JP5361116B2 - Hydrous gel - Google Patents
Hydrous gel Download PDFInfo
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- JP5361116B2 JP5361116B2 JP2006108084A JP2006108084A JP5361116B2 JP 5361116 B2 JP5361116 B2 JP 5361116B2 JP 2006108084 A JP2006108084 A JP 2006108084A JP 2006108084 A JP2006108084 A JP 2006108084A JP 5361116 B2 JP5361116 B2 JP 5361116B2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 83
- 239000000499 gel Substances 0.000 claims description 74
- 239000000017 hydrogel Substances 0.000 claims description 41
- 239000011347 resin Substances 0.000 claims description 39
- 229920005989 resin Polymers 0.000 claims description 39
- 239000002250 absorbent Substances 0.000 claims description 19
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 16
- 150000005215 alkyl ethers Chemical class 0.000 claims description 15
- 230000002745 absorbent Effects 0.000 claims description 13
- -1 polyoxyethylene Polymers 0.000 claims description 13
- 125000004432 carbon atom Chemical group C* 0.000 claims description 11
- 239000003205 fragrance Substances 0.000 claims description 11
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 10
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- 239000002781 deodorant agent Substances 0.000 claims description 10
- 239000004359 castor oil Substances 0.000 claims description 8
- 235000019438 castor oil Nutrition 0.000 claims description 8
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 8
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 4
- 230000000844 anti-bacterial effect Effects 0.000 claims description 3
- 239000000077 insect repellent Substances 0.000 claims description 3
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 2
- 229920006322 acrylamide copolymer Polymers 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 description 23
- 239000007788 liquid Substances 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 9
- 239000004094 surface-active agent Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000002156 mixing Methods 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 5
- 239000000975 dye Substances 0.000 description 5
- 206010016807 Fluid retention Diseases 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000012463 white pigment Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- GLZPCOQZEFWAFX-UHFFFAOYSA-N Geraniol Chemical compound CC(C)=CCCC(C)=CCO GLZPCOQZEFWAFX-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- 229940048053 acrylate Drugs 0.000 description 2
- ZOJBYZNEUISWFT-UHFFFAOYSA-N allyl isothiocyanate Chemical compound C=CCN=C=S ZOJBYZNEUISWFT-UHFFFAOYSA-N 0.000 description 2
- FUWUEFKEXZQKKA-UHFFFAOYSA-N beta-thujaplicin Chemical compound CC(C)C=1C=CC=C(O)C(=O)C=1 FUWUEFKEXZQKKA-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- QMVPMAAFGQKVCJ-UHFFFAOYSA-N citronellol Chemical compound OCCC(C)CCC=C(C)C QMVPMAAFGQKVCJ-UHFFFAOYSA-N 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002087 whitening effect Effects 0.000 description 2
- QMVPMAAFGQKVCJ-SNVBAGLBSA-N (R)-(+)-citronellol Natural products OCC[C@H](C)CCC=C(C)C QMVPMAAFGQKVCJ-SNVBAGLBSA-N 0.000 description 1
- ADNXYZUJPHVRPJ-UHFFFAOYSA-N 1-ethenylpyrrolidin-2-one;styrene Chemical compound C=CN1CCCC1=O.C=CC1=CC=CC=C1 ADNXYZUJPHVRPJ-UHFFFAOYSA-N 0.000 description 1
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- GHXZTYHSJHQHIJ-UHFFFAOYSA-N Chlorhexidine Chemical compound C=1C=C(Cl)C=CC=1NC(N)=NC(N)=NCCCCCCN=C(N)N=C(N)NC1=CC=C(Cl)C=C1 GHXZTYHSJHQHIJ-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 235000005979 Citrus limon Nutrition 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- JGFDZZLUDWMUQH-UHFFFAOYSA-N Didecyldimethylammonium Chemical compound CCCCCCCCCC[N+](C)(C)CCCCCCCCCC JGFDZZLUDWMUQH-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000005792 Geraniol Substances 0.000 description 1
- GLZPCOQZEFWAFX-YFHOEESVSA-N Geraniol Natural products CC(C)=CCC\C(C)=C/CO GLZPCOQZEFWAFX-YFHOEESVSA-N 0.000 description 1
- 235000010254 Jasminum officinale Nutrition 0.000 description 1
- 240000005385 Jasminum sambac Species 0.000 description 1
- 244000178870 Lavandula angustifolia Species 0.000 description 1
- 235000010663 Lavandula angustifolia Nutrition 0.000 description 1
- 244000246386 Mentha pulegium Species 0.000 description 1
- 235000016257 Mentha pulegium Nutrition 0.000 description 1
- 235000004357 Mentha x piperita Nutrition 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical class C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000736892 Thujopsis dolabrata Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical class OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 235000016720 allyl isothiocyanate Nutrition 0.000 description 1
- TUFYVOCKVJOUIR-UHFFFAOYSA-N alpha-Thujaplicin Natural products CC(C)C=1C=CC=CC(=O)C=1O TUFYVOCKVJOUIR-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- JGQFVRIQXUFPAH-UHFFFAOYSA-N beta-citronellol Natural products OCCC(C)CCCC(C)=C JGQFVRIQXUFPAH-UHFFFAOYSA-N 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229960003260 chlorhexidine Drugs 0.000 description 1
- 229960003333 chlorhexidine gluconate Drugs 0.000 description 1
- YZIYKJHYYHPJIB-UUPCJSQJSA-N chlorhexidine gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O.C1=CC(Cl)=CC=C1NC(=N)NC(=N)NCCCCCCNC(=N)NC(=N)NC1=CC=C(Cl)C=C1 YZIYKJHYYHPJIB-UUPCJSQJSA-N 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 229960005233 cineole Drugs 0.000 description 1
- 235000000484 citronellol Nutrition 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229940078672 didecyldimethylammonium Drugs 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229940113087 geraniol Drugs 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000012208 gluconic acid Nutrition 0.000 description 1
- 239000000174 gluconic acid Substances 0.000 description 1
- 229950006191 gluconic acid Drugs 0.000 description 1
- 235000001050 hortel pimenta Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000001102 lavandula vera Substances 0.000 description 1
- 235000018219 lavender Nutrition 0.000 description 1
- 235000001510 limonene Nutrition 0.000 description 1
- 229940087305 limonene Drugs 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- AQZSPJRLCJSOED-UHFFFAOYSA-M trimethyl(octyl)azanium;chloride Chemical compound [Cl-].CCCCCCCC[N+](C)(C)C AQZSPJRLCJSOED-UHFFFAOYSA-M 0.000 description 1
- 229930007845 β-thujaplicin Natural products 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or 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 of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/24—Homopolymers or copolymers of amides or imides
- C08L33/26—Homopolymers or copolymers of acrylamide or methacrylamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Description
本発明は、アクリルアミド−アクリル酸塩共重合体の吸水性樹脂を用いて調製される含水ゲルに関する。詳細には、アクリルアミド−アクリル酸塩共重合体を吸水性樹脂として含み、均一な白色を呈する含水ゲルに関する。 The present invention relates to a water-containing gel prepared using a water-absorbing resin of an acrylamide-acrylate copolymer. Specifically, the present invention relates to a hydrogel that contains an acrylamide-acrylate copolymer as a water-absorbing resin and exhibits a uniform white color.
ゲルは芳香成分や消臭成分を揮散させるための基剤として有用であり、従来、ゲル状の芳香・消臭剤が広く使用されている。従来、ゲル状の芳香・消臭剤は、１つのブロック状のゲルから構成されるものが主流であった。一方、所定形状の含水ゲルを複数個集合させた含水ゲルの集合物には、外観が良好になり意匠的効果に優れるという利点に加えて、空間に露出されるゲル表面積が増大するので、揮散性成分の揮散を促進させることができるという有利な効果が期待される。そこで、近年、含水ゲルの集合物の形態である芳香・消臭剤が注目されている。 Gels are useful as a base for volatilizing fragrance components and deodorant components, and conventionally, gel-like fragrance / deodorants have been widely used. Conventionally, a gel-like fragrance / deodorant is mainly composed of one block-like gel. On the other hand, a collection of hydrogels, which are a collection of a plurality of hydrogels of a predetermined shape, has the advantage that the gel surface area exposed to the space increases in addition to the advantage that the appearance is good and the design effect is excellent. The advantageous effect that volatilization of the sex component can be promoted is expected. Therefore, in recent years, fragrance / deodorants that are in the form of aggregates of hydrous gels have attracted attention.
従来、所定の形状を有する含水ゲルの製造には、架橋ポリアルキレンオキサイド、架橋アクリル酸等の吸収性樹脂が一般的に使用されている。しかしながら、これらの吸収性樹脂を使用して調製した含水ゲルの集合物を消臭剤や芳香剤等として使用すると、次のような問題点が生じる：
(1) 含水ゲルを集合物にすると、該集合物の上層部分に存在する含水ゲルの重みにより、下層部分に存在する含水ゲルの変形や破損が著しくなる場合がある。従って、集合物として使用される含水ゲルには、ゲル強度が強く、優れた形状安定性を備えていることが求められる。しかしながら、上記の吸水性樹脂では、形状安定性の点で必ずしも満足できるものではない。
(2) 上記の吸収性樹脂では、吸水力（水を吸収する能力）又は保水力（吸収した水を保持する能力）が不十分であるという欠点がある。そのため、容器に含水ゲルの集合物を収容すると、該集合物の上層部分に存在する含水ゲルの重みによって、下層部分に存在する含水ゲルの内部から液体が漏出することがある。これによって、含水ゲルの集合物の下層部分では、液体と含水ゲルが混在して、個々の含水ゲルの形状を視認できなくなり、個々の含水ゲルの形状に基づく意匠効果が損なわれる。また、含水ゲルに液体が十分に保持されていなければ、含水ゲルから漏出した液体が容器の外に溢れる畏れがあるため、上部にのみ揮散口がある容器にしか収容することができず、容器の形状にも制限を受ける。
Conventionally, absorbent resins such as cross-linked polyalkylene oxide and cross-linked acrylic acid are generally used for the production of a hydrogel having a predetermined shape. However, when an aggregate of hydrogels prepared using these absorbent resins is used as a deodorant or fragrance, the following problems occur:
(1) When a hydrous gel is an aggregate, the hydrogel present in the lower layer part may be significantly deformed or broken due to the weight of the hydrogel present in the upper layer part of the aggregate. Therefore, the hydrogel used as an aggregate is required to have a high gel strength and excellent shape stability. However, the above water-absorbent resin is not always satisfactory in terms of shape stability.
(2) The above-described absorbent resin has a drawback that its water absorption capacity (capability to absorb water) or water retention capacity (capability to retain absorbed water) is insufficient. Therefore, when the aggregate of the hydrogel is accommodated in the container, the liquid may leak from the inside of the hydrogel present in the lower layer portion due to the weight of the hydrogel present in the upper layer portion of the aggregate. As a result, in the lower layer portion of the aggregate of hydrous gels, the liquid and the hydrous gel are mixed, and the shape of the individual hydrogels cannot be visually recognized, and the design effect based on the shape of each hydrous gel is impaired. In addition, if the liquid is not sufficiently retained in the hydrated gel, the liquid leaked from the hydrated gel may overflow outside the container, so it can only be accommodated in a container with a volatilization opening on the top, and the container The shape is also limited.
そこで、本発明者が、上記の問題点に鑑みて検討を行ったところ、含水ゲルの集合物の下層部分に存在する個々の含水ゲルの変形や破損を抑制し、形状を安定に保持させることを可能とする吸水性樹脂として、アクリルアミド−アクリル酸塩共重合体が有用であることを見出した。しかしながら、本発明者は、更なる検討を行っていく上で、アクリルアミド−アクリル酸塩共重合体の吸水性樹脂を使用して調製した含水ゲルは、白色に染色し難いという問題に直面した。即ち、白色顔料や染料を使用して上記含水ゲルの染色を試みても、白色化が不均一になるという不具合が生じたり、白色顔料や染料が該含水ゲルの内部に浸透せずにゲル表面に止まるため、白色顔料や染料が含水ゲルから脱離し易いという問題点が生じることが確認された。 Then, when this inventor examined in view of said problem, it suppresses the deformation | transformation and damage of each water-containing gel which exists in the lower layer part of the aggregate of a water-containing gel, and keeps a shape stably. It has been found that an acrylamide-acrylate copolymer is useful as a water-absorbing resin that makes it possible. However, the present inventor faced the problem that the water-containing gel prepared by using the water-absorbing resin of acrylamide-acrylate copolymer is difficult to be dyed white in further study. That is, even when trying to dye the above-mentioned hydrogel using a white pigment or dye, the problem of non-uniform whitening occurs, or the white pigment or dye does not penetrate into the hydrogel and the gel surface Therefore, it was confirmed that the problem that white pigments and dyes were easily detached from the water-containing gel occurred.
そこで、アクリルアミド−アクリル酸塩共重合体の吸水性樹脂を用いて調製した含水ゲルに対して、均一な白色を呈させることができれば、該含水ゲルに１つの意匠的効果を付与でき、該含水ゲルの付加価値の向上につながる。 Thus, if the water-containing gel prepared using the water-absorbing resin of acrylamide-acrylate copolymer can exhibit a uniform white color, one design effect can be imparted to the water-containing gel. This leads to an increase in the added value of the gel.
そこで、本発明は、アクリルアミド−アクリル酸塩共重合体を吸水性樹脂として含み、均一な白色を呈する含水ゲルを提供することを目的とする。 Therefore, an object of the present invention is to provide a water-containing gel that contains an acrylamide-acrylate copolymer as a water-absorbing resin and exhibits a uniform white color.
本発明者は、上記課題を解決すべく鋭意検討したところ、多種存在する界面活性剤の中でも、特定の界面活性剤、具体的には以下の一般式（１）及び（２）に示す界面活性剤を選択し使用すれば、アクリルアミド−アクリル酸塩共重合体の吸水性樹脂から調製された含水ゲルに特有の上記課題を解決できることを見出した。 The present inventor has intensively studied to solve the above-mentioned problems. As a result, among the various surfactants, specific surfactants, specifically, the surfactants represented by the following general formulas (1) and (2) are used. It has been found that the above-mentioned problems peculiar to a hydrogel prepared from a water-absorbing resin of acrylamide-acrylate copolymer can be solved by selecting and using an agent.
即ち、本発明は、以下に掲げる含水ゲルを提供する：
項１．（A）アクリルアミド／アクリル酸共重合体を含む吸水性樹脂、
（B）水、
（C）一般式（１）で示されるポリオキシアルキレンアルキルエーテル、
That is, the present invention provides the following hydrogels:
(B) water,
(C) a polyoxyalkylene alkyl ether represented by the general formula (1),
（式（１）中、Ｒは、直鎖状の炭素数１３〜１８のアルキル基、ｎは５〜８の整数、ｍは０〜２の整数、及びｎ＋ｍ＝５〜８である；或いは
Ｒは、分岐状の炭素数１０〜１８のアルキル基、ｎは５又は６の整数、ｍは０〜２の整数、及びｎ＋ｍ＝５又は６である。）
及び／又は一般式（２）で示されるポリオキシエチレン硬化ひまし油エーテル
(In the formula (1), R is a linear alkyl group having 13 to 18 carbon atoms, n is an integer of 5 to 8, m is an integer of 0 to 2, and n + m = 5 to 8; or R Is a branched alkyl group having 10 to 18 carbon atoms, n is an integer of 5 or 6, m is an integer of 0 to 2, and n + m = 5 or 6.
And / or polyoxyethylene hydrogenated castor oil ether represented by the general formula (2)
（式（２）中、ｉ、ｊ、ｋは、１〜５８の整数であり、且つｉ＋ｊ＋ｋ＝４０〜６０を満たす。）
を含有することを特徴とする、含水ゲル。
項２． （C）成分が、
一般式（１）において、直鎖状の炭素数１３のアルキル基、ｎは５〜８の整数、ｍは０〜２の整数、及びｎ＋ｍ＝５〜８を満たすポリオキシアルキレンアルキルエーテル；及び／又は
一般式（２）で示されるポリオキシエチレン硬化ひまし油エーテル
である、項１に記載の含水ゲル。
項３． 更に、機能性成分を有する、項１又は２に記載の含水ゲル。
項４． 更に、機能性成分が、芳香成分及び／又は芳香成分である、項１乃至３のいずれかに記載の含水ゲル。
(In formula (2), i, j, and k are integers of 1 to 58 and satisfy i + j + k = 40 to 60).
A water-containing gel, comprising:
In the general formula (1), a linear alkyl group having 13 carbon atoms, n is an integer of 5 to 8, m is an integer of 0 to 2, and polyoxyalkylene alkyl ether satisfying n + m = 5 to 8; and / Or the hydrogel of claim |
Item 4. Item 4. The hydrogel according to any one of
本発明の含水ゲルによれば、アクリルアミド−アクリル酸塩共重合体の吸水性樹脂を含みながら、含水ゲルの表面だけでなく内部にも白色呈示成分が浸入されているので、均一な白色を呈することができる。それ故、含水ゲルの美観が良好であり、その意匠的効果が高められている。 According to the water-containing gel of the present invention, the white display component is infiltrated not only on the surface of the water-containing gel but also inside the water-containing gel while containing the water-absorbing resin of the acrylamide-acrylate copolymer, so that it exhibits a uniform white color. be able to. Therefore, the aesthetics of the hydrogel is good and its design effect is enhanced.
また、本発明の含水ゲルは、アクリルアミド−アクリル酸塩共重合体の吸水性樹脂を使用しており、形状安定性や保水力が良好である。そのため、本発明の含水ゲルを集合物の形態にしても、当該集合物の上層部分から下層部分に亘って、個々の含水ゲルの形状や保水力を安定に保持できる。従って、本発明の含水ゲルを集合物にして容器に収容しても、容器内の含水ゲルの集合物の上層部分から下層部分に至るまで個々の含水ゲルの形状を視認でき、優れた意匠効果を得ることができる。 Moreover, the water-containing gel of the present invention uses a water-absorbing resin of acrylamide-acrylate copolymer, and has good shape stability and water retention. Therefore, even if the hydrated gel of the present invention is in the form of an aggregate, the shape and water retention of each hydrated gel can be stably maintained from the upper layer portion to the lower layer portion of the aggregate. Therefore, even if the hydrogel of the present invention is aggregated and accommodated in a container, the shape of each hydrogel can be visually recognized from the upper layer portion to the lower layer portion of the hydrogel aggregate in the container, and an excellent design effect Can be obtained.
以下、本発明について詳述する。 Hereinafter, the present invention will be described in detail.
本発明の含水ゲルは、（A）アクリルアミド−アクリル酸塩共重合体の吸水性樹脂を用
いて調製されるものである。かかる吸収性樹脂を使用することによって、形状安定性に優れ、吸水力や保水力も良好な含水ゲルを得ることが可能になる。
The water-containing gel of the present invention is prepared using a water-absorbent resin of (A) acrylamide-acrylate copolymer. By using such an absorptive resin, it is possible to obtain a water-containing gel having excellent shape stability and good water absorption and water retention.
本発明で使用されるアクリルアミド−アクリル酸塩共重合体は、ブロック共重合体であっても、ランダム共重合体であってもよい。また、本発明で使用されるアクリルアミド−アクリル酸塩共重合体は、そのアクリルアミドとアクリル酸塩との構成比率についても特に制限されるものではないが、一例としてアクリルアミド：アクリル酸の構成比が１０：０．５〜１０、好ましくは１０：３．３〜８．２、更に好ましくは１０：４．３〜６．７のものが例示される。本発明で使用されるアクリルアミド−アクリル酸塩共重合体としては、例えば、アクリルアミド−アクリル酸アルカリ金属塩共重合体が挙げられ、好ましくはアクリルアミド−アクリル酸ナトリウム共重合体が挙げられる。 The acrylamide-acrylate copolymer used in the present invention may be a block copolymer or a random copolymer. In addition, the acrylamide-acrylate copolymer used in the present invention is not particularly limited in the composition ratio of acrylamide and acrylate, but as an example, the composition ratio of acrylamide: acrylic acid is 10 : 0.5 to 10, preferably 10: 3.3 to 8.2, more preferably 10: 4.3 to 6.7. Examples of the acrylamide-acrylate copolymer used in the present invention include an acrylamide-alkali metal acrylate copolymer, and preferably an acrylamide-sodium acrylate copolymer.
本発明の含水ゲルは、上記吸水性樹脂が後述する成分を吸収して膨潤することにより調製されるので、上記吸水性樹脂は、目的とする含水ゲルの形状や大きさ等を考慮して、その形状やその他の特性を適宜設定される。なお、吸水性樹脂の製造方法は公知であり、本発明では、アクリルアミド−アクリル酸塩共重合体を用いて公知の方法に従って調製された吸水性樹脂を使用できる。 Since the water-absorbing gel of the present invention is prepared by the above-mentioned water-absorbing resin swells by absorbing components described later, the water-absorbing resin takes into consideration the shape and size of the intended water-containing gel, The shape and other characteristics are appropriately set. In addition, the manufacturing method of a water absorbing resin is well-known, In this invention, the water absorbing resin prepared in accordance with the well-known method using the acrylamide-acrylate copolymer can be used.
本発明の含水ゲルにおいて、上記吸水性樹脂の配合割合としては、含水ゲルの用途や使用する界面活性剤の種類等によって異なるが、例えば、該含水ゲルの総量に対して、上記吸水性樹脂が、通常０．７〜２０重量％、好ましくは０．８〜１０重量％、更に好ましくは０．９〜６重量％が挙げられる。 In the water-containing gel of the present invention, the mixing ratio of the water-absorbing resin varies depending on the use of the water-containing gel and the type of surfactant used. Usually, 0.7 to 20% by weight, preferably 0.8 to 10% by weight, and more preferably 0.9 to 6% by weight.
本発明の含水ゲルは、上記吸水性樹脂をさせてゲルを形成させるために、（B）水を含
有する。本発明の含水ゲルにおいて、水の配合割合は、含水ゲルの用途、含水ゲルの大きさ等に応じて適宜設定されるが、一例として、該含水ゲルの総量に対して、水が５０〜９９重量％、好ましくは６０〜９９重量％、更に好ましくは８０〜９９重量％となる割合が挙げられる。
The water-containing gel of the present invention contains (B) water in order to cause the water-absorbent resin to form a gel. In the water-containing gel of the present invention, the blending ratio of water is appropriately set according to the use of the water-containing gel, the size of the water-containing gel, etc. As an example, water is 50 to 99 with respect to the total amount of the water-containing gel. The ratio which becomes weight%, Preferably it is 60 to 99 weight%, More preferably, it is 80 to 99 weight%.
更に、本発明の含水ゲルは、（C）以下の一般式（１）及び（２）のいずれか一方又は
双方の化合物を含有する。このような化合物を使用することによって、上記(A)の吸水性
樹脂を使用した含水ゲルにおいて良好な白色を呈させることが可能になる。つまり、上記
(A)の吸水性樹脂を使用した含水ゲルの特有の問題が、一般式（１）及び（２）のいずれ
か少なくとも１つの化合物を配合することにより解消される。
Furthermore, the water-containing gel of the present invention contains (C) one or both of the following general formulas (1) and (2). By using such a compound, it becomes possible to exhibit a good white color in the water-containing gel using the water-absorbing resin (A). That is, the above
The problem peculiar to the water-containing gel using the water-absorbent resin (A) is solved by blending at least one compound of any one of the general formulas (1) and (2).
一般式（１）で示されるポリオキシアルキレンアルキルエーテルPolyoxyalkylene alkyl ether represented by the general formula (1)
当該一般式（１）で示されるポリオキシアルキレンアルキルエーテルは、以下の(C-1-1)及び(C-1-2)の２つに類別される。
(C-1-1)一般式（１）中、Ｒは、直鎖状の炭素数１３〜１８のアルキル基、好ましくは直
鎖状の炭素数１３〜１５のアルキル基、更に好ましくは直鎖状の炭素数１３のアルキル基を示し；ｎは５〜８の整数；ｍは０〜２の整数；及びｎ＋ｍ＝５〜８である。
(C-1-2) 一般式（１）中、Ｒは、分岐状の炭素数１０〜１８のアルキル基、好ましくは分岐状の炭素数１０〜１３のアルキル基、更に好ましくは分岐状の炭素数１０のアルキル基を示し；ｎは５又は６の整数；ｍは０〜２、好ましくは０又は１の整数、及びｎ＋ｍ＝５又は６である。
上記ポリオキシアルキレンアルキルエーテルにおいて、エチレンオキシドとプロピレンオキシドはランダム又はブロック付加体のいずれであってもよい。また、上記ポリオキシアルキレンアルキルエーテルには、Ｒにプロピレンオキシドが直接結合したものも含まれる。
The polyoxyalkylene alkyl ether represented by the general formula (1) is classified into the following two (C-1-1) and (C-1-2).
(C-1-1) In the general formula (1), R is a linear alkyl group having 13 to 18 carbon atoms, preferably a linear alkyl group having 13 to 15 carbon atoms, more preferably a linear group. N is an integer of 5-8; m is an integer of 0-2; and n + m = 5-8.
(C-1-2) In the general formula (1), R is a branched alkyl group having 10 to 18 carbon atoms, preferably a branched alkyl group having 10 to 13 carbon atoms, more preferably a branched carbon atom. N represents an integer of 5 or 6, m represents an integer of 0 to 2, preferably 0 or 1, and n + m = 5 or 6.
In the polyoxyalkylene alkyl ether, ethylene oxide and propylene oxide may be random or block adducts. The polyoxyalkylene alkyl ether includes those in which propylene oxide is directly bonded to R.
当該ポリオキシアルキレンアルキルエーテルとして、含水ゲルの吸水力の低下を抑制するという観点からは、上記(C-1-1)に示すポリオキシアルキレンアルキルエーテルが好適
に使用される。
As the polyoxyalkylene alkyl ether, the polyoxyalkylene alkyl ether represented by the above (C-1-1) is preferably used from the viewpoint of suppressing a decrease in water absorption of the hydrogel.
一般式（２）で示されるポリオキシエチレン硬化ひまし油エーテルPolyoxyethylene hydrogenated castor oil ether represented by the general formula (2)
一般式（２）中、ｉ、ｊ、ｋは、１〜５８の整数であり、且つｉ＋ｊ＋ｋ＝４０〜６０を満たす。当該ポリオキシエチレン硬化ひまし油エーテルは、含水ゲルの吸水力の低下を抑制できるという利点もあり、本発明において好適に使用される。 In the general formula (2), i, j, and k are integers of 1 to 58 and satisfy i + j + k = 40 to 60. The polyoxyethylene hydrogenated castor oil ether also has an advantage that it is possible to suppress a decrease in the water absorption capacity of the hydrogel, and is preferably used in the present invention.
本発明の含水ゲルには、上記（C）の化合物の中から、１種の化合物を選択して単独で
使用してもよく、また２種以上の化合物を任意に組み合わせて使用してもよい。
In the water-containing gel of the present invention, one compound may be selected from the compounds (C) and used alone, or two or more compounds may be used in any combination. .
本発明の含水ゲルにおける上記（C）の化合物の配合割合は、含水ゲルに付与する白色
の程度、該化合物の種類、該含水ゲルの用途等によって異なるが、例えば、該含水ゲルの総量に対して、（C）の界面活性剤が総量で０．１〜２０重量％、好ましくは０．２〜１
０重量％、更に好ましくは０．５〜５重量％となる割合が挙げられる。
The compounding ratio of the compound (C) in the water-containing gel of the present invention varies depending on the degree of whiteness imparted to the water-containing gel, the type of the compound, the use of the water-containing gel, etc., for example, with respect to the total amount of the water-containing gel The total amount of the surfactant (C) is 0.1 to 20% by weight, preferably 0.2 to 1%.
A proportion of 0% by weight, more preferably 0.5 to 5% by weight is mentioned.
上記（C）の化合物は界面活性剤としても作用するので、本発明の含水ゲルには、親水
性の機能性成分のみならず、油性の機能性成分を含有することができるという利点が得られる。本発明において、機能性成分は、含水ゲルの内部に浸透した状態で含まれていてもよいが、含水ゲルの表面に付着した状態で含まれていてもよい。
Since the compound (C) also acts as a surfactant, the water-containing gel of the present invention has an advantage that it can contain not only a hydrophilic functional component but also an oily functional component. . In the present invention, the functional component may be contained in a state of penetrating the inside of the hydrogel, but may be contained in a state of adhering to the surface of the hydrogel.
本発明において、機能性成分は、含水ゲルが使用される環境で所望の機能を発現可能である成分であればよく、含水ゲルの用途に応じて適宜選択される。本発明では、機能性成分として、好ましくは、使用される環境で空気中に揮散可能である成分が挙げられる。機能性成分の具体例としては、芳香成分、消臭成分、防虫成分、抗菌成分等が挙げられる。 In this invention, a functional component should just be a component which can express a desired function in the environment where a hydrogel is used, and is suitably selected according to the use of a hydrogel. In the present invention, the functional component preferably includes a component that can be volatilized in the air in the environment in which it is used. Specific examples of functional components include aromatic components, deodorant components, insect repellent components, antibacterial components and the like.
具体的には、芳香成分としては、例えば、ラベンダ−、レモン、オレンジ、ジャスミン、ペパ−ミント等の天然香料；リモネン、タ−ピノレン、ゲラニオ−ル、シトロネロ−ル、酢酸エチル等の合成香料；及びこれらのブレンド香料等が挙げられる。 Specifically, examples of the fragrance component include natural fragrances such as lavender, lemon, orange, jasmine, and peppermint; synthetic fragrances such as limonene, tapinolene, geraniol, citronellol, and ethyl acetate; And blended fragrances thereof.
また、消臭成分としては、例えば、イネ、松、ヒノキ、笹等の植物の抽出物；脱塩型ベタイン化合物；変性有機酸化合物；トリエタノールアミン；安定化二酸化塩素；アルデヒド化合物等が挙げられる。 Examples of the deodorant component include extracts from plants such as rice, pine, hinoki and cocoon; desalted betaine compounds; modified organic acid compounds; triethanolamine; stabilized chlorine dioxide; aldehyde compounds and the like. .
防虫成分としては、例えば、ヒノキチオール、ヒバ油、アリルイソチオシアネート、プロピレングリコールモノメチルエーテル、エタノール、プロパノール、１．８―シネオール等が挙げられる。 Examples of the insect repellent component include hinokitiol, hiba oil, allyl isothiocyanate, propylene glycol monomethyl ether, ethanol, propanol, 1.8-cineol and the like.
抗菌成分としては、例えば、オクチルトリメチルアンモニウムクロライド、ジデシルジメチルアンモニウムグルコン酸、クロルヘキシジン、グルコン酸クロルヘキシジン、等が挙げられる。 Examples of the antibacterial component include octyltrimethylammonium chloride, didecyldimethylammonium gluconic acid, chlorhexidine, chlorhexidine gluconate, and the like.
これらの機能性成分は、１種単独で使用してもよく、また２種以上を組み合わせて使用してもよい。本発明の含水ゲルに使用される機能性成分として、好ましくは、芳香成分及び消臭成分が挙げられ、更に好ましくは油性の芳香成分及び消臭成分が挙げられる。 These functional components may be used individually by 1 type, and may be used in combination of 2 or more type. The functional component used in the water-containing gel of the present invention is preferably an aromatic component and a deodorizing component, more preferably an oily aromatic component and a deodorizing component.
本発明の含水ゲルにおける機能性成分の配合割合は、機能性成分の種類、該含水ゲルの用途、上記(C)の化合物の種類等によって異なるが、例えば、該含水ゲルの総量に対して
、機能成分が０．１〜４９．３重量％、好ましくは０．２〜３９．２重量％、更に好ましくは０．４〜１９．１重量％となる割合が挙げられる。
The blending ratio of the functional component in the water-containing gel of the present invention varies depending on the type of the functional component, the use of the water-containing gel, the type of the compound (C), etc. The proportion of the functional component is 0.1 to 49.3 wt%, preferably 0.2 to 39.2 wt%, more preferably 0.4 to 19.1 wt%.
更に、本発明の含水ゲルは、上記の配合成分に加えて、本発明の効果を妨げないことを限度として、必要に応じて、他の界面活性剤；防腐剤；酸化防止剤；紫外線吸収剤；顔料、染料等の色素等の成分を適当量含有することもできる。 Furthermore, the water-containing gel of the present invention may contain other surfactants, preservatives, antioxidants, and ultraviolet absorbers as necessary, as long as the effects of the present invention are not hindered in addition to the above-described blending components. An appropriate amount of components such as pigments and pigments such as dyes may be contained.
本発明の含水ゲルの形状については、特に制限されず、該含水ゲルの用途に応じて適宜設定される。例えば、球状、直方状、星型等の幾何学体であってもよく、また動物、植物、アニメキャラクター等の特殊形状であってもよい。 The shape of the water-containing gel of the present invention is not particularly limited, and is appropriately set according to the use of the water-containing gel. For example, it may be a spherical shape, a rectangular shape, a star shape, or a special shape such as an animal, a plant, or an anime character.
また、本発明の含水ゲルの大きさについても、特に制限されず、該含水ゲルの用途に応じて適宜設定される。本発明の含水ゲル集合物の形態にする場合であれば例えば０．０５〜５．０ｃｍ３程度、好ましくは０．１〜５．０ｃｍ３程度の容積にすることが望ましい。このような容積の含水ゲルを集合物にして容器に収容しても、集合物の下層部分に存在する含水ゲルは、変形や破損したり、液体を漏出させたりすることなく、形状を安定に保持することができる。従って、本発明の含水ゲルの集合物を容器に収容することによって、容器内の含水ゲルの集合物の上層部分から下層部分に至るまで個々の含水ゲルの形状を
視認でき、優れた意匠効果を得ることができる。
Moreover, it does not restrict | limit especially about the magnitude | size of the water-containing gel of this invention, According to the use of this water-containing gel, it sets suitably. Hydrogel aggregate when a long if for example 0.05～5.0Cm 3 approximately in the form of the present invention, preferably it is desirable that a volume of about 0.1~5.0cm 3. Even when such a volume of hydrous gel is aggregated and accommodated in a container, the hydrogel present in the lower layer portion of the aggregate is stable in shape without deformation, breakage, or leakage of liquid. Can be held. Therefore, by storing the aggregate of the hydrogel of the present invention in the container, the shape of each hydrogel from the upper layer portion to the lower layer portion of the aggregate of the hydrogel in the container can be visually confirmed, and an excellent design effect is obtained. Can be obtained.
本発明の含水ゲルは、公知の方法に従って製造される。即ち、(A)吸水性樹脂、(B)水、（C）化合物、及び必要に応じてその他の成分の所定量を容器に入れて混合し、容器を密
閉し、室温で２４時間程度静置して、前記吸水性樹脂に添加成分を吸収させる。この間、必要に応じて、容器を振動させる等の手段により撹拌処理を施してもよい。
The hydrogel of the present invention is produced according to a known method. That is, (A) water-absorbent resin, (B) water, (C) compound, and if necessary, other components are mixed in a predetermined amount, and the container is sealed and allowed to stand at room temperature for about 24 hours. Then, the additive component is absorbed by the water absorbent resin. During this time, if necessary, stirring may be performed by means such as vibrating the container.
以下、試験例及び実施例を挙げて本発明を説明するが、本発明はこれらに限定されるものではない。なお、以下、ポリオキシエチレンを「POE」、またポリオキシプロピレンを
「POP」と略記することもある。
試験例１
透明ガラス容器（約１５０ｍｌ容；底面積約１２．６ｃｍ２）内で、表１に示す成分を含む含水ゲルを調製した。具体的には、容器に所定量の吸水性樹脂（アクリルアミド−アクリル酸ナトリウム共重合体）を添加し、更にその他の配合成分を所定量混合した溶液を容器に添加した。その後、容器を密閉し、室温で２４時間静置して吸水性樹脂を膨潤させ、含水ゲルを形成させた。次いで、以下の方法で、含水ゲルの色調及び吸水性樹脂の吸水力を評価した。
EXAMPLES Hereinafter, although a test example and an Example are given and this invention is demonstrated, this invention is not limited to these. Hereinafter, polyoxyethylene may be abbreviated as “POE” and polyoxypropylene may be abbreviated as “POP”.
Test example 1
A water-containing gel containing the components shown in Table 1 was prepared in a transparent glass container (about 150 ml volume; bottom area about 12.6 cm 2 ). Specifically, a predetermined amount of water-absorbing resin (acrylamide-sodium acrylate copolymer) was added to the container, and a solution in which a predetermined amount of other blending components were mixed was added to the container. Thereafter, the container was sealed and allowed to stand at room temperature for 24 hours to swell the water-absorbent resin, thereby forming a hydrous gel. Subsequently, the color tone of the water-containing gel and the water absorption ability of the water absorbent resin were evaluated by the following methods.
＜含水ゲルの色調の評価＞
形成された含水ゲルを目視にて観察して、その色調（白色の程度）について評価した。具体的には、含水ゲルの色調は、以下の判定スコアに従ってスコア化した。なお、参考のため、下記の各々の判定スコア値に対応する状態を写真撮影したものを図１に示す。
判定スコア
５： 強い白色が呈されており、含水ゲルが不透明になっている
４： 鮮明な白色が呈されており、含水ゲルが半透明乃至不透明になっている
３： 僅かに白色が呈されて、含水ゲルが半透明になっている
２： ほぼ透明な状態であり、殆ど白色化されていない
１： 透明な状態であり、白色化されていない。
<Evaluation of color tone of hydrous gel>
The formed water-containing gel was visually observed and evaluated for its color tone (degree of whiteness). Specifically, the color tone of the hydrogel was scored according to the following judgment score. For reference, FIG. 1 shows a photograph of a state corresponding to each of the following determination score values.
Judgment score 5: A strong white color is present, and the hydrogel is opaque 4: A clear white color is present, and the hydrogel is translucent or opaque 3: A slight white color is exhibited The water-containing gel is translucent 2: almost transparent, almost not whitened 1: transparent, not whitened.
＜吸水性樹脂の吸水力の評価＞
吸水性樹脂に吸収されずに容器内に残存している液体を観察して、吸水性樹脂の吸水力を評価した。具体的には、吸水性樹脂の吸水力は、以下の判定スコアに従ってスコア化した。なお、参考のため、下記の各々の判定スコア値に対応する状態を写真撮影したものを図２に示す。
判定スコア
５： 液体が殆ど残存していない
４： 容器底部において、液体が水滴状で僅かに残存している
３： 容器底部において、部分的に液体が残存している
２： 容器の側面から観察すると液体の残存を視認できないが、容器底部の底部の全面に液体が残存している
１： 容器の側面からも視認できる程度に、液体が残存している。
<Evaluation of water absorption capacity of water absorbent resin>
The liquid remaining in the container without being absorbed by the water absorbent resin was observed to evaluate the water absorbing power of the water absorbent resin. Specifically, the water absorption capacity of the water absorbent resin was scored according to the following determination score. For reference, FIG. 2 shows a photograph of a state corresponding to each of the following determination score values.
Judgment score 5: Almost no liquid 4: Liquid remains slightly in the form of water droplets at the bottom of the container 3: Partial liquid remains at the bottom of the container 2: Observation from the side of the container Then, although the liquid remains cannot be visually recognized, the liquid remains on the entire bottom surface of the container bottom 1: The liquid remains to the extent that it can be visually recognized from the side surface of the container.
得られた結果を表２に示す。表２のNo.1-1〜1-5に示す化合物を使用した含水ゲルでは
、含水ゲルの内部に白色呈示成分が浸透しており、見た目に美しい白色が呈されていた。この結果から、界面活性剤として、一般式（１）で示されるポリオキシアルキレンアルキルエーテルを使用することによって、アクリルアミド−アクリル酸ナトリウム共重合体の吸水性樹脂の含水ゲルを鮮明な白色に呈色去ることが可能になることが明らかとなった。
The obtained results are shown in Table 2. In the water-containing gel using the compounds shown in Nos. 1-1 to 1-5 in Table 2, the white presenting component penetrated into the water-containing gel, and a beautiful white color was exhibited. From this result, by using the polyoxyalkylene alkyl ether represented by the general formula (1) as the surfactant, the water-containing gel of the water-absorbing resin of the acrylamide-sodium acrylate copolymer is colored in clear white. It became clear that it was possible to leave.
これに対して、表２の比-1〜比19に示すポリオキシアルキレンアルキルエーテルを使用しても、アクリルアミド−アクリル酸ナトリウム共重合体の吸水性樹脂の含水ゲルを白色にすることはできなかった。また、本発明者の別の試験結果から、ビニルピロリドン−スチレンモノマー共重合体等の白濁化剤や、酸化チタン等の白色顔料を添加して、アクリルアミド−アクリル酸ナトリウム共重合体の吸水性樹脂の含水ゲルの白色化を試みても、均一で鮮明な白色を呈させることはできないことが確認されている。 On the other hand, even if the polyoxyalkylene alkyl ether shown in the ratio-1 to 19 in Table 2 is used, the water-containing gel of the water-absorbing resin of the acrylamide-sodium acrylate copolymer cannot be made white. It was. Further, from another test result of the present inventors, a water-absorbing resin of acrylamide-sodium acrylate copolymer was added by adding a white turbidity agent such as vinylpyrrolidone-styrene monomer copolymer or a white pigment such as titanium oxide. It has been confirmed that even if an attempt is made to whiten the water-containing gel, no uniform and clear white color can be exhibited.
更に、本試験結果から、表２のNo.1-1〜1-5のポリオキシアルキレンアルキルエーテル
を使用すると、アクリルアミド−アクリル酸ナトリウム共重合体の吸水性樹脂の吸水力を低下させることを抑制できることも分かった。
Furthermore, from this test result, when the polyoxyalkylene alkyl ethers No. 1-1 to 1-5 in Table 2 are used, the water absorption capacity of the water absorbent resin of the acrylamide-sodium acrylate copolymer is suppressed. I also found that I can do it.
試験例２
ポリオキシアルキレンアルキルエーテルの代わりに、表３に示すポリオキシエチレン硬化ひまし油エーテルを用いること以外は、上記試験例１と同様の方法で、含水ゲルを調製して、吸水性樹脂の吸水力及び含水ゲルの色調（白色の程度）を評価した。
Test example 2
A water-containing gel was prepared in the same manner as in Test Example 1 except that the polyoxyethylene hydrogenated castor oil ether shown in Table 3 was used instead of the polyoxyalkylene alkyl ether. The color tone (whiteness degree) of the gel was evaluated.
得られた結果を表３に示す。界面活性剤として、一般式（２）で示されるポリオキシエチレン硬化ひまし油エーテルを使用しても、一般式（１）で示されるポリオキシアルキレンアルキルエーテルの場合と同様に、アクリルアミド−アクリル酸ナトリウム共重合体の含水ゲルの鮮やかな白色化が可能であった。 The obtained results are shown in Table 3. Even when the polyoxyethylene hydrogenated castor oil ether represented by the general formula (2) is used as the surfactant, as in the case of the polyoxyalkylene alkyl ether represented by the general formula (1), the acrylamide-sodium acrylate copolymer is used. Vivid whitening of the hydrogel of the polymer was possible.
Claims (4)
（B）水、
（C）一般式（１）で示されるポリオキシアルキレンアルキルエーテル、
Ｒは、分岐状の炭素数１０〜１８のアルキル基、ｎは５又は６の整数、ｍは０〜２の整数、及びｎ＋ｍ＝５又は６である。）
及び／又は一般式（２）で示されるポリオキシエチレン硬化ひまし油エーテル
を含有することを特徴とする、含水ゲル。 (A) a water absorbent resin containing an acrylamide / acrylic acid copolymer,
(B) water,
(C) a polyoxyalkylene alkyl ether represented by the general formula (1),
And / or polyoxyethylene hydrogenated castor oil ether represented by the general formula (2)
A water-containing gel, comprising:
一般式（１）において、Ｒは直鎖状の炭素数１３のアルキル基、ｎは５〜８の整数、ｍは０〜２の整数、及びｎ＋ｍ＝５〜８を満たすポリオキシアルキレンアルキルエーテル；及び／又は
一般式（２）で示されるポリオキシエチレン硬化ひまし油エーテル
である、請求項１に記載の含水ゲル。 (C) component is
In the general formula (1), R is a linear alkyl group having 13 carbon atoms, n is an integer of 5 to 8, m is an integer of 0 to 2, and polyoxyalkylene alkyl ether satisfying n + m = 5 to 8; The hydrogel according to claim 1, which is a polyoxyethylene hydrogenated castor oil ether represented by the general formula (2).
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