JP7367933B2 - 光カチオン硬化性組成物 - Google Patents
光カチオン硬化性組成物 Download PDFInfo
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- JP7367933B2 JP7367933B2 JP2020010773A JP2020010773A JP7367933B2 JP 7367933 B2 JP7367933 B2 JP 7367933B2 JP 2020010773 A JP2020010773 A JP 2020010773A JP 2020010773 A JP2020010773 A JP 2020010773A JP 7367933 B2 JP7367933 B2 JP 7367933B2
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- Prior art keywords
- acid
- photoacid generator
- curable composition
- dissociation constant
- water
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims description 74
- 239000002253 acid Substances 0.000 claims description 99
- 238000010494 dissociation reaction Methods 0.000 claims description 53
- 230000005593 dissociations Effects 0.000 claims description 53
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- 239000000178 monomer Substances 0.000 claims description 43
- 150000001875 compounds Chemical class 0.000 claims description 31
- 150000001450 anions Chemical group 0.000 claims description 27
- 239000000945 filler Substances 0.000 claims description 16
- 239000004593 Epoxy Substances 0.000 claims description 14
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical group I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 14
- 125000002091 cationic group Chemical group 0.000 claims description 13
- 239000002530 phenolic antioxidant Substances 0.000 claims description 11
- 239000003504 photosensitizing agent Substances 0.000 claims description 9
- 150000002921 oxetanes Chemical class 0.000 claims description 7
- 150000007942 carboxylates Chemical class 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- -1 hydrogen ions Chemical class 0.000 description 56
- 238000001723 curing Methods 0.000 description 26
- 239000001257 hydrogen Substances 0.000 description 24
- 229910052739 hydrogen Inorganic materials 0.000 description 24
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 24
- 238000003860 storage Methods 0.000 description 20
- 238000001879 gelation Methods 0.000 description 18
- 239000000463 material Substances 0.000 description 16
- 238000006116 polymerization reaction Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
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- 150000001768 cations Chemical class 0.000 description 11
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- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 9
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- 238000000354 decomposition reaction Methods 0.000 description 8
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 6
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 6
- 125000000524 functional group Chemical group 0.000 description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 5
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- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 5
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
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- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
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- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
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- 150000001412 amines Chemical class 0.000 description 3
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 3
- 239000005548 dental material Substances 0.000 description 3
- OZLBDYMWFAHSOQ-UHFFFAOYSA-N diphenyliodanium Chemical compound C=1C=CC=CC=1[I+]C1=CC=CC=C1 OZLBDYMWFAHSOQ-UHFFFAOYSA-N 0.000 description 3
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- CGGPPTKPILLONI-UHFFFAOYSA-N (4-methyl-4-propan-2-ylcyclohexa-1,5-dien-1-yl)-phenyliodanium Chemical compound C1=CC(C(C)C)(C)CC=C1[I+]C1=CC=CC=C1 CGGPPTKPILLONI-UHFFFAOYSA-N 0.000 description 2
- VQVGJEIVVJBMCV-UHFFFAOYSA-N (4-octoxyphenyl)-phenyliodanium Chemical compound C1=CC(OCCCCCCCC)=CC=C1[I+]C1=CC=CC=C1 VQVGJEIVVJBMCV-UHFFFAOYSA-N 0.000 description 2
- MHMPFHGJSJOKIV-UHFFFAOYSA-N (4-phenoxyphenyl)-phenyliodanium Chemical compound C=1C=C([I+]C=2C=CC=CC=2)C=CC=1OC1=CC=CC=C1 MHMPFHGJSJOKIV-UHFFFAOYSA-N 0.000 description 2
- RGXLDQDGZYZGEE-UHFFFAOYSA-N (4-tert-butylphenyl)-phenyliodanium Chemical compound C1=CC(C(C)(C)C)=CC=C1[I+]C1=CC=CC=C1 RGXLDQDGZYZGEE-UHFFFAOYSA-N 0.000 description 2
- AGIQIOSHSMJYJP-UHFFFAOYSA-N 1,2,4-Trimethoxybenzene Chemical compound COC1=CC=C(OC)C(OC)=C1 AGIQIOSHSMJYJP-UHFFFAOYSA-N 0.000 description 2
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- OHBQPCCCRFSCAX-UHFFFAOYSA-N 1,4-Dimethoxybenzene Chemical compound COC1=CC=C(OC)C=C1 OHBQPCCCRFSCAX-UHFFFAOYSA-N 0.000 description 2
- LPHQUKCANLSJRU-UHFFFAOYSA-N 1,8-dimethylphenanthrene Chemical compound C1=CC2=C(C)C=CC=C2C2=C1C(C)=CC=C2 LPHQUKCANLSJRU-UHFFFAOYSA-N 0.000 description 2
- BVQVLAIMHVDZEL-UHFFFAOYSA-N 1-phenyl-1,2-propanedione Chemical group CC(=O)C(=O)C1=CC=CC=C1 BVQVLAIMHVDZEL-UHFFFAOYSA-N 0.000 description 2
- ICKWICRCANNIBI-UHFFFAOYSA-N 2,4-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=C(O)C(C(C)(C)C)=C1 ICKWICRCANNIBI-UHFFFAOYSA-N 0.000 description 2
- NJWGQARXZDRHCD-UHFFFAOYSA-N 2-methylanthraquinone Chemical compound C1=CC=C2C(=O)C3=CC(C)=CC=C3C(=O)C2=C1 NJWGQARXZDRHCD-UHFFFAOYSA-N 0.000 description 2
- LMIOYAVXLAOXJI-UHFFFAOYSA-N 3-ethyl-3-[[4-[(3-ethyloxetan-3-yl)methoxymethyl]phenyl]methoxymethyl]oxetane Chemical compound C=1C=C(COCC2(CC)COC2)C=CC=1COCC1(CC)COC1 LMIOYAVXLAOXJI-UHFFFAOYSA-N 0.000 description 2
- MELPJGOMEMRMPL-UHFFFAOYSA-N 9-oxabicyclo[6.1.0]nonane Chemical compound C1CCCCCC2OC21 MELPJGOMEMRMPL-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
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- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
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- QRMFGEKERJAYSQ-UHFFFAOYSA-N bis(4-chlorophenyl)iodanium Chemical compound C1=CC(Cl)=CC=C1[I+]C1=CC=C(Cl)C=C1 QRMFGEKERJAYSQ-UHFFFAOYSA-N 0.000 description 2
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- MGFYSGNNHQQTJW-UHFFFAOYSA-N iodonium Chemical compound [IH2+] MGFYSGNNHQQTJW-UHFFFAOYSA-N 0.000 description 2
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Description
(a)カチオン重合性単量体、
(b)水中での解離定数が-4以下の酸を発生させる光酸発生剤、及び
(c)水中での解離定数が-3以上の酸を発生させる光酸発生剤
を含んでなる光カチオン硬化性組成物(以下、「本発明の光カチオン硬化性組成物」ともいう。)からなることを特徴とする歯科用硬化性組成物ことを特徴とする光カチオン硬化性組成物である。
ジメチルエーテルの共役酸:-3.8
硫酸:-3.0
メタンスルホン酸:-2.6
硝酸:-1.3
クロロ酢酸:2.86
酢酸:4.76
安息香酸:4.20
フェノール:9.95。
(1)前記(a)カチオン重合性単量体が、エポキシ化合物およびオキセタン化合物から選ばれる少なくとも一種の化合物を含むこと。
(2)前記(b)強い光酸発生剤が、ヨードニウム塩であること。
(3)前記(c)弱い光酸発生剤の含有量が、前記(b)強い光酸発生剤1モルに対して0.001~0.9モルであること。
(4)前記(c)弱い光酸発生剤が、陰イオン部位としてカルボキシラートもしくはスルホナートを有するヨードニウム塩であること。
(5)前記(b)強い光酸発生剤が発生させる酸の水中での解離定数と、前記(c)弱い光酸発生剤が発生させる酸の水中での解離定数の差が、7以上であること。
(6)前記光カチオン硬化性組成物が光増感剤を含むこと。
(7)前記光カチオン硬化性組成物が電子供与性化合物を含むこと。
(8)前記光カチオン硬化性組成物がフェノール系酸化防止剤を含むこと。
(9)前記光カチオン硬化性組成物が充填材を含むこと。
(10)前記光カチオン硬化性組成物が歯科用硬化性組成物であること。
本発明の組成物において、重合性成分である(a)カチオン重合性単量体は、光酸発生剤の分解によって生じる酸によって重合する化合物であれば特に限定されず、公知の化合物を用いることができる。
本発明の組成物において、(b)強い酸発生剤は、水中での解離定数が-4以下の酸を発生させるものであれば特に限定されず、公知の化合物を用いることができる。すなわち、ヨードニウム塩等のオニウム塩で、対アニオンが、水中での解離定数が-4以下の酸の共役塩基であるか、カチオンとの相互作用が極めて小さい非配位性アニオンであるものが該当する。(b)強い光酸発生剤は、発生させる酸の水中での解離定数が-5以下であるものが好ましい。発生させる酸の水中での解離定数が-5以下であれば、ジメチルエーテルの共役酸よりも10倍以上強い酸であるため、発生する水素イオンの大部分がカチオン重合性単量体に捕捉され、カチオン重合が速やかに進行する。(b)強い光酸発生剤は、発生させる酸の水中での解離定数が-9以下であるものがより好ましい。最も好ましい(b)強い酸発生剤は、ヨードニウム塩であり、非特許文献1または2に記載の非配位性アニオン(noncoordinating anion、weakly coordinating anion、WCA)を対アニオンとするものである。
本発明の組成物において、(c)弱い発生剤は、水中での解離定数が-3以上の酸を発生させるものであれば特に限定されず、公知の化合物を用いることができる。
KR-470(信越化学工業(株)製)
DPIPB(東京化成工業(株)製)(対アニオンが非配位性アニオン)
DPITS(東京化成工業(株)製)(発生する酸の水中での解離定数:-2.8)
CQ(東京化成工業(株)製)
DMBE(東京化成工業(株)製)
BHT(東京化成工業(株)製)
SDS(東京化成工業(株)製)
重合性単量体に対し各々所定量の光重合開始剤及びその他の配合成分を加え、赤色光下にて攪拌して調製した。
各実施例、比較例で調製した光カチオン硬化性組成物を、7mmφ×1.0mmの孔を有するポリテトラフルオロエチレン製のモールドに充填した。ついで歯科用の光照射器(TOKUSO POWER LITE、(株)トクヤマ社製)を用い、一定時間光照射を行った(照射面における光強度400mW/cm2)。光照射後、直ちに充填物の状態を確認し、組成物全体が硬化しているかどうかを確認した。組成物全体が硬化している場合、硬化体をモールドから取り出し、両端を指でつまんで軽く力を加え、その強度を確認した。光照射後の確認時に未硬化部分がある、もしくは指で軽く力を加えた場合に容易に曲がったり折れたりする場合を硬化不全とし、指で力を加えても曲がったり折れたりしなければ硬化良好とした。まず、上記の試験を照射時間1秒で行い、硬化不全であれば、新たに充填作業から行った上で適宜照射時間を延長し、硬化良好になるまで繰り返し試験を行った。照射時間は1秒、2秒、3秒、5秒、10秒、20秒、40秒、60秒の順で検討を行い、60秒照射しても硬化不全であった場合は×とした。
各実施例、比較例で調製した光カチオン硬化性組成物0.3gを6mL褐色サンプル管瓶に入れ、遮光条件下60℃恒温装置内で保存した。この光カチオン硬化性組成物を、1日、2日、3日、4日、5日、7日、10日、14日、以降7日置きに恒温装置から取り出し、暗所下において室温まで放冷した後、該硬化性組成物の性状を観察した。この際に、光カチオン硬化性組成物が、サンプル管瓶を傾けても全く流動しないゲル状になった時点の日数をゲル化時間とした。30日後でもゲル化しない場合には観察を中止した(>30日と表記)。なお、本試験において、60℃で30日変化が見られなければ、室温で保存した場合には概ね2年以上は保存可能であることが見込まれる。
75質量部のKR-470及び25質量部のOXT-121からなるカチオン重合性単量体100質量部に対して、強い光酸発生剤として1.4質量部のDPIPB(0.138モル)、弱い酸発生剤として0.1質量部のDPITS(0.018ミリモル)、及び光増感剤として0.3質量部のCQを加え、赤色光下にて6時間撹拌した。
配合する強い酸発生剤および弱い酸発生剤を表1に記載したように変化させた以外は実施例1と同様にして組成物を調製し、その硬化性とゲル化までの保存日数を評価した。結果を併せて表1に示した。
配合する強い酸発生剤、弱い酸発生剤、および電子供与体を表2に記載したように変化させた以外は実施例1と同様にして組成物を調製し、その硬化性とゲル化までの保存日数を評価した。結果を表2に示した。
配合する強い酸発生剤、弱い酸発生剤、電子供与体、フェノール系酸化防止剤、および水素イオン捕捉剤を表3に記載したように変化させた以外は実施例1と同様にして組成物を調製し、その硬化性とゲル化までの保存日数を評価した。結果を表3に示した。
Claims (10)
- (a)カチオン重合性単量体、
(b)水中での解離定数が-4以下の酸を発生させる光酸発生剤、及び
(c)水中での解離定数が-3以上の酸を発生させる光酸発生剤
を含んでなる光カチオン硬化性組成物からなる
ことを特徴とする歯科用硬化性組成物。 - 前記(a)カチオン重合性単量体が、エポキシ化合物およびオキセタン化合物から選ばれる少なくとも一種の化合物を含む請求項1に記載の歯科用硬化性組成物。
- 前記(b)水中での解離定数が-4以下の酸を発生させる光酸発生剤が、ヨードニウム塩である請求項1または2に記載の歯科用硬化性組成物。
- 前記(c)水中での解離定数が-3以上の酸を発生させる光酸発生剤の含有量が、前記(b)水中での解離定数が-4以下の酸を発生させる光酸発生剤1モルに対して0.001~0.9モルである請求項1~3のいずれか1項に記載の歯科用硬化性組成物。
- 前記(c)水中での解離定数が-3以上の酸を発生させる光酸発生剤が、陰イオン部位としてカルボキシラートもしくはスルホナートを有するヨードニウム塩である請求項1~4のいずれか1項に記載の歯科用硬化性組成物。
- 前記(b)水中での解離定数が-4以下の酸を発生させる光酸発生剤が発生させる酸の水中での解離定数と、前記(c)水中での解離定数が-3以上の酸を発生させる光酸発生剤が発生させる酸の水中での解離定数の差が、7以上である請求項1~5のいずれか1項に記載の歯科用硬化性組成物。
- 光増感剤を含む請求項1~6のいずれか1項に記載の歯科用硬化性組成物。
- 電子供与性化合物を含む請求項1~7のいずれか1項に記載の歯科用硬化性組成物。
- フェノール系酸化防止剤を含む請求項1~8のいずれか1項に記載の歯科用硬化性組成物。
- 充填材を含む請求項1~9の何れか1項に記載の歯科用硬化性組成物。
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JP2007131841A (ja) | 2005-10-13 | 2007-05-31 | Tokuyama Corp | 光カチオン硬化性組成物 |
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