JPH03109916A - Desiccant composition - Google Patents
Desiccant compositionInfo
- Publication number
- JPH03109916A JPH03109916A JP1254326A JP25432689A JPH03109916A JP H03109916 A JPH03109916 A JP H03109916A JP 1254326 A JP1254326 A JP 1254326A JP 25432689 A JP25432689 A JP 25432689A JP H03109916 A JPH03109916 A JP H03109916A
- Authority
- JP
- Japan
- Prior art keywords
- desiccant
- weight
- parts
- thermoplastic resin
- compsn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002274 desiccant Substances 0.000 title claims abstract description 48
- 239000000203 mixture Substances 0.000 title claims description 25
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 22
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 14
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims abstract description 8
- 235000019341 magnesium sulphate Nutrition 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000292 calcium oxide Substances 0.000 claims abstract description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 4
- 239000004088 foaming agent Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 238000004898 kneading Methods 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 4
- 239000011347 resin Substances 0.000 abstract description 4
- 239000004604 Blowing Agent Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 27
- 239000002245 particle Substances 0.000 description 13
- 239000005022 packaging material Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 229960003390 magnesium sulfate Drugs 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 235000021355 Stearic acid Nutrition 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 241000234282 Allium Species 0.000 description 1
- 235000002732 Allium cepa var. cepa Nutrition 0.000 description 1
- 239000004156 Azodicarbonamide Substances 0.000 description 1
- 235000011299 Brassica oleracea var botrytis Nutrition 0.000 description 1
- 235000017647 Brassica oleracea var italica Nutrition 0.000 description 1
- 240000003259 Brassica oleracea var. botrytis Species 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000012024 dehydrating agents Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 229940076230 magnesium sulfate monohydrate Drugs 0.000 description 1
- LFCFXZHKDRJMNS-UHFFFAOYSA-L magnesium;sulfate;hydrate Chemical compound O.[Mg+2].[O-]S([O-])(=O)=O LFCFXZHKDRJMNS-UHFFFAOYSA-L 0.000 description 1
- QIGOZTHDQZFDPY-UHFFFAOYSA-L magnesium;sulfate;trihydrate Chemical compound O.O.O.[Mg+2].[O-]S([O-])(=O)=O QIGOZTHDQZFDPY-UHFFFAOYSA-L 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、乾燥剤組成物に関する。[Detailed description of the invention] Industrial applications The present invention relates to desiccant compositions.
従来の技術
従来、食品、医薬品、電子部品、精密機械等のあらゆる
分野において吸湿に起因する酸化等による商品等の品質
劣化を防ぐ目的で、シリカゲル、塩化カルシウム、生石
灰、ゼオライト等の乾燥剤が用いられている。これらの
乾燥剤は、上記用途において粒状あるいは粉末の形態で
紙、不織布等により包装されるか、もしくは、容器等に
封入された状態で、商品と共に包材へ投入されて用いら
れている。その為に、乾燥剤が本来有する優れた吸湿効
果及び吸湿速度が低下したり、乾燥剤の包装材破損によ
る商品への乾燥剤の付着、混入などの問題がしばしば発
生する。Conventional technology Traditionally, desiccant agents such as silica gel, calcium chloride, quicklime, and zeolite have been used in all fields of food, medicine, electronic parts, precision machinery, etc. to prevent quality deterioration of products due to oxidation caused by moisture absorption. It is being In the above-mentioned applications, these desiccants are used in the form of granules or powder, packaged with paper, nonwoven fabric, etc., or sealed in a container, etc., and put into a packaging material together with the product. As a result, problems such as the desiccant's inherent excellent moisture absorption effect and moisture absorption rate are reduced, and the packaging material for the desiccant is damaged, resulting in the desiccant adhering to or contaminating the product, often occur.
また、塩化カルシウム等の潮解性乾燥剤の使用に際して
は、吸湿液化現象による弊害なども問題とされている。Further, when using a deliquescent desiccant such as calcium chloride, there are problems such as adverse effects due to moisture absorption and liquefaction phenomenon.
特開昭６１−２２７８１８号公報は、微多孔性熱可塑性
樹脂シートを乾燥剤の包装材料として用いることにより
、吸湿液化現象による液体漏洩防止を提案している。ま
た、不織布と複合乾燥剤とをサンドイッチ状に包含加工
し乾燥剤とする方法も実施されているが、これらはいず
れもコストアツブ等の欠点がある。JP-A-61-227818 proposes preventing liquid leakage due to moisture absorption and liquefaction by using a microporous thermoplastic resin sheet as a packaging material for a desiccant. In addition, methods have been implemented in which a nonwoven fabric and a composite desiccant are incorporated into a sandwich to form a desiccant, but all of these methods have drawbacks such as high costs.
問題点を解決するための手段
本発明者は、上記問題点を解消若しくは著しく軽減すべ
く鋭意研究を重ねた結果、熱可塑性樹脂にある特定の乾
燥剤を混練することにより、高い吸湿力及び保水力を有
し、しかも飛散性、吸湿性、潮解性による液体漏洩等の
欠点を生じない乾燥剤組成物が得られることを見出し、
本発明を完成したものである。Means for Solving the Problems As a result of extensive research in order to eliminate or significantly reduce the above problems, the present inventor has found that by kneading a specific desiccant into a thermoplastic resin, a thermoplastic resin with high hygroscopicity and retention can be obtained. It has been discovered that a desiccant composition can be obtained that has hydraulic power and does not have drawbacks such as liquid leakage due to scattering, hygroscopicity, and deliquescent properties,
This completes the present invention.
すなわち本発明は、熱可塑性樹脂１００重量部に対し、
式ＭｇＳＯ４ΦｎＨ２０（但しＯ≦ｎ≦３）で表される
硫酸マグネシウム、酸化アルミニウム、酸化バリウム、
酸化カルシウム及び酸化ケイ素の少なくとも一種５〜４
００重量部を含有する乾燥剤組成物に係るものである。That is, in the present invention, for 100 parts by weight of thermoplastic resin,
Magnesium sulfate, aluminum oxide, barium oxide, represented by the formula MgSO4ΦnH20 (O≦n≦3),
At least one of calcium oxide and silicon oxide 5 to 4
00 parts by weight of the desiccant composition.
本発明の最大の特徴は、熱可塑性樹脂を乾燥剤と共に混
練して用いることにあり、それにより得られる乾燥剤組
成物は、フィルム状、シート状、プレート状、更には袋
状、ペレット状、容器状等用途に応じ任意の形状に容易
に加工成型することができる。こうして得られる成型品
は、それ自体乾燥剤であり、しかも包材となり得るもの
である。The greatest feature of the present invention is that the thermoplastic resin is used by kneading it with a desiccant, and the desiccant composition obtained thereby can be in the form of a film, sheet, plate, bag, pellet, etc. It can be easily processed and molded into any shape depending on the purpose, such as a container shape. The molded product thus obtained is itself a desiccant and can also be used as a packaging material.
本発明における熱可塑性樹脂としては、特に限定されず
公知のものを使用できるが、例えばポリエチレン、ポリ
プロピレン、ポリカーボネート、ポリアミド、エチレン
−酢酸ビニル共重合体、エチレン−メタアクリレート共
重合体、ポリ塩化ビニル、ポリスチレン、ポリエステル
、ポリアクリル酸エステル、ポリ塩化ビニリデン等が挙
げられ、これらのうち一種又は二種以上を用いることが
できる。The thermoplastic resin in the present invention is not particularly limited and any known one can be used, such as polyethylene, polypropylene, polycarbonate, polyamide, ethylene-vinyl acetate copolymer, ethylene-methacrylate copolymer, polyvinyl chloride, Examples include polystyrene, polyester, polyacrylic ester, polyvinylidene chloride, and one or more of these can be used.
また、熱可塑性樹脂とともに用いる乾燥剤としては、式
ＭｇＳＯ４・ｎＨ２０（但しＯ≦ｎ≦３）で表される硫
酸マグネシウム、酸化アルミニウム、酸化バリウム、酸
化カルシウム及び酸化ケイ素等が挙げられ、これら乾燥
剤の一種もしくは二種以上を用いることができ、特に前
記樹脂に対して卓越した分散性を有する硫酸マグネシウ
ムが好ましい。また上記乾燥剤は、使用に際して平均粒
子径５０μｍ以下程度の粉末とするのが望ましい。必要
ならば、異なった粒子径のものを混合して用いてもよい
。In addition, examples of the desiccant used with the thermoplastic resin include magnesium sulfate, aluminum oxide, barium oxide, calcium oxide, and silicon oxide represented by the formula MgSO4.nH20 (O≦n≦3). One or more of these can be used, with magnesium sulfate being particularly preferred as it has excellent dispersibility in the resin. Further, it is desirable that the desiccant is in the form of a powder with an average particle size of about 50 μm or less when used. If necessary, particles of different particle sizes may be mixed and used.
本発明において混練する原料の割合は、熱可塑性樹脂１
００重量部に対し、乾燥剤５〜４００重量部程重量部門
であり、用途に応じ適宜選択される。乾燥剤の割合が上
記範囲の場合には、乾燥剤の樹脂中での分散性がよく高
い吸湿性及び保水性を有し、しかも成型適性に優れた乾
燥剤組成物を得ることができる。In the present invention, the ratio of raw materials to be kneaded is 1 part thermoplastic resin, 1 part thermoplastic resin,
00 parts by weight, the desiccant is about 5 to 400 parts by weight, and is appropriately selected depending on the application. When the proportion of the desiccant is within the above range, it is possible to obtain a desiccant composition that has good dispersibility of the desiccant in the resin, has high hygroscopicity and water retention, and has excellent moldability.
本発明の乾燥剤組成物は、」−記熱可塑性樹脂及び乾燥
剤のほかに、発泡剤を原料として加えることもできる。In addition to the thermoplastic resin and the desiccant, the desiccant composition of the present invention can also contain a foaming agent as a raw material.
発泡剤としては、特に限定されず公知のものを広く使用
することができ、例えばアゾイソブチルニトリル、アゾ
ジカルボンアミド、４゜４′−オキシベンゼンスルホニ
ルヒドラジッド等が挙げられ、その使用量は熱可塑性樹
脂１００重量部に対し、０．２〜１０重量部程度とする
のが好ましい。発泡剤の添加により得られる乾燥剤組成
物は、加工され発泡体に成型された場合に、軽量で、発
泡体内部にまで吸湿効果が及ぶために、更に高い吸湿力
をもたすものである。The blowing agent is not particularly limited and a wide variety of known ones can be used, such as azoisobutylnitrile, azodicarbonamide, 4゜4'-oxybenzenesulfonyl hydrazide, etc., and the amount used is determined according to the thermoplastic The amount is preferably about 0.2 to 10 parts by weight per 100 parts by weight of the resin. When the desiccant composition obtained by adding a foaming agent is processed and molded into a foam, it is lightweight and has even higher hygroscopicity because the hygroscopic effect extends to the inside of the foam. .
また、このほか添加剤として公知の可塑剤、安定剤、滑
剤、着色剤等を必要に応じ、本発明の目的を阻害しない
程度に適宜加えてもかまわない。In addition, known additives such as plasticizers, stabilizers, lubricants, colorants, etc. may be added as necessary to an extent that does not impede the object of the present invention.
本発明の乾燥剤組成物の製造方法としては、特に制限は
なく、通常次のような方法で製造することができる。There are no particular restrictions on the method for producing the desiccant composition of the present invention, and the desiccant composition can generally be produced by the following method.
前記熱可塑性樹脂、乾燥剤及びその他の添加剤をミキシ
ングロール等を用い約１００〜３５０℃のもと約５〜４
０分間混練すればよい。また、」二層のようにして得ら
れる本発明の組成物は、押出成型、共押出成型、射出成
型、中空成型、押出コ−ティング成型、架橋発泡成型等
により、任意の形状に加工成型することができ、更に他
の積層材を積層したラミネート体とすることもできる。The thermoplastic resin, desiccant and other additives are mixed using a mixing roll or the like at about 100 to 350°C for about 5 to 40 minutes.
It is sufficient to knead for 0 minutes. Furthermore, the composition of the present invention obtained in a two-layered manner can be processed and molded into any shape by extrusion molding, coextrusion molding, injection molding, hollow molding, extrusion coating molding, crosslinking foam molding, etc. Furthermore, it is also possible to form a laminate body in which other laminate materials are laminated.
このようにして得られる本発明の乾燥剤組成物は、−船
釣な乾燥剤としての用途の他に、有機溶媒中の水分除去
用脱水剤としても利用できるものである。The desiccant composition of the present invention thus obtained can be used not only as a desiccant for ships, but also as a dehydrating agent for removing moisture from organic solvents.
発明の効果
本発明の乾燥剤組成物は、加工が容易で、任意の形状に
成型できる。Effects of the Invention The desiccant composition of the present invention is easy to process and can be molded into any shape.
本発明組成物の成型品は以下の特性を有するものである
。The molded product of the composition of the present invention has the following characteristics.
１）高い吸湿力、保水力を有し、しかも腐食性、飛散性
、吸湿液化現象による液体漏洩もしくは水滴の発生など
を生じないために乾燥剤としての使用上の安全性、安定
性に優れている。1) It has high hygroscopic and water-holding power, and is highly safe and stable when used as a desiccant because it is corrosive, scatters, and does not cause liquid leakage or water droplet generation due to moisture absorption and liquefaction phenomena. There is.
２）使用時に、従来の乾燥剤のように包装する必要がな
く、また袋状、容器状などの包材として成型されたもの
は、伝相自体が乾燥剤として働き、極めて合理的なもの
である。2) When used, it does not need to be packaged like conventional desiccant agents, and when it is molded into packaging materials such as bags or containers, the denso itself acts as a desiccant agent, making it extremely rational. be.
３）吸湿効果が長時間持続する。3) Moisture absorption effect lasts for a long time.
４）製造及び加工が容易で、優れた工業生産性を有する
。4) Easy to manufacture and process, and has excellent industrial productivity.
５）紫外線吸収に優れている（第１図参照）。5) Excellent ultraviolet absorption (see Figure 1).
以上のように本発明組成物の成型品は、従来の乾燥剤の
概念を変える画期的なもので食品、医薬品、化粧品、嗜
好品、精密機械、機械部品等の品質保護のための乾燥剤
又は吸湿性包材等として広範な用途を有するものである
。As described above, the molded product of the composition of the present invention is an epoch-making product that changes the concept of conventional desiccants. Also, it has a wide range of uses as a hygroscopic packaging material.
実施例
以下実施例を示し、本発明の特徴とするところをより一
層明確にする。EXAMPLES Examples will be shown below to further clarify the features of the present invention.
実施例１
ポリエチレン（密度０．９２ｇ／ｃ弊）１００重量部、
平均粒子径３０μｍ程度の無水硫酸マグネシウム１９０
重量部及び滑剤としてステアリン酸１重量部を混合し、
実験用ミキシングロールにて１３０°Ｃで１５分間加熱
混練して乾燥剤組成物を得た。この組成物を厚さ２ｍ、
ｍのシートとし、打抜きカッターにて径１０ｒｎｍのペ
レットを作製した。そして、これを試料とし吸水試験を
行った。Example 1 100 parts by weight of polyethylene (density 0.92 g/c),
Anhydrous magnesium sulfate 190 with an average particle size of about 30 μm
parts by weight and 1 part by weight of stearic acid as a lubricant,
A desiccant composition was obtained by heating and kneading at 130° C. for 15 minutes using an experimental mixing roll. This composition was applied to a thickness of 2 m.
A sheet with a diameter of 10 nm was prepared using a punch cutter to produce pellets with a diameter of 10 nm. Then, a water absorption test was conducted using this as a sample.
その結果、吸水率が湿度９０％では６５％と高く、湿度
５０％では３３％、湿度２０％では３％と低くなり、湿
度と吸水率がほぼ比例関係にあることがら調湿コントロ
ール性にも優れていることがわかり、この方面への応用
も可能である。As a result, the water absorption rate is as high as 65% at 90% humidity, 33% at 50% humidity, and as low as 3% at 20% humidity.Since humidity and water absorption rate are almost proportional, it also improves humidity control. It was found to be excellent, and it is possible to apply it in this field.
実施例２
エチレン−酢酸ビニル共重合体（平均分子量３１０００
）１００重量部、平均粒子径１０．ｃｚｍ程度の無水硫
酸マグネシウム５０重量部及び滑剤としてステアリン酸
１重量部を混合し、以下実施例１と同様にして乾燥剤組
成物を得、シートを試作後、プレスロールを用いポリエ
チレン（平均分子ｆｆ１２８０００）とアルミニウム箔
でラミネートし、厚さ０．１ｍｍのシートとし、加工し
て包装用袋を作製した。これを試料とし吸水試験を行っ
た。 また、この袋にネギ、ブロッコリー等の野菜を炭
酸ガスとともに封入し２００Ｃで一週間放置したが、袋
内部には水滴、発汗等の現象は見られず、鮮度保持、吸
湿防止に効果があることが認められた。Example 2 Ethylene-vinyl acetate copolymer (average molecular weight 31,000
) 100 parts by weight, average particle size 10. 50 parts by weight of anhydrous magnesium sulfate of about czm and 1 part by weight of stearic acid as a lubricant were mixed to obtain a desiccant composition in the same manner as in Example 1. After making a trial sheet, polyethylene (average molecular ff 128,000 ) and aluminum foil to form a sheet with a thickness of 0.1 mm, which was then processed to produce a packaging bag. A water absorption test was conducted using this as a sample. In addition, vegetables such as green onions and broccoli were sealed in this bag with carbon dioxide gas and left at 200C for a week, but no water droplets or sweating were observed inside the bag, indicating that it is effective in maintaining freshness and preventing moisture absorption. was recognized.
実施例３
エチレン−メチルメタクリレート（平均分子量３５００
０）１００重量部、平均粒子径６μｍ程度の硫酸マグネ
シウム３水塩・１０重量部及び滑剤としてステアリン酸
１重量部を混合し、以下実施例１と同様にして乾燥剤組
成物を得、ベレットを作製後、押出機にて厚さ０．１．
ｍｍのフィルムを作製し、これを試料として吸水試験を
行った。Example 3 Ethylene-methyl methacrylate (average molecular weight 3500
0) Mix 100 parts by weight of magnesium sulfate trihydrate with an average particle size of about 6 μm and 1 part by weight of stearic acid as a lubricant to obtain a desiccant composition in the same manner as in Example 1. After production, the thickness is 0.1 mm using an extruder.
A film with a diameter of 1 mm was prepared and used as a sample for a water absorption test.
また、このフィルムに２５０〜５００ｎｍの波長の光を
照射し、透過率を求めた結果を第１図に示す。尚、図中
（Ａ）はブランク、（Ｂ）は実施０
例３の試料の透過率曲線を表す。Further, this film was irradiated with light having a wavelength of 250 to 500 nm, and the transmittance was determined. The results are shown in FIG. In the figure, (A) represents a blank, and (B) represents a transmittance curve of the sample of Example 3.
実施例４
ポリスチレン（平均分子量３００００）１００重量部、
平均粒子径３．５μｍの硫酸マグネシウム１水塩（第２
図参照）５重量部及び発泡剤としてアゾイソブチルニト
リル０．５重量部を混合し、以下実施例１と同様に混練
して乾燥剤組成物を得た後、射出成型し発泡体を得た。Example 4 100 parts by weight of polystyrene (average molecular weight 30,000),
Magnesium sulfate monohydrate (secondary
(see figure) and 0.5 parts by weight of azoisobutylnitrile as a blowing agent were mixed and kneaded in the same manner as in Example 1 to obtain a desiccant composition, which was then injection molded to obtain a foam.
これを試料として吸水試験を行った。A water absorption test was conducted using this as a sample.
実施例５
ポリ塩化ビニル（ペースト状、平均分子量１６５０）１
００重量部、平均粒子径１０μｍの無水硫酸マグネシウ
ム２５重量部、可塑剤としてジオクチルフタレート８０
重量部及び安定剤としてステアリン酸亜鉛２重量部を混
合し、実施例３と同様にして乾燥剤組成物を得、厚さ０
．１ｍｍのフィルムを作製し、これを試料として吸水試
験を行った。Example 5 Polyvinyl chloride (paste, average molecular weight 1650) 1
00 parts by weight, 25 parts by weight of anhydrous magnesium sulfate with an average particle size of 10 μm, and 80 parts by weight of dioctyl phthalate as a plasticizer.
parts by weight and 2 parts by weight of zinc stearate as a stabilizer to obtain a desiccant composition in the same manner as in Example 3.
．． A 1 mm film was prepared and used as a sample for a water absorption test.
比較例１及び２
実施例５における無水硫酸マグネシウムの代わりにシリ
カゲル（平均粒子径１３μｍ）或いはゼオライト（平均
粒子径８μｍ）２５重量部を用いて以下同様にフィルム
を作製し、これを試料として吸水試験を行った。Comparative Examples 1 and 2 Films were prepared in the same manner using 25 parts by weight of silica gel (average particle size 13 μm) or zeolite (average particle size 8 μm) instead of anhydrous magnesium sulfate in Example 5, and water absorption tests were conducted using these as samples. I did it.
また、実施例５の場合の吸水率との比較を第３図に示す
。尚、図中（Ａ）は実施例５、（Ｂ）は比較例２、（Ｃ
）は比較例１の試料を用いたものである。Further, a comparison with the water absorption rate in the case of Example 5 is shown in FIG. In the figure, (A) is Example 5, (B) is Comparative Example 2, and (C
) uses the sample of Comparative Example 1.
［吸水試験］
」−記実施例１〜５、比較例１及び２で作製した試料を
それぞれ温度２５℃、湿度９０．５０．２０％の恒温槽
中に放置し、１．２．４．６．１０．１５．２０日後の
吸水率を測定した。[Water Absorption Test] - The samples prepared in Examples 1 to 5 and Comparative Examples 1 and 2 were left in a constant temperature bath at a temperature of 25°C and a humidity of 90.50.20%, and 1.2.4.6 .10.15.The water absorption rate was measured after 20 days.
吸水率は、試験前の試料自重に対する試験後の試料重量
の増加量を百分率で計算したものである。The water absorption rate is calculated as the percentage increase in the weight of the sample after the test relative to the weight of the sample before the test.
その結果として、湿度９０％のもののは第１表、■ ■ 湿度５０％のものは第２表、 湿度２０％のものは 第３表に示す。As a result, those with humidity of 90% are shown in Table 1, ■ ■ For those with humidity of 50%, see Table 2. 20% humidity It is shown in Table 3.
弗
表
３
Ｚ
４
卯
３
表
実施例６
低密度ポリエチレン（ＬＤＰＥ：密度０．９２ｇ ／
ｃｉ、以下同様）１００重量部及び平均粒子径４．５９
μｍの無水硫酸マグネシウム５０重量部を混練押出成型
機を用いて、１３０℃で１５分間ら
加熱混練してペレット状のものを得た。これをインフレ
ーション成型機により外層を高密度ポリエチレン（ＨＤ
ＰＥ：密度０．９５ｇ／ｃｎｆ、以下同様）、内層をＬ
ＤＰＥとして共押出３層フィルム（ＩＩＤＰＥ５０μｍ
／ ５０μｍ／ ＬＤＰＥ１０μｍ）を作成した。弗Table 3 Z 4 Rabbit 3 Table Example 6 Low density polyethylene (LDPE: density 0.92g /
ci, hereinafter the same) 100 parts by weight and average particle size 4.59
Pellets were obtained by heating and kneading 50 parts by weight of anhydrous magnesium sulfate having a particle diameter of 1.5 μm using a kneading extrusion molding machine at 130° C. for 15 minutes. The outer layer is made of high-density polyethylene (HD) using an inflation molding machine.
PE: Density 0.95g/cnf (same below), inner layer L
Coextruded three-layer film (IIDPE 50 μm
/50μm/LDPE10μm) was created.
この３層フィルム（５０Ｘ５０ｍｍ）を試料として温度
２５℃、湿度７５％の条件下で吸水試験を行った。その
結果を第４図中（Ａ）に示す。A water absorption test was conducted using this three-layer film (50 x 50 mm) as a sample under conditions of a temperature of 25° C. and a humidity of 75%. The results are shown in FIG. 4 (A).
実施例７
高重合度ポリアミド（ナイロン６、分子量１６０００）
：１００重量部及び平均粒子径４．５９μｍの無水硫酸
マグネシウム５０重量部を用い、以下実施例６と同様に
して３層フィルム（ＨＤＰＥ５０μｍ１５０μｍ／ＬＤ
ＰＥＩＯμｍ）を作成して吸水試験を行った。その結果
を第４図中（Ｂ）に示す。Example 7 High polymerization degree polyamide (nylon 6, molecular weight 16000)
: 100 parts by weight and 50 parts by weight of anhydrous magnesium sulfate with an average particle size of 4.59 μm, a three-layer film (HDPE 50 μm 150 μm/LD
PEIOμm) was prepared and a water absorption test was conducted. The results are shown in FIG. 4 (B).
第１図は、実施例３におけるフィルムの光透過１ 八
率の曲線である。
第２図は、実施例４で用いた硫酸マグネシウムの粒度分
布測定結果を表す図である。
第３図は、実施例５、比較例１及び２の吸水試験におけ
る経過日数−吸水率曲線図である。
第４図は、実施例６及び７の吸水試験における経過日数
−吸水率曲線図である。
（以 上）
７
昔
く肝 ペ
ｑ呆斗
胃４５目 惰ト ペFIG. 1 is a curve of light transmittance of the film in Example 3. FIG. 2 is a diagram showing the particle size distribution measurement results of magnesium sulfate used in Example 4. FIG. 3 is a graph of elapsed days-water absorption rate curve in the water absorption test of Example 5 and Comparative Examples 1 and 2. FIG. 4 is a graph of elapsed days versus water absorption rate curve in the water absorption test of Examples 6 and 7. (That's all) 7. A long time ago.
Claims (1)
４・ｎＨ＿２Ｏ（但し０≦ｎ≦３）で表される硫酸マグ
ネシウム、酸化アルミニウム、酸化バリウム、酸化カル
シウム及び酸化ケイ素の少なくとも一種５〜４００重量
部を含有する乾燥剤組成物。 ［２］組成物が発泡剤を含有する請求項［１］に記載の
乾燥剤組成物。[Claims] [1] For 100 parts by weight of thermoplastic resin, the formula MgSO_
A desiccant composition containing 5 to 400 parts by weight of at least one of magnesium sulfate, aluminum oxide, barium oxide, calcium oxide, and silicon oxide represented by 4.nH_2O (0≦n≦3). [2] The desiccant composition according to claim [1], wherein the composition contains a foaming agent.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP90109700A EP0400460B1 (en) | 1989-05-23 | 1990-05-22 | Moisture-absorbent compositions |
| US07/526,817 US5078909A (en) | 1989-05-23 | 1990-05-22 | Moisture-absorbent compositions and molded items |
| DE69018312T DE69018312T2 (en) | 1989-05-23 | 1990-05-22 | Moisture absorbent compositions. |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13043189 | 1989-05-23 | ||
| JP1-130431 | 1989-05-23 | ||
| JP1259429A JPH0796092B2 (en) | 1989-05-23 | 1989-10-03 | Desiccant molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03109916A true JPH03109916A (en) | 1991-05-09 |
| JPH0753222B2 JPH0753222B2 (en) | 1995-06-07 |
Family
ID=15034076
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1254326A Expired - Fee Related JPH0753222B2 (en) | 1989-05-23 | 1989-09-28 | Desiccant composition |
| JP1259429A Expired - Lifetime JPH0796092B2 (en) | 1989-05-23 | 1989-10-03 | Desiccant molding |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1259429A Expired - Lifetime JPH0796092B2 (en) | 1989-05-23 | 1989-10-03 | Desiccant molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (2) | JPH0753222B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03109917A (en) * | 1989-05-23 | 1991-05-09 | Tomita Seiyaku Kk | Formed desiccant |
| JPH0595871U (en) * | 1992-06-09 | 1993-12-27 | 佐々木化学薬品株式会社 | Hygroscopic packaging material |
| WO2003090905A1 (en) * | 2002-04-26 | 2003-11-06 | Japan Gore-Tex Inc. | Molded adsorbent and adsorbent unit |
| JP2010517880A (en) * | 2007-02-02 | 2010-05-27 | アルカン グローバル ファーマシューティカル パッケージング インコーポレイテッド | Container for moisture sensitive products |
| JP2010527308A (en) * | 2007-03-29 | 2010-08-12 | マルチソーブ テクノロジーズ インコーポレイティド | Adsorbent composite barrier selection method for packaging applications. |
| WO2011052433A1 (en) * | 2009-10-26 | 2011-05-05 | 日本クラウンコルク株式会社 | Moisture-absorbing resin composition and molded products thereof |
| WO2013011941A1 (en) * | 2011-07-15 | 2013-01-24 | 富田製薬株式会社 | Magnesium sulfate desiccant and method for producing same |
| JP2014091782A (en) * | 2012-11-02 | 2014-05-19 | Hitachi Chemical Co Ltd | Prepreg preservation method, laminate, and laminate packaging material |
| US8853124B2 (en) | 2005-01-21 | 2014-10-07 | Multisorb Technologies, Inc. | Resin bonded sorbent |
| US10793696B2 (en) | 2015-01-23 | 2020-10-06 | Tomita Pharmaceutical Co., Ltd. | Polyolefin composition containing hygroscopic inorganic filler, and molded body using said polyolefin composition |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3474295B2 (en) * | 1995-02-15 | 2003-12-08 | 富士写真フイルム株式会社 | Humidity control / gas absorbing molded product |
| KR19990007916A (en) * | 1995-04-19 | 1999-01-25 | 로버트 아브람스 | Dry material in airtight containers |
| JP2001009985A (en) | 1999-07-02 | 2001-01-16 | Hisamitsu Pharmaceut Co Inc | Packaging bag for sticking agent and packaged sticking agent |
| JP2002347714A (en) * | 2001-05-28 | 2002-12-04 | Asahi Kasei Corp | Method for packaging hygroscopic film |
| EP1323468A1 (en) * | 2001-12-31 | 2003-07-02 | Grace GmbH & Co. KG | Adsorbing material comprised of porous functional solid incorporated in a polymer matrix |
| JP3979542B1 (en) | 2006-08-30 | 2007-09-19 | 佐々木化学薬品株式会社 | Desiccant composition, desiccant molded product, equilibrium humidity control method thereof, and control method of equilibrium humidity maintenance time |
| JP5288934B2 (en) | 2008-08-08 | 2013-09-11 | 三菱鉛筆株式会社 | Liquid applicator |
| JP5388006B2 (en) * | 2009-02-27 | 2014-01-15 | 共同印刷株式会社 | Desiccant-containing multilayer film and electronic device provided with the film |
| JP2011067809A (en) * | 2009-08-31 | 2011-04-07 | Shinten Kogyo Kk | Oil absorbent and method of preserving the same |
| US8785183B2 (en) * | 2010-09-21 | 2014-07-22 | Biogaia Ab | Active plastic material in oil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5277956U (en) * | 1975-12-09 | 1977-06-10 | ||
| JPS6168119A (en) * | 1984-09-11 | 1986-04-08 | Shinryo Air Conditioning Co Ltd | Dehumidifier and dehumidifying method using said dehumidifier |
| JPS61120638A (en) * | 1984-11-16 | 1986-06-07 | Marutani Kakoki Kk | Adsorbing body for charging package |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5441998B2 (en) * | 1972-02-04 | 1979-12-11 | ||
| JPS58163420A (en) * | 1982-03-24 | 1983-09-28 | Toppan Printing Co Ltd | Dryable sheet |
| JPH0753222B2 (en) * | 1989-05-23 | 1995-06-07 | 富田製薬株式会社 | Desiccant composition |
-
1989
- 1989-09-28 JP JP1254326A patent/JPH0753222B2/en not_active Expired - Fee Related
- 1989-10-03 JP JP1259429A patent/JPH0796092B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5277956U (en) * | 1975-12-09 | 1977-06-10 | ||
| JPS6168119A (en) * | 1984-09-11 | 1986-04-08 | Shinryo Air Conditioning Co Ltd | Dehumidifier and dehumidifying method using said dehumidifier |
| JPS61120638A (en) * | 1984-11-16 | 1986-06-07 | Marutani Kakoki Kk | Adsorbing body for charging package |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03109917A (en) * | 1989-05-23 | 1991-05-09 | Tomita Seiyaku Kk | Formed desiccant |
| JPH0595871U (en) * | 1992-06-09 | 1993-12-27 | 佐々木化学薬品株式会社 | Hygroscopic packaging material |
| WO2003090905A1 (en) * | 2002-04-26 | 2003-11-06 | Japan Gore-Tex Inc. | Molded adsorbent and adsorbent unit |
| US7300500B2 (en) | 2002-04-26 | 2007-11-27 | Japan Gore-Tex, Inc. | Adsorbent-formed object and an adsorbent unit |
| US8853124B2 (en) | 2005-01-21 | 2014-10-07 | Multisorb Technologies, Inc. | Resin bonded sorbent |
| JP2010517880A (en) * | 2007-02-02 | 2010-05-27 | アルカン グローバル ファーマシューティカル パッケージング インコーポレイテッド | Container for moisture sensitive products |
| US8524115B2 (en) | 2007-03-29 | 2013-09-03 | Multisorb Technologies, Inc. | Adsorptive composite barriers for packaging applications |
| JP2010527308A (en) * | 2007-03-29 | 2010-08-12 | マルチソーブ テクノロジーズ インコーポレイティド | Adsorbent composite barrier selection method for packaging applications. |
| WO2011052433A1 (en) * | 2009-10-26 | 2011-05-05 | 日本クラウンコルク株式会社 | Moisture-absorbing resin composition and molded products thereof |
| US9205960B2 (en) | 2009-10-26 | 2015-12-08 | Dainichiseika Color & Chemicals Mfg. Co., Ltd. | Moisture-absorbing resin composition and molded product thereof |
| WO2013011941A1 (en) * | 2011-07-15 | 2013-01-24 | 富田製薬株式会社 | Magnesium sulfate desiccant and method for producing same |
| JP5272260B1 (en) * | 2011-07-15 | 2013-08-28 | 富田製薬株式会社 | Magnesium sulfate desiccant and method for producing the same |
| JP2014091782A (en) * | 2012-11-02 | 2014-05-19 | Hitachi Chemical Co Ltd | Prepreg preservation method, laminate, and laminate packaging material |
| US10793696B2 (en) | 2015-01-23 | 2020-10-06 | Tomita Pharmaceutical Co., Ltd. | Polyolefin composition containing hygroscopic inorganic filler, and molded body using said polyolefin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0796092B2 (en) | 1991-05-09 |
| JPH0753222B2 (en) | 1995-06-07 |
| JPH03109917A (en) | 1991-05-09 |
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