JPWO2019189566A1 - 光硬化性樹脂組成物 - Google Patents
光硬化性樹脂組成物 Download PDFInfo
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- JPWO2019189566A1 JPWO2019189566A1 JP2020509313A JP2020509313A JPWO2019189566A1 JP WO2019189566 A1 JPWO2019189566 A1 JP WO2019189566A1 JP 2020509313 A JP2020509313 A JP 2020509313A JP 2020509313 A JP2020509313 A JP 2020509313A JP WO2019189566 A1 JPWO2019189566 A1 JP WO2019189566A1
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- photocurable resin
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- acid ester
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Abstract
Description
[1]ウレタン化(メタ)アクリル化合物(A)、ウレタン結合を含有しないモノ(メタ)アクリル酸エステル化合物(B)、及び光重合開始剤(C)を含有し、
前記ウレタン化(メタ)アクリル化合物(A)が、1分子内に、ポリエステル、ポリカーボネート、ポリウレタン、ポリエーテル、ポリ共役ジエン、及び水添ポリ共役ジエンからなる群より選ばれる少なくとも1種の構造、及びウレタン結合を含有する(メタ)アクリレートであり、
前記ウレタン結合を含有しないモノ(メタ)アクリル酸エステル化合物(B)が、下記の一般式(I)で表されるモノ(メタ)アクリル酸エステル化合物(b−I)、及び下記の一般式(II)で表されるモノ(メタ)アクリル酸エステル化合物(b−II)
からなる群より選ばれる少なくとも1種を含む、光硬化性樹脂組成物。
[2]さらに、(メタ)アクリルアミド化合物(D)を含有する、[1]の光硬化性樹脂組成物。
[3]R4及びR6が水素原子である、[1]又は[2]の光硬化性樹脂組成物。
[4]k及びlが0〜1である、[1]〜[3]のいずれかの光硬化性樹脂組成物。
[5]前記ウレタン結合を含有しないモノ(メタ)アクリル酸エステル化合物(B)が前記モノ(メタ)アクリル酸エステル化合物(b−II)を含有し、Xが酸素原子である、[1]〜[4]のいずれかの光硬化性樹脂組成物。
[6]R2が前記一般式(ii)で表される基である、[5]の光硬化性樹脂組成物。
[7]前記ウレタン結合を含有しないモノ(メタ)アクリル酸エステル化合物(B)が前記モノ(メタ)アクリル酸エステル化合物(b−I)を含有し、R1が前記一般式(i)で表される基である、[1]〜[6]のいずれかの光硬化性樹脂組成物。
[8]光学的立体造形用である、[1]〜[7]のいずれかの光硬化性樹脂組成物。
[9][1]〜[8]のいずれかの光硬化性樹脂組成物の硬化物からなる、マウスガード。
[10][1]〜[8]のいずれかの光硬化性樹脂組成物の硬化物からなる、咬合用スプリント。
[11][1]〜[8]のいずれかの光硬化性樹脂組成物の硬化物からなる、義歯床材。
[12][1]〜[8]のいずれかの光硬化性樹脂組成物を用いて、光学的立体造形法によって立体造形物を製造する方法。
ウレタン化(メタ)アクリル化合物(A)は、本発明の光硬化性樹脂組成物において、光硬化性樹脂組成物の硬化物に、耐水性、衝撃吸収性及び強度を付与するために用いられる。
ウレタン結合を含有しないモノ(メタ)アクリル酸エステル化合物(B)は、本発明の光硬化性樹脂組成物において、光硬化性樹脂組成物を低粘度化でき、硬化物に柔軟性及び耐水性を付与するために用いられる。
本発明に用いられる光重合開始剤(C)は、一般工業界で使用されている重合開始剤から選択して使用でき、中でも歯科用途に使用されている光重合開始剤が好ましい。
本発明の光硬化性樹脂組成物は、さらに(メタ)アクリルアミド化合物(D)を含有することが好ましい。(メタ)アクリルアミド化合物(D)は、(メタ)アクリルアミド骨格を有していれば特に限定されないが、例としては、N,N−ジメチル(メタ)アクリルアミド、N,N−ジエチル(メタ)アクリルアミド、N,N−ジ−n−プロピル(メタ)アクリルアミド、N−イソプロピル(メタ)アクリルアミド、N,N−ジ−n−ブチル(メタ)アクリルアミド、N,N−ジ−n−ヘキシル(メタ)アクリルアミド、N,N−ジ−n−オクチル(メタ)アクリルアミド、N,N−ジ−2−エチルヘキシル(メタ)アクリルアミド、N−(2−ヒドロキシエチル)(メタ)アクリルアミド、N,N−ビス(2−ヒドロキシエチル)(メタ)アクリルアミド、N−アクリロイルモルホリン、N,N−ジメチルアミノエチル(メタ)アクリルアミド、N,N−ジエチルアミノエチル(メタ)アクリルアミド、N,N−ジプロピルアミノエチル(メタ)アクリルアミド、N,N−ジブチルアミノエチル(メタ)アクリルアミド、N,N−ジメチルアミノプロピル(メタ)アクリルアミド、N,N−ジエチルアミノプロピル(メタ)アクリルアミド、N,N−ジプロピルアミノプロピル(メタ)アクリルアミド、N,N−ジブチルアミノプロピル(メタ)アクリルアミド、N,N−ジメチルアミノブチル(メタ)アクリルアミド、N,N−ジエチルアミノブチル(メタ)アクリルアミド、N,N−ジプロピルアミノブチル(メタ)アクリルアミド、N,N−ジブチルアミノブチル(メタ)アクリルアミド等の単官能性(メタ)アクリルアミド化合物が挙げられる。これらは、1種を単独で用いてもよく、2種以上を併用してもよい。これらの中でも、光硬化性樹脂組成物の硬化性及び硬化物の耐破壊性が優れる点で、N,N−ジメチル(メタ)アクリルアミド、N,N−ジエチル(メタ)アクリルアミド、N,N−ジ−n−プロピル(メタ)アクリルアミド、N−イソプロピル(メタ)アクリルアミド、N,N−ジ−n−ブチル(メタ)アクリルアミド、N−(2−ヒドロキシエチル)(メタ)アクリルアミド、N−アクリロイルモルホリン、N,N−ジメチルアミノエチル(メタ)アクリルアミド、N,N−ジエチルアミノエチル(メタ)アクリルアミド、N,N−ジメチルアミノプロピル(メタ)アクリルアミド、N,N−ジエチルアミノプロピル(メタ)アクリルアミド、N,N−ジメチルアミノブチル(メタ)アクリルアミド、N,N−ジエチルアミノブチル(メタ)アクリルアミドがより好ましく、N,N−ジメチル(メタ)アクリルアミド、N,N−ジエチル(メタ)アクリルアミド、N−(2−ヒドロキシエチル)(メタ)アクリルアミド、N−アクリロイルモルホリン、N,N−ジメチルアミノエチル(メタ)アクリルアミド、N,N−ジエチルアミノエチル(メタ)アクリルアミド、N,N−ジメチルアミノプロピル(メタ)アクリルアミド、N,N−ジエチルアミノプロピル(メタ)アクリルアミドがさらに好ましく、N,N−ジメチルアクリルアミド、N,N−ジエチルアクリルアミド、N−イソプロピルアクリルアミド、N−(2−ヒドロキシエチル)アクリルアミド、N−アクリロイルモルホリン、N,N−ジメチルアミノエチルアクリルアミド、N,N−ジエチルアミノエチルアクリルアミド、N,N−ジメチルアミノプロピルアクリルアミド、N,N−ジエチルアミノプロピルアクリルアミドが特に好ましく、N,N−ジエチルアクリルアミド、N,N−ジメチルアミノプロピルアクリルアミドが最も好ましい。
(1)撹拌機、温度調節器、温度計及び凝縮器を備えた内容積5Lの四つ口フラスコに、イソホロンジイソシアネート250g、及びジラウリル酸ジ−n−ブチルスズ0.15gを添加して、撹拌下に70℃に加熱した。
(2)一方、ポリエステルポリオール(株式会社クラレ製「クラレポリオール(登録商標) P−5010」;アジピン酸と3−メチル−1,5−ペンタンジオールからなる重合体、重量平均分子量Mw5000)2500gを側管付きの滴下漏斗に添加し、この滴下漏斗の液を、上記(1)のフラスコ中に滴下した。なお、上記(1)のフラスコ中の溶液を撹拌しつつ、フラスコの内温を65〜75℃に保持しながら4時間かけて等速で滴下した。さらに、滴下終了後、同温度で2時間撹拌して反応させた。
(3)次いで、別の滴下漏斗に添加した2−ヒドロキシエチルアクリレート150gとヒドロキノンモノメチルエーテル0.4gとを均一に溶解させた液をフラスコの内温を55〜65℃に保持しながら2時間かけて等速で滴下した後、フラスコ内の溶液の温度を70〜80℃に保持しながら4時間反応させることにより、ウレタン化(メタ)アクリル化合物(A−1)を得た。
(1)撹拌機、温度調節器、温度計及び凝縮器を備えた内容積5Lの四つ口フラスコに、イソホロンジイソシアネート250g、及びジラウリル酸ジ−n−ブチルスズ0.15gを添加して、撹拌下に70℃に加熱した。
(2)一方、ポリカーボネートポリオール(株式会社クラレ製「クラレポリオール(登録商標) C−1090」;1,6−ヘキサンジオール/3−メチル−1,5−ペンタンジオール=9/1(質量比)からなる重合体、重量平均分子量Mw1000)500gを側管付きの滴下漏斗に添加し、この滴下漏斗の液を、上記(1)のフラスコ中に滴下した。なお、上記(1)のフラスコ中の溶液を撹拌しつつ、フラスコの内温を65〜75℃に保持しながら4時間かけて等速で滴下した。さらに、滴下終了後、同温度で2時間撹拌して反応させた。
(3)次いで、別の滴下漏斗に添加した2−ヒドロキシエチルアクリレート150gとヒドロキノンモノメチルエーテル0.4gとを均一に溶解させた液をフラスコの内温を55〜65℃に保持しながら2時間かけて等速で滴下した後、フラスコ内の溶液の温度を70〜80℃に保持しながら4時間反応させることにより、ウレタン化(メタ)アクリル化合物(A−2)を得た。
(1)撹拌機、温度調節器、温度計及び凝縮器を備えた内容積5Lの四つ口フラスコに、2,4−トリレンジイソシアネート195g、及びジラウリル酸ジ−n−ブチルスズ0.15gを添加して、撹拌下に70℃に加熱した。
(2)一方、ポリブチレングリコール(日油株式会社製「ユニオール(登録商標)PB−1000」、重量平均分子量Mw1000)1250gを側管付きの滴下漏斗に添加し、この滴下漏斗の液を、上記(1)のフラスコ中に滴下した。なお、上記(1)のフラスコ中の溶液を撹拌しつつ、フラスコの内温を65〜75℃に保持しながら4時間かけて等速で滴下した。さらに、滴下終了後、同温度で2時間撹拌して反応させた。
(3)次いで、別の滴下漏斗に添加した2−ヒドロキシエチルアクリレート150gとヒドロキノンモノメチルエーテル0.4gとを均一に溶解させた液をフラスコの内温を55〜65℃に保持しながら2時間かけて等速で滴下した後、フラスコ内の溶液の温度を70〜80℃に保持しながら4時間反応させることにより、ウレタン化(メタ)アクリル化合物(A−3)を得た。
5LのSUSオートクレーブ中、空気雰囲気下でイソホロンジイソシアネート390gと、アルミキレートM(アルミニウムアルキルアセトアセテートジイソプロピレート)3.5gと、2−ヒドロキシエチルアクリレート200gを混合し、60℃にて1時間反応させ、反応物Aを合成した。次に、空気雰囲気下にて、先に合成した反応物A600gと、末端を水酸基で変性した水素添加ポリブタジエン(日本曹達株式会社製「GI−1000」、数平均分子量Mn1500、Mw/Mn1.15、1,2−結合単位の含有率(1,2−結合単位と1,4−結合単位の合計モル数に対する1,2−結合単位のモル数の割合)7モル%、ヨウ素価測定による水素添加率96モル%)1500gと、アルミキレートM12.0gを混合し、60℃にて2時間反応させた。反応液をトルエン1Lで希釈した後、蒸留水0.5Lで3回洗浄、蒸留水/メタノールの50/50(体積比)の溶媒で再沈殿し、減圧乾燥して、ウレタン化(メタ)アクリル化合物(A−4)を得た。
POBA:m−フェノキシベンジルアクリレート(共栄社化学株式会社製)
EPPA:エトキシ化−o−フェニルフェノールアクリレート(新中村化学工業株式会社製)
TPO:2,4,6−トリメチルベンゾイルジフェニルホスフィンオキシド
BAPO:ビス(2,4,6−トリメチルベンゾイル)フェニルホスフィンオキシド
DEAA:N,N−ジエチルアクリルアミド(KJケミカルズ株式会社製)
ACMO:N−アクリロイルモルホリン(KJケミカルズ株式会社製)
BHT:3,5−ジ−t−ブチル−4−ヒドロキシトルエン
表1及び表2に示す分量で各成分を常温(20℃±15℃、JIS(日本工業規格) Z 8703:1983)下で混合して、実施例1〜7及び比較例1〜4に係る光硬化性樹脂組成物としてのペーストを調製した。
各実施例及び各比較例に係る光硬化性樹脂組成物について、光造形機(DWS社製 DIGITALWAX(登録商標) 028J−Plus)を用いて厚さ2mm×長さ11cm×幅5cmのシートの造形を行った。寸法通りのシートが造形可能であった場合を造形可能「○」とし、造形物が得られなかった場合を造形不可「×」とした。なお、造形されたシートを用いて後述の各評価を行った。
各実施例及び各比較例に係る光硬化性樹脂組成物の硬化物について、上記のシートを2枚重ね厚さ4mmの試験片とした。その試験片を用いて、JIS K 7215:1986に基づいて、タイプAデュロメータ(高分子計器株式会社 アスカーゴム硬度計A型 製造番号32330)で23℃における硬化物の硬度(A硬度)を測定し、柔軟性の指標とした。結果を表1及び表2にそれぞれ示す。この測定において、23℃におけるA硬度が70〜85である場合、その硬化物は柔軟性が優れるといえる。
衝撃吸収性は落下衝撃試験によって測定した。各実施例及び各比較例に係る光硬化性樹脂組成物の硬化物について、ストーンテーブル上に、上記のシートを2枚重ねて厚さ4mmとし、φ3/8インチ(3.58g)の鋼球を、高さ50cmから自然落下させて、その跳ね返った高さを測定し、反発係数を算出した。反発係数の計算式を次式に示す。反発係数が30以下であると、衝撃吸収性に優れる。
反発係数=〔跳ね返った高さ(cm)/50(cm)〕×100
各実施例及び各比較例に係る光硬化性樹脂組成物の硬化物について、上記のシートからJIS K 6252−1:2015(加硫ゴム及び熱可塑性ゴム−引裂強さの求め方)に記載されているトラウザ形試験片と同じ寸法の試験片を打抜き刃にて作製した。作製した試験片を用い、試験スピード500mm/minにて引張試験を行った。この試験による引裂強さが20kN/m以上であると耐破壊性に優れる。
各実施例及び各比較例に係る光硬化性樹脂組成物の硬化物について、上記のシートからJIS K 6251:2010(加硫ゴム及び熱可塑性ゴム−引張特性の求め方)に記載されているダンベル状8号形試験片と同じ寸法の試験片を打抜き刃にて作製した。作製した試験片を用い、試験スピード500mm/minにて引張試験を行った。この試験による引張強さが5.0MPa以上かつ引張伸度(切断時伸び)50%以上であると耐破壊性に優れる。
各実施例及び各比較例に係る光硬化性樹脂組成物の硬化物について、37℃水中浸漬24時間後、上記と同様に、引裂強さ及び引張強さを測定した。初期の引裂強さ及び引張強さに対する、37℃水中浸漬24時間後の引裂強さ及び引張強さの変化率(低下率)が10%以下であれば耐水性に優れる。
引裂強さの変化率(%)=〔{初期の引裂強さ(kN/m)−水中浸漬後の引裂強さ(kN/m)}/初期の引裂強さ(kN/m)〕×100
引張強さの変化率(%)=〔{初期の引張強さ(MPa)−水中浸漬後の引張強さ(MPa)}/初期の引張強さ(MPa)〕×100
Claims (12)
- ウレタン化(メタ)アクリル化合物(A)、ウレタン結合を含有しないモノ(メタ)アクリル酸エステル化合物(B)、及び光重合開始剤(C)を含有し、
前記ウレタン化(メタ)アクリル化合物(A)が、1分子内に、ポリエステル、ポリカーボネート、ポリウレタン、ポリエーテル、ポリ共役ジエン、及び水添ポリ共役ジエンからなる群より選ばれる少なくとも1種の構造、及びウレタン結合を含有する(メタ)アクリレートであり、
前記ウレタン結合を含有しないモノ(メタ)アクリル酸エステル化合物(B)が、下記の一般式(I)で表されるモノ(メタ)アクリル酸エステル化合物(b−I)、及び下記の一般式(II)で表されるモノ(メタ)アクリル酸エステル化合物(b−II)
からなる群より選ばれる少なくとも1種を含む、光硬化性樹脂組成物。 - さらに、(メタ)アクリルアミド化合物(D)を含有する、請求項1に記載の光硬化性樹脂組成物。
- R4及びR6が水素原子である、請求項1又は2に記載の光硬化性樹脂組成物。
- k及びlが0〜1である、請求項1〜3のいずれか1項に記載の光硬化性樹脂組成物。
- 前記ウレタン結合を含有しないモノ(メタ)アクリル酸エステル化合物(B)が前記モノ(メタ)アクリル酸エステル化合物(b−II)を含有し、Xが酸素原子である、請求項1〜4のいずれか1項に記載の光硬化性樹脂組成物。
- R2が前記一般式(ii)で表される基である、請求項5に記載の光硬化性樹脂組成物。
- 前記ウレタン結合を含有しないモノ(メタ)アクリル酸エステル化合物(B)が前記モノ(メタ)アクリル酸エステル化合物(b−I)を含有し、R1が前記一般式(i)で表される基である、請求項1〜6のいずれか1項に記載の光硬化性樹脂組成物。
- 光学的立体造形用である、請求項1〜7のいずれか1項に記載の光硬化性樹脂組成物。
- 請求項1〜8のいずれか1項に記載の光硬化性樹脂組成物の硬化物からなる、マウスガード。
- 請求項1〜8のいずれか1項に記載の光硬化性樹脂組成物の硬化物からなる、咬合用スプリント。
- 請求項1〜8のいずれか1項に記載の光硬化性樹脂組成物の硬化物からなる、義歯床材。
- 請求項1〜8のいずれか1項に記載の光硬化性樹脂組成物を用いて、光学的立体造形法によって立体造形物を製造する方法。
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CN111971318A (zh) | 2020-11-20 |
US20210024682A1 (en) | 2021-01-28 |
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