JPS6136338A - Fine hydrophobic oxide powder and thixotropy imparting agent consisting of said oxide - Google Patents
Fine hydrophobic oxide powder and thixotropy imparting agent consisting of said oxideInfo
- Publication number
- JPS6136338A JPS6136338A JP59157041A JP15704184A JPS6136338A JP S6136338 A JPS6136338 A JP S6136338A JP 59157041 A JP59157041 A JP 59157041A JP 15704184 A JP15704184 A JP 15704184A JP S6136338 A JPS6136338 A JP S6136338A
- Authority
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- Japan
- Prior art keywords
- powder
- methanol
- oxide powder
- wetting
- specific surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Silicon Compounds (AREA)
- Compositions Of Macromolecular Compounds (AREA)
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は有機液体、ことに合成樹脂溶液に、安定に分散
し粘度上昇とチクソトロピー性を付与するのに好適な疎
水性の無機酸化物微粉体を提供するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a hydrophobic inorganic oxide fine powder suitable for stably dispersing and imparting increased viscosity and thixotropy to organic liquids, particularly synthetic resin solutions. It provides the body.
広く合成樹脂工業に於いて無機酸化物微粉体、特にヒユ
ームドシリカは単なる充填剤としてではなく少量の添加
量で特別な効果を得るための価値ある助剤すなわち揺変
付与剤として用いられている。ヒユームドシリカの添加
により得られる効果の中で最も重要なものは合成樹脂液
体系の粘度上昇と揺変性付与である。合成樹脂液体系の
なかでも、とシわけポリエステル樹脂並びにエポキク樹
脂系に有効でガラス繊維強化プラスチツク成型の場合、
刷毛塗り法、スプレー法等によシ漁船、浄化槽等の種々
のものが製作されるが、予め樹脂中にヒユームドシリカ
をある割合で添加しておくともはや樹脂が垂直面でも垂
れ下がることなしに、かなシのms厚に成型することが
可能となる。従って、ヒユームド7リカの添加による揺
変性付与の目的は樹脂の垂直面における垂れを防止する
ことにあると云える。Widely in the synthetic resin industry, inorganic oxide fine powders, in particular fumed silica, are used not only as fillers but also as valuable auxiliaries, ie thixotropic agents, for achieving special effects with small additions. The most important effects obtained by adding fumed silica are increasing the viscosity of the synthetic resin liquid system and imparting thixotropy. Among synthetic resin liquid systems, it is particularly effective for polyester resins and epoxy resins, and for molding glass fiber reinforced plastics.
A variety of things such as fishing boats and septic tanks are manufactured using the brush painting method, spray method, etc., but if a certain proportion of fumed silica is added to the resin in advance, the resin will no longer sag even on vertical surfaces. It becomes possible to mold to a thickness of 100 ms. Therefore, it can be said that the purpose of imparting thixotropy by adding Humid 7 Lika is to prevent the resin from sagging on the vertical plane.
合成樹脂の添加剤用シリカとしては、親水性のヒユーム
ドシリカが用いられて来ていたが、この親水性のシリカ
は経時的に沈降して、樹脂液と分離する傾向があり、特
に樹脂液の粘度が低いものが賛意される場合にはその傾
向が著しく作業上問題であった。その為各メーカーでは
在庫期間短縮及び低温保存(粘度がアンプして沈降速度
を多少下けることが出来る)等によシ対処しているが必
ずしも十分な成果が達せられていない。Hydrophilic fumed silica has been used as silica as an additive for synthetic resins, but this hydrophilic silica tends to settle over time and separate from the resin liquid, especially when the viscosity of the resin liquid When approval was given to something with a low value, this tendency was extremely problematic for work. For this reason, each manufacturer has taken measures such as shortening the inventory period and storing at low temperatures (which can increase the viscosity and lower the sedimentation rate to some extent), but sufficient results have not necessarily been achieved.
このシリカの沈降防止のために7リカの粒子表面を疎水
化処理する方法が採られており、事実粒子の沈降がない
疎水化グレードのもの、例えば日本アエロジル@4R−
タフλが市販されているが、これらのものは反面、本来
の添加目的である他愛性が消失する傾向にあった。In order to prevent this silica from settling, a method has been adopted in which the surface of the 7 lika particles is made hydrophobic, and in fact, hydrophobized grade products that do not cause particles to settle, such as Nippon Aerosil @4R-
Tough λ is commercially available, but on the other hand, these products tend to lose their neutrality, which is the original purpose of their addition.
本発明は、チクントロビー性を失うことなく、粒子の沈
降を防止するのに適した性質を有する微粉体無機酸化物
、特にシリカ微粉末を提供することにある。The object of the present invention is to provide a finely divided inorganic oxide, particularly a finely divided silica powder, which has properties suitable for preventing particle sedimentation without losing its chikunthrobic properties.
〔問題点を解決するための手段〕
平均粒子径が100.μ以下で、比表面棟が少なくとも
jOrrL′/fであり、水−メタノール混合液による
湿潤試験において、gllllt−生起しない該混合液
中のメタノールの臨界機度がt。[Means for solving the problem] The average particle diameter is 100. μ or less, the specific surface ridge is at least jOrrL'/f, and in a wetting test with a water-methanol mixture, the criticality of methanol in the mixture that does not cause gllllt- is t.
容量チ以上である疎水性の酸化物微粉体は、合成樹脂液
に添加した際、沈降分離せずしかも十分な他愛性を付与
することが出来る。When a hydrophobic oxide fine powder having a capacity of 1 or more is added to a synthetic resin liquid, it does not sediment and separate, and can impart sufficient hydrophilicity.
本発明で使用される疎水性の無機酸化物としては、シリ
カ、チタニア、ジルコニア、アルミナなどがあけられる
。Examples of the hydrophobic inorganic oxide used in the present invention include silica, titania, zirconia, and alumina.
これら疎水性の無機酸化物微粉体は、平均粒径が/ 0
0mμ以下、好ましくは/〜so、Bμである。平均粒
径があまり大きくては合成樹脂溶液の粘度上昇および他
愛性付与の目的に適合しなくなる。逆に平均粒径があま
りに小さいものは製造困難で工業的でない。These hydrophobic inorganic oxide fine powders have an average particle size of /0
0 mμ or less, preferably /~so, Bμ. If the average particle size is too large, it will not be suitable for the purpose of increasing the viscosity of the synthetic resin solution and imparting sterility. On the other hand, if the average particle size is too small, it is difficult to manufacture and is not suitable for industrial use.
また、本発明の疎水性の無機酸化物微粉体は比表面積が
少なくとも!Oyl’/f、好ましくは10 o−jo
om’/lである。Furthermore, the hydrophobic inorganic oxide fine powder of the present invention has a specific surface area of at least ! Oyl'/f, preferably 10 o-jo
om'/l.
比表面積がsom’71以下の無機酸化物微粉体は、有
機液体中での増粘効果および他愛性が充分でない。一方
、比表面積r 00 m’/fの超微粉体は、一般に製
造が困難である。Inorganic oxide fine powders having a specific surface area of som'71 or less do not have sufficient thickening effect and antiphilicity in organic liquids. On the other hand, ultrafine powder having a specific surface area r 00 m'/f is generally difficult to manufacture.
さらに、本発明の疎水性の無機酸化物微粉末は、水−メ
タノール混合液による湿潤試験において、湿潤を生起し
ない該混合液中のメタノールの臨界濃度(以下M値と称
する)が60容量%(M値to)以上である。Furthermore, in a wetting test with a water-methanol mixture, the hydrophobic inorganic oxide fine powder of the present invention has a critical concentration of methanol (hereinafter referred to as M value) in the mixture that does not cause wetting of 60% by volume ( M value to) or more.
水−メタノール混合液による湿潤試験は、疎水性を表示
するもので、具体的には、特公昭67−2A≠/号明細
書に下記の如く、記載されている。A wetness test using a water-methanol mixture indicates hydrophobicity, and is specifically described in the specification of Japanese Patent Publication No. 67-2A≠/ as shown below.
メタノールの濃度をj容fi%の間隔で変化させた水と
の混合溶液を調整し、これを容積10−の試験管にjm
l入れる。次いで供試粉体をo、i〜0.2 を入れ、
激しく振りまぜ静置後観察し、全粉体が湿潤しない限界
のメタノール濃度を知りこれをM値として表わす。例え
ば”M値コO“とは、メタノール−20谷量チの混合溶
液では湿潤しないが、2j容量チでは粉体の一部が湿潤
し始めることを示す。又“M値0 //は水のみでは湿
潤しないが、メタノール濃度j容量チで湿潤が起ること
を示す。従ってM値が高い捏練水性が高いことを示すと
ともに、本測定法では水に湿潤しないと言う意味での完
全疎水性の程度を知ることができ、処理が不均一であれ
ばM値は小さくあるいは示さなくなる。尚、本測定にお
いて湿潤の発生は、粉体が溶液中に懸濁されることによ
って観察されるが、殆んどの場合、粉体の湿潤がなけれ
ば溶液面付近に浮上し、一方、湿潤により粉体の沈降が
認められ、7ラノール)で覆われている為親水性であり
また水素結合に基因する増粘性及び他愛性を示す。Prepare a mixed solution of methanol and water in which the concentration was varied at an interval of j volume fi%, and add this to a test tube with a volume of 10-m.
I put it in. Next, add the sample powder o, i ~ 0.2,
Shake vigorously and observe after standing to find the limit methanol concentration that does not wet the entire powder, which is expressed as the M value. For example, "M value koO" indicates that a mixed solution of methanol and 20 volumes does not wet the powder, but when the powder has a volume of 2j, a part of the powder begins to wet. In addition, "M value 0//" indicates that water alone does not cause wetting, but wetting occurs at methanol concentration j volume q. Therefore, a high M value indicates high kneading water properties, and in this measurement method, water alone does not wet the water. The degree of complete hydrophobicity in the sense of no wetting can be determined, and if the treatment is non-uniform, the M value will be small or will not appear.In this measurement, wetting occurs when the powder is suspended in the solution. This is observed when the powder becomes cloudy, but in most cases, if there is no moisture, the powder will float near the surface of the solution.On the other hand, due to moisture, the powder will settle, and because it is covered with 7ranol, it will become hydrophilic. It also exhibits viscosity and heterogeneity due to hydrogen bonding.
しかるに表面処理九よシ疎水性にする、即ちM値を高く
していくと上記の増粘性や揺変性が失われてしまう。こ
の事は、疎水化処理によシ水酸基が減少する事から水素
結合の数が減少する為当然の事と考えられていた。However, when the surface treatment is made more hydrophobic, that is, when the M value is increased, the above-mentioned thickening properties and thixotropy are lost. This was thought to be natural because the number of hydrogen bonds decreases as the number of hydroxyl groups decreases through the hydrophobization treatment.
ところが、特定粒子のフユームドシリ力のM値を60以
上にすると高い疎水性を示すだけでなく一旦失なわれた
増粘性やチタントロピー性が再び発現する事を見出した
。この理由は明らかでないが、非常に高い疎水性にした
為本来の水素結合による増粘性、揺変性とは全く異なっ
た疎水結合的な力が働いているものと推測される。However, it has been found that when the M value of the fumed silica force of specific particles is set to 60 or more, not only do they exhibit high hydrophobicity, but also the once-lost thickening properties and titanium tropism are re-expressed. The reason for this is not clear, but it is presumed that because the material is made extremely hydrophobic, a hydrophobic bonding force that is completely different from the original viscosity increase due to hydrogen bonding and thixotropy is at work.
上記したような本発明の疎水性の無機酸化物微粉体は、
例えば、四塩化珪素、四弗化珪素、四塩化チタン、四塩
化ジルコン、三塩化アルミニウムのような金属ハロケン
化物を気相酸化または気相加水分解することによって得
られた平均粒子径が100mμ以下で、比表面積がjO
ml / 1以上の金属酸化物微粉体を、特定の方法で
疎水化処理することによって製造される。The hydrophobic inorganic oxide fine powder of the present invention as described above is
For example, the average particle size obtained by gas phase oxidation or gas phase hydrolysis of a metal halide such as silicon tetrachloride, silicon tetrafluoride, titanium tetrachloride, zirconium tetrachloride, or aluminum trichloride is 100 mμ or less. And the specific surface area is jO
It is produced by hydrophobicizing metal oxide fine powder of ml/1 or more using a specific method.
上記金属酸化物微粉体としては、具体的にはヒユームド
シリカ、ヒユームドチタニア、ヒユームドアルミナがあ
げられる。Specific examples of the metal oxide fine powder include fumed silica, fumed titania, and fumed alumina.
疎水化処理に使用される疎下化剤としては、例えば、以
下にあげるようなシラザン化合物があげられる。Examples of the repulsion agent used in the hydrophobization treatment include the following silazane compounds.
〔注) : Me :メチル基
Et;エチル基
Ph:フェニル基
疎水化剤の使用量は、処理する酸化物微粉体の比表面積
により異なり画一的に定められないが概略値は酸化物微
粉体を基準にして、2〜100M量チ程度である。2重
量−以下ではM値が60以上の疎水化の強はを得ること
が困難であり、他方、100重量%以上使用しても、そ
れに見合う効果は達せられない。[Note]: Me: Methyl group Et; Ethyl group Ph: Phenyl group The amount of the hydrophobizing agent to be used varies depending on the specific surface area of the oxide fine powder to be treated and cannot be uniformly determined, but the approximate value is for the oxide fine powder. Based on this, it is about 2 to 100M. If it is less than 2% by weight, it is difficult to obtain a strong hydrophobization with an M value of 60 or more, and on the other hand, even if it is used in an amount of 100% by weight or more, the commensurate effect cannot be achieved.
酸化物微粉体の疎水化処理方法としては、酸化物微粒子
表面の水散基とシラザン化合物が均一に反応する方法で
あれば、特に制限されないが、例えば、酸化物微粉体を
均一に疎水化処理するために、その粉体を流動状態に保
ち、疎水化剤のシラザン化合物を蒸発させ、その沸点以
上、3JO℃以下の温度で気相中で処理することが望ま
しい。従来、疎水化方法としてはシランカップリング剤
等を予めアルコール溶剤等で希釈後、その液を滴下又は
噴霧する方法が主にとられて来たが、この方法では粉体
の表面処理に於いて局所ムラが存在し、粒子等の分散の
面に問題を生じていた。又、このような方法ではM値6
Q以上のように疎水化の強さを著しく向上させることは
困難である。The method of hydrophobizing the oxide fine powder is not particularly limited as long as the aqueous groups on the surface of the oxide fine particles and the silazane compound react uniformly, but for example, the method of uniformly hydrophobizing the oxide fine powder can be used. In order to do this, it is desirable to keep the powder in a fluid state, evaporate the silazane compound as a hydrophobizing agent, and treat it in a gas phase at a temperature above its boiling point and below 3 JO°C. Conventionally, the main hydrophobization method has been to dilute a silane coupling agent or the like with an alcohol solvent, etc., and then drop or spray the solution. Local unevenness existed, causing problems in terms of dispersion of particles, etc. Also, with this method, the M value is 6.
It is difficult to significantly improve the strength of hydrophobization as above Q.
シラザン化合物で処理する場合、特に触媒を用いなくて
も、200℃lj分程度反応させれば疎水化の強さがM
値で608度には達成されるため必すしも触媒を用いる
必!I!はないが、より低い温度で速やかに反応を完結
させるために、公知の触媒、例えば脂肪族アミン類等を
使用しても良い。又、シラザン化合物の蒸気を導入する
に際してNts空気等のイナートガスで希釈して使用し
ても良い。この反応に要する時間は75分以上であるこ
とが望ましいが、≠時間以上にしてもそれ以上に粉体の
疎水性の向上はないので、通常/6分〜f時間で十分で
ある。When treating with a silazane compound, the strength of hydrophobization can be increased to M if the reaction is carried out at 200°C for about 1 minute without using a particular catalyst.
Since the value reaches 608 degrees, it is necessary to use a catalyst! I! However, in order to quickly complete the reaction at a lower temperature, known catalysts such as aliphatic amines may be used. Furthermore, when introducing the vapor of the silazane compound, it may be diluted with an inert gas such as Nts air. It is desirable that the time required for this reaction is 75 minutes or more, but since the hydrophobicity of the powder will not be further improved even if the time is ≠ or more, a time of 6 minutes to f hours is usually sufficient.
なお、処理反応は酸化物微粉体を流動状態に保つため流
動層、攪拌槽又はパイプラインミキサー等が利用出来、
シラザン化合物を含んだガスを導通させることにより行
なうが処理の不均一性を回避するため囲気の接触効率を
よくすることが肝要である。又1反応の出ガス全還流に
より液状態で系内に戻すことは、前述の液滴で滴下する
場合に相当し、局所的に不均一な部分が生じるため出来
るだけ気相のままワンバス又はリサイクル使用する方法
が良い。In addition, in order to keep the oxide fine powder in a fluidized state, a fluidized bed, stirring tank, pipeline mixer, etc. can be used for the treatment reaction.
Although this is carried out by passing a gas containing a silazane compound, it is important to improve the contact efficiency of the surrounding air in order to avoid non-uniformity of the treatment. Also, returning the gas from one reaction to the system in a liquid state through total reflux corresponds to the above-mentioned case of dropping with droplets, and since locally non-uniform areas occur, it is necessary to carry out one-bath or recycling in the gas phase as much as possible. Good method to use.
この様にして処理きれた酸化物粉体は、反応により生成
したアンモニアを吸着しているため、塩基性な示し又ア
ンモニア臭も強いのでそれを水化の程度には変化なく無
臭でかつ中性のものが得られる。The oxide powder treated in this way adsorbs ammonia produced by the reaction, so it shows basicity and has a strong ammonia odor, so it is odorless and neutral without changing the degree of hydration. You can get the following.
本発明の疎水性酸化物微粉体は、熱硬化性液状樹脂に安
定に分散し、増粘と他愛性付与に好適であり、ハンドレ
イアップ、スズレイアッグ、フィラメントワインディン
グあるいはゲルコート用として好適な不飽和ポリエステ
ル樹脂またはエポキシ樹脂用の他愛付与剤として最適で
ある。The hydrophobic oxide fine powder of the present invention is stably dispersed in a thermosetting liquid resin, and is suitable for thickening and imparting properties, and is an unsaturated polyester suitable for hand lay-up, tin lay-up, filament winding, or gel coating. Ideal as a tactile agent for resins or epoxy resins.
酸化物微粉体の使用量は通常液状樹脂100重量部に対
し0.3〜1077i量部、好ましくは01−!を置部
である。The amount of oxide fine powder used is usually 0.3 to 1077 parts by weight, preferably 0.1 to 1077 parts by weight, per 100 parts by weight of liquid resin. This is Okibe.
本発明の疎水性の酸化物微粉体は、この他塗料、インキ
、接着剤、合成ゴム等の改餉剤としても有用であシ、疎
水性が強い点を利用した各種撥水性コーティング剤、粉
体の流動性改善や固結防止の目的にも利用することがで
きる。The hydrophobic oxide fine powder of the present invention is also useful as a modifying agent for paints, inks, adhesives, synthetic rubber, etc., and it can also be used as a variety of water-repellent coating agents and powders that take advantage of its strong hydrophobicity. It can also be used for the purpose of improving body fluidity and preventing caking.
次に本発明を実施例により更に詳細に説明するが1本発
明は、その要旨を超えない限シ、以下の実施例に限定さ
れるものではない。Next, the present invention will be explained in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof.
実施例/
ガス吹込管及びガス吐出管(いずれも200℃保温)、
攪拌機並びに温度計を備えた内容積/lのガラス製セパ
ラブルフラスコに平均粒子径/4mμ、比表面積200
m’ / fを有するヒユームドシリカ(日本アエロ
ジル社製#コOO)、252を入れJ(777’Cに加
熱攪拌下、ヘキサメチルジシラザンのガスf 1. f
/hr、の速度で導入した。そのまま、2 hr0反応
させた後、200℃に降温させて窒素ガスで雰囲気パー
ジを1.r分行ない、粉体を取シ出した。Example/ Gas blowing pipe and gas discharge pipe (both kept at 200°C),
In a glass separable flask with an internal volume of 1 liter equipped with a stirrer and a thermometer, the average particle diameter was 4 mμ and the specific surface area was 200.
Humid silica (manufactured by Nippon Aerosil Co., Ltd. #COOO) having m'/f, 252 was added to J (777'C with stirring, and hexamethyldisilazane gas f1.f).
/hr. After reacting for 2 hours, the temperature was lowered to 200°C and the atmosphere was purged with nitrogen gas for 1. The process was continued for r minutes and the powder was taken out.
取得された粉体は水−メタノール混合液の湿潤試験によ
りM値6jの極めて高い疎水性を示した。尚、反応前の
ヒユームドシリカのM値はマイナス(−)で水に濡れる
ものであった。The obtained powder showed extremely high hydrophobicity with an M value of 6j in a wet test with a water-methanol mixture. The M value of the fumed silica before the reaction was negative (-), meaning that it was wet with water.
実施例コ
実施例1に於て、反応温度f 200℃に変更し、又反
応時間を30分に短縮した以外は同様にして操作を行な
った。Example The same procedure as in Example 1 was carried out except that the reaction temperature f was changed to 200°C and the reaction time was shortened to 30 minutes.
その結果取得された粉体はM値60の極めて高い疎水性
を示した。The powder obtained as a result showed extremely high hydrophobicity with an M value of 60.
実施例3
実施例/及びλで得られた疎水性シリカを樹脂に添加し
、その他愛性効果を調べた。Example 3 The hydrophobic silica obtained in Examples/and λ was added to a resin, and other attractive effects were investigated.
不飽和ポリエステルのスチレン溶液(大日本インキ化学
工業■製、商標ポリライ)FG−IO≠)(粘If2.
0ボイズ)100(重量部)に対し、実施例/及びλで
得られた疎水性シリび他愛性を測定し、その結果を第1
表に示した。Styrene solution of unsaturated polyester (manufactured by Dainippon Ink & Chemicals ■, trademark Polylye) FG-IO≠) (viscosity If2.
0 voids) 100 (parts by weight), the hydrophobicity and hydrophilicity obtained in Examples/and λ were measured, and the results were
Shown in the table.
又、分散固体粒子の沈降性を調べるため、樹脂スラリー
fatのガラス製メスシリンダー(高さ約s o Om
) VC分取し、λ週間後の粒子の沈降伏態金調べ、
その結果も第1表に示した。In addition, in order to examine the sedimentation properties of the dispersed solid particles, a glass measuring cylinder (height: approximately s o Om) containing the resin slurry
) VC fractionation and investigation of sedimentation state of particles after λ weeks,
The results are also shown in Table 1.
尚、粘度は、東京計器製のB型回転粘度計を用いて測定
し、他愛性はチクントロビー指数(TI指数)で示した
。チクソトロピー指数とは回転粘度計にてローターの回
転速度を変えて測定される粘雌比で下記のものである。The viscosity was measured using a B-type rotational viscometer manufactured by Tokyo Keiki Co., Ltd., and the heterogeneity was expressed as the Chikuntrobei index (TI index). The thixotropic index is the viscosity ratio measured by changing the rotational speed of the rotor using a rotational viscometer, and is as follows.
また、比較のために、本願の疎水性クリ力に変えて、無
処理のヒユームドシリカ(日本アニルジル@製、商標ア
エロジル#コOO)及び市販の疎水性ヒユームドシリカ
を用い′fc場合の結果を鴫/表に示した。For comparison, in place of the hydrophobic curing force of the present application, untreated hummed silica (manufactured by Nippon Anilsil@, trademark Aerosil #coOO) and commercially available hydrophobic fumed silica were used for 'fc' results. It was shown to.
Claims (2)
くとも50m^2/gであり、水−メタノール混合液に
よる湿潤試験において、湿潤を生起しない該混合液中の
メタノールの臨界濃度が60容量%以上であることを特
徴とする疎水性の酸化物微粉体。(1) The average particle diameter is 100 mμ or less, the specific surface area is at least 50 m^2/g, and the critical concentration of methanol in the mixture that does not cause wetting in a wetting test with a water-methanol mixture is 60% by volume. A hydrophobic oxide fine powder characterized by the above.
くとも50m^2/gであり、水−メタノール混合液に
よる湿潤試験において、湿潤を生起しない該混合液中の
メタノールの臨界濃度が60容量%以上である疎水性の
酸化物微粉体からなる熱硬化性液状樹脂用揺変付与剤。(2) The average particle size is 100 mμ or less, the specific surface area is at least 50 m^2/g, and the critical concentration of methanol in the mixture that does not cause wetting in a wetting test with a water-methanol mixture is 60% by volume. A thixotropy imparting agent for a thermosetting liquid resin comprising the above hydrophobic oxide fine powder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59157041A JPS6136338A (en) | 1984-07-27 | 1984-07-27 | Fine hydrophobic oxide powder and thixotropy imparting agent consisting of said oxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59157041A JPS6136338A (en) | 1984-07-27 | 1984-07-27 | Fine hydrophobic oxide powder and thixotropy imparting agent consisting of said oxide |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6136338A true JPS6136338A (en) | 1986-02-21 |
Family
ID=15640897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59157041A Pending JPS6136338A (en) | 1984-07-27 | 1984-07-27 | Fine hydrophobic oxide powder and thixotropy imparting agent consisting of said oxide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6136338A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0863444A1 (en) * | 1997-03-06 | 1998-09-09 | Cabot Corporation | Charge-modified metal oxides and electrostatographic systems incorporating same |
JP2004525222A (en) * | 2001-03-15 | 2004-08-19 | キャボット コーポレイション | Corrosion resistant coating composition |
JP2005002177A (en) * | 2003-06-10 | 2005-01-06 | Toyota Motor Corp | Coating composition |
JP2011516373A (en) * | 2008-03-04 | 2011-05-26 | エボニック デグサ ゲーエムベーハー | Silica and epoxy resin |
-
1984
- 1984-07-27 JP JP59157041A patent/JPS6136338A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0863444A1 (en) * | 1997-03-06 | 1998-09-09 | Cabot Corporation | Charge-modified metal oxides and electrostatographic systems incorporating same |
US5900315A (en) * | 1997-03-06 | 1999-05-04 | Cabot Corporation | Charge-modified metal oxide particles |
US5989768A (en) * | 1997-03-06 | 1999-11-23 | Cabot Corporation | Charge-modified metal oxides with cyclic silazane and electrostatographic systems incorporating same |
JP2004525222A (en) * | 2001-03-15 | 2004-08-19 | キャボット コーポレイション | Corrosion resistant coating composition |
JP2005002177A (en) * | 2003-06-10 | 2005-01-06 | Toyota Motor Corp | Coating composition |
JP4511806B2 (en) * | 2003-06-10 | 2010-07-28 | トヨタ自動車株式会社 | Paint composition |
JP2011516373A (en) * | 2008-03-04 | 2011-05-26 | エボニック デグサ ゲーエムベーハー | Silica and epoxy resin |
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