JP6013319B2 - ポリロタキサン組成物 - Google Patents
ポリロタキサン組成物 Download PDFInfo
- Publication number
- JP6013319B2 JP6013319B2 JP2013504518A JP2013504518A JP6013319B2 JP 6013319 B2 JP6013319 B2 JP 6013319B2 JP 2013504518 A JP2013504518 A JP 2013504518A JP 2013504518 A JP2013504518 A JP 2013504518A JP 6013319 B2 JP6013319 B2 JP 6013319B2
- Authority
- JP
- Japan
- Prior art keywords
- polyrotaxane
- cyclodextrin
- peg
- antioxidant
- composition
- 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.)
- Expired - Fee Related
Links
- 239000000203 mixture Substances 0.000 title claims description 36
- 229920000858 Cyclodextrin Polymers 0.000 claims description 51
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- 229920001223 polyethylene glycol Polymers 0.000 claims description 39
- 239000003963 antioxidant agent Substances 0.000 claims description 32
- 230000003078 antioxidant effect Effects 0.000 claims description 31
- DOUMFZQKYFQNTF-WUTVXBCWSA-N (R)-rosmarinic acid Chemical group C([C@H](C(=O)O)OC(=O)\C=C\C=1C=C(O)C(O)=CC=1)C1=CC=C(O)C(O)=C1 DOUMFZQKYFQNTF-WUTVXBCWSA-N 0.000 claims description 25
- 150000008442 polyphenolic compounds Chemical class 0.000 claims description 21
- 235000013824 polyphenols Nutrition 0.000 claims description 21
- ZZAFFYPNLYCDEP-HNNXBMFYSA-N Rosmarinsaeure Natural products OC(=O)[C@H](Cc1cccc(O)c1O)OC(=O)C=Cc2ccc(O)c(O)c2 ZZAFFYPNLYCDEP-HNNXBMFYSA-N 0.000 claims description 12
- DOUMFZQKYFQNTF-MRXNPFEDSA-N rosemarinic acid Natural products C([C@H](C(=O)O)OC(=O)C=CC=1C=C(O)C(O)=CC=1)C1=CC=C(O)C(O)=C1 DOUMFZQKYFQNTF-MRXNPFEDSA-N 0.000 claims description 12
- TVHVQJFBWRLYOD-UHFFFAOYSA-N rosmarinic acid Natural products OC(=O)C(Cc1ccc(O)c(O)c1)OC(=Cc2ccc(O)c(O)c2)C=O TVHVQJFBWRLYOD-UHFFFAOYSA-N 0.000 claims description 12
- 239000002202 Polyethylene glycol Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 8
- 229920001450 Alpha-Cyclodextrin Polymers 0.000 claims description 6
- HFHDHCJBZVLPGP-RWMJIURBSA-N alpha-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO HFHDHCJBZVLPGP-RWMJIURBSA-N 0.000 claims description 6
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- 239000001116 FEMA 4028 Substances 0.000 claims description 3
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- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 3
- 229960004853 betadex Drugs 0.000 claims description 3
- GDSRMADSINPKSL-HSEONFRVSA-N gamma-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO GDSRMADSINPKSL-HSEONFRVSA-N 0.000 claims description 3
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- 238000003860 storage Methods 0.000 description 16
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- 238000004519 manufacturing process Methods 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
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- LRBQNJMCXXYXIU-PPKXGCFTSA-N Chinese gallotannin Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 description 4
- ADRVNXBAWSRFAJ-UHFFFAOYSA-N catechin Natural products OC1Cc2cc(O)cc(O)c2OC1c3ccc(O)c(O)c3 ADRVNXBAWSRFAJ-UHFFFAOYSA-N 0.000 description 4
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- 229950001002 cianidanol Drugs 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 235000004515 gallic acid Nutrition 0.000 description 4
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- 239000007788 liquid Substances 0.000 description 4
- WMBWREPUVVBILR-UHFFFAOYSA-N GCG Natural products C=1C(O)=C(O)C(O)=CC=1C1OC2=CC(O)=CC(O)=C2CC1OC(=O)C1=CC(O)=C(O)C(O)=C1 WMBWREPUVVBILR-UHFFFAOYSA-N 0.000 description 3
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
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- 238000005227 gel permeation chromatography Methods 0.000 description 3
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methyl-cyclopentane Natural products CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 3
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- DZAUWHJDUNRCTF-UHFFFAOYSA-N 3-(3,4-dihydroxyphenyl)propanoic acid Chemical compound OC(=O)CCC1=CC=C(O)C(O)=C1 DZAUWHJDUNRCTF-UHFFFAOYSA-N 0.000 description 2
- PZIRUHCJZBGLDY-UHFFFAOYSA-N Caffeoylquinic acid Natural products CC(CCC(=O)C(C)C1C(=O)CC2C3CC(O)C4CC(O)CCC4(C)C3CCC12C)C(=O)O PZIRUHCJZBGLDY-UHFFFAOYSA-N 0.000 description 2
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- REFJWTPEDVJJIY-UHFFFAOYSA-N Quercetin Chemical compound C=1C(O)=CC(O)=C(C(C=2O)=O)C=1OC=2C1=CC=C(O)C(O)=C1 REFJWTPEDVJJIY-UHFFFAOYSA-N 0.000 description 2
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- MWDZOUNAPSSOEL-UHFFFAOYSA-N kaempferol Natural products OC1=C(C(=O)c2cc(O)cc(O)c2O1)c3ccc(O)cc3 MWDZOUNAPSSOEL-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- FAARLWTXUUQFSN-UHFFFAOYSA-N methylellagic acid Natural products O1C(=O)C2=CC(O)=C(O)C3=C2C2=C1C(OC)=C(O)C=C2C(=O)O3 FAARLWTXUUQFSN-UHFFFAOYSA-N 0.000 description 1
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- 238000000746 purification Methods 0.000 description 1
- 235000005875 quercetin Nutrition 0.000 description 1
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- 229940092258 rosemary extract Drugs 0.000 description 1
- 235000020748 rosemary extract Nutrition 0.000 description 1
- 239000001233 rosmarinus officinalis l. extract Substances 0.000 description 1
- 235000005493 rutin Nutrition 0.000 description 1
- IKGXIBQEEMLURG-BKUODXTLSA-N rutin Chemical compound O[C@H]1[C@H](O)[C@@H](O)[C@H](C)O[C@@H]1OC[C@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](OC=2C(C3=C(O)C=C(O)C=C3OC=2C=2C=C(O)C(O)=CC=2)=O)O1 IKGXIBQEEMLURG-BKUODXTLSA-N 0.000 description 1
- ALABRVAAKCSLSC-UHFFFAOYSA-N rutin Natural products CC1OC(OCC2OC(O)C(O)C(O)C2O)C(O)C(O)C1OC3=C(Oc4cc(O)cc(O)c4C3=O)c5ccc(O)c(O)c5 ALABRVAAKCSLSC-UHFFFAOYSA-N 0.000 description 1
- 229960004555 rutoside Drugs 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- 229940033123 tannic acid Drugs 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/04—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers only
- C08G65/06—Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
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- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0012—Cyclodextrin [CD], e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
- C08B37/0015—Inclusion compounds, i.e. host-guest compounds, e.g. polyrotaxanes
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- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0012—Cyclodextrin [CD], e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
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- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/333—Polymers modified by chemical after-treatment with organic compounds containing nitrogen
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- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
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- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/333—Polymers modified by chemical after-treatment with organic compounds containing nitrogen
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Description
架橋ポリロタキサンは、擬ポリロタキサンの両末端に封鎖基を導入したポリロタキサンを複数架橋することで得られる。例えば、擬ポリロタキサンが、両末端に反応性基を有するポリエチレングリコール(以下、「PEG」ともいう)と該PEGを包接するシクロデキストリンとからなる場合、得られる架橋ポリロタキサンは、PEGの直鎖分子上に串刺し状に貫通されているシクロデキストリンが、当該直鎖分子に沿って移動可能(滑車効果)なために、張力が加わっても滑車効果によりその張力を均一に分散させることができる。そのため、架橋ポリロタキサンは、クラックや傷が生じにくいなど、従来の架橋ポリマーにない優れた特性を有する。
特許文献1に開示されている製造方法では、得られたポリロタキサンをジメチルホルムアミド/メタノールの混合溶媒で洗浄した後、ジメチルスルホキシドに溶解し、この溶液を水中に滴下してポリロタキサンを析出させて、遠心分離により固液分離する方法により精製し、架橋ポリロタキサンの特性を低下させる遊離シクロデキストリンを除去している。
本発明の目的は、上記の課題を解決し、保存安定性に優れたポリロタキサン組成物を提供することにある。
以下に、本発明を詳述する。
なお、本明細書において、前記重量平均分子量は、ゲルパーミエーションクロマトグラフィー(GPC)で測定を行い、PEG換算により求められる値である。GPCによってPEG換算による重量平均分子量を測定する際のカラムとしては、例えば、TSKgel SuperAWM−H(東ソー社製)などが挙げられる。
前記PEGの両末端に有する反応性基は、採用する封鎖基の種類により適宜変更することができ、特に限定されないが、水酸基、アミノ基、カルボキシル基、チオール基などが挙げられ、とりわけ、カルボキシル基が好ましい。前記PEGの両末端にカルボキシル基を導入する方法としては、例えば、TEMPO(2,2,6,6−テトラメチル−1−ピペリジニルオキシラジカル)と次亜塩素酸ナトリウムとを用いてPEGの両末端を酸化させる方法などが挙げられる。
なお、本明細書において前記包接率とは、PEGへのシクロデキストリンの最大包接量に対するPEGを包接しているシクロデキストリンの包接量の割合であり、PEGとシクロデキストリンの混合比、水性媒体の種類などを変化させることにより、任意に調整することが出来る。また、前記最大包接量とは、PEG鎖の繰り返し単位2つに対し、シクロデキストリンが1つ包接された最密包接状態とした場合のシクロデキストリンの個数をいう。
これらのポリフェノール系酸化防止剤は、単独で使用してもよいし、二種以上を組み合わせて使用してもよい。
なお、前記ポリフェノール系酸化防止剤の体積平均粒子径は、レーザー回折式粒度分布測定装置により測定することが出来る。
(1)PEGのTEMPO酸化による両末端にカルボキシル基を有するPEGの調製
20L容の反応槽内に、水10Lを加え、PEG(分子量35000)1kg、TEMPO(2,2,6,6−テトラメチル−1−ピペリジニルオキシラジカル)10g、臭化ナトリウム100gを溶解させた。市販の次亜塩素酸ナトリウム水溶液(有効塩素濃度5重量%)500mLを添加し、室温で30分間撹拌した。余った次亜塩素酸ナトリウムを分解させるために、エタノールを500mL添加して反応を終了させた。5Lの塩化メチレンを用いた分液抽出を3回繰り返して無機塩以外の成分を抽出した後、減圧留去にて塩化メチレンを除去し、両末端にカルボキシル基を有するPEG1kgを得た。
調製した両末端にカルボキシル基を有するPEG1kgに水35Lを加え、さらにα−シクロデキストリン4kgを加え、70℃まで加熱し溶解させた。攪拌下、4℃まで冷却し、乳液状に析出した擬ポリロタキサン水性分散体を得た。
調製した擬ポリロタキサン分散体40kgを、噴霧乾燥装置を用いて乾燥し、粉末状の乾燥体4.7kgを得た。なお、乾燥機気流入口温度は165℃、出口温度は90℃であった。
50L容のフラスコ内で、室温でジメチルホルムアミド(DMF)17Lにアダマンタンアミン45gを溶解し、得られた擬ポリロタキサン4.7kgに添加した後、速やかによく振りまぜた。
続いて、BOP試薬(ベンゾトリアゾール−1−イル−オキシ−トリス(ジメチルアミノ)ホスホニウム・ヘキサフルオロフォスフェート)130gをDMF8Lに溶解したものを添加し、速やかによく振りまぜた。
さらに、ジイソプロピルエチルアミン50mLをDMF8Lに溶解したものを添加し、得られた混合液を常温で一晩攪拌した。
得られた混合液をろ過後、得られた残渣に水30kgを加えて攪拌下で70℃まで昇温し、同温度で60分間攪拌して、再度ろ過した。
得られた残渣にポリフェノール系酸化防止剤としてロズマリン酸(ローズマリー抽出物、三菱化学フーズ社製、「RM−21Aベース」)の0.1重量%水溶液300g(ポリロタキサンに対して、ロズマリン酸0.01重量%)を加えてよく混合し、ポリロタキサンとロズマリン酸と水とを含有する混合液とした。得られた混合液を、減圧乾燥機を使用して60℃にて16時間減圧乾燥して、ポリロタキサン組成物3kgを得た。高速液体クロマトグラフ(ウォーターズ社製、「アライアンス2695」)により、得られたポリロタキサンの遊離シクロデキストリンの含有率を測定したところ、8重量%であった。
「(5)ポリロタキサン組成物の調製」において、ロズマリン酸水溶液の濃度を0.5重量%(ポリロタキサンに対して、ロズマリン酸0.05重量%)としたこと以外は、実施例1と同様にポリロタキサン組成物3kgを得た。実施例1と同様にして測定したところ、得られたポリロタキサンの遊離シクロデキストリンの含有率は8重量%であった。
「(5)ポリロタキサン組成物の調製」において、ポリフェノール系酸化防止剤としてロズマリン酸の0.1重量%水溶液300gに代えて、没食子酸の1重量%水溶液300g(ポリロタキサンに対して、没食子酸0.1重量%)を加えたこと以外は、実施例1と同様にポリロタキサン組成物3kgを得た。実施例1と同様にして測定したところ、得られたポリロタキサンの遊離シクロデキストリンの含有率は8重量%であった。
「(5)ポリロタキサン組成物の調製」において、ポリフェノール系酸化防止剤としてロズマリン酸の0.1重量%水溶液300gに代えて、カテキン含有量が5%の茶抽出物(日本葉緑素社製、「カテキングS」)の1重量%水溶液300g(ポリロタキサンに対して、カテキン0.005重量%)を加えたこと以外は、実施例1と同様にポリロタキサン組成物3kgを得た。実施例1と同様にして測定したところ、得られたポリロタキサンの遊離シクロデキストリンの含有率は8重量%であった。
「(5)ポリロタキサン組成物の調製」において、ロズマリン酸の0.1重量%水溶液を添加しなかったこと以外は、実施例1と同様の操作を行い、ポリロタキサンを得た。実施例1と同様にして測定したところ、得られたポリロタキサンの遊離シクロデキストリンの含有率は8重量%であった。
実施例及び参考例で得られたポリロタキサン組成物および比較例で得られたポリロタキサンを40℃の恒温槽に保管し、高速液体クロマトグラフ(ウォーターズ社製、「アライアンス2695」)により30日目、および、120日目の遊離シクロデキストリン含有率を測定した。結果を作製直後のものとともに表1に示した。
Claims (4)
- シクロデキストリンと、前記シクロデキストリンに串刺し状に包接されるポリエチレングリコールと、前記ポリエチレングリコールの両末端に配置され前記シクロデキストリンの脱離を防止する封鎖基とを有するポリロタキサン、並びに、ポリフェノール系酸化防止剤を含有し、
前記ポリフェノール系酸化防止剤は、ロズマリン酸であり、
前記ポリフェノール系酸化防止剤の含有量が、前記ポリロタキサンに対して0.001〜1重量%である
ことを特徴とする乾燥した固体状のポリロタキサン組成物。 - ポリエチレングリコールの分子量が1000〜50万である請求項1記載のポリロタキサン組成物。
- シクロデキストリンは、α−シクロデキストリン、β−シクロデキストリン、および、γ−シクロデキストリンからなる群より選ばれる少なくとも1種である請求項1または2記載のポリロタキサン組成物。
- ポリロタキサンの包接率が6〜60%である請求項1、2または3記載のポリロタキサン組成物。
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