CN102260373A - Normal pressure cationic dye dyeable polyester, production method thereof, and purpose thereof - Google Patents
Normal pressure cationic dye dyeable polyester, production method thereof, and purpose thereof Download PDFInfo
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- CN102260373A CN102260373A CN201010192656XA CN201010192656A CN102260373A CN 102260373 A CN102260373 A CN 102260373A CN 201010192656X A CN201010192656X A CN 201010192656XA CN 201010192656 A CN201010192656 A CN 201010192656A CN 102260373 A CN102260373 A CN 102260373A
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Abstract
The invention discloses normal pressure cationic dye dyeable polyester, a production method thereof, and a purpose thereof. The polyester is produced from materials of dimethyl terephthalate, ethylene glycol, poly alkylene glycol, and dimethyl m-phthalate containing metal sulfonate group. The materials are copolymerized under a catalyzing effect provided by soluble titanium compounds, such that the polyester is obtained. Relative to the weight of polyester, content of sulfur element in the polyester is 300 to 11000ppm, content of alkylidene glycol group in the polyester is 0.1 to 10wt%, content of soluble titanium in the polyester is 1 to 1000ppm, content of antimony element in the polyester is lower than 3ppm. According to the method, nontoxic and environment protecting titanium compounds are adopted as catalysts. Obtained polyester has characteristics of high melting point, high thermal stability and good spinnability. Fabrics manufactured with the polyester have good dyeability under a normal pressure.
Description
Technical field
The present invention relates to polyester and the production method and the purposes of cationic dye capable of dyeing under a kind of normal pressure.
Background technology
By aromatic acid and aliphatic dihydroxy alcohol copolymerization and the polyester that obtains is widely used in fields such as resin, fiber, film.Current, people more and more pay attention to environment protection and energy saving, and aspect fiber applications, can use cationic dyestuff to carry out painted polyester under atmospheric low-temperature becomes new demand.
As some known can barometric point and under 100 ℃ or lower temperature with the copolyester polymer and the copolyester fiber of cationic dyeing, the Chinese patent CN101298493 of company of Hyosung Corp discloses can be with copolyester polymer, its manufacture method of cationic dyeing and the copolyester fiber that makes thereof under barometric point.Concrete is to disclose a kind of copolyester polymer, the two hydroxyl ethyl esters of the m-phthalic acid with metal sulfonate that this polymkeric substance has comprised the binary lipid acid of 1 mole of % to the 20 mole of % that accounts for the total dicarboxylic acid component and accounted for 1.0 moles of % to 2.0 mole of % of total dicarboxylic acid component, and polymer ends carboxyl concentration is that 30 equivalent/tons are to 50 equivalent/tons.
But, can under barometric point, on spinnability, there be more serious defective by the copolyester polymer with cationic dyeing by this invention is prepared, in spinning process, filter presses and rises comparatively fast, so is difficult in industrial application.
In addition, along with the enhancing of global environment consciousness, people are to the whether environmental protection of the catalyzer that uses in the polyester, the whether new and higher requirement of harmful proposition, and many countries have just worked out the laws and rules of being correlated with at this requirement.But, at present the polyester catalyst that uses all more or less contain harmful heavy metal and poisonous element, be difficult to reach the requirement of corresponding laws and regulations.
Therefore, people need a kind ofly can prepare copolyester polymer and its preparation method and the fiber of this polymkeric substance manufacturing that can use cationic dyeing under barometric point, and also want environmental protection in manufacturing and use, and are harmless.
Summary of the invention
The purpose of this invention is to provide that a kind of good spinning property, Product Safety are good, the polyester, the preparation method of this polyester of cationic dye capable of dyeing under the normal pressure of saving energy type, and the fiber that uses this polyester manufacturing.
The problem that emphasis of the present invention will solve is that to use the catalyzer of asepsis environment-protecting to replace aborning used to environment and the human body harmful's or contain the catalyzer of heavy metal and the spinning property problem in spinning process.
Technical scheme of the present invention is: a kind of atmospheric cation dyeable polyester, and this polyester is formed by dimethyl terephthalate (DMT), ethylene glycol, polyalkylene glycol and dimethyl isophthalate copolymerization under the katalysis of soluble titanium based compound with metal sulfonate salt group; With respect to weight polyester, the content of element sulphur is 300～11000ppm in the polyester, and the content of aklylene glycol group is 0.1～10wt%, and the content of titanium elements is 1～1000ppm, and antimony element content is below the 3ppm.
The preferred polyoxyethylene glycol of described poly-alkylene glycol.
The fusing point of polyester of the present invention is 220～240 ℃, and the terminal carboxyl(group) content of polyester is 30 equivalents/below the ton, preferred 25 equivalents/and below the ton.When the content of terminal carboxyl(group) during greater than 30 equivalents/ton, the thermotolerance of copolyesters is reduced, spinning property descends, and yarn property is poor, and intensity is low.The present invention more effectively controls polyester terminal carboxyl(group) content by adding phosphonium stabilizer, thereby improves the thermotolerance of polyester, improves spinning property and yarn property; In addition, phosphonium stabilizer can also improve the foreign matter amount that produces in the polymerization process effectively, improves spinning property well, slows down the spinning pressure lift velocity, improves the spinning cycle, reduces the spinning cost.
Described phosphonium stabilizer can be phosphoric acid, phosphorous acid, trimethyl phosphite 99 etc., wherein the phosphide of preferred pentavalent.The addition of phosphonium stabilizer is that 5～150ppm calculates with the P element with respect to weight polyester, preferred 5～100ppm.
The content of glycol ether DEG is below the 2.0wt% in the polyester of the present invention.When the content of glycol ether is higher than 2.0wt%, the thermotolerance of copolyesters is reduced, spinning property descends, the fracture of wire that occurs in spinning process, a phenomenon of wafing.The present invention also adds and contains the potassium element compound, contains in elemental lithium compound or the organic amine compound one or more as basic catalyst in esterification or polycondensation, it adds total amount is 10ppm～5000ppm with respect to the polyester total amount, solve the higher problem of glycol ether content in the polyester effectively, thereby improved spinning property.
Wherein the organic amine catalyzer is preferred, is the catalyzer that does not contain metallic element mainly due to it, is less than the basic catalyst that contains metallic element on production of foreign matters, can greatly improve the spinning property of polyester.
The preferred hydroxide tetraethyl-of organic amine catalyzer amine, triethylamine and tri-n-octyl amine etc., more preferably hydroxide tetraethyl-amine, the general content that adds hydroxide tetraethyl-amine is 10～2000ppm of weight polyester, and can be controlled at the DEG content of polyester below the 2.0wt% this moment.
The production method of atmospheric cation dyeable polyester of the present invention comprises esterification and polycondensation, and the dimethyl isophthalate with metal sulfonate salt group added in the esterification stage, and poly-alkylene glycol adds in polymerization stage; Employing is the processing method that basic material carries out synthesizing polyester with dimethyl terephthalate (DMT) (DMT) and ethylene glycol (EG).The dimethyl isophthalate that adds dimethyl terephthalate (DMT) (DMT), ethylene glycol (EG) and have metal sulfonate salt group in esterification adds poly-alkylene glycol in polymerization stage.
The addition of polyalkylene glycol is 0.1～10wt% with respect to weight polyester preferably.
Addition with dimethyl isophthalate of metal sulfonate salt group is 0.1～10wt% with respect to weight polyester preferably.
Dimethyl isophthalate with metal sulfonate is one of reaction monomers, and metal wherein is the alkaline species metal, preferred sodium, potassium or lithium etc.
Because antimony catalyst environment and HUMAN HEALTH had indirectly or directly pollute and injure; therefore; the present invention is directed to environment and to the protection of HUMAN HEALTH; replace antimony catalyst with soluble titanium based compound catalyzer; but the antimony element that in the catalyzer that uses, may contain trace; the present invention proposes strict antimony element content, requires antimony element content≤3ppm, does not have injury to guarantee product of the present invention to environment with to HUMAN HEALTH.
The present invention respectively esterification or and polyreaction in add catalyzer, added catalyzer comprises soluble titanium compound catalyst, basic catalyst, phosphorus stabilizer agent, oxidation inhibitor, TITANIUM DIOXIDE DELUSTRANT etc.
In detail, the present invention is the main catalyzer of esterification and polyreaction with the soluble titanium compound.The soluble titanium compound can be the titanium metal alkoxide of tetrabutyl titanate, titanium isopropylate, isopropyl titanate or titanium ethylene glycolate etc.; Ethylenediamine tetraacetic acid (EDTA), hydroxyethyliminodiacetic acid, diethylene-triamine pentaacetic acid, triethylenetetramine six acetate, or as titanium complex body of the polyvalent carboxylic acid of sequestrant and/or hydroxycarboxylic acid and/or nitrogenous carboxyl etc.Described sequestrant is the hydroxy carboxylic acids of phthalic acid, three sour three monooctyl esters, trimesic acid, hemimellitic acid, pyromellitic acid anhydride etc.; Or contain ethylenediamine tetraacetic acid (EDTA), NTP, carboxyl imido oxalic acid, carboxymethyl imido grpup dipropionic acid, diethylene-triamine pentaacetic acid, triethylenetetramine six acetate, imines two acetic acid, imido grpup dipropionic acid, 2-hydroxyethyl-imido grpup acetate, 2-hydroxyethyl-imido grpup dipropionic acid, the 2-methoxy ethyl-imido grpup acetate of nitronic acid.Catalyzer also comprises other metal compound as catalyst, specifically is meant calcium cpds such as calcium acetate, calcium chloride, magnesium compounds such as magnesium acetate, magnesium chloride, magnesiumcarbonate, germanium compounds such as germanium oxide, germanium chloride.
Atmospheric cation dyeable polyester of the present invention, the content of DEG is low, and resistance toheat is good.Polyester of the present invention has the characteristic of fusing point height, thermostability height, good spinnability, by the fabric of its manufacturing dyeability is preferably arranged, and has the normal pressure dyeability.
Copolyesters of the present invention can pass through direct polymerization method or DMT manufactured.Can also make by batchwise polymerization method or continuous polymerization.
In addition, copolyesters of the present invention can be made fiber and then form fabric by known method, and the finished product that makes has good dyeability and higher thermotolerance.
Embodiment
The present invention will be described in more detail below by embodiment.In addition, the physics value among the embodiment is measured by following method.
(1) the intrinsic viscosity IV of polyester
Under 25 ℃, measure as solvent with ortho chloro phenol.
(2) (the equivalent/ton) of the terminal group carboxy CO OH in the polyester
, on automatic titration device (COM-550 of flat natural pond industry company manufacturing), measure down as solvent with Ortho Cresol at 25 ℃ with the NaOH aqueous solution of concentration 0.02mol/L.
(3) content of glycol ether DEG (wt%) in the polyester
As solvent, with 1,6-ethylene glycol/methanol mixed post-heating dissolving adds methyl alcohol then and cleaned 10 minutes with ultrasonic cleaner with monoethanolamine.Add acid then and carry out neutralizing treatment, after the filtration, use gas chromatograph (the system GC-14A of Shimadzu Seisakusho Ltd.) to measure filtrate.
(4) metal content in the polyester
The 6g polymkeric substance is pressed into sheet, measures its intensity with fluorescent x-ray analysis apparatus (of science electric corporation make x-ray analysis device 3270 types), the detection line that makes in advance with the sample of known metal content converts.
(5) polymkeric substance tone
The tone of polymkeric substance: use spectrophotometer to measure tone whiteness L and Huang Du b value.
Embodiment 1
In esterifying kettle, add the DMT (dimethyl terephthalate (DMT)) of 15000g and the EG (ethylene glycol) of 8600g, add dimethyl isophthalate (AD2100) 415g that contains sulfonic acid group again, add molecular weight again and be 4000 polyoxyethylene glycol (PEG4000) 150g, and add catalyst Ti Compound P C-50 2.5g, and catalyst acetic acid magnesium 90g, add catalyzer alkalescence Lithium Acetate 150g simultaneously, stir and in 4 hours, be warmed up to 240 degree; By judgement to by product, treat that the esterification rate reaches more than 97%, prepared BHT oligopolymer is moved into polymeric kettle; At room temperature, add phosphorus stabilizer agent trimethyl phosphite 99 earlier, add TITANIUM DIOXIDE DELUSTRANT again; Subsequently, the intensification of reducing pressure is carried out polymerization with conventional polycondensation of polyester method, thereby is made the normal atmosphere cation-dyeable multipolymer.
The intrinsic viscosity of gained polyester is 0.67, the concentration of terminal group COOH is 19 equivalents/ton, the content of element sulphur is 2970ppm in the polyester, the content of aklylene glycol group is 1wt%, the content of soluble titanium element is 10ppm, the content of phosphorus atom is that the content of 18ppm, antimony element is that the content of 2ppm, TiO 2 particles is 0.07wt%, and the content of DEG is 1.46wt%.
Its moisture rate is remained on below the 50ppm multipolymer chip drying that obtains, melt-spinning under 290 ℃ spinning temperature batches under the pulling speed of 3000m then.The undrawn yarn that obtains stretches under the condition of 90 ℃ of draft temperatures, 1.65 times of stretching ratios, batches after 130 ℃ of following heat setting type then, obtains the drawn yarn of 56dtex/24f.
The silk that obtains is carried out tube volume, with the evaluation of dyeing of following condition.With high temperature dyeing trier URMINI-COLOR (the small-sized staining agent of infrared rays (TEXAM technical study manufacturing) mixing treating liquid, dyeing under the condition of 95 ℃ * 30min.This moment, the medicament of used treatment solution was as follows.
Dianix Blue E-Plus (manufacturing of De Sida company, dispersed dye) 5owf%
NIKKA SUNSALT (manufacturing of solar corona chemical company, levelling agent) 1g/l
Acetic acid (pH regulator agent) 0.5g/l
After the dyeing, the medicament preparation treatment solution below using under the condition of 80 ℃ * 20min carries out reduction clearing.
Sodium hydroxide 0.6g/l
Sodium bisulfite 2g/l
Then, tube is compiled thing washing, air-dry back as assess sample.Sample is overlapped into after 8 layers with spectral photometric colour measuring meter (Datacolor 650 that Datacolor Asia Pacific (H.K.) Ltd. makes) colour examining, L*=30.0.L* is meant the lightness in L*, a* and the b* color specification system, and the more little dyeability of numerical value is good more.The result is as shown in table 1.
Embodiment 2
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%; Specifically as shown in table 1, the fracture of wire phenomenon can not take place in the good heat resistance of copolyesters within the scope of the present invention in spinning process, and its fabric has good dyeability.
Embodiment 3
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 10%; Specifically as shown in table 1.
Embodiment 4
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%; And the addition of control AD2100 makes that the S constituent content is 300pm in the polyester; Specifically as shown in table 1.
Embodiment 5
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and the addition of control AD2100 makes that the S constituent content is 5000pm in the polyester; Specifically as shown in table 1.
Embodiment 6
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and the addition of control AD2100 makes that the S constituent content is 11000pm in the polyester; Specifically as shown in table 1.
Embodiment 7
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and the addition of control phosphorus stabilizer agent makes that the P constituent content is 0 in the polyester; Specifically as shown in table 1.
Embodiment 8
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and the addition of control phosphorus stabilizer agent makes that the P constituent content is 5ppm in the polyester; The result is as shown in table 1.
Embodiment 9
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and the addition of control phosphorus stabilizer agent makes that the P constituent content is 100ppm in the polyester; Specifically as shown in table 1.
Embodiment 10
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and the addition of control phosphorus stabilizer agent makes that the P constituent content is 150ppm in the polyester; Specifically as shown in table 1.But this moment, polymerization reaction time also sharply increased along with the increase of phosphorus stabilizer dosage, and especially when reaching 150ppm, polymerization time has surpassed 4 hours, and therefore, it is not suitable for industrialized production.
Embodiment 11
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and control soluble titanium catalyzer addition makes that titanium elements content is 1ppm in the polyester; Specifically as shown in table 1.
Embodiment 12
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and control soluble titanium catalyzer addition makes that titanium elements content is 20ppm in the polyester; Specifically as shown in table 1.
Embodiment 13
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and control soluble titanium catalyzer addition makes that titanium elements content is 1ppm in the polyester; Specifically as shown in table 1.
Embodiment 14
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, in addition 1000ppmLAH is transformed into 1000ppmEAH; Specifically as shown in table 1.
Embodiment 15
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, in addition 1000ppmLAH is reduced to 0; Specifically as shown in table 1.
Embodiment 16
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, in addition 1000ppmLAH is transformed into 500ppmLAH and 500ppmEAH; Specifically as shown in table 1.
Embodiment 17
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, in addition 1000ppmLAH is transformed into 5000ppm, and is specifically as shown in table 1.
Embodiment 18
Replace DMT with PTA (terephthalic acid), all the other conditions are with embodiment 1.Specifically as shown in table 1.Similar when its correlated performance index and usefulness DMT.
Comparative example 1
On embodiment 1 basis, the addition of control PEG4000 makes that the content of aklylene glycol group is 6%, and the addition of control AD2100 makes that the S constituent content is 15000pm in the polyester, and is specifically as shown in table 1; The value of L* was 37.5 when dyeing temperature was 95 ℃.Find when the S of AD2100 element in polyester during content 15000ppm, the serious fracture of wire phenomenon of appearance in spinning process.
Comparative example 2
On embodiment 1 basis, the addition with control PEG4000 makes that the content of aklylene glycol group is 15%, and is specifically as shown in table 1; Find when the content of PEG4000 is increased to 15%, serious fracture of wire phenomenon in spinning process, occurs.
At above embodiment in force, all adopt non-antimony compounds as catalyzer, wherein with the soluble titanium compound as Primary Catalysts, but in catalyst themselves or raw material, may there be the micro-antimony element, this is not that the artificial origin brings into, the purity that is catalyzer and raw material causes, but the present invention controls employed catalyzer and material quality, and the antimony element content in the final polymkeric substance is all below 3ppm.
More than English in each embodiment and the comparative example to be called for short specific explanations as follows:
(a) PEG4000: molecular weight is 4000 polyoxyethylene glycol
(b) PEG1000: molecular weight is 1000 polyoxyethylene glycol
(c) AD2100:5-sodium sulfonate-dimethyl isophthalate
(d) PC-50: titanium compound (E.I.Du Pont Company's Titanium series catalyst)
(e) LAH: Lithium Acetate
(f) EAH: tetraethyl ammonium hydroxide
(g) DMT: dimethyl terephthalate (DMT)
(h) PTA: terephthalic acid
Table 1
Claims (8)
1. atmospheric cation dyeable polyester is characterized in that: this polyester is formed by dimethyl terephthalate (DMT), ethylene glycol, polyalkylene glycol and dimethyl isophthalate copolymerization under the katalysis of soluble titanium based compound with metal sulfonate salt group; With respect to weight polyester, the content of element sulphur is 300～11000ppm in the polyester, and the content of aklylene glycol group is 0.1～10wt%, and the content of soluble titanium element is 1～1000ppm, and antimony element content is below the 3ppm.
2. atmospheric cation dyeable polyester according to claim 1 is characterized in that: described poly-alkylene glycol is a polyoxyethylene glycol.
3. atmospheric cation dyeable polyester according to claim 1 and 2 is characterized in that: the fusing point of this polyester is 220～240 ℃, and the terminal carboxyl(group) content of polyester is that 30 equivalents/below the ton, the content of glycol ether is below the 2.0wt% in the polyester.
4. the production method of the said atmospheric cation dyeable polyester of claim 1, comprise esterification and polycondensation, it is characterized in that: the dimethyl isophthalate with metal sulfonate salt group added in the esterification stage, and poly-alkylene glycol added in the polycondensation stage.
5. according to the production method of the said atmospheric cation dyeable polyester of claim 4, it is characterized in that: the addition of polyalkylene glycol is 0.1～10wt% with respect to weight polyester.
6. according to the production method of the said atmospheric cation dyeable polyester of claim 4, it is characterized in that: the addition with dimethyl isophthalate of metal sulfonate salt group is 0.1～10wt% with respect to weight polyester.
7. according to the production method of each said atmospheric cation dyeable polyester of claim 4～6, it is characterized in that: in esterification or polycondensation, also add and contain the potassium element compound, contain in elemental lithium compound or the organic amine compound one or more as basic catalyst, and the interpolation total amount of basic catalyst is 10ppm～5000ppm with respect to the polyester total amount.
8. the application of the said atmospheric cation dyeable polyester of claim 1 in preparation atmospheric cation dye capable of dyeing fiber.
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| CN201010192656XA CN102260373A (en) | 2010-05-25 | 2010-05-25 | Normal pressure cationic dye dyeable polyester, production method thereof, and purpose thereof |
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| CN201010192656XA CN102260373A (en) | 2010-05-25 | 2010-05-25 | Normal pressure cationic dye dyeable polyester, production method thereof, and purpose thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626980A (en) * | 2012-08-23 | 2014-03-12 | 东丽纤维研究所（中国）有限公司 | Alkali-soluble copolyester, preparation method and applications thereof |
| CN103833994A (en) * | 2012-11-22 | 2014-06-04 | 东丽纤维研究所（中国）有限公司 | Alkali-soluble copolyester and its production method and use |
| CN112442757A (en) * | 2019-08-27 | 2021-03-05 | 东丽纤维研究所（中国）有限公司 | High-whiteness polyester fiber |
| CN113024786A (en) * | 2021-03-17 | 2021-06-25 | 浙江恒逸石化有限公司 | Preparation method of antimony-free high-pressure cation dyeable polyester |
-
2010
- 2010-05-25 CN CN201010192656XA patent/CN102260373A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626980A (en) * | 2012-08-23 | 2014-03-12 | 东丽纤维研究所（中国）有限公司 | Alkali-soluble copolyester, preparation method and applications thereof |
| CN103833994A (en) * | 2012-11-22 | 2014-06-04 | 东丽纤维研究所（中国）有限公司 | Alkali-soluble copolyester and its production method and use |
| CN103833994B (en) * | 2012-11-22 | 2016-12-28 | 东丽纤维研究所（中国）有限公司 | A kind of alkali soluble copolymer polyester and its production and use |
| CN112442757A (en) * | 2019-08-27 | 2021-03-05 | 东丽纤维研究所（中国）有限公司 | High-whiteness polyester fiber |
| CN113024786A (en) * | 2021-03-17 | 2021-06-25 | 浙江恒逸石化有限公司 | Preparation method of antimony-free high-pressure cation dyeable polyester |
| CN113024786B (en) * | 2021-03-17 | 2022-09-09 | 浙江恒逸石化有限公司 | Preparation method of antimony-free high-pressure cation dyeable polyester |
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Application publication date: 20111130 |