JP7268354B2 - 光学的立体造形用光硬化性樹脂組成物 - Google Patents
光学的立体造形用光硬化性樹脂組成物 Download PDFInfo
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- JP7268354B2 JP7268354B2 JP2018554950A JP2018554950A JP7268354B2 JP 7268354 B2 JP7268354 B2 JP 7268354B2 JP 2018554950 A JP2018554950 A JP 2018554950A JP 2018554950 A JP2018554950 A JP 2018554950A JP 7268354 B2 JP7268354 B2 JP 7268354B2
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- 239000001530 fumaric acid Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- LNCPIMCVTKXXOY-UHFFFAOYSA-N hexyl 2-methylprop-2-enoate Chemical compound CCCCCCOC(=O)C(C)=C LNCPIMCVTKXXOY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229940119545 isobornyl methacrylate Drugs 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 150000002689 maleic acids Chemical class 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- ZZSKMNCIAKKVRB-UHFFFAOYSA-N morpholin-4-yl-(2-nitrophenyl)methanone Chemical compound [O-][N+](=O)C1=CC=CC=C1C(=O)N1CCOCC1 ZZSKMNCIAKKVRB-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229940117969 neopentyl glycol Drugs 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 description 1
- NWAHZAIDMVNENC-UHFFFAOYSA-N octahydro-1h-4,7-methanoinden-5-yl methacrylate Chemical compound C12CCCC2C2CC(OC(=O)C(=C)C)C1C2 NWAHZAIDMVNENC-UHFFFAOYSA-N 0.000 description 1
- OTLDLKLSNZMTTA-UHFFFAOYSA-N octahydro-1h-4,7-methanoindene-1,5-diyldimethanol Chemical compound C1C2C3C(CO)CCC3C1C(CO)C2 OTLDLKLSNZMTTA-UHFFFAOYSA-N 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- NZIDBRBFGPQCRY-UHFFFAOYSA-N octyl 2-methylprop-2-enoate Chemical compound CCCCCCCCOC(=O)C(C)=C NZIDBRBFGPQCRY-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- GYDSPAVLTMAXHT-UHFFFAOYSA-N pentyl 2-methylprop-2-enoate Chemical compound CCCCCOC(=O)C(C)=C GYDSPAVLTMAXHT-UHFFFAOYSA-N 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical class OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005651 polypropylene glycol dimethacrylate Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229960000380 propiolactone Drugs 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- SJMYWORNLPSJQO-UHFFFAOYSA-N tert-butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(C)(C)C SJMYWORNLPSJQO-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- UFDHBDMSHIXOKF-UHFFFAOYSA-N tetrahydrophthalic acid Natural products OC(=O)C1=C(C(O)=O)CCCC1 UFDHBDMSHIXOKF-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Optics & Photonics (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dentistry (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Dental Preparations (AREA)
- Dental Prosthetics (AREA)
- Polymerisation Methods In General (AREA)
Description
測定装置 ; 東ソー株式会社製 HLC-8220
カラム ; 東ソー株式会社製 TSKガードカラム SuperHZ-L
+東ソー株式会社製 TSKgel SuperHZ 4000
+東ソー株式会社製 TSKgel SuperHZ 3000
+東ソー株式会社製 TSKgel SuperHZ 2000
+東ソー株式会社製 TSKgel SuperHZ 1000
検出器 ; RI(屈折率)、UV(紫外、モニター波長254nm)
測定条件: カラム温度 40℃
溶媒 テトラヒドロフラン
流速 0.35ml/min(Sample側)、0.175ml/min(Ref側)
標準 ;ポリスチレン
試料 ;樹脂固形分換算で0.5重量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(注入量10μl)
前記ポリオール類とα,β-不飽和ポリカルボン酸、飽和ポリカルボン酸類またはそれらの酸無水物等とを縮合させて得られるポリエステルポリオール;並びに、
β-プロピオラクトン、β-ブチロラクトン、γ-ブチロラクトン、γ-バレロラクトン、δ-バレロラクトン、γ-カプロラクトン、及びε-カプロラクトン等のラクトン類を開環重合して得られるポリエステルポリオールが挙げられる。これらポリオールは単独で使用してもよいし、2種以上を併用してもよい。
[ポリエステルポリオールウレタンアクリレート(B1)の合成]
攪拌機、ガス導入管、コンデンサー、及び温度計を備えた1リットルのフラスコに、トリメチロールプロパン136部、ε-カプロラクトン883部を、不活性ガスの存在下で200℃で12時間反応させ、固形分酸価が0.5で、かつ、数平均分子量が1000のポリエステル樹脂(b1)を得た。
次いで、攪拌機、ガス導入管、コンデンサー、及び温度計を備えた別の1リットルのフラスコに、イソホロンジイソシアネート264.5部、ターシャリブチルヒドロキシトルエン1.6部、メトキシハイドロキノン0.1部、及びジブチル錫ジラウレート0.1部を加えた。フラスコ内を70℃に昇温し、そこに、上記で合成したポリエステル樹脂(b1)397.2部を、2時間かけて仕込んだ。仕込み終了後2時間反応を継続し、その後2-ヒドロキシエチルアクリレート138.2部を1時間にわたって滴下し、そのまま70℃で、イソシアネート基を示す2250cm-1の赤外吸収スペクトルが消失するまで反応を継続し、ポリエステルポリオールウレタンアクリレート(B1)を得た。ポリエステルポリオールウレタンアクリレート(B1)の数平均分子量は、3500、重量平均分子量は、8500であった。
[エポキシアクリレート(B2)の合成]
攪拌機、ガス導入管、コンデンサー、及び温度計を備えた1リットルのフラスコに、液状ビスフェノールA型エポキシ樹脂(DIC株式会社製「エピクロン850、エポキシ当量188g/eq.)578.5部、アクリル酸217.5部、及びメトキシハイドロキノン0.1部を仕込んだ。フラスコ内を100℃に昇温した後、そこにトリフェニルホスフィン4質量部を加えた。100℃で10時間反応を行い、エポキシ当量が18,000g/eq.、酸価が0.4mgKOH/g、溶液粘度(酢酸ブチル不揮発分80質量溶液)1.8Pa・sであるエポキシアクリレート(B2)を得た。エポキシアクリレート(B2)の数平均分子量は、1000、重量平均分子量は、1300であった。
[ウレタンアクリレート(B3)の合成]
攪拌機、ガス導入管、コンデンサー、及び温度計を備えた1リットルのフラスコに、イソホロンジイソシアネート124.6部、ターシャリブチルヒドロキシトルエン1.6部、メトキシハイドロキノン0.1部、及びジブチル錫ジラウレート0.1部を加え、フラスコ内を70℃に昇温した。そこに、ペンタエリスリトールトリアクリレート(東亞合成(株)製;アロニックスM-305)673.5部を2時間かけて仕込んだ。仕込み終了後、そのまま70℃で、イソシアネート基を示す2250cm-1の赤外吸収スペクトルが消失するまで反応を継続し、ウレタンアクリレート(B3)を得た。ウレタンアクリレート(B3)の数平均分子量は、1100、重量平均分子量は、2600であった。
固形分酸価は、試料1g中に含有する遊離脂肪酸、樹脂酸などを中和するために必要とする水酸化カリウムのmg数であり、JISK0070-1992で示された下記の測定方法で求めた。
(1)試薬は、次のとおりとする。
・0.1mol/l塩酸
JISK 8001の4.5(5.5)[0.1mol/l塩酸(3.646gHCl/l)]による。
・0.1mol/l水酸化カリウムエタノール溶液
JISK8574に規定する水酸化カリウム7gを5mlの水に溶かし、JISK8102に規定するエタノール(95)を加えて1Lとし、二酸化炭素をさえぎって、2~3日間放置した後、上澄みを取るか又はろ過して耐アルカリ性の瓶に保存する。標定は、0.1mol/l塩酸25mlを全量ピペットを用いて三角フラスコに取り、フェノールフタレイン溶液を加え、0.1mol/l水酸化カリウムエタノール溶液で滴定し、中和に要した量からファクターを求める。
・フェノールフタレイン溶液
JISK8001の4.3(指示薬)による。
・溶剤
JISK8103に規定するジエチルエーテルとJISK8101に規定するエタノール(99.5)を体積比で1:1又は2:1で混合したもの。
これらは、使用直前にフェノールフタレイン溶液を指示薬として数滴加え、0.1mol/l水酸化カリウムエタノール溶液で中和する。
(2)装置及び器具装置及び器具は、次のとおりとする。
・三角フラスコ300ml
・ビュレット25ml
・水浴又は熱板
(3)操作は、次のとおり行う。
・試料を適量三角フラスコに量り取る。
・溶剤100ml及び指示薬としてフェノールフタレイン溶液数滴加え、水浴上で試料が完全に溶けるまで十分に振り混ぜる。
・0.1mol/l水酸化カリウムエタノール溶液で滴定し、指示薬のうすい紅色が30秒間続いたときを終点とする。
(4)計算酸価は、次の式によって算出する。
A=(B×f×5.611)/S
ここで、
A:酸価
B:滴定に用いた0.1mol/l水酸化カリウムエタノール溶液の量(ml)
f:0.1mol/l水酸化カリウムエタノール溶液のファクター
S:試料の質量(g)
5.611:水酸化カリウムの式量56.11×1/10
ゲルパーミエーションクロマトグラフ(GPC)を用い、下記の条件により重量平均分子量及び数平均分子量を得た。
測定装置 ; 東ソー株式会社製 HLC-8220
カラム ; 東ソー株式会社製 TSKガードカラム SuperHZ-L
+東ソー株式会社製 TSKgel SuperHZ 4000
+東ソー株式会社製 TSKgel SuperHZ 3000
+東ソー株式会社製 TSKgel SuperHZ 2000
+東ソー株式会社製 TSKgel SuperHZ 1000
検出器 ; RI(屈折率)、UV(紫外、モニター波長254nm)
測定条件: カラム温度 40℃
溶媒 テトラヒドロフラン
流速 0.35ml/min(Sample側)、0.175ml/min(Ref側)
標準 ;ポリスチレン
試料 ;樹脂固形分換算で0.5重量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(注入量10μl)
表1及び表2に示す配合比で原材料を混合して、実施例1~5及び比較例1、2の光学的立体造形用光硬化性樹脂組成物を得た。
・変性ビスフェノールAジメタクリレート:エチレンオキサイド変性エチレンビスフェノールAジメタクリレート(式(I)においてR1が水素原子、m+nが10である化合物)
・ウレタンアクリレート(B1):合成例1で合成したポリエステルポリオールウレタンアクリレート(B1)
・エポキシアクリレート(B2):合成例2で合成したエポキシアクリレート(B2)
・ウレタンアクリレート(B3):合成例3で合成したウレタンアクリレート(B3)
・TPO:ジフェニル(2,4,6-トリメチルベンゾイル)ホスフィンオキシド(BASF社製、IRGACURE TPO)
2-1.光造形
面露光方式(DLP)の光造形システム(EnvisionTEC社製のDLPプリンター)を用いて光硬化性樹脂組成物で所定の形状の立体造形物を生成した。光造形の積層ピッチは0.05~0.1mm、照射波長400~410nm、光照射時間は1層当たり2~20秒とした。形成された立体造形物を、イソプロパノール中で超音波洗浄した。その後、高圧水銀ランプを用いて、立体造形物の表面及び裏面に積算光量が10000mJ/cm2になるように光照射して、立体造形物を後硬化させた。この方法で以下の各評価用の形状を有する立体造形物を作製した。
各光硬化性樹脂組成物を用いた光造形により、所定のガイド孔を有するサージカルガイドを作製した(積層ピッチ0.05mm、標準光照射時間3~5秒/層)。得られたサージカルガイドのガイド孔に、インプラントドリルの目印となる金属筒を埋め込んだ。その際、孔周辺の割れ及びひびを発生させずに金属筒がスムーズに埋め込まれるか、観察した。
各光硬化性樹脂組成物を用いて、ISO527-1規格準拠のダンベル試験片(標線間距離16mm、厚み2mm、幅3.6mm)を作製した。ダンベル試験片の厚み方向を、光造形の積層方向とした(積層ピッチ0.1mm、標準光照射時間8秒/層)。得られたダンベル試験片を用い、ISO527-1規格に準拠した試験速度1mm/分の引張試験により、弾性率、最大点強度、破断点伸び率、及び破断エネルギーを求めた。引張試験装置として、ビデオ式非接触伸び計を備えた(株)島津製作所製オートグラフを用いた。
Claims (1)
- 光重合性成分及び光重合開始剤を含有し、前記光重合性成分が、
下記式(I):
で表され、R1は水素原子又はメチル基を示し、同一分子中の複数のR1は同一でも異なっていてもよく、m及びnはそれぞれ独立に1以上の整数を示し、m+nが6~40である、変性ビスフェノールAジメタクリレート(A)、
500以上4000以下の数平均分子量を有し2個以上の(メタ)アクリロイル基を有するラジカル反応性オリゴマー(B)、及び、
500未満の分子量を有し1個以上のメタクリロイル基を有するラジカル反応性希釈剤(C)を含み、
前記変性ビスフェノールAジメタクリレート(A)の含有量が30~50質量%で、前記ラジカル反応性オリゴマー(B)の含有量が20~40質量%で、前記ラジカル反応性希釈剤(C)の含有量が20~50質量%であり、
前記ラジカル反応性オリゴマー(B)が、ウレタン(メタ)アクリレートオリゴマー及びエポキシ(メタ)アクリレートオリゴマーを含む、
光学的立体造形用光硬化性樹脂組成物。
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