CN107075149A - The manufacture method of water absorbent polymer piece - Google Patents
The manufacture method of water absorbent polymer piece Download PDFInfo
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- CN107075149A CN107075149A CN201580053246.8A CN201580053246A CN107075149A CN 107075149 A CN107075149 A CN 107075149A CN 201580053246 A CN201580053246 A CN 201580053246A CN 107075149 A CN107075149 A CN 107075149A
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- Prior art keywords
- resin composition
- photocurable resin
- absorbent polymer
- water absorbent
- methyl
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/60—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing nitrogen in addition to the carbonamido nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
Abstract
There is following process in the method that volume to volume mode manufactures mist degree as less than 8% water absorbent polymer piece：The amount of moisture of the Photocurable resin composition of (methyl) acrylamide quaternary ammonium salt monomer containing formula (1) is adjusted to 5~40 mass % process, by the way that the Photocurable resin composition is coated on from rolling out on the support chip that roller is drawn so as to form the process of aqueous light solidified membrane, by making it carry out photocuring so as to the process for forming the process of water absorbent polymer piece, being wound up into the piece in take-up roll to the aqueous light solidified membrane irradiation ultraviolet radiation.CH2=C (R1)CON(R2)‑A‑N+(R3)(R4)(R5)·X-(1) in formula, R1 and R2 are each independently hydrogen atom or low alkyl group.R3 and R4 is low alkyl group, and R5 is low alkyl group, low-grade alkenyl or benzyl, and A is low-grade alkylidene, X-For halide anion or perchloric acid anion.
Description
Technical field
The present invention relates to the manufacture method of water absorbent polymer piece.
Background technology
It is used as the water imbibition piece of paper diaper, the pet urine pad for requiring high-hydroscopicity etc., it is proposed that third is scattered with base material
Olefin(e) acid salt based polymer particle simultaneously combines the water imbibition piece (patent document 1) that material is fixed with coated.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 11-170414 publications
The content of the invention
Invent problem to be solved
But, as the new purposes of water imbibition piece, consider to be applied to window-glass, transparent display, in the feelings
Under condition, as practical transparency, mist degree, which is no more than 8%, to be required to water imbibition piece.Even if however, conventional water imbibition piece is used
Transparent material is as base material, coated bonding agent, because acrylates based polymer particle has the phase compared with luminous ray wavelength
To big particle diameter, thus have the profile seen gonorrhoea or see polymer, it is impossible to obtain asking as the desired transparency
Topic.
In addition, conventional water imbibition piece is according to the synthesis procedure of acrylates based polymer, particlized process, piece chemical industry
Separate multiple processes such as sequence are made, and the photo-curable tree containing acrylate monomers can not substantially be utilized by also existing
Oil/fat composition manufactures the problem of water absorbent polymer piece is such in volume to volume (Roll-to-Roll) mode.
It is an object of the present invention to the problem of solving the conventional art of the above, enabling manufactured in volume to volume mode
There is the water absorbent polymer piece of high transparency before and after water suction.
Method for solving problem
The inventors discovered that：In the light-cured resin of (methyl) acrylamide quaternary ammonium salt monomer containing specific structure
Deliberately containing the removed water generally in the photocuring reaction of Photocurable resin composition in composition, by using thus
Obtained aqueous Photocurable resin composition, can be manufactured with good water imbibition and mist degree in volume to volume mode below 8%
Excellent transparency water absorbent polymer piece so that complete the present invention.
That is, the present invention provides a kind of manufacture method, and it is to manufacture mist degree in volume to volume mode as less than 8% water imbibition to gather
The method of compound piece, has：
The amount of moisture adjustment process of Photocurable resin composition, will contain (methyl) acrylamide quaternary ammonium of formula (1)
The amount of moisture of the Photocurable resin composition of salt monomer is adjusted to 5~40 mass %,
Aqueous light solidified membrane formation process, by by the Photocurable resin composition that have adjusted amount of moisture be coated on from
Roll out on the support chip of roller extraction to form aqueous light solidified membrane,
Ultraviolet irradiation process, by making it carry out photocuring to aqueous light solidified membrane irradiation ultraviolet radiation, so that
Water absorbent polymer piece is formed on support chip, and
Water absorbent polymer piece rolling step, by water absorbent polymer piece together with support chip in take-up roll.
CH2=C (R1)CON(R2)-A-N+(R3)(R4)(R5)·X- (1)
In formula, R1 and R2 are each independently hydrogen atom or low alkyl group.R3 and R4 is low alkyl group, and R5 is lower alkyl
Base, low-grade alkenyl or benzyl, A are low-grade alkylidene, X-For halide anion or perchloric acid anion.
The effect of invention
The present invention water absorbent polymer piece manufacture method in, by amount of moisture be adjusted to 5~40 mass %, contain formula
(1) Photocurable resin composition of (methyl) acrylamide quaternary ammonium salt monomer is applied to volume to volume mode.Therefore, it is possible to
The good water imbibition of manufacture display and the good transparency of display, specifically show the water-absorbent polymeric of less than 8% mist degree
Thing piece.
Embodiment
The present invention is manufactures method of the mist degree as less than 8% water absorbent polymer piece in volume to volume mode, with as follows
Process：" the amount of moisture adjustment process of Photocurable resin composition ", " aqueous light solidified membrane formation process ", " ultraviolet photograph
Penetrate process ", " water absorbent polymer piece rolling step ".Hereinafter, each process is described in detail.It should be noted that this
In the manufacture method of invention, the piece manufacture device of known volume to volume mode can be applicable (for example, in Japanese Unexamined Patent Publication 2001-
Piece manufacture device disclosed in No. 89719 Fig. 5 or Fig. 8).
The amount of moisture adjustment process ＞ of ＜ Photocurable resin compositions
In the manufacture method of the water absorbent polymer piece of the present invention, first, (methyl) acrylamide of formula (1) will be contained
The amount of moisture of the Photocurable resin composition of quaternary ammonium salt monomer is adjusted to 5~40 mass %.It is used as adjustment light-cured resin
The specific method of the amount of moisture of composition, it is contemplated that the amount of moisture contained by each composition joined together, can be by resin group
Added water in compound, or add anhydrous monomer, oligomer or polymer on the contrary to be adjusted.It should be noted that coordinating
Amount of moisture contained by composition script is in the case of in the range of 5~40 mass %, it would however also be possible to employ be purposely added without water, nothing
Passive method of adjustment as water thing.
Amount of moisture in Photocurable resin composition is set to 5~40 mass %, is preferably set to 10~30 mass %'s
Reason is as follows：If in the scope, glass transition temperature (Tg) can be provided even in use harder for 100 DEG C or so
When the acrylamide monomer of the polymer of matter, hydrophilic monomer are as monomer, the photocuring film after photocuring can also be assigned
Flexibility is given, as a result water absorbent polymer piece can be manufactured in volume to volume mode.Glued furthermore it is possible to be adjusted to appropriate surface
Property.It should be noted that in the present invention, the implication of " (methyl) acryloyl " comprising acryloyl and methacryl both sides.
The measure of amount of moisture in Photocurable resin composition, is determined in the modulation of the resin combination, but
After polymer sheet is made, it can be carried out by method known to loss on drying etc..
(Photocurable resin composition)
Photocurable resin composition contains (methyl) acrylamide quaternary ammonium salt monomer of formula (1).In order to polymer
Piece realizes high-hydroscopicity, the content of (methyl) acrylamide quaternary ammonium salt monomer of formula (1) in Photocurable resin composition
It is preferably regulated as more than 7.5 mass %, is more preferably adjusted to more than 15 mass %.
(methyl) acrylamide quaternary ammonium salt monomer contribute to water absorbent polymer piece of the present invention show high-hydroscopicity,
The composition for the surface viscosity for suppressing and adjusting the polymer sheet for maintaining saturation state is additionally helped, is with formula (1)
The monomer of structure.
CH2=C (R1)CON(R2)-A-N+(R3)(R4)(R5)·X- (1)
In formula (1), R1 and R2 are each independently hydrogen atom or low alkyl group.R3 and R4 is low alkyl group, and R5 is rudimentary
Alkyl, low-grade alkenyl or benzyl, A are low-grade alkylidene, X-For halide anion or perchloric acid anion.In these substituents,
As low alkyl group, methyl, ethyl, propyl group, isopropyl, butyl, isobutyl group, sec-butyl, the tert-butyl group, amyl group, hexyl can be enumerated
Deng, wherein, preferred methyl.As low-grade alkenyl, vinyl, 1 or 2- acrylic, 1,2 or 3- cyclobutenyls, 1,2,3 or 4 can be enumerated
Pentenyl, 1,2,3,4,5- hexenyls etc..As low-grade alkylidene, methylene, ethylidene, propylidene, butylidene, Asia can be enumerated
Amyl group, hexylidene etc..As halide anion, cl anion, bromine anions, iodine anion etc. can be enumerated.
It is preferred that R1 be hydrogen atom, preferred R2 is methyl, and R3, R4 and R5 preferably are methyl, and A preferably is Asia third
Base, X preferably-For cl anion.
On the other hand, as (methyl) acrylamide quaternary ammonium salt monomer cation portion concrete example, propylene can be enumerated
Acyl group aminomethyl trimethyl ammonium, acryloyl group aminomethyl triethyl ammonium, acryloyl group aminomethyl tripropyl ammonium, acryloyl group ammonia second
Base trimethyl ammonium, acryloyl group propyl ammonium, acryloyl group aminopropyltriethoxy diethyl ammonium, acryloyl group aminopropyl second
Base Dimethyl Ammonium, acryloyl group aminopropyltriethoxy dipropylammonium, acryloyl group aminopropyl triethyl ammonium, acryloyl group aminopropyl three
Propyl ammonium, acryloyl group aminoethyl dimethyl benzyl ammonium, acryloyl group aminopropyl dimethyl benzyl ammonium, acryloyl group aminopropyl two
The acrylamide quaternary ammonium cation such as Ethylbenzyl ammonium.Wherein, from the aspect of the easy raw material of industry for obtaining low price, preferably
Acryloyl group propyl ammonium, acryloyl group aminopropyl dimethyl benzyl ammonium.Particularly preferably acryloyl group aminopropyl
Trimethyl ammonium.
Therefore, as (methyl) acrylamide quaternary ammonium salt monomer of preferred formula (1), acryloyl group aminopropyl can be enumerated
Trimethyl ammonium chloride, in other words, dimethylaminopropyl acrylamide chloromethanes salt.
(hydrophilic monomer)
Photocurable resin composition can further contain hydrophilic monomer.Hydrophilic monomer is preferably simple function list
Body, is used to control sheet material hardness, surface viscosity and the water imbibition of water absorbent polymer piece.Here, hydrophily list
Body refers to the monomer of the monomer with electric charge or the high substituent containing polarized in the present invention.From solubility parameter (SP values)
Viewpoint is set out, and refers to that SP values show more than 19 monomer.
As the concrete example of hydrophilic monomer, vinyl alcohol, vinyl acetate, (methyl) acrylic acid, (methyl) third can be enumerated
Olefin(e) acid ester, (methyl) acrylamide etc..For these hydrophilic monomers, hydroxyl, carboxyl, polyether-based etc. can be combined with as needed
Hydrophilic radical.Wherein, hydroxyethyl acrylamide, acrylic acid are preferably enumerated.Made using hydroxyethyl acrylamide or acrylic acid
During for hydrophilic monomer, obtained from aqueous resin compositions photocuring can be made to decrease, the water suction of saturation state is maintained
The piece characteristic of the surface viscosity of property polymer sheet etc. is adjusted.Thus, by suitably adjusting Photocurable resin composition
Amount of moisture and (methyl) acrylamide quaternary ammonium salt monomer amount, the species of hydrophilic monomer and amount, so as to provide control
The water absorbent polymer piece of volume to volume production adaptability, water imbibition, surface viscosity etc..
Content of the hydrophilic monomer in Photocurable resin composition, relative to (methyl) acrylamide of formula (1)
The mass parts of quaternary ammonium salt monomer 100 are preferably 10~500 mass parts, more preferably 20~350 mass parts.If the scope, then
Good water imbibition can be assigned to water absorbent polymer piece, and can be produced in volume to volume mode.
(multifunctional (methyl) acrylate monomer)
Photocurable resin composition can be further containing multifunctional (methyl) third played a role as crosslinking agent
Olefin(e) acid ester monomer.
As the concrete example of such multifunctional (methyl) acrylate monomer, can enumerate polypropyleneglycol diacrylate,
Polyethyleneglycol diacrylate, dipentaerythritol acrylate etc..
Content of multifunctional (methyl) acrylate monomer in Photocurable resin composition the, relative to (first of formula (1)
Base) acrylamide quaternary ammonium salt monomer 100 mass parts be preferably 0.01~5.0 mass parts, more preferably 0.1~2.5 mass parts.
If the scope, then water absorbent polymer piece can be made to show good water-insoluble and water imbibition.
(optical free radical polymerization initiator)
In Photocurable resin composition, it can further contain Photoepolymerizationinitiater initiater, it is particularly possible to contain optical free radical
Polymerization initiator, transparent water absorbent polymer piece is obtained by enabling it to carry out photocuring reaction.As such light certainly
By base polymerization initiator, known optical free radical polymerization initiator can be used, for example, benzoin, benzoin methylether, benzoin second
The benzoin class such as ether, benzoin iso-propylether, benzoin isobutyl ether, methyl phenyl ethers anisole methyl ether, 4- (2- hydroxyl-oxethyls) phenyl (2- hydroxyls
Base -2- propyl group) ketone (Darocur 2959；BASF Japan (strain) system), Alpha-hydroxy-α, α '-dimethyl acetophenone (Darocur
1173；BASF Japan (strain) system), methoxyacetophenone, 2,2'- dimethoxy -2- phenyl acetophenones (Irgacure 651；
BASF Japan (strain) system), 2- hydroxyl -2- cyclohexyl benzenes ethyl ketones (Irgacure 184；BASF Japan (strain) system), 2,2- bis-
Acetophenone, 2,2- dimethoxy -2- phenyl acetophenones, 1- hydroxycyclohexylphenylketones, 4- phenoxydichloroacetophenones,
The acetophenones such as the 4- tert-butyl groups-dichloroacetophenone, 2- hydroxy-2-methyls propiophenone, 2- hydroxyl -4'- isopropyl -2- methylbenzenes third
The phenylpropyl alcohol ketone class such as ketone, benzophenone, methyl benzophenone, p-dichlorobenzene ketone, to benzophenone such as dimethylamino benzopheones
Class, thioxanthones, CTX, 2- ethyls thioxanthones, ITX, the clopenthixal ketones of 2,4- bis-, 2,4- diethyl thiophenes
The thioxanthene ketone class, double (2,4,6- trimethylbenzoyl)-benzene such as ton ketone, 2,4- diisopropylthioxanthones, dodecyl thioxanthones
Base phosphine oxide, TMDPO, double (2,4,6- trimethylbenzoyl) -2,4- bis--just
The acyl group oxygen such as butoxy phenyl phosphine oxide, double (2,6- Dimethoxybenzoyls) -2,4,4- tri-methyl-amyl phenyl phosphine oxides
Change phosphine, benzil, Dibenzosuberone, α-acyl group oxime ester etc..
Content of the Photoepolymerizationinitiater initiater in Photocurable resin composition, relative to (methyl) acrylamide of formula (1)
It is that the mass parts of quaternary ammonium salt monomer 100 are preferably 0.01~5.0 mass parts, more preferably 0.1~2.5 mass parts.If the model
Enclose, then can not excessively be reacted and just obtain sufficient photoreactivity, the transparent water-absorbent polymeric of target can be obtained
Thing piece.
(other compositions)
Photocurable resin composition can contain transparent thermoplastic resin in the range of the effect of the present invention is not damaged
Fat, antioxidant, light stabilizer, polymerization inhibitor, silane coupler, dyestuff, water-soluble antimicrobial etc..It should be noted that light is solid
Preferably organic solvent is mismatched in the property changed resin combination.
For Photocurable resin composition, (methyl) acrylamide quaternary ammonium salt monomer of formula (1), and root can be contained
According to needing containing hydrophilic monomer, crosslinking agent, polymerization initiator, other compositions, preferably without organic solvent, profit can be passed through
Uniformly mix to modulate with known method.
The aqueous light solidified membrane formation process ＞ of ＜
By amount of moisture is adjusted to 5~40 mass % Photocurable resin composition be coated on from roll out roller draw
On support chip, so as to form aqueous light solidified membrane.As coating method, known method can be used, it is, for example, possible to use
Manufacture device with " coater unit " that can implement rolling process, stick coating method etc. is coated with.
As support chip, the known slide used as the support chip of water absorbent polymer piece can be applicable.
Here, the transmitance of the transparent light for referring to pass through required for water absorbent polymer piece is more than 8%.As such support chip,
The polyethylene terephthalate piece of such as lift-off processing or unstripped processing can preferably be enumerated.For the thickness of support chip
Degree, can suitably set according to the manufacturing condition of water absorbent polymer piece, application target.Such support chip, can also make
Peeled off as needed during with water absorbent polymer piece.Therefore, the feelings of support chip are peeled off when using water absorbent polymer piece
Under condition, as the support chip, low polypropylene non-woven pieces of cloth of photopermeability etc. can be applicable.
＜ ultraviolet irradiation process ＞
By making its photocuring to the aqueous light solidified membrane irradiation ultraviolet radiation being layered on support chip, so that in support
Water absorbent polymer piece is formed on piece.
Ultraviolet irradiation can be applicable known UV radiation technologies to carry out.For example, can be by being layered in stripping
From the aqueous light solidified membrane in the transparent polyethylene terephthalate film after processing (Photocurable resin composition
Film) irradiation chemical lamp, the light source such as the high-pressure sodium lamp ultraviolet launched carries out.It is used as an example of ultraviolet irradiation condition
Son, can enumerate following situation：With being adjusted to 0.5~1.5mW/cm2The chemical light irradiation ultraviolet of 5~10 minutes, then, use
High-pressure sodium lamp is with 1000~1500mJ/cm2Accumulated light be irradiated.
It should be noted that when ultraviolet irradiates, the transparent protective film for implementing lift-off processing can be made between aqueous
Between light solidified membrane and light source.By making transparent protective film between, so as to which aqueous light solidified membrane is greatly decreased
Amount of moisture variable quantity.
＜ water absorbent polymer piece rolling steps ＞
Then, water absorbent polymer piece and support chip are together wound up into take-up roll.Thus, it is possible to be wound into a roll
The water absorbent polymer piece of shape.
＜ water absorbent polymer pieces ＞
The water absorbent polymer piece so manufactured contains (methyl) acrylamide quaternary ammonium salt monomer unit and the parent of formula (1)
Aqueous monomers unit, shows good water imbibition and the transparency.Here, water imbibition refers to the 50 mass % for showing the deadweight of slice
Water absorption rate above.In addition, the transparency refers to that the mist degree determined according to JIS K7136 is less than 8%, preferably less than 5%.
So-formed water absorbent polymer piece, can remove it in the state of being supported by support chip, or by support chip
Afterwards, the affixed objects such as transparent display are attached at and are preferably used.
Embodiment
Hereinafter, by implementing to carry out more specific description to the present invention.
Embodiment 1~6, comparative example 1~6
(modulation of Photocurable resin composition)
The composition of the formula (mass parts) of table 1 is used into rotation blade stirrer (Three-one motor, new east science
(strain)) uniform mixing, modulate Photocurable resin composition.It should be noted that in the formula of table 1, (methyl) third of formula (1)
Acrylamide system quaternary ammonium salt monomer uses the dimethylaminopropyl acrylamide chloromethanes salt (KOHJIN that water content is 25 mass %
Film＆chemicals (strain)).
(manufacture of water absorbent polymer piece)
The branch that roller is rolled out is rolled out in the piece manufacture device from the coater unit with stick coating method and use volume to volume mode
In blade (polyethylene terephthalate film (38GS, Lin get Ke (strain)) of the lift-off processing of 38 μ m-thicks), above-mentioned painting is used
The Photocurable resin composition is coated into 200 μ m-thicks by cloth unit, forms aqueous photocurable layers.Stacking and support above
The polyethylene terephthalate film of the same lift-off processing of piece is used as screening glass.By being adjusted to 1mW/cm2Chemical lamp pair
Aqueous photo-curable layer irradiation ultraviolet radiation (dominant wavelength 352nm) 5 minutes, then by high voltage mercury lamp radiation ultraviolet (dominant wavelength
365nm) with cause accumulated light turn into 1000mJ/cm2, so as to carry out photocuring and water absorbent polymer piece is made.By gained
To water absorbent polymer piece and support chip be together wound up into the take-up roll of piece manufacture device.
＜ evaluates ＞
For " water imbibition " of resulting water absorbent polymer piece, as explained below to " water absorption rate " and " quick to inhale
It is aqueous " tested and evaluated.In addition, for " transparency ", it is as described below as determine mist degree and evaluated.In addition,
Evaluation is carried out as follows for volume to volume production adaptability.
(water absorption rate)
Water absorbent polymer piece is cut into 1cm square, after the polyethylene terephthalate film of lift-off processing is peeled off,
Impregnated 24 hours in Purified Water 30ml, (quality before dipping is set to the quality after W0, dipping to the film quality before and after measure dipping
It is set to W1), according to formula, " water absorption rate is obtained in water absorption rate (%)=[(W1-W0)/W0] × 100 ".In practicality, water absorption rate is wished
For more than 50%.
(quick water imbibition)
By commercially available spray bottle to water absorbent polymer piece surface spray Purified Water, visually observation is attached to the water on piece surface
Whether absorbed, evaluated according to following metewand by the water absorbent polymer piece.
Metewand
○：When after water spray by 10 seconds, the situation of water absorbent polymer piece surface wettability
×：When after water spray by 10 seconds, the nonwetting situation in water absorbent polymer piece surface
(transparency)
The mist degree of water absorbent polymer piece is determined according to JIS K7136, is evaluated according to following metewand.
Metewand
○：Mist degree is less than 8% situation
△：Mist degree is the situation more than 8% and less than 10%
×：Situation of the mist degree more than 10%
(volume to volume production adaptability)
Metewand
○：The feelings on 3 inches of paper tubes can be wound up into the case where curling, piece cracking do not occur for water absorbent polymer piece
Condition
△：It can be wound up on 3 inches of paper tubes, but water absorbent polymer piece produces the situation of curling
×：Water absorbent polymer piece is hard, and the situation of piece cracking is produced when being wound up into 3 inches of paper tubes
Table 1
As shown in Table 1, the water absorbent polymer piece of embodiment 1~6 is transparent excellent, and shows good water suction
Property.And volume to volume production adaptability is also excellent.Especially understand, by increasing and decreasing the hydroxyethyl acrylamide as hydrophilic monomer
The content of (embodiment 1~3) or acrylic acid (embodiment 5~6), so as to control the water absorption rate of water absorbent polymer piece.
And in contrast, the polymer of the comparative example 1~5 of (methyl) acrylamide quaternary ammonium monomer of formula (1) is not used
Piece, volume to volume production adaptability is poorer than the water absorbent polymer piece of embodiment 1~6.In addition, the polymer sheet of comparative example 6 although
(methyl) acrylamide quaternary ammonium monomer of formula (1) is not used, the water absorbent polymer piece with embodiment 1~5 is also showed that
Same volume to volume production adaptability, but gonorrhoea occurs for piece, and the transparency is poor.
Industrial applicability
The present invention water absorbent polymer piece manufacture method in, by amount of moisture be adjusted to 5~40 mass %, contain formula
(1) Photocurable resin composition of (methyl) acrylamide quaternary ammonium salt monomer is applied to volume to volume mode.Therefore, it is possible to
The water-absorbent polymeric of the good water imbibition of manufacture display and the good transparency of display, the specifically mist degree of display less than 8%
Thing piece.
Claims (8)
1. a kind of manufacture method, is to manufacture method of the mist degree as less than 8% water absorbent polymer piece in volume to volume mode, has
Following process：
The amount of moisture adjustment process of Photocurable resin composition, will contain (methyl) acrylamide quaternary ammonium salt list of formula (1)
The amount of moisture of the Photocurable resin composition of body is adjusted to 5~40 mass %,
Aqueous light solidified membrane formation process, by the way that the Photocurable resin composition that have adjusted amount of moisture is coated on from rolling out
So as to form aqueous light solidified membrane on the support chip that roller is drawn,
Ultraviolet irradiation process, by making it carry out photocuring so as on support chip to aqueous light solidified membrane irradiation ultraviolet radiation
Water absorbent polymer piece is formed, and
Water absorbent polymer piece rolling step, water absorbent polymer piece and support chip are together wound up into take-up roll,
CH2=C (R1)CON(R2)-A-N+(R3)(R4)(R5)·X- (1)
In formula, R1 and R2 are each independently hydrogen atom or low alkyl group, and R3 and R4 are low alkyl group, and R5 is low alkyl group, low
Level alkenyl or benzyl, A is low-grade alkylidene, X-For halide anion or perchloric acid anion.
2. manufacture method according to claim 1,10~30 matter are adjusted to by the amount of moisture of Photocurable resin composition
Measure %.
3. manufacture method according to claim 1 or 2, by (methyl) third of the formula (1) in Photocurable resin composition
The content of acrylamide system quaternary ammonium salt monomer is adjusted to more than 7.5 mass %.
4. according to manufacture method according to any one of claims 1 to 3, it is used as (methyl) acrylamide quaternary ammonium of formula (1)
Salt monomer, uses dimethylaminopropyl acrylamide chloromethanes salt.
5. according to manufacture method according to any one of claims 1 to 4, Photocurable resin composition is contained hydrophily list
Body.
6. manufacture method according to claim 5, hydrophilic monomer is used as using hydroxyethyl acrylamide or acrylic acid.
7. according to manufacture method according to any one of claims 1 to 6, further in Photocurable resin composition, make
It is used as (methyl) the acrylamide quaternary ammonium salt monomer of multifunctional (methyl) acrylate monomer relative to formula (1) of crosslinking agent
100 mass parts contain 0.01~5.0 mass parts.
8. according to manufacture method according to any one of claims 1 to 7, in Photocurable resin composition, make photopolymerization
Initiator contains 0.01~5.0 mass parts relative to the mass parts of (methyl) acrylamide quaternary ammonium salt monomer 100 of formula (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-210740 | 2014-10-15 | ||
| JP2014210740A JP6417843B2 (en) | 2014-10-15 | 2014-10-15 | Method for producing water-absorbing polymer sheet |
| PCT/JP2015/077740 WO2016059973A1 (en) | 2014-10-15 | 2015-09-30 | Method for producing water-absorbent polymer sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107075149A true CN107075149A (en) | 2017-08-18 |
| CN107075149B CN107075149B (en) | 2020-06-26 |
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| CN201580053246.8A Active CN107075149B (en) | 2014-10-15 | 2015-09-30 | Method for producing water-absorbent polymer sheet |
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|---|---|
| JP (1) | JP6417843B2 (en) |
| CN (1) | CN107075149B (en) |
| TW (1) | TWI686431B (en) |
| WO (1) | WO2016059973A1 (en) |
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| JP6828301B2 (en) * | 2016-08-16 | 2021-02-10 | デクセリアルズ株式会社 | Water-absorbent sheet |
| JP2018030308A (en) * | 2016-08-25 | 2018-03-01 | デクセリアルズ株式会社 | Method for producing hydrous water-absorbing sheet |
| KR102191462B1 (en) | 2017-08-22 | 2020-12-15 | 주식회사 엘지화학 | Preparation method for super absorbent polymer sheet and super absorbent polymer sheet prepared therefrom |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5501886A (en) * | 1993-07-19 | 1996-03-26 | Hoechst Aktiengesellschaft | Cellulose hydrate-based flat or tubular film |
| WO2014125942A1 (en) * | 2013-02-15 | 2014-08-21 | 富士フイルム株式会社 | Polymer functional film and method for producing same |
-
2014
- 2014-10-15 JP JP2014210740A patent/JP6417843B2/en active Active
-
2015
- 2015-09-30 WO PCT/JP2015/077740 patent/WO2016059973A1/en active Application Filing
- 2015-09-30 CN CN201580053246.8A patent/CN107075149B/en active Active
- 2015-10-07 TW TW104132985A patent/TWI686431B/en active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5501886A (en) * | 1993-07-19 | 1996-03-26 | Hoechst Aktiengesellschaft | Cellulose hydrate-based flat or tubular film |
| WO2014125942A1 (en) * | 2013-02-15 | 2014-08-21 | 富士フイルム株式会社 | Polymer functional film and method for producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI686431B (en) | 2020-03-01 |
| WO2016059973A1 (en) | 2016-04-21 |
| TW201627362A (en) | 2016-08-01 |
| JP6417843B2 (en) | 2018-11-07 |
| CN107075149B (en) | 2020-06-26 |
| JP2016079269A (en) | 2016-05-16 |
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