CN115785303A - Sulfonated carboxymethyl tamarind gum and preparation method and application thereof - Google Patents
Sulfonated carboxymethyl tamarind gum and preparation method and application thereof Download PDFInfo
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- CN115785303A CN115785303A CN202211468989.XA CN202211468989A CN115785303A CN 115785303 A CN115785303 A CN 115785303A CN 202211468989 A CN202211468989 A CN 202211468989A CN 115785303 A CN115785303 A CN 115785303A
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- tamarind gum
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- sulfonated
- sulfonated carboxymethyl
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- 235000004298 Tamarindus indica Nutrition 0.000 title claims abstract description 64
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 240000004584 Tamarindus indica Species 0.000 title 1
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 70
- 241000596504 Tamarindus Species 0.000 claims abstract description 63
- 239000004744 fabric Substances 0.000 claims abstract description 29
- 229920000742 Cotton Polymers 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000006277 sulfonation reaction Methods 0.000 claims abstract description 12
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- FDRCDNZGSXJAFP-UHFFFAOYSA-M sodium chloroacetate Chemical group [Na+].[O-]C(=O)CCl FDRCDNZGSXJAFP-UHFFFAOYSA-M 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 claims description 5
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical group OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 claims description 4
- 229940106681 chloroacetic acid Drugs 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 claims description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 4
- BWYYYTVSBPRQCN-UHFFFAOYSA-M sodium;ethenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C=C BWYYYTVSBPRQCN-UHFFFAOYSA-M 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 43
- 238000006467 substitution reaction Methods 0.000 abstract description 21
- 230000000052 comparative effect Effects 0.000 description 16
- 239000000203 mixture Substances 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 229920001282 polysaccharide Polymers 0.000 description 7
- 239000005017 polysaccharide Substances 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- -1 polysaccharide compound Chemical class 0.000 description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 150000004676 glycans Chemical class 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 244000061456 Solanum tuberosum Species 0.000 description 3
- 235000002595 Solanum tuberosum Nutrition 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- 229960000583 acetic acid Drugs 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000012362 glacial acetic acid Substances 0.000 description 3
- 229920000578 graft copolymer Polymers 0.000 description 3
- 238000007641 inkjet printing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003472 neutralizing effect Effects 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 229920001661 Chitosan Polymers 0.000 description 2
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 229920002000 Xyloglucan Polymers 0.000 description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 229920002752 Konjac Polymers 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 230000021523 carboxylation Effects 0.000 description 1
- 238000006473 carboxylation reaction Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229930182830 galactose Natural products 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 229920000591 gum Polymers 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000252 konjac Substances 0.000 description 1
- 235000019823 konjac gum Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
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Abstract
The invention provides a sulfonated carboxymethyl tamarind gum and a preparation method and application thereof. The sulfonated carboxymethyl tamarind gum comprises the following raw materials in parts by weight: 100 parts of tamarind gum, 5-30 parts of a sulfonation reagent, 0.1-0.5 part of a depolymerizing agent, 5-30 parts of an etherifying agent, 3-20 parts of a catalyst and 60-150 parts of water. The sulfonated carboxymethyl tamarind gum disclosed by the invention is low in viscosity and substitution degree, high in paste removal rate when being used as a pretreatment agent for digital printing cotton fabrics, high in printing definition and high in color yield.
Description
Technical Field
The invention belongs to the technical field of digital printing cotton fabric pretreating agents, and relates to a sulfonated carboxymethyl tamarind gum and a preparation method and application thereof.
Background
The digital printing is to obtain digital graphic materials through modes of network, scanning, photographing, software drawing and the like, edit according to design requirements to obtain a printing design draft, convert the printing design draft into electronic instructions through digital printing software, spray ink on a pretreated fabric according to requirements by a printing system, and process and arrange the pretreated fabric to obtain a printing product. When the digital printing is carried out by using the reactive dye ink, the limitation of digital printing equipment is that the alkaline condition required by the combination of the dye and cotton fibers cannot be realized in the ink independently, and the self viscosity of the dye ink cannot be too high, which causes the ink to be easily infiltrated on the surface of the fabric, so that the fabric must be subjected to better pretreatment.
China is the country producing the most digital printing textiles at present. Printing on demand and personalized customization are future development trends, the influence on the digital printing or digital printing market of textiles is increased day by day, and the development of the ink-jet printing technology is powerfully promoted. The price of the digital printing consumables and the technical cost are gradually reduced, if the price of the reactive ink is reduced, the lower production running cost can certainly promote the market share of the industry to increase, and simultaneously, higher requirements are provided for the auxiliary agents.
Tamarind, also called tamarind and tamarind, belongs to a tall evergreen tree, is native to africa, is widely planted in tropical and subtropical regions, and has a large yield in india and thailand. The Yunnan area of China also has richer tamarind resources. Tamarind gum, commonly referred to as Tamarind Kernel Powder (TKP), is an off-white Powder made from Tamarind seeds. The main ingredient of Tamarind seed gum is Tamarind Seed Polysaccharide (TSP), and the content of Tamarind seed polysaccharide is about 65% or more. Tamarind seed polysaccharide belongs to xyloglucan (xyloglucan) in hemicellulose, and the molecular structure main chain of the tamarind seed polysaccharide is beta-D-1,4-connected glucose, and the side chains are alpha-D-1,6-connected xylose and beta-D-1,2-connected galactose. The tamarind gum is easy to disperse in cold water, is dissolved by heating, and has high viscosity. The tamarind gum can also be used as a printing and dyeing thickener in the textile industry.
CN102978971B discloses a disperse dye printing paste which is prepared by compounding hydroxyethyl modified tamarind gum, sodium carboxymethyl cellulose, konjac gum, sodium hexametaphosphate, anhydrous sodium sulfate and sodium dihydrogen phosphate. The above patent mentions a method for producing a hydroxyethyl-modified tamarind gum by a solvent method, but does not mention the degree of substitution and the range of substitution.
CN109235088A discloses a digital printing method for increasing the printing color depth of cotton fabrics, which comprises the steps of firstly adopting a digital printing pretreatment sizing agent containing a carboxylated polysaccharide compound or a carboxylated polyol compound to pretreat cotton fabrics, and then carrying out ink-jet printing on the pretreated cotton fabrics. The carboxyl polysaccharide (alcohol) compound is used as fabric digital printing paste to pretreat cotton fabrics, the carboxyl polysaccharide (alcohol) compound has high viscosity, good rheological property and low water holding capacity, so that more dyes are combined with fibers, the surface color of the fabrics is dark, and the friction fastness, especially the wet friction fastness, of the cotton fabrics is better due to the chemical bonding of the dyes and the fibers, so that the effect of improving the color depth of digital printing is achieved, the addition of urea is avoided, and the influence of ammonia nitrogen of the urea on the environment is reduced. However, the scope of substitution for carboxylation is not mentioned in the present invention.
CN110409199A discloses an active digital printing bottom paste and a preparation method thereof, wherein the digital printing bottom paste comprises the following components in percentage by weight: 1.5-2.5% of potato graft copolymer starch, 1-2% of polyurethane acrylate, 4-8% of cosolvent, 1.5-3% of sodium acetate, 1.5-3% of sodium silicate, 0.72-2% of water-soluble cationic chitosan quaternary ammonium salt and the balance of water. According to the active bottom paste, the potato graft copolymer starch and the polyurethane acrylate are matched, so that the stability is good, the pasting rate is high, and the K/S value and the permeability of the printing paste are improved; and meanwhile, the color fastness, particularly the washing fastness, of the system can be remarkably improved by adding sodium acetate, sodium silicate and water-soluble chitosan quaternary ammonium. However, the invention does not mention the grafting degree and water solubility of the main component potato graft copolymer starch.
CN114000364A discloses an active digital printing pretreatment agent for pure cotton knitted fabrics and a preparation method thereof. Based on the total weight of the active digital printing pretreatment agent for the pure cotton knitted fabric, the active digital printing pretreatment agent comprises the following components: 5-15 wt% of HPMC, 5-15 wt% of HEC, 10-20 wt% of modified sodium carboxymethylcellulose, 40-78 wt% of sodium sulfate, 1.5-7 wt% of modifier dispersion liquid and 0.5-3 wt% of penetrating agent. The reactive digital printing pretreatment agent for the pure cotton knitted fabric has the advantage of high bottom sizing stability, and has the characteristics of high color yield, high uniformity, high definition and the like when being applied to a reactive digital printing process of the cotton knitted fabric, and particularly has high back permeability of printing. However, the invention uses more and high-cost alcohol-washing modified cellulose ether, and the cost performance is low.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a sulfonated carboxymethyl tamarind gum and a preparation method and application thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention aims to provide a sulfonated carboxymethyl tamarind gum, which comprises the following raw materials in parts by weight:
the invention uses water as solvent, greatly reduces the production cost and the environmental protection pressure, the carboxymethyl substitution degree range of the prepared sulfonated carboxymethyl tamarind gum is 0.1-0.3, the sulfonic substitution degree range is 0.1-0.3, the sulfonated carboxymethyl tamarind gum belongs to a product with lower substitution degree, the consumption of etherifying agent and sulfonating agent is lower, the reaction requirement is reduced, the paste removing rate is high when the sulfonated carboxymethyl tamarind gum is used as a pretreatment agent for digital printing cotton fabrics, the printing definition is high, and the color yield is high.
Specifically, the sulfonated carboxymethyl tamarind gum comprises the following raw materials in parts by weight:
the weight portion of tamarind gum is 100.
The sulfonation reagent is present in an amount of 5 to 30 parts by weight, for example, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, and the like.
The depolymerization agent is 0.1-0.5 part by weight, for example, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, etc.
The etherifying agent is 5 to 30 parts by weight, for example, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, etc.
The catalyst is present in an amount of 3 to 20 parts by weight, for example, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, etc.
The water is 60 to 150 parts by weight, for example, 60 parts, 65 parts, 70 parts, 75 parts, 80 parts, 85 parts, 90 parts, 95 parts, 100 parts, 105 parts, 110 parts, 115 parts, 120 parts, 125 parts, 130 parts, 135 parts, 140 parts, 145 parts, 150 parts, or the like.
In the invention, the sulfonation reagent is 2-acrylamido-2-methylpropanesulfonic acid and/or sodium vinylsulfonate. 2-acrylamide-2-methylpropanesulfonic acid and/or sodium vinylsulfonate are/is used as a sulfonation reagent, and compared with other types of sulfonation reagents, the sulfonation reagent adopted by the invention has mild reaction and easily controlled reaction process. If the dosage of the sulfonation reagent is too small, the sulfonation degree is not enough; if the amount of the sulfonating agent is too large, the raw material is wasted and the reaction efficiency is lowered.
In the invention, the depolymerizing agent is hydrogen peroxide and/or sodium persulfate. The use of hydrogen peroxide and/or sodium persulfate as the depolymerization agent results in a lower viscosity if the amount of depolymerization agent added is too large and a higher viscosity if the amount of depolymerization agent added is too small.
In the invention, the etherifying agent is sodium chloroacetate and/or chloroacetic acid. Sodium chloroacetate and/or chloroacetic acid are/is used as an etherifying agent, and if the addition amount of the etherifying agent is too small, the carboxymethyl substitution degree is too low; if the amount of the etherifying agent added is too large, the cost is increased.
In the invention, the catalyst is sodium hydroxide and/or potassium hydroxide.
The second purpose of the invention is to provide a preparation method of the sulfonated carboxymethyl tamarind gum, which comprises the following steps: mixing tamarind gum with water according to a ratio, adding a sulfonation reagent, a depolymerization agent, an etherifying agent and a catalyst for reaction, cooling after the reaction is finished, adding acid for neutralization, and drying in vacuum to obtain the sulfonated carboxymethyl tamarind gum.
Wherein the reaction time is 1-3 hours, such as 1 hour, 1.5 hours, 2 hours, 2.5 hours, 3 hours; the reaction temperature is 50-80 deg.C, such as 50 deg.C, 55 deg.C, 60 deg.C, 65 deg.C, 70 deg.C, 75 deg.C or 80 deg.C.
Wherein the temperature of the cooling is 35-45 deg.C, such as 35 deg.C, 36 deg.C, 37 deg.C, 38 deg.C, 39 deg.C, 40 deg.C, 41 deg.C, 42 deg.C, 43 deg.C, 44 deg.C or 45 deg.C.
Wherein, the acid is adopted for neutralization.
The invention also aims to provide the application of the sulfonated carboxymethyl tamarind gum in the digital printing cotton fabric pretreating agent. The sulfonated carboxymethyl tamarind gum is used as a pretreatment agent for cotton fabrics, and has excellent paste removal rate and lower cost.
Compared with the prior art, the invention has the following beneficial effects:
the sulfonated carboxymethyl tamarind gum has low viscosity and low degree of substitution, and when the sulfonated carboxymethyl tamarind gum is used as a pretreatment agent for digital printing cotton fabrics, the degumming rate is high, the printing definition is high, and the color yield is high. Specifically, the prepared sulfonated carboxymethyl tamarind gum has a carboxymethyl substitution degree range of 0.1-0.3 and a sulfonic substitution degree range of 0.1-0.3, belongs to a product with a low substitution degree, has low usage amount of an etherifying agent and a sulfonating agent, and simultaneously reduces the reaction requirement; the viscosity of the prepared pretreating agent is 370-610cp, the paste removing rate is 99.0-99.3%, the printing clarity is high, and the color yield is high.
Drawings
FIG. 1 is a nuclear magnetic hydrogen spectrum of tamarind gum of the present invention;
FIG. 2 is a nuclear magnetic hydrogen spectrum of the sulfonated carboxymethyl tamarind gum prepared by the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached figures 1-2.
Unless otherwise specified, various starting materials of the present invention are commercially available or prepared according to conventional methods in the art.
Example 1
The preparation method of the sulfonated carboxymethyl tamarind gum of the present example is as follows:
mixing 100 g of tamarind gum (shown in a nuclear magnetic hydrogen spectrum diagram in figure 1) with 90g of water, adding 2 g of hydrogen peroxide and 15 g of sodium hydroxide, stirring the mixture for 15 minutes, heating to 70 ℃, preserving heat for 1 hour, adding 10g of sodium chloroacetate and 15 g of 2-acrylamido-2-methylpropanesulfonic acid, preserving heat for 1 hour at 70 ℃, cooling the mixture to room temperature, and neutralizing to pH7 by adding glacial acetic acid. And (3) drying the neutralized mixture in vacuum, and crushing to obtain a sulfonated carboxymethyl tamarind gum sample A, wherein a nuclear magnetic hydrogen spectrum diagram of the sulfonated carboxymethyl tamarind gum sample A is shown in a figure 2.
As can be seen from FIG. 2, the peak at 4.2ppm is the peak of methylene hydrogen of etherifying agent, the peak at 2.4ppm is the peak of hydrogen on methylene connected with amide group on sulfonating agent, the peak at 1.1ppm is the peak of hydrogen on methyl connected with amide group on sulfonating agent, and the sulfonation substitution degree is 0.15 and the carboxymethyl substitution degree is 0.22 calculated by the integration of the peaks.
Example 2
The preparation method of the sulfonated carboxymethyl tamarind gum of the present example is as follows:
mixing 100 g of tamarind gum with 110g of water, adding 2 g of hydrogen peroxide and 15 g of sodium hydroxide, stirring the mixture for 15 minutes, heating to 65 ℃, preserving heat for 1 hour, adding 15 g of sodium chloroacetate and 20 g of 2-acrylamido-2-methylpropanesulfonic acid, preserving heat for 1 hour at 65 ℃, cooling the mixture to room temperature, and neutralizing to pH7 by adding glacial acetic acid. And (4) drying the neutralized mixture in vacuum, and crushing to obtain a sulfonated carboxymethyl tamarind gum sample B.
The sulfonated carboxymethyl tamarind gum obtained in this example was calculated by the method of example 1 to have a degree of substitution of 0.15 by sulfonation and a degree of substitution of 0.20 by carboxymethyl.
Application example
The prepared sulfonated carboxymethyl tamarind gum A (sample A), the sulfonated carboxymethyl tamarind gum B (sample B) and the commercially available DGT-6 are used as raw materials to respectively prepare the pretreating agent for the digital printing cotton fabrics, and the specific formula is shown in Table 1.
TABLE 1
| Components | Mass percent (%) |
| Sodium bicarbonate | 1.5 |
| |
5 |
| Sample A/sample B/DGT-6 | 2 |
| Water (W) | 91.5 |
The viscosity was measured using a Brookfield viscometer at 30rpm at 25 ℃ in comparison with commercially available DTG-6, and the viscosity measurements are shown in Table 2.
TABLE 2
| Pretreating agent | Viscosity (cp) |
| Sample A preparation pretreatment agent | 580 |
| Sample B preparation of pretreatment agent | 650 |
| DGT-6 prepared pretreating agent | 620 |
Wherein, the pretreatment mode is as follows: soaking cotton fabric in a pretreating agent, uniformly rolling to remove the excessive pretreating agent on both sides, drying, ink-jet printing, fixing color (steaming at 108 ℃ for 8 min), washing, and drying.
Example 3
The preparation method of the sulfonated carboxymethyl tamarind gum of the present example is as follows:
this example is different from example 1 in that the sulfonating agent 2-acrylamido-2-methylpropanesulfonic acid is replaced with sodium vinylsulfonate, and the rest is the same as example 1.
Example 4
This example is different from example 1 in that the depolymerization agent hydrogen peroxide was replaced with sodium persulfate, and the other examples were the same as example 1.
Example 5
This example is different from example 1 in that sodium chloroacetate, an etherifying agent, was replaced with chloroacetic acid, and the same as example 1.
Comparative example 1
This comparative example differs from example 1 in that it was not sulfonated with a sulfonating agent, and was prepared as follows:
mixing 100 g tamarind gum with 90g water, adding 2 g hydrogen peroxide and 8 g sodium hydroxide, stirring for 15 min, heating to 70 deg.C, holding for 1 hr, adding 10g sodium chloroacetate, holding at 70 deg.C for 1 hr, cooling to room temperature, and neutralizing to pH7 by adding glacial acetic acid. And (4) drying the neutralized mixture in vacuum, and crushing to obtain a carboxymethyl tamarind gum sample.
Comparative example 2
This comparative example differs from example 1 in that the amount of sulfonating agent is too small, specifically 5 grams, and the reduced amount of sulfonating agent is added on average to the other components, all other things being equal to example 1.
Comparative example 3
This comparative example differs from example 1 in that the sulfonating agent was used in an excessive amount, specifically 25 g, and the added amount of sulfonating agent was subtracted from the other components on average, which were otherwise the same as in example 1.
Comparative example 4
This comparative example differs from example 1 in that the amount of depolymerization agent used is too small, specifically 1 gram, and the reduced amount of depolymerization agent is added on average to the other components, all else being the same as in example 1.
Comparative example 5
This comparative example differs from example 1 in that the amount of depolymerization agent used was too much, specifically 4 grams, and the amount of depolymerization agent added was on average subtracted from the other components, all other things being equal to example 1.
The sulfonated carboxymethyl tamarind gum prepared in examples 1-5 and the products prepared in comparative examples 1-5 were used to prepare a digital printing cotton fabric pretreating agent according to the formulation in table 1, and the performance test was performed, and the test results are shown in table 3.
The paste removal rate can reflect the elution condition of the digital printing cotton fabric pretreating agent and indirectly reflect the hand feeling of the printed cotton fabric. The higher the paste removal rate, the better the effect. The paste removal rate is the ratio of the mass difference before and after the printed cloth is washed to the sizing amount, and is counted by percentage. The color yield is measured by a color measuring instrument, the larger the value is, the darker the color yield is, and the higher the color yield is, and the judgment standard of the color yield is judged by referring to the general standard of the industry.
TABLE 3
As can be seen from Table 3, the sulfonated carboxymethyl tamarind gum of the present invention has low viscosity, low degree of substitution, high paste removal rate when used in digital printing cotton fabric pretreating agent, high printing clarity and high color yield. Specifically, the prepared sulfonated carboxymethyl tamarind gum has a carboxymethyl substitution degree range of 0.1-0.3 and a sulfonic group substitution degree range of 0.1-0.3, belongs to a product with a lower substitution degree, has lower usage amount of an etherifying agent and a sulfonating agent, and reduces the reaction requirement; the viscosity of the prepared pretreating agent is 370-610cp, the paste removing rate is 99.0-99.3%, the printing clarity is high, and the color yield is high.
Comparative example 1, which was not sulfonated with a sulfonating agent, resulted in poor paste removal and general print clarity and color yield.
Comparative example 2 too little sulfonating agent resulted in poor paste removal and general print clarity and color yield.
Comparative example 3 too much sulfonating agent was used, resulting in lower viscosity, increased phase change, and increased product cost.
Comparative example 4 too little depolymerization agent resulted in higher viscosity, poorer paste removal, and more general print definition and color yield.
Comparative example 5 the depolymerization agent used in too much amount causes the viscosity to become low, the phase change increases the amount used, and the product cost increases.
The present invention is illustrated by the above-mentioned examples, but the present invention is not limited to the above-mentioned detailed process equipment and process flow, i.e. it is not meant to imply that the present invention must rely on the above-mentioned detailed process equipment and process flow to be practiced. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The sulfonated carboxymethyl tamarind gum is characterized by comprising the following raw materials in parts by weight:
2. the sulfonated carboxymethyl tamarind gum according to claim 1, wherein the sulfonating agent is 2-acrylamido-2-methylpropanesulfonic acid and/or sodium vinylsulfonate.
3. The sulfonated carboxymethyl tamarind gum according to claim 1, wherein the depolymerization agent is hydrogen peroxide and/or sodium persulfate.
4. The sulfonated carboxymethyl tamarind gum according to claim 1, wherein the etherifying agent is sodium chloroacetate and/or chloroacetic acid.
5. The sulfonated carboxymethyl tamarind gum according to claim 1, wherein the catalyst is sodium hydroxide and/or potassium hydroxide.
6. A process for the preparation of the sulfonated carboxymethyl tamarind gum according to any one of claims 1 to 5, comprising the steps of:
mixing tamarind gum with water according to a ratio, adding a sulfonation reagent, a depolymerization agent, an etherifying agent and a catalyst for reaction, cooling after the reaction is finished, adding acid for neutralization, and drying in vacuum to obtain the sulfonated carboxymethyl tamarind gum.
7. The method according to claim 6, wherein the reaction time is 1 to 3 hours, and the reaction temperature is 50 to 80 ℃.
8. The method of claim 6, wherein the reduced temperature is from 35 ℃ to 45 ℃.
9. The method of claim 6, wherein the acid neutralization is with acetic acid.
10. Use of a sulfonated carboxymethyl tamarind gum as claimed in any one of claims 1 to 5 in a digital printed cotton fabric pretreatment.
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