CN1464082a discloses a method for preparing antistatic cationic dyeable polypropylene, which is modified by adding 8-12% of dyeing additive into polypropylene resin, wherein the dyeing additive is copolymer formed by copolymerizing terephthalic acid, 5-sulfonic acid alkali metal salt meta (dimethyl terephthalate) and ethylene glycol; CN101476175a discloses dyeable and antistatic polypropylene fibers and a method for preparing the same, spun by blending at least one dyeable polymer component with a polypropylene component, wherein the dyeable polymer component is selected from at least one of copolymers of polyethylene terephthalate and polyglycols; CN1448549a is modified with a copolymer of polyglycol and dimethyl terephthalate, 5-sulfonic acid alkali metal salt meta (dimethyl terephthalate), ethylene glycol, to obtain an antistatic cationic dyeable polypropylene fiber. Also after modification, it can be dyed with either disperse or cationic dyes, such as: CN1141967a adopts dihydroxyethyl terephthalate resin containing dicarboxylic groups which cannot be your as an additive, and is blended with polypropylene resin for spinning, so as to obtain polypropylene fiber dyeable by disperse dye or antistatic cationic dye. CN102704288A is prepared by mixing polymer shell-core structure-containing ionic nano powder with polypropylene resin, modifying, and spinning into fine denier polypropylene, and can be dyed with cationic dye and disperse dye. CN101748514a is modified with a copolymer of polybutylene terephthalate and polyethylene glycol ether to obtain a polypropylene fiber which is hygroscopic, dyeable and antistatic.
Disclosure of Invention
The invention aims to provide a novel polypropylene fiber which is different from other patents and can simultaneously solve the technical problems that the conventional polypropylene fiber cannot be dyed by cationic dye and is easy to generate static electricity. Compared with the prior related patent, the invention has the following characteristics:
A. the main components of the modifier used in the invention are random copolymerization polymer compounds of polyethylene glycol acrylic ester, unsaturated carboxylate and unsaturated sulfonate, and the modifier is different from the existing modifier;
B. the modifier structure contains a large number of sodium sulfonate groups and sodium carboxylate groups which can be combined with the cationic dye, so that the dosage of the modifier can be flexibly adjusted according to the required dyeing depth;
C. the modifier structure contains a large amount of sodium sulfonate groups and sodium carboxylate groups, and is a polyelectrolyte; in addition, there are a large number of hydrophilic- (CH) s in the structure 2 CH 2 O) -repeating units, thus having excellent antistatic properties;
D. the modifier is a high molecular polymer, and can not be separated out after being added, and the durability is good.
The specific technical scheme of the invention is as follows:
the preparation process of antistatic cationic dyeable polypropylene fiber includes three steps:
the one-step method comprises the following steps: the conventional polypropylene slice, the antistatic cationic dye dyeable polypropylene modifier and the dispersing agent are uniformly mixed, and melt spinning is directly carried out to prepare the antistatic cationic dye dyeable polypropylene fiber.
The two-step method comprises the following steps:
A. preparation of modified slices: uniformly mixing a conventional fiber-grade polypropylene slice, an antistatic cationic dye-dyeable polypropylene modifier and a dispersing agent, and carrying out melt casting, slice and drying to obtain a modified slice;
B. preparation of modified polypropylene fiber: and (3) metering and mixing the modified slice with a conventional fiber-grade polypropylene slice, and carrying out melt spinning to obtain the antistatic cationic dye dyeable polypropylene fiber.
The three-step method comprises the following steps:
A. preparation of colored sections: uniformly mixing a conventional fiber-grade polypropylene slice, an antistatic cationic dye-dyeable polypropylene modifier and a dispersing agent, and carrying out melt casting, slice and drying to obtain a modified slice;
B. dyeing the modified slice by using a cationic dye to obtain a colored slice;
C. preparing colored polypropylene fibers: and (3) metering and mixing the colored slices with conventional fiber-grade polypropylene slices, and carrying out melt spinning to obtain the colored antistatic polypropylene fibers.
The antistatic cationic dye dyeable polypropylene modifier mainly comprises random copolymer of methyl (methyl) acrylate, unsaturated carboxylate and unsaturated sulfonate, wherein the dosage of the unsaturated carboxylate and the sulfonate is not less than 80%.
The dosage of the modifier in one-step spinning is 1-10% of the total mass of the spinning slice, preferably 2-5%; the dosage of the antistatic cationic dye dyeable polypropylene modifier for preparing the modified slice is 20-50% of the total mass of the modified slice, preferably 30-40%.
The dispersing agent is an anionic dispersing agent, such as salts of capric acid (R-COONa), sulfonate (R-SO) 3 Na), sulfate salts (R-OSO 3 Na), low molecular weight sodium polyacrylate, low molecular weight sodium salt of Maropropion copolymer, etc., the dosage of which is modified1-8% of the total mass of the slice, preferably 2-5%.
The melting temperature for preparing the modified slices and spinning is 220-300 ℃, preferably 230-250 ℃.
The metering ratio of the modified slice or the colored slice to the conventional polypropylene slice during spinning can be adjusted according to the color shade, and the recommended mass ratio is 1:5-40, preferably 1:6-30.
Detailed Description
The invention is illustrated by the following examples, which are given solely for the purpose of further illustration and are not intended to limit the scope of the invention. Some insubstantial modifications and adaptations of the invention by others are within the scope of the invention. All parts below are parts by mass.
Example 1:
uniformly mixing 4 parts of antistatic cationic dye dyeable polypropylene modifier, 2.5 parts of dispersing agent and 93.5 parts of conventional polypropylene slice, and carrying out melt spinning at 240-245 ℃ to prepare the antistatic cationic dye dyeable polypropylene.
Example 2:
A. uniformly mixing 40 parts of antistatic cationic dye dyeable polypropylene modifier, 4 parts of dispersing agent and 56 parts of conventional polypropylene slice, melting and casting the belt at 230-240 ℃, slicing, and drying at 130 ℃ for 1 hour to obtain modified slice;
B. and uniformly mixing 8 parts of modified slices with 92 parts of conventional polypropylene slices, and carrying out melt spinning at 240-245 ℃ to obtain the antistatic cationic dye dyeable polypropylene fiber.
Example 3:
A. uniformly mixing 66.5 parts of conventional polypropylene slice, 30 parts of antistatic cationic dye dyeable polypropylene modifier and 3.5 dispersing agent, melting and casting the belt at 230-240 ℃, slicing and drying at 130 ℃ for 1 hour to obtain modified slice;
B. dyeing the modified slice with 3% cationic dye to obtain a colored slice;
C. uniformly mixing 10 parts of colored slices with 90 parts of conventional polypropylene slices, and carrying out melt spinning at 240-245 ℃ to obtain the colored polypropylene fibers.
Claims (6)
1. The manufacturing method of the antistatic cationic dye dyeable polypropylene fiber is characterized in that conventional polypropylene chips, an antistatic cationic dye dyeable polypropylene modifier and a dispersing agent are utilized for blending modification, and the manufacturing method of the antistatic cationic dye dyeable polypropylene fiber comprises the following three methods:
the one-step method comprises the following steps: uniformly mixing a conventional polypropylene slice, an antistatic cationic dye dyeable polypropylene modifier and a dispersing agent, and directly carrying out melt spinning to obtain an antistatic cationic dye dyeable polypropylene fiber;
the two-step method comprises the following steps:
A. preparation of modified slices: uniformly mixing a conventional fiber-grade polypropylene slice, an antistatic cationic dye-dyeable polypropylene modifier and a dispersing agent, and carrying out melt casting, slice and drying to obtain a modified slice;
B. preparation of modified polypropylene fiber: metering and mixing the modified slice with a conventional fiber-grade polypropylene slice, and carrying out melt spinning to obtain an antistatic cationic dye-dyeable polypropylene fiber;
the three-step method comprises the following steps:
A. preparation of colored sections: uniformly mixing a conventional fiber-grade polypropylene slice, an antistatic cationic dye-dyeable polypropylene modifier and a dispersing agent, and carrying out melt casting, slice and drying to obtain a modified slice;
B. dyeing the modified slice by using a cationic dye to obtain a colored slice;
C. preparing colored polypropylene fibers: and (3) metering and mixing the colored slices with conventional fiber-grade polypropylene slices, and carrying out melt spinning to obtain the colored antistatic polypropylene fibers.
2. The method for manufacturing the antistatic cationic dye-dyeable polypropylene fiber according to claim 1, wherein the antistatic cationic dye-dyeable polypropylene fiber modifier mainly comprises polyethylene glycol acrylate, unsaturated carboxylate and unsaturated sulfonate random copolymer polymer, wherein the content of the polyethylene glycol acrylate is 5-25%, and the dosage of the unsaturated carboxylate and sulfonate is 75-95%.
3. The method for manufacturing the antistatic cationic dyeable polypropylene fiber according to claim 1, wherein the amount of the modifier used in the one-step spinning is 1-10%, preferably 2-5% of the total mass of the spun yarn; the dosage of the antistatic cationic dye dyeable polypropylene modifier for preparing the modified slice is 20-50% of the total mass of the modified slice, preferably 30-40%.
4. The process for producing an antistatic cationic dyeable polypropylene fiber according to claim 1, wherein said dispersant is an anionic dispersant such as salts of said acids (R-COONa), sulfonates (R-SO) 3 Na), sulfate salts (R-OSO 3 Na), low molecular weight sodium polyacrylate, low molecular weight sodium salt of the Marinotte copolymer, etc., in an amount of 1-8%, preferably 2-5% of the total mass of the modified monomer.
5. The process for producing an antistatic cationic dyeable polypropylene fiber according to claim 1, wherein the melting temperature at the time of preparing the modified chips and spinning is 220 to 300 ℃, preferably 230 to 250 ℃.
6. The method for manufacturing the antistatic cationic dyeable polypropylene fiber according to claim 1, wherein the metering ratio of the modified slice or the colored slice to the conventional polypropylene slice can be adjusted according to the color shade, and the recommended mass ratio is 1:5-40, preferably 1:6-30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311067141.0A CN116971049A (en) | 2023-08-23 | 2023-08-23 | Manufacturing method of antistatic cationic dye dyeable polypropylene fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311067141.0A CN116971049A (en) | 2023-08-23 | 2023-08-23 | Manufacturing method of antistatic cationic dye dyeable polypropylene fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116971049A true CN116971049A (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311067141.0A Pending CN116971049A (en) | 2023-08-23 | 2023-08-23 | Manufacturing method of antistatic cationic dye dyeable polypropylene fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116971049A (en) |
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2023
- 2023-08-23 CN CN202311067141.0A patent/CN116971049A/en active Pending
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