JP6057589B2 - 微粒子及びそれを含む硬化性オルガノポリシロキサン組成物 - Google Patents
微粒子及びそれを含む硬化性オルガノポリシロキサン組成物 Download PDFInfo
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- JP6057589B2 JP6057589B2 JP2012167360A JP2012167360A JP6057589B2 JP 6057589 B2 JP6057589 B2 JP 6057589B2 JP 2012167360 A JP2012167360 A JP 2012167360A JP 2012167360 A JP2012167360 A JP 2012167360A JP 6057589 B2 JP6057589 B2 JP 6057589B2
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- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/14—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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Description
(A)平均単位式:RaSiO(4-a)/2(式中、Rは置換若しくは非置換の一価炭化水素基であり、aは1.0〜2.3の数である)で示され、一分子中に少なくとも平均1.5個のアルケニル基を有するオルガノポリシロキサン、
(B)一分子中に少なくとも平均1.5個のケイ素原子結合水素原子を有するオルガノポリシロキサン、及び
(C)前記微粒子
を含む、硬化性オルガノポリシロキサン組成物によって達成される。
150℃で加熱することにより溶融した、Mzが3600、Mz/Mwが1.17のポリエチレンワックス(BAKER HUGH社製のPOLYWAX(登録商標) 1000)に含有量が0.5重量%となるように白金触媒(塩化白金酸水溶液(白金の含有量=33重量%))を混合、分散させた。この分散物を2流体ノズルを使って、窒素ガスを熱気流にしたスプレードライヤー槽(アシザワ・ニトロ・アトマイザー株式会社製)内に連続して噴霧した。ここで、窒素ガスの熱気流温度はスプレードライヤーの入口で95℃であり、スプレードライヤーの出口で45℃であり、熱気流速度は1.3m3/分であった。1時間の運転後にバッグフィルターによって白金触媒含有ポリエチレンワックス微粒子を捕集した。白金含有量は白金の原子量で換算した。得られた微粒子10gを40gの溶剤に入れて攪拌して洗浄した。溶剤にはイソプロピルアルコール(IPA)を用いた。遠心分離により溶剤を除去したのち、25℃/50%相対湿度(RH)の環境で1週間保管することで乾燥させ、微粒子1を得た。平均粒子径は3.19μmであった。JIS Z 8825−1に規定される方法により平均粒子径を測定した。測定には、レーザー回折/散乱式粒度分布計IA500[ホリバ製作所製]を用いた。
白金含有量を0.2重量%にした以外は参考例1と同様にして、微粒子2を得た。平均粒子径は3.71μmであった。
白金含有量を1.0重量%にした以外は参考例1と同様にして、微粒子3を得た。平均粒子径は3.08μmであった。
白金含有量を0.2重量%にして、且つ、洗浄操作を実施しなかったこと以外は参考例1と同様にして、微粒子4を得た。
平均粒子径が0.99μmである以外は参考例2と同様にして、微粒子5を得た。
洗浄に使用する溶剤をイソプロピルアルコールからエタノールに変更した以外は参考例1と同様にして微粒子6を得た。
Mzが7290、Mz/Mwが1.18であるポリエチレンワックス(BAKER HUGH社製のPOLYWAX(登録商標) 2000)に、白金含有量が0.6重量%となるように白金触媒を添加した以外は、参考例1と同様にして、微粒子7を得た。平均粒子径は4.22μmであった。
Mzが5290、Mz/Mwが2.17であるポリエチレンワックス(三井化学株式会社製のHW100P)に白金含有量が0.5重量%となるように白金触媒を添加した以外は参考例1と同様にして、微粒子8を得た。平均粒子径は2.74μmであった。
白金含有量を0.2重量%にした以外は参考例8と同様にして微粒子9を得た。平均粒子径は2.17μmであった。
Mzが2270、Mz/Mwが1.16であるポリエチレンワックス(BAKER HUGH社製のPOLYWAX(登録商標) 655)に白金含有量が0.4重量%になるように白金触媒を添加した以外は参考例1と同様にして、微粒子10を得た。平均粒子径は、3.61μmであった。
(A−1)成分:25℃における粘度が35000mPa・sである分子鎖両末端ジメチルビニルシロキシ基封鎖ジメチルポリシロキサン73重量%と平均単位式:
[(CH3(CH2=CH)SiO1/2]0.6(SiO4/2)1
で示されるオルガノポリシロキサン27重量%とからなる、25℃における粘度が34000mPa・sであるオルガノポリシロキサン(ビニル基の含有量=0.6重量%)
(B)成分:25℃における粘度が5mPa・sである分子鎖両末端トリメチルシロキシ基封鎖ジメチルシロキサン・メチルハイドロジェンシロキサン共重合体(ケイ素原子結合水素原子の含有量=0.7重量%)
(C−1)成分:参考例1で調製した微粒子1
(C−2)成分:参考例2で調製した微粒子2
(C−3)成分:参考例3で調製した微粒子3
(C−4)成分:参考例4で調製した微粒子4
(C−5)成分:参考例5で調製した微粒子5
(C−6)成分:参考例6で調製した微粒子6
(C−7)成分:参考例7で調製した微粒子7
(C−8)成分:参考例8で調製した微粒子8
(C−9)成分:参考例9で調製した微粒子9
(C−10)成分:参考例10で調製した微粒子10
(C−11)成分:白金の1,3−ジビニルテトラメチルジシロキサン錯体の1,3−ジビニルテトラメチルジシロキサン溶液(白金含有量=4.6重量%)
(D)成分:2−フェニル−3−ブチン−2−オール
(E)成分:平均粒子径2μmの粉砕シリカ微粉末
得られた硬化性オルガノポリシロキサン組成物の硬化特性をJIS K 6300−2に規定される方法により確認した。100℃/60分後のトルクを最大トルクMH(60)としたときにトルク値が10%になるまでの時間を測定し、硬化開始時間とした。測定には、キュラストメーター5型[オリエンテック社製]を用いた。上記硬化開始時間の測定に使用したものと同一の組成物をガラス瓶に入れて密閉し10℃で保管した。6ケ月後に同様の測定を行い、硬化開始時間を調べた。
JIS Z 8803に規定される方法により粘度を測定した。測定にはレオメーターAR−550[TA インスツルメンツ社製]を用いた。ずり速度10(1/S)における粘度(単位はPa・S)を測定した。上記粘度の測定に使用したものと同一の組成物をガラス瓶に入れて密閉し10℃で保管した。6ケ月後に同様の測定を行い、粘度を調べた。
Claims (7)
- 少なくとも一種の白金系触媒、及び
重量平均分子量(Mw)のZ−平均(Mz)が2500以上であり、且つ、Mz/Mwが2.0以下であるポリエチレンワックスを含み、
前記触媒が前記ポリエチレンワックス中に分散している、平均粒子径が0.01〜500μmである微粒子。 - 前記ポリエチレンワックスの融点が40〜200℃である、請求項1に記載の微粒子。
- 前記Mz/Mwが1.2以下である、請求項1又は2に記載の微粒子。
- 前記重量平均分子量(Mw)のZ−平均(Mz)が8500以下である、請求項1から3のいずれか一項に記載の微粒子。
- 前記触媒がヒドロシリル化反応用触媒である、請求項1から4のいずれか一項に記載の微粒子。
- (A)平均単位式:RaSiO(4-a)/2(式中、Rは置換若しくは非置換の一価炭化水素基であり、aは1.0〜2.3の数である)で示され、一分子中に少なくとも平均1.5個のアルケニル基を有するオルガノポリシロキサン、
(B)一分子中に少なくとも平均1.5個のケイ素原子結合水素原子を有するオルガノポリシロキサン、及び
(C)請求項5に記載の微粒子
を含む、硬化性オルガノポリシロキサン組成物。 - 前記(A)成分100重量部に対して0.001〜5重量部の(D)反応抑制剤を更に含む、請求項6に記載の硬化性オルガノポリシロキサン組成物。
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JP2012167360A JP6057589B2 (ja) | 2012-07-27 | 2012-07-27 | 微粒子及びそれを含む硬化性オルガノポリシロキサン組成物 |
PCT/JP2013/070955 WO2014017671A1 (en) | 2012-07-27 | 2013-07-26 | Microparticles and curable organopolysiloxane composition containing the same |
EP13750398.3A EP2877528B1 (en) | 2012-07-27 | 2013-07-26 | Microparticles and curable organopolysiloxane composition containing the same |
KR20157004837A KR20150039791A (ko) | 2012-07-27 | 2013-07-26 | 마이크로 입자 및 이를 함유하는 경화성 오가노폴리실록산 조성물 |
CN201380044266.XA CN104583297B (zh) | 2012-07-27 | 2013-07-26 | 微粒和包含该微粒的可固化有机聚硅氧烷组合物 |
US14/417,476 US9227183B2 (en) | 2012-07-27 | 2013-07-26 | Microparticles and curable organopolysiloxane composition containing the same |
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JP6656045B2 (ja) | 2016-03-29 | 2020-03-04 | 信越化学工業株式会社 | 担持白金触媒を含有する樹脂組成物、及びそれを用いた熱硬化性オルガノポリシロキサン組成物ならびにその硬化方法 |
JP6699583B2 (ja) | 2017-02-14 | 2020-05-27 | 信越化学工業株式会社 | 付加硬化型シリコーン組成物 |
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US4784879A (en) | 1987-07-20 | 1988-11-15 | Dow Corning Corporation | Method for preparing a microencapsulated compound of a platinum group metal |
US4874667A (en) | 1987-07-20 | 1989-10-17 | Dow Corning Corporation | Microencapsulated platinum-group metals and compounds thereof |
US4766176A (en) | 1987-07-20 | 1988-08-23 | Dow Corning Corporation | Storage stable heat curable organosiloxane compositions containing microencapsulated platinum-containing catalysts |
CA1338201C (en) | 1988-04-08 | 1996-04-02 | Dow Corning Corporation | Method for microencapsulating a compound of a platinum group metal |
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EP0363006A3 (en) | 1988-09-02 | 1991-01-09 | Dow Corning Corporation | A method for curing storage stable organosiloxane compositions containing microencapsulated ingredients |
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US5229363A (en) * | 1991-02-19 | 1993-07-20 | Merck & Co., Inc. | Cyclic hexapeptide compounds |
JP3073884B2 (ja) | 1993-05-10 | 2000-08-07 | 信越化学工業株式会社 | 加熱硬化型シリコーンエラストマー組成物 |
US5494750A (en) * | 1993-05-10 | 1996-02-27 | Shin-Etsu Chemical Co., Ltd. | Heat-curable silicone elastomer composition |
JP3022091B2 (ja) | 1993-09-06 | 2000-03-15 | 信越化学工業株式会社 | 加熱硬化型シリコーンエラストマー組成物 |
US6140446A (en) * | 1997-11-18 | 2000-10-31 | Shin-Etsu Chemical Co., Ltd. | Hydrosilylation catalysts and silicone compositions using the same |
JP3500992B2 (ja) | 1997-11-19 | 2004-02-23 | 信越化学工業株式会社 | オルガノポリシロキサン組成物 |
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US9227183B2 (en) | 2016-01-05 |
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CN104583297B (zh) | 2017-03-29 |
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