CN105986482A - Anti-wrinkle finishing agent for cotton fabrics, and preparation method and application thereof - Google Patents
Anti-wrinkle finishing agent for cotton fabrics, and preparation method and application thereof Download PDFInfo
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- CN105986482A CN105986482A CN201510040494.0A CN201510040494A CN105986482A CN 105986482 A CN105986482 A CN 105986482A CN 201510040494 A CN201510040494 A CN 201510040494A CN 105986482 A CN105986482 A CN 105986482A
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- finishing agent
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Abstract
The invention discloses an anti-wrinkle finishing agent for cotton fabrics, and a preparation method and an application thereof. The anti-wrinkle finishing agent is aqueous polyurethane which is formed by polymerizing the unit represented in the chemical structural formula (I). The preparation method includes the steps of polymerizing a polyether flexible chain segment with excessive isophorone diisocyanate, and terminating excessive isocyanate groups to prepare the terminated aqueous polyurethane. The anti-wrinkle finishing agent has very good effects on the cotton fabrics and effectively solves the problems that an anti-wrinkle finishing agent in the prior art releases formaldehyde, reduces strength of the fabrics and yellows the fabrics, and furthermore, the cotton fabric is improved in washability.
Description
Technical field
The present invention relates to preparation and the application of finishing agent, particularly to a kind of cotton fabric crease-shedding finishing agent and its preparation method and application.
Background technology
During fabric generation wrinkle, owing to external force makes fiber bending deform, can not restore to the original state completely after loosening, in the place that lateral order degree is low, macromolecular alignment is irregular, and when standing External Force Acting as washed or wearing, the hydrogen bond in region deforms upon, and with the different fractures that keys occur of HYDROGEN BOND INTENSITY and the Relative sliding of fundamental structural unit, and new hydrogen bond can be produced on new position.After external force is removed, system occurs compacted property to reply, and when external force is big, the time is long, the resistance that the hydrogen bond being newly formed produces, more than restoring force, causes system deformation not recover, thus results in permanent deformation, and this is the reason that fabric pincher is formed.
Along with improving constantly and the quickening of daily life work rhythm of people's level of consumption, solve the problem that creases easily of bafta as early as possible, it is allowed to that there is durable anti-wrinkle effect, does not the most damage the strength of fabric, it has also become the important topic of textile research field in the world simultaneously.
Current industrialization anti-crease finishing technique, most widely used crease-shedding finishing agent is N-methylol class finishing agent, and its wrinkle-proof effect is good but there is the problem of Form aldehyde release, declines aggravation with raising and the improvement of wrinkle resistance in fabrics, strength and wearability simultaneously.The multi-carboxylic acid that develops in recent years, acetals, epoxy resin crease-shedding finishing agent, though solving Formaldehyde, but finishing effect is not as N-methylol class finishing agent, and the existence cross-linked due to a large amount of rigidity, cause stress to concentrate, cause fabric strength to lose seriously and with yellowing phenomenon.
Summary of the invention
In order to solve traditional crease-shedding finishing agent release formaldehyde, fabric strength is caused to reduce and the problem such as yellowing, fabric washability be the best, the invention provides a kind of cotton fabric crease-shedding finishing agent, this finishing agent is the isophorone diisocyanate of polyether soft segments with excess to be polymerized, again by excess isocyanate-terminated, the aqueous polyurethane of the end-sealed type of preparation.
The cotton fabric crease-shedding finishing agent of the present invention, the aqueous polyurethane for being polymerized by the unit of following chemical structural formula:
。
As priority scheme, above-mentioned cotton fabric crease-shedding finishing agent, the molecular weight of aqueous polyurethane is 2000 ~ 10000.
The present invention also provides for the preparation method of above-mentioned cotton fabric crease-shedding finishing agent, and step is:
(1) synthesis Waterborne Polyurethane Prepolymer: at 60 ~ 100 DEG C; after 25 ~ 40g polyethers and 3 ~ 4g water solublity chain extension component dihydromethyl propionic acid are dehydrated; add 15 ~ 20g isophorone diisocyanate and 0.1 ~ 0.2g catalyst; stir; it is warming up to 80 ~ 100 DEG C, the lower reaction 3 ~ 5h of nitrogen protection；
(2) end-blocking of Waterborne Polyurethane Prepolymer: at 20 ~ 40 DEG C, by 3 ~ 4.5g end-capping reagent NaHSO3, 0.5 ~ 1g accelerant N a2SO3Join in above-mentioned Waterborne Polyurethane Prepolymer with 4 ~ 5mL ethanol, add 3 ~ 4mL triethylamine and neutralize, add 100 ~ 150 mL deionized water dispersions after reacting 0.5 h under strong stirring, after 0.5 ~ 1 h, obtain 20 ~ 60% NaHSO3The aqueous polyurethane solution of the transparent and stable of end-blocking.
As priority scheme, in the preparation method of above-mentioned cotton fabric crease-shedding finishing agent, in step (1), polyethers is polyether Glycols, and its molecular weight is 1000 ~ 3000(number-average molecular weight), first 60 ~ 70 DEG C of reactions, it is warming up to 90 ~ 100 DEG C the most again.
As priority scheme, in the preparation method of above-mentioned cotton fabric crease-shedding finishing agent, in step (1), the hydroxyl in isophorone diisocyanate and the amount of the material of hydroxyl in polyethers and dihydromethyl propionic acid are than for 1.7:1 ~ 1.9:1.
As priority scheme, in the preparation method of above-mentioned cotton fabric crease-shedding finishing agent, in step (1), catalyst is polyamine or organotin.
As priority scheme, in the preparation method of above-mentioned cotton fabric crease-shedding finishing agent, in step (1), catalyst is dibutyl tin laurate.
As priority scheme, in the preparation method of above-mentioned cotton fabric crease-shedding finishing agent, in step (2), the mass percent of end-capping reagent, accelerator, ethanol, triethylamine and water is: end-capping reagent 1 ~ 1.5%, accelerator 0.2 ~ 0.5%, ethanol 1 ~ 2%, triethylamine 1.1 ~ 1.3%, water 40 ~ 80%.
The present invention also provides for a kind of cotton fabric crease-shedding method for sorting, it is bafta to be put in two leachings two in above-mentioned cotton fabric crease-shedding finishing agent aqueous solution roll, liquid carrying rate 70% ~ 90%, content 100g/L, the most respectively in pin pincers chain type heat setting machine 130 ~ 160 DEG C of preliminary dryings, bake 1 ~ 3min.
As priority scheme, above-mentioned cotton fabric crease-shedding method for sorting, described bafta is cotton muslin or cotton khaki.
Beneficial effects of the present invention:
The cotton fabric crease-shedding finishing agent of the present invention is aqueous polyurethane, for liquid form, NCO (NCO) content is zero, have good stability, can deposit half a year more than, preparation method is simple, low cost, solve traditional crease-shedding finishing agent release formaldehyde, cause fabric strength to reduce, the problem of yellowing, improve the washability of bafta.
The present invention utilizes isophorone diisocyanate to prepare a kind of novel crease-shedding finishing agent; also with polyethers in this finishing agent molecular structure; molecule two ends are water miscible poly-carbamyl sodium sulfonates; add thermal deblocking; slough end-capping reagent; isocyanates therein is appeared again and the amino in fiber macromole and hydroxyl reaction form cross-linked network, gives fabric with crease-resistant and elastic；Simultaneously possibly together with hydrophilic component dihydromethyl propionic acid in molecule, making polyurethane have hydrophilic, the triethylamine in molecule is used for neutralizing dihydromethyl propionic acid.
The present invention is according to cotton fabric crease-shedding principle, use waterborne blocked polyurethane that bafta is carried out anti-crease finishing, solve traditional crease-shedding finishing agent release formaldehyde, problem that strength reduces, thus improve the deficiency of the loss of the fabric strength after arrangement, aliphatic diisocyanate is used to improve the yellowing problems of fabric after arrangement, covalent cross-linking between waterborne blocked polyurethane and cotton fiber macromole, and the reticulated film in fiber surface formation, the washability making the bafta after process improves, and imparts the durable anti-wrinkle effect that bafta is excellent.Beneficial effect:
(1) aqueous polyurethane of gained has good stability, and can deposit half a year more than；
(2) preparation method of the present invention is simple, and low cost, environmentally safe, safety is good；
(3) solve traditional crease-shedding finishing agent release formaldehyde, cause fabric strength to reduce, the problem of yellowing, improve the washability of bafta.
Accompanying drawing explanation
Fig. 1 is the infrared spectrogram of waterborne blocked polyurethane.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
Embodiment 1
(1) preparation of Waterborne Polyurethane Prepolymer:
At 60 DEG C; 16.7g isophorone diisocyanate and 0.1g catalyst dibutyltin dilaurylate is added after 39g polyether Glycols (molecular weight 2000) and 3.4g water solublity chain extension component dihydromethyl propionic acid being dehydrated; stir; it is warming up to 95 DEG C; nitrogen is protected; after reacting 4 hours, obtain Waterborne Polyurethane Prepolymer.
(2) preparation of waterborne blocked polyurethane:
At 20 DEG C, by 3.2g end-capping reagent NaHSO3 0.7g accelerant N a2SO3Join in above-mentioned Waterborne Polyurethane Prepolymer with 4.5mL ethanol, add 3.2mL triethylamine and neutralize, after reacting 0.5 hour, under strong stirring, add deionized water 150g dispersion, after 0.5 hour, obtain the aqueous polyurethane solution of sodium sulfite end-blocking transparent and stable.
(3) anti-crease finishing:
Two leachings in above-mentioned dressing liquid of cotton muslin two being rolled, liquid carrying rate 80 ~ 90%, content 100g/L, then 90 DEG C of preliminary dryings 3 minutes in pin pincers chain type heat setting machine, 160 DEG C bake 3 minutes.
(4) anti-wrinkle effect test:
With reference to crease recovery of fabrics: reply horn cupping (AATCC66-1998) testing standard and method, after testing, fabric elasticity creasy recovery angle improves more than 30 °, and ultimate strength and the equal not damaged of tearing brute force, whiteness does not reduces.
Embodiment 2
(1) preparation of Waterborne Polyurethane Prepolymer: at 60 DEG C; 19.9g isophorone diisocyanate and 0.1g catalyst dibutyltin dilaurylate is added after 27.5g polyether Glycols (molecular weight 1000) and 3.15g water solublity chain extension component dihydromethyl propionic acid being dehydrated; stir; it is warming up to 95 DEG C; nitrogen is protected; after reacting 4 hours, obtain Waterborne Polyurethane Prepolymer.
(2) preparation of waterborne blocked polyurethane:
At 20 DEG C, by 4.1g end-capping reagent NaHSO30.9g accelerant N a2SO3Join in above-mentioned Waterborne Polyurethane Prepolymer with 4mL ethanol, add 3.4mL triethylamine and neutralize, after reacting 0.5 hour, under strong stirring, add deionized water 130g dispersion, after 0.5 hour, obtain the aqueous polyurethane solution of sodium sulfite end-blocking transparent and stable.
(3) anti-crease finishing:
Two leachings in above-mentioned dressing liquid of cotton khaki two being rolled, liquid carrying rate 80 ~ 90%, content 100g/L, then 90 DEG C of preliminary dryings 3 minutes in pin pincers chain type heat setting machine, 160 DEG C bake 3 minutes.
(4) anti-wrinkle effect test:
With reference to crease recovery of fabrics: reply horn cupping (AATCC66-1998) testing standard and method, after testing, fabric elasticity creasy recovery angle improves more than 30 °, and ultimate strength and the equal not damaged of tearing brute force, whiteness does not reduces.
Claims (10)
1. a cotton fabric crease-shedding finishing agent, it is characterised in that the aqueous polyurethane for being polymerized by the unit of following chemical structural formula:
。
Cotton fabric crease-shedding finishing agent the most according to claim 1, it is characterised in that the molecular weight of aqueous polyurethane is 2000 ~ 10000.
3. the preparation method of the cotton fabric crease-shedding finishing agent described in claim 1 or 2, it is characterised in that step is:
(1) synthesis Waterborne Polyurethane Prepolymer: at 60 ~ 100 DEG C; after 25 ~ 40g polyethers and 3 ~ 4g water solublity chain extension component dihydromethyl propionic acid are dehydrated; add 15 ~ 20g isophorone diisocyanate and 0.1 ~ 0.2 g catalyst; stir; it is warming up to 80 ~ 100 DEG C, the lower reaction 3 ~ 5h of nitrogen protection；
(2) end-blocking of Waterborne Polyurethane Prepolymer: at 20 ~ 40 DEG C, by 3 ~ 4.5 g end-capping reagent NaHSO3, 0.5 ~ 1g accelerant N a2SO3Join in above-mentioned Waterborne Polyurethane Prepolymer with 4 ~ 5mL ethanol, add 3 ~ 4 mL triethylamines and neutralize, after reacting 0.5 h, under strong stirring, add 100 ~ 150
ML deionized water disperses, and after 0.5 ~ 1 h, obtains 20 ~ 60% NaHSO3The aqueous polyurethane solution of the transparent and stable of end-blocking.
The preparation method of cotton fabric crease-shedding finishing agent the most according to claim 3, it is characterised in that in step (1), polyethers is polyether Glycols, its molecular weight is 1000 ~ 3000, first 60 ~ 70 DEG C of reactions, is warming up to 90 ~ 100 DEG C the most again.
The preparation method of cotton fabric crease-shedding finishing agent the most according to claim 4, it is characterised in that in step (1), the hydroxyl in isophorone diisocyanate is 1.7 with the amount ratio of the material of hydroxyl in polyethers and dihydromethyl propionic acid:
1~1.9: 1。
The preparation method of cotton fabric crease-shedding finishing agent the most according to claim 3, it is characterised in that in step (1), catalyst is polyamine or organotin.
The preparation method of cotton fabric crease-shedding finishing agent the most according to claim 6, it is characterised in that in step (1), catalyst is dibutyl tin laurate.
The preparation method of cotton fabric crease-shedding finishing agent the most according to claim 3, it is characterized in that, in step (2), the mass percent of end-capping reagent, accelerator, ethanol, triethylamine and water is: end-capping reagent 1 ~ 1.5%, accelerator 0.2 ~ 0.5%, ethanol 1 ~ 2%, triethylamine 1.1 ~ 1.3%, water 40 ~ 80%.
9. a cotton fabric crease-shedding method for sorting, it is characterized in that, bafta is put in two leachings two in the cotton fabric crease-shedding finishing agent aqueous solution described in claim 1 or 2 and rolls, liquid carrying rate 70% ~ 90%, content 100g/L, the most respectively in pin pincers chain type heat setting machine 130 ~ 160 DEG C of preliminary dryings, bake 1 ~ 3min.
Cotton fabric crease-shedding method for sorting the most according to claim 9, it is characterised in that described bafta is cotton muslin or cotton khaki.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510040494.0A CN105986482A (en) | 2015-01-27 | 2015-01-27 | Anti-wrinkle finishing agent for cotton fabrics, and preparation method and application thereof |
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| CN201510040494.0A CN105986482A (en) | 2015-01-27 | 2015-01-27 | Anti-wrinkle finishing agent for cotton fabrics, and preparation method and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547152A (en) * | 2018-04-27 | 2018-09-18 | 东华大学 | The preparation method of the easy decontamination flexibility cotton textile of wash resistant moisturizing |
| CN108547153A (en) * | 2018-04-27 | 2018-09-18 | 东华大学 | The preparation method of wash resistant moisturizing easy-to-clean textile finishing agent and application |
| CN109503807A (en) * | 2018-11-15 | 2019-03-22 | 广东菲安妮皮具股份有限公司 | A kind of preparation method of luggage fabric color inhibition agent |
| CN111040116A (en) * | 2019-12-31 | 2020-04-21 | 鲁泰纺织股份有限公司 | Preparation method of environment-friendly end-sealing waterborne polyurethane and application of environment-friendly end-sealing waterborne polyurethane in crease resistance of fabric |
| CN112853752A (en) * | 2021-02-09 | 2021-05-28 | 鲁泰纺织股份有限公司 | Preparation method of delayed baking non-ironing finishing liquid for cotton fabric, product and application of finishing liquid |
-
2015
- 2015-01-27 CN CN201510040494.0A patent/CN105986482A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547152A (en) * | 2018-04-27 | 2018-09-18 | 东华大学 | The preparation method of the easy decontamination flexibility cotton textile of wash resistant moisturizing |
| CN108547153A (en) * | 2018-04-27 | 2018-09-18 | 东华大学 | The preparation method of wash resistant moisturizing easy-to-clean textile finishing agent and application |
| CN108547152B (en) * | 2018-04-27 | 2021-07-09 | 东华大学 | Preparation method of washing-resistant, moisturizing and soil-release soft all-cotton textile |
| CN108547153B (en) * | 2018-04-27 | 2021-07-09 | 东华大学 | Preparation method and application of washing-resistant, moisturizing and soil-release textile finishing agent |
| CN109503807A (en) * | 2018-11-15 | 2019-03-22 | 广东菲安妮皮具股份有限公司 | A kind of preparation method of luggage fabric color inhibition agent |
| CN111040116A (en) * | 2019-12-31 | 2020-04-21 | 鲁泰纺织股份有限公司 | Preparation method of environment-friendly end-sealing waterborne polyurethane and application of environment-friendly end-sealing waterborne polyurethane in crease resistance of fabric |
| CN112853752A (en) * | 2021-02-09 | 2021-05-28 | 鲁泰纺织股份有限公司 | Preparation method of delayed baking non-ironing finishing liquid for cotton fabric, product and application of finishing liquid |
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Application publication date: 20161005 |