JP6059247B2 - 複合充填材粒子およびそれを調製するためのプロセス - Google Patents
複合充填材粒子およびそれを調製するためのプロセス Download PDFInfo
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- JP6059247B2 JP6059247B2 JP2014546360A JP2014546360A JP6059247B2 JP 6059247 B2 JP6059247 B2 JP 6059247B2 JP 2014546360 A JP2014546360 A JP 2014546360A JP 2014546360 A JP2014546360 A JP 2014546360A JP 6059247 B2 JP6059247 B2 JP 6059247B2
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- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
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- OTARVPUIYXHRRB-UHFFFAOYSA-N diethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](C)(OCC)CCCOCC1CO1 OTARVPUIYXHRRB-UHFFFAOYSA-N 0.000 description 1
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- WHGNXNCOTZPEEK-UHFFFAOYSA-N dimethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](C)(OC)CCCOCC1CO1 WHGNXNCOTZPEEK-UHFFFAOYSA-N 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
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- 230000000977 initiatory effect Effects 0.000 description 1
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- 230000001678 irradiating effect Effects 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
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- 239000000395 magnesium oxide Substances 0.000 description 1
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- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 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
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- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
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- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
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- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- BOQSSGDQNWEFSX-UHFFFAOYSA-N propan-2-yl 2-methylprop-2-enoate Chemical compound CC(C)OC(=O)C(C)=C BOQSSGDQNWEFSX-UHFFFAOYSA-N 0.000 description 1
- LYBIZMNPXTXVMV-UHFFFAOYSA-N propan-2-yl prop-2-enoate Chemical compound CC(C)OC(=O)C=C LYBIZMNPXTXVMV-UHFFFAOYSA-N 0.000 description 1
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- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 description 1
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- 238000005507 spraying Methods 0.000 description 1
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- 125000000542 sulfonic acid group Chemical group 0.000 description 1
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- MUTNCGKQJGXKEM-UHFFFAOYSA-N tamibarotene Chemical compound C=1C=C2C(C)(C)CCC(C)(C)C2=CC=1NC(=O)C1=CC=C(C(O)=O)C=C1 MUTNCGKQJGXKEM-UHFFFAOYSA-N 0.000 description 1
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
- 238000004809 thin layer chromatography 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
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- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- UDUKMRHNZZLJRB-UHFFFAOYSA-N triethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OCC)(OCC)OCC)CCC2OC21 UDUKMRHNZZLJRB-UHFFFAOYSA-N 0.000 description 1
- HHPPHUYKUOAWJV-UHFFFAOYSA-N triethoxy-[4-(oxiran-2-yl)butyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCCC1CO1 HHPPHUYKUOAWJV-UHFFFAOYSA-N 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- UORVGPXVDQYIDP-UHFFFAOYSA-N trihydridoboron Substances B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- VABVBSJQVWITEO-UHFFFAOYSA-N tris[2-(2-methoxyethoxy)ethoxy]silane Chemical compound COCCOCCO[SiH](OCCOCCOC)OCCOCCOC VABVBSJQVWITEO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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- A61K6/70—Preparations for dentistry comprising inorganic additives
- A61K6/71—Fillers
- A61K6/72—Fillers comprising nitrogen-containing compounds
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- A61K6/70—Preparations for dentistry comprising inorganic additives
- A61K6/71—Fillers
- A61K6/74—Fillers comprising phosphorus-containing compounds
- A61K6/75—Apatite
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
- A61K6/807—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising magnesium oxide
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
- A61K6/818—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising zirconium oxide
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
- A61K6/822—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising rare earth metal oxides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
- C03C14/008—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in molecular form
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/30—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/40—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
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Description
(a)1〜1200nmのメジアン粒径(D50)を有する粒状充填材を、付加重合性基および逐次重合性基から選択される反応基をその表面に表出しているコーティング層を粒状充填材の表面に形成するフィルム形成剤を含有するコーティング組成物でコーティングし、それによって、コーティングされた粒状充填材を形成することと、その後またはそれと同時に
(b)任意選択でさらなる架橋剤の存在下で、また任意選択で反応基を表出していないさらなる粒状充填材の存在下で、コーティングされた粒状充填材を凝集させて、コーティングされた粒状充填材の顆粒を提供することであって、該顆粒が、コーティングされた粒状充填材粒子と、少なくとも1つのコーティング層によって互いに隔てられ接続された任意選択のさらなる粒状充填材粒子とを含有し、それによって、少なくとも1つのコーティング層を、反応基および任意選択でさらなる架橋剤を反応させることによって得られる架橋基によって架橋することができることと、
(c)任意選択で、コーティングされた粒状充填材の顆粒を粉砕、分級および/または篩分することと、
(d)任意選択で、コーティングされた粒状充填材の顆粒をさらに架橋することと
を含み、反応基が、反応基および任意選択でさらなる架橋剤を反応させることによって得られる架橋基に変換され、粒状充填材が、体積基準で複合充填材粒子の主成分である、プロセスを提供する。
複合充填材粒子は、本発明によれば、粒状充填材をコーティング組成物でコーティングするステップを含むプロセスによって調製される。
粒状充填材は、たとえば、電子顕微鏡法を使用して、またはMALVERN Mastersizer S装置もしくはMALVERN Mastersizer 2000装置によって取り入れられている従来のレーザー回折粒径測定法を使用して測定される、1〜1200nm、好ましくは10〜1000、さらにより好ましくは20〜800nmのメジアン粒径(D50)を有する。
XrR3−rSiL(I)
XrR2−rSiL’L”(II)
XrSiL’L”L’’’(III)
[式中、
Xは、加水分解性基を表し、
Rは、アルキル基、シクロアルキル基、シクロアルキルアルキル基、アラルキル基またはアリール基を表し、
L、L’、L”およびL’’’は、同一であっても異なっていてもよく、互いに独立に、1つまたは複数の重合性二重結合を含有する有機基を表し、
rは1〜3の整数であり、
これにより、式(I)、(II)および(III)のそれぞれについて、X、R、L、L’、L”およびL’’’の合計は4個である]
のうちの1つの化合物またはその加水分解生成物であり得る、架橋することが可能な重合性配位子をもたらす。
粒状充填材は、コーティング組成物でコーティングされる。コーティング組成物は、粒状充填材の表面にコーティング層を形成するフィルム形成剤を含有し、それによって、コーティングされた粒状充填材を形成し、前記コーティング層はそのコーティング層の表面に反応基を表出し、前記反応基は付加重合性基および逐次重合性基から選択される。フィルム形成剤は、粒状充填材の表面の官能基と共有結合を形成してよい。たとえば、フィルム形成剤は、粒状充填材の表面をシラン化してよい。代替的には、フィルム形成剤は、イオン力またはファン・デル・ワールス力などの非共有結合性相互作用によって、粒状充填材の表面に付着してよい。フィルム形成剤が共有結合を形成する場合、フィルム形成剤がシリル基を担持していることが好ましい。フィルム形成剤が非共有結合力に基づいて付着する場合、粒状充填材は改質剤によって改質されていることが好ましい。
Xは、独立に、OまたはNR2であり、ここでR1、R2およびR3は、独立に、水素原子または置換されていてよいC1〜C8アルキル基を表し、Aは、置換されていてよい1〜40個の炭素原子を有する、置換または非置換の2価の有機残基を表し、これにより、前記有機残基は、1〜6個の酸素原子および/または窒素原子を含有していてよく、Zは、置換または非置換の、飽和した少なくとも3価のC1〜C8炭化水素基、置換または非置換の、飽和した少なくとも3価の環状C3〜C8炭化水素基を表し、nは、少なくとも3である。任意選択で置換された部分R1、R2、R3、AおよびZは、カルボン酸基、リン酸エステル基、ホスホネート基およびスルホン酸基から選択される、1〜6個の酸性基で置換されていてよい]
の1つによって特徴付けられる化合物から選択されてよい、重合性モノマーを含んでよい。
コーティング温度は、特に限定されない。したがって、コーティングステップは、一般に、−20℃〜250℃の温度で実施されてよい。特に、コーティング温度は、0℃〜コーティング組成物の沸点未満の範囲であってよい。好ましくは、分散ステップは、10℃〜150℃の範囲の温度で実施される。分散は、最大で10時間、好ましくは10秒〜1時間の間実施されてよい。
粒状充填材のコーティングの後またはそれと同時に、コーティングされた粒状充填材を凝集させて、コーティングされた粒状充填材の顆粒を提供する。
本発明の複合充填材粒子を、歯科用組成物を調製するために使用することができる。歯科用組成物は、好ましくは歯科用修復材料である。歯科用修復材料は、歯科用複合材、歯科用セメントまたは樹脂強化歯科用セメントから選択されてよい。歯科用複合材は、高充填歯科用複合材、流動性複合材、コンポマー、根管シーラーまたは小窩裂溝封鎖材であってよい。歯科用セメントは、グラスアイオノマーセメントまたは合着用セメントであってよい。
超音波浴中で、粒径D50=0.7μmを有するストロンチウム−アルミニウム−ナトリウム−フッ化物−リン−ケイ酸塩ガラス112.5gを、室温で15分間、200mLのエタノールに分散させる。10mLのエタノール中に溶解した1.6mL(1.6g)の(3−アミノプロピル)トリメトキシシランおよび10mLのエタノールに溶解した1.5mL(1.4g)の3−(トリメトキシシリル)プロピルメタクリラトを、ガラス懸濁液に同時に添加する。添加中、懸濁液を超音波で処理する。添加が完了した後、懸濁液を、室温でさらに30分間超音波で処理する。その後、真空中で溶媒を除去し、残渣を100℃で24時間乾燥することにより、コーティングされた粒状充填材を得る。コーティングされた粒状充填材を180μmの篩を使用することによって篩分する。コーティングされた粒状充填材のメジアン粒径D50は、D50=0.74μmであると決定された。
70mgのイソホレンジアミン(5−アミノ−1,3,3−トリメチルシクロヘキサンメチルアミン)を2.5mLのテトラヒドロフラン(THF)中に溶解する。280mgのビスフェノール−A−ジグリシジルエーテルを2.5mLのTHF中に溶解する。両溶液を5.00gのコーティングされた粒状充填材と混合し、真空中(50mbar)、30℃で溶媒を除去する。得られたコーティングされた粒状充填材の顆粒を、密閉容器中に70℃で5時間保持する。その後、約1.5gの得られた顆粒を10mLのエタノールに添加し、超音波で1時間処理する。複合充填材粒子のメジアン粒径は、D50=3.3μmであると決定された。
77mgのTCD−ジアミン(3(4),8(9)−ビス−(アミノメチル)−トリシクロ[5.2.1.02,6]デカン)を、2.5mLのTHF中に溶解する。280mgのビスフェノール−A−ジグリシジルエーテルを2.5mLのTHF中に溶解する。両溶液を5.00gのコーティングされた粒状充填材と混合し、真空中(50mbar)、30℃で溶媒を除去する。得られたコーティングされた粒状充填材の顆粒を、密閉容器中に70℃で5時間保持する。その後、約1.5gの得られた顆粒を10mLのエタノールに添加し、超音波で1時間処理する。複合充填材粒子のメジアン粒径は、D50=4.5μmであると決定された。
100gの改質された粒子(メジアン粒径D50=1.2μm)(1.5wt.%の3−メタクリロイルプロピルトリメトキシシランおよび1.5wt.%の3−アミノプロピルトリメトキシシランで改質されている)を、磁気撹拌機を使用して規定量のアセトン(表1を参照)と混合した。Epilox(CAS1675−54−3)およびTCDジアミン(CAS68889−71−4)(表1を参照)をこの混合物に添加した。次いで、スプレードライヤーのBuchi製の内部蠕動ポンプおよび二流体ジェットノズル(ノズル直径=1.4mm)を使用して、混合物をスプレードライヤーに注入した(ポンプ率は表1を参照)。アスピレータ効率を100%に設定した。使用したプロセスパラメータを表1に列挙する。凝集した粒子を噴霧乾燥した後、凝集した粒子を300μmの篩を通して篩分し、80℃で24時間乾燥して、上記の手順に従ってメジアン粒径(D50)を測定した。凝集した粒子のメジアン粒径(D50)を、以下の表1に列挙する。
450gの改質された粒子(メジアン粒径D50=1.2μm)(1.5wt.%の3−メタクリロイルプロピルトリメトキシシランおよび1.5wt.%の3−アミノプロピルトリメトキシシランで改質されている)を、ミキサー中に置いた。別個に、規定量のEpilox(CAS1675−54−3)をアセトン(表2を参照)中に溶解し、TCDジアミン(68889−71−4)をこの混合物に添加した(表2を参照)。次いで、二流体Schlickジェットノズル(モデル970/7、ノズルサイズ0.8mm)およびWatson Marlow D323蠕動ポンプを使用して、この混合物をミキサーに注入した。注入プロセス中、規定のrpm(表2を参照)で3翼インペラおよびチョッパーを使用して、粒子を混合した。ジェットノズルに印加した圧力をrpmで表したポンプ速度と共に表2に列挙する。完全に添加した後、得られた粉末をさらなる混合ステップに供してもよい(表2を参照)。混合が完了した後、凝集した粒子を300μmの篩を通して篩分し、80℃で24時間乾燥して、上記の手順に従ってメジアン粒径(D50)を測定した。凝集した粒子のメジアン粒径(D50)を、以下の表2に列挙する。
450gの改質された粒子(メジアン粒径D50=1.0μm)(3.1wt.%の3−メタクリロイルプロピルトリメトキシシランで改質されている)を、ミキサー中に置いた。別個に、磁気撹拌機を使用して、視覚的に均質な混合物が得られるまで、規定量のエトキシル化ビスフェノール−A−ジメタクリレート(EBA)(CAS41637−38−1)を、規定量のトリメチロールプロパントリメタクリレート(TMPTMA)(3290−92−4)および規定量のカルボン酸tert−ブチルペルオキシ2−エチルヘキシルカーボネート(TBPEHC)(CAS34443−12−4)と混合した(表3を参照)。次いで、二流体Schlickジェットノズル(モデル970/7、ノズルサイズ0.8mm)およびWatson Marlow D323蠕動ポンプを使用して、この混合物をミキサーに注入した。注入プロセス中、規定のrpm(表3を参照)で3翼インペラおよびチョッパーを使用して、粒子を混合した。ジェットノズルに印加する圧力を0.3barに設定した。rpmで表した印加したポンプ速度を表3に列挙する。完全に添加した後、インペラおよびチョッパーのrpmについて同一のパラメータを使用して、60秒間、得られた粉末をさらなる混合ステップに供した。混合が完了した後、凝集した粒子を300μmの篩を通して篩分し、80℃で24時間乾燥して、上記の手順に従ってメジアン粒径(D50)を測定した。凝集した粒子のメジアン粒径(D50)を、以下の表3に列挙する。
2gの凝集した粒子を4mLのエタノールに添加し、任意選択で2滴のTween85を添加した。凝集した粒子を、視認可能な均質な混合物が得られるまでこの混合物を振とうすることによって、あらかじめ分散した。次いで、およそ20〜25%のオブスキュレーションに達するまで分散液を撹拌しながら、800mLの水を収容し、2200に設定した撹拌機と1800に設定した超音波プローブとを備えた、Malvern Mastersizer Sの測定セル内に、混合物を添加した。10分間の撹拌下で、測定セル内で超音波プローブからの超音波を印加した後、メジアン粒径(d50)を測定した。超音波は、緩く凝集した粒子を解離させて、これらを凝集した粒子(添加したモノマーによって架橋された粒子)と区別するために印加した。
最大で1.0gの乾燥され篩分された粒子をガラス容器に入れ、10.0gのアセトニトリルを添加した。混合物を実験室用振とう機に1時間置き、浸出性モノマーを抽出した。1時間後、粒子を濾過によって分離し、得られた透明な液体をHPLCに直接注入した。規定量のエトキシル化ビスフェノールAジメタクリレート(EBA)CAS:41637−38−1を含有する標準溶液についての測定を実施して、抽出可能なEBAの量を決定した。抽出可能なモノマーの量を、抽出可能なEBAの量から計算した。モノマーの重合度は、顆粒化に使用されたモノマーの最初の量に対する抽出不可能なモノマーの量を表す。
7.5gの乾燥され篩分された粒子を遠心分離管に入れ、30mLのアセトンを添加した。混合物を実験室用振とう機に20分間置き、次いで、5000rpmで30分間遠心分離した。透明な上清をデカンテーションによって単離した。抽出手順(アセトンの添加、振とう、遠心分離、そしてデカンテーション)をそれぞれ30mlのアセトンを用いて2回繰り返した。デカントした溶液を集めて合わせ、40℃、50mbarでの蒸留によって溶媒を除去した。残存する残渣を重量分析した。残存する残渣は、抽出可能なモノマーの量を表す。測定は2回実施した。モノマーの重合度は、顆粒化に使用されたモノマーの最初の量に対する抽出不可能なモノマーの量を表す。
走査電子顕微鏡法(SEM)による写真を、Zeiss製の超高解像度FESEMを使用して撮影した。
ある量の改質された粒子(ケイ酸ストロンチウムアルミニウムガラスまたはホウケイ酸バリウムアルミニウムガラス−メジアン粒径d50,3および量は表を参照−3.1wt.%の3−メタクリロイルプロピルトリメトキシシランCAS:2530−85−0で改質されている)を、磁気撹拌機または機械式撹拌機を使用して、規定量のアセトン(表4を参照)と混合した。重合性メタクリレートモノマーの混合物(たとえば、ウレタンジメタクリレート、カルボン酸改質ジメタクリレート、トリエチレングリコールジメタクリレート、トリメタクリレート樹脂、ジメタクリレート樹脂、カンファーキノン、エチル−4(ジメチルアミノ)ベンゾエート、ブチル化ヒドロキシルトルエン、UV安定化剤を含む、市販の材料Dyract(登録商標)eXtraのモノマー混合物、表4を参照)を、ラジカル開始剤WAKO V−601(CAS:2589−57−3)と共にこの混合物に添加した。混合物を撹拌によって均質化し、次いで、スプレードライヤーのBuchi製の内部蠕動ポンプおよび二流体ジェットノズル(ノズル直径=1.4mm)を使用して、混合物をスプレードライヤーに注入した(プロセスパラメータは表1を参照)。アスピレータ効率を100%に設定した。使用したプロセスパラメータを表4に列挙する。すべての実験について、キャリアガス(乾燥および微粒化ガス)として窒素を使用した。凝集した粒子を噴霧乾燥した後、凝集した粒子を集めて三つ口丸底フラスコに入れた。フラスコをアルゴンガスで少なくとも5分間パージし、しっかりと密閉した。フラスコを100℃のオーブンに3.3時間入れた。次いで、得られた粒子を180μmの篩を通して篩分し、上記の手順に従ってメジアン粒径(d50,3)を測定した。凝集した粒子のメジアン粒径(d50,3)を、表4に列挙する。モノマーの重合度を、上記の方法1または方法2を使用して決定した。凝集した充填材のSEM写真を図4に示す。
重合性メタクリレートモノマーの混合物(たとえば、ウレタンジメタクリレート、カルボン酸改質ジメタクリレート、トリエチレングリコールジメタクリレート、トリメタクリレート樹脂、ジメタクリレート樹脂、カンファーキノン、エチル−4(ジメチルアミノ)ベンゾエート、ブチル化ヒドロキシルトルエン、UV安定化剤を含む、市販の材料Dyract(登録商標)eXtraのモノマー混合物、またはメタクリレート改質ポリシロキサン、ジメタクリレート樹脂、蛍光顔料、UV安定化剤、安定化剤、カンファーキノン、エチル−4(ジメチルアミノ)ベンゾエートを含む、市販の材料Ceram.Xのモノマー混合物)を、IKA実験室用混練機に入れ、得られる混合物への混練下で顆粒化した充填材とさらなる充填材(表3を参照)とのある量の混合物を分割して添加することによって、ペーストを生成した。充填材を完全に添加した後、さらなる混練ステップを適用し、最終的な配合物中において充填材の好適な分布が確実に生じるようにした。
歯科用複合材料用の充填材の調製を開示しているUS4781940の実施例1に従い、5重量%のA−174シランで処理した100グラムのOX−50シリカを、120グラムの塩化メチレンならびに25グラムのモノマー混合物(以下を含有:61.8wt.%のbis−GMA、6.9wt.%のビスフェノール−Aジメタクリレート、29.4wt.%のトリエチレングリコールジメタクリレートおよび2.0wt.%のラジカル開始剤)を含有する溶液と共に、混合容器に入れる。
SNO−1−92−1: 40gの処理されたOX−50(5wt.%のA−174シラン=γ−メタクリルオキシプロピルトリメトキシシランで処理されている)を48gの塩化メチレンおよび10gの混合物(61.8wt.%のbis−GMA、6.9wt.%のビスフェノール−Aジメタクリレート、29.4wt.%のトリエチレングリコールジメタクリレートおよび2.0wt.%のラジカル開始剤を含有する)と混合した。
SNO−1−74−1: 150gの粉砕されシラン化された歯科用ガラス(ケイ酸ストロンチウムアルミニウムガラス−メジアン粒径d3,50=0,6μmを、78.6gのアセトンおよび22.5gの重合性メタクリレートモノマーの混合物(ウレタンジメタクリレート、カルボン酸改質ジメタクリレート、トリエチレングリコールジメタクリレート、トリメタクリレート樹脂、ジメタクリレート樹脂、カンファーキノン、エチル−4(ジメチルアミノ)ベンゾエート、ブチル化ヒドロキシルトルエン、UV安定化剤を含む、市販の材料Dyract(登録商標)eXtraのモノマー混合物)および0.26gのラジカル開始剤と混合した。
AZI−01−45−01: 250gの粉砕されシラン化された歯科用ガラス(ケイ酸ストロンチウムアルミニウムガラス−メジアン粒径d3,50=0,6μmを、140gのアセトンおよび37.5gの重合性メタクリレートモノマーの混合物(ウレタンジメタクリレート、カルボン酸改質ジメタクリレート、トリエチレングリコールジメタクリレート、トリメタクリレート樹脂、ジメタクリレート樹脂、カンファーキノン、エチル−4(ジメチルアミノ)ベンゾエート、ブチル化ヒドロキシルトルエン、UV安定化剤を含む、市販の材料Dyract(登録商標)eXtraのモノマー混合物)および0.43gのラジカル開始剤と混合した。
Claims (12)
- 本質的に球形の複合充填材粒子を調製するためのプロセスであって、1〜70μmのメジアン粒径(D50)を有する複合充填材粒子を提供するために、
(a)100〜1200nmのメジアン粒径(D50)を有する粒状ガラス充填材を、付加重合性基および逐次重合性基から選択される反応基をその表面に表出しているコーティング層を粒状ガラス充填材の表面に形成するフィルム形成剤を含有するコーティング組成物でコーティングし、それによって、コーティングされた粒状充填材を形成することと、その後またはそれと同時に
(b)コーティングされた粒状充填材を噴霧凝集または成長凝集によって凝集させてコーティングされた粒状充填材の顆粒を提供することであって、該顆粒が、コーティングされた粒状充填材粒子を含有し、それによって、少なくとも1つのコーティング層を、反応基を反応させることによって得られる架橋基によって架橋することができることと
を含み、反応基が、反応基を反応させることによって得られる架橋基に変換され、粒状充填材が、体積基準で複合充填材粒子の主成分である、プロセス。
- さらに、(c)コーティングされた粒状充填材の顆粒を粉砕、分級および/または篩分することを含む、請求項1に記載のプロセス。
- さらに、(d)コーティングされた粒状充填材の顆粒をさらに架橋することを含む、請求項1または請求項2に記載のプロセス。
- 前記反応基が、逐次重合性基から選択される、請求項1乃至3のいずれか1項に記載のプロセス。
- コーティング組成物が、粒状複合充填材と共有結合を形成するフィルム形成剤を含有する、請求項1乃至4のいずれか1項に記載のプロセス。
- 共有結合が、複合充填材の表面のヒドロキシル基とシラン基との反応によって得ることができる、請求項5に記載のプロセス。
- 粒状充填材上のコーティング層の最大厚さが、粒状充填材のメジアン粒子直径(D50)未満である、請求項1乃至6のいずれか1項に記載のプロセス。
- コーティング組成物が、1つまたは複数の重合性モノマーを含む、請求項1乃至7のいずれか1項に記載のプロセス。
- コーティング組成物が、0.0001〜15Pas(23℃)の範囲の動粘度を有する、請求項1乃至8のいずれか1項に記載のプロセス。
- 流動床中で実施される、請求項1乃至9のいずれか1項に記載のプロセス。
- 複合充填材粒子が、2μm〜20μmの範囲のメジアン粒径(D50)を有する、請求項1乃至10のいずれか1項に記載のプロセス。
- 複合充填材粒子をシラン化剤または表面活性剤で処理するステップをさらに含む、請求項1乃至11のいずれか1項に記載のプロセス。
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EP11009866.2A EP2604247A1 (en) | 2011-12-15 | 2011-12-15 | Composite filler particles and process for the preparation thereof |
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PCT/EP2012/005206 WO2013087223A1 (en) | 2011-12-15 | 2012-12-17 | Composite filler particles and process for the preparation thereof |
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2011
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-
2012
- 2012-12-14 US US13/714,803 patent/US9193849B2/en active Active
- 2012-12-17 EP EP21212142.0A patent/EP3984516A1/en active Pending
- 2012-12-17 AU AU2012351112A patent/AU2012351112B2/en active Active
- 2012-12-17 JP JP2014546360A patent/JP6059247B2/ja active Active
- 2012-12-17 CA CA2857204A patent/CA2857204C/en active Active
- 2012-12-17 EP EP12813274.3A patent/EP2790639B1/en active Active
- 2012-12-17 CN CN201280062051.6A patent/CN103998008B/zh active Active
- 2012-12-17 WO PCT/EP2012/005206 patent/WO2013087223A1/en unknown
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2015
- 2015-10-01 US US14/872,557 patent/US10040969B2/en active Active
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AU2012351112A8 (en) | 2014-07-17 |
JP2015500302A (ja) | 2015-01-05 |
AU2012351112A1 (en) | 2014-05-29 |
US20130158157A1 (en) | 2013-06-20 |
US9193849B2 (en) | 2015-11-24 |
CA2857204C (en) | 2020-01-07 |
EP2790639A1 (en) | 2014-10-22 |
AU2012351112B2 (en) | 2017-04-06 |
CN103998008B (zh) | 2017-08-18 |
US20160024334A1 (en) | 2016-01-28 |
EP3984516A1 (en) | 2022-04-20 |
EP2604247A1 (en) | 2013-06-19 |
EP2790639B1 (en) | 2022-01-12 |
CA2857204A1 (en) | 2013-06-20 |
US10040969B2 (en) | 2018-08-07 |
CN103998008A (zh) | 2014-08-20 |
WO2013087223A1 (en) | 2013-06-20 |
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