JPH1059708A - Modified colloidal silica - Google Patents

Modified colloidal silica

Info

Publication number
JPH1059708A
JPH1059708A JP21640496A JP21640496A JPH1059708A JP H1059708 A JPH1059708 A JP H1059708A JP 21640496 A JP21640496 A JP 21640496A JP 21640496 A JP21640496 A JP 21640496A JP H1059708 A JPH1059708 A JP H1059708A
Authority
JP
Japan
Prior art keywords
group
colloidal silica
carbon atoms
hydrocarbon group
weight
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.)
Pending
Application number
JP21640496A
Other languages
Japanese (ja)
Inventor
Tadao Takahata
忠雄 高畑
Takahiro Otsuka
孝洋 大塚
Yasuyuki Shigeta
康之 茂田
Kiyoshi Takesute
清 武捨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adeka Corp
Original Assignee
Asahi Denka Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Denka Kogyo KK filed Critical Asahi Denka Kogyo KK
Priority to JP21640496A priority Critical patent/JPH1059708A/en
Publication of JPH1059708A publication Critical patent/JPH1059708A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To obtain a modified colloidal silica stable even in the coexistence of a cationic material in wide pH range by modifying a water base colloidal silica with a specific compound. SOLUTION: The water base colloidal silica is modified with the compound expressed by the formula. In the formula, R represents a 1-6C alkyl group, R' represents a 1-4C hydrocarbon group, a 1-4C hydrocarbon group substituted with an amino group or a group having the 1-4C hydrocarbon group optionally substituted with the amino group and bonded with single or plural nitrogen atoms, R" represents a 1-3C alkyl group, (k) is 0-2, (m) is 1 or 2, (n) is 1-3 and k+m+n=4. The water base colloidal silica contains preferably 10-60wt.% silica solid portion though not restricted. As the degree of the modification, the ratio by weight of nitrogen atom occupied in the dry modified colloidal silica is preferably 0.1-10%.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、変性コロイダルシ
リカに関し、詳しくはカチオン性物質の共存環境におい
ても安定な変性コロイダルシリカに関する。
The present invention relates to a modified colloidal silica, and more particularly to a modified colloidal silica which is stable even in an environment where a cationic substance coexists.

【0002】[0002]

【従来の技術】従来、製紙、繊維、樹脂、金属、電機、
印刷工業等の各種分野においてコロイダルシリカは物性
改良剤として用いられているが、近年、処理工程の簡略
化、省力化に伴いカチオン性物質(界面活性剤、染料、
ポリマー等)との共存環境において安定に使用可能なコ
ロイダルシリカが望まれ、特開平2−172812号公報で
は、塩基性塩化アルミニウムを使用したカチオン化コロ
イダルシリカの製造が試みられている。
2. Description of the Related Art Conventionally, papermaking, fiber, resin, metal, electric machine,
Colloidal silica is used as a physical property improver in various fields such as the printing industry.In recent years, cationic substances (surfactants, dyes,
A colloidal silica that can be used stably in an environment coexisting with a polymer or the like is desired, and JP-A-2-172812 attempts to produce cationized colloidal silica using basic aluminum chloride.

【0003】[0003]

【発明が解決しようとする課題】しかし、アルミニウム
等の多価金属イオンを付与したカチオン化コロイダルシ
リカは一定のpH領域ではカチオン性物質との配合安定
性を示すものの、この安定なpH領域が狭く、応用範囲
に制約のあるものであった。
However, cationized colloidal silica provided with a polyvalent metal ion such as aluminum shows stability of compounding with a cationic substance in a certain pH range, but this stable pH range is narrow. , The range of application was limited.

【0004】従って、本発明の目的は、広範なpH領域
においてカチオン性物質と共存しても安定な変性コロイ
ダルシリカを提供することにある。
Accordingly, it is an object of the present invention to provide a modified colloidal silica which is stable even in the presence of a cationic substance in a wide pH range.

【0005】[0005]

【課題を解決するための手段】即ち、本発明の変性コロ
イダルシリカは、水性コロイダルシリカを、下記一般式
(1)で表される化合物で変性したことを特徴とする:
That is, the modified colloidal silica of the present invention is obtained by converting aqueous colloidal silica into the following general formula:
It is characterized by being modified with the compound represented by (1):

【化2】 (式中、Rは、炭素原子数1〜6のアルキル基であり、
R'は、炭素原子数1〜4の炭化水素基、アミノ基で置
換されている炭素原子数1〜4の炭化水素基、若しくは
アミノ基で置換されていてもよい炭素原子数1〜4の炭
化水素基が単数又は複数の窒素原子で連結された基であ
り、R"は、炭素原子数1〜3のアルキル基であり、k
は、0〜2の数であり、mは、1または2であり、n
は、1〜3の数であって、且つk+m+n=4となる数
である)
Embedded image (Wherein, R is an alkyl group having 1 to 6 carbon atoms,
R ′ is a hydrocarbon group having 1 to 4 carbon atoms, a hydrocarbon group having 1 to 4 carbon atoms substituted with an amino group, or a hydrocarbon group having 1 to 4 carbon atoms which may be substituted with an amino group. A hydrocarbon group linked by one or more nitrogen atoms, R "is an alkyl group having 1 to 3 carbon atoms, and k
Is a number from 0 to 2; m is 1 or 2;
Is a number from 1 to 3 and k + m + n = 4)

【0006】[0006]

【発明の実施の形態】本発明に使用する水性コロイダル
シリカは特に限定されるものではなく、例えば、シリカ
固形分量5〜70重量%、好ましくは10〜60重量%
の水性コロイダルシリカが使用でき、一般に市販されて
いる水性コロイダルシリカを使用することができ。例え
ばアデライトAT−30S[旭電化工業(株)製、平均粒
子径8.5±1.5nm、シリカ固形分30重量%]、ア
デライトAT−30[旭電化工業(株)製、平均粒子径1
2.5±2.5nm、シリカ固形分30重量%]、アデラ
イトAT−40[旭電化工業(株)製、平均粒子径17.
5±2.5nm、シリカ固形分40重量%]、アデライ
トAT−50[旭電化工業(株)製、平均粒子径25±5
nm、シリカ固形分50重量%]、アデライトAT−3
0A[旭電化工業(株)製、平均粒子径12.5±2.5n
m、シリカ固形分30重量%]、アデライトAT−20
Q[旭電化工業(株)製、平均粒子径12.5±2.5n
m、シリカ固形分20重量%]等を使用することができ
る。
DETAILED DESCRIPTION OF THE INVENTION The aqueous colloidal silica used in the present invention is not particularly limited. For example, the solid content of silica is 5 to 70% by weight, preferably 10 to 60% by weight.
Aqueous colloidal silica can be used, and generally available aqueous colloidal silica can be used. For example, Adelite AT-30S [manufactured by Asahi Denka Kogyo Co., Ltd., average particle size 8.5 ± 1.5 nm, silica solid content 30% by weight], Adelaite AT-30 [Asahi Denka Kogyo Co., Ltd., mean particle size 1]
2.5 ± 2.5 nm, silica solid content 30% by weight], Adelite AT-40 [manufactured by Asahi Denka Kogyo KK, average particle size 17.
5 ± 2.5 nm, silica solid content 40% by weight], Adelite AT-50 [manufactured by Asahi Denka Kogyo KK, average particle size 25 ± 5]
nm, silica solid content 50% by weight], Adelite AT-3
0A [Asahi Denka Kogyo Co., Ltd., average particle size 12.5 ± 2.5 n
m, silica solid content 30% by weight], Adelite AT-20
Q [Asahi Denka Kogyo Co., Ltd., average particle size 12.5 ± 2.5 n
m, silica solids content 20% by weight].

【0007】なお、水性コロイダルシリカは、好ましく
は平均粒子径5〜70nm、更に好ましくは7〜50n
mのものが良い。水性コロイダルシリカの平均粒子径が
上記範囲外であると、コロイダルシリカ変性時の安定性
の点で好ましくない。
The aqueous colloidal silica preferably has an average particle size of 5 to 70 nm, more preferably 7 to 50 n.
m is good. If the average particle size of the aqueous colloidal silica is out of the above range, it is not preferable in terms of stability at the time of modification of the colloidal silica.

【0008】本発明に使用する水性コロイダルシリカの
変性剤は下記一般式(1)で表される化合物である:
The modifier for aqueous colloidal silica used in the present invention is a compound represented by the following general formula (1):

【化3】 (式中、Rは、炭素原子数1〜6のアルキル基であり、
R'は、炭素原子数1〜4の炭化水素基、アミノ基で置
換されている炭素原子数1〜4の炭化水素基、若しくは
アミノ基で置換されていてもよい炭素原子数1〜4の炭
化水素基が単数又は複数の窒素原子で連結された基であ
り、R"は、炭素原子数1〜3のアルキル基であり、k
は、0〜2の数であり、mは、1または2であり、n
は、1〜3の数であって、且つk+m+n=4となる数
である)
Embedded image (Wherein, R is an alkyl group having 1 to 6 carbon atoms,
R ′ is a hydrocarbon group having 1 to 4 carbon atoms, a hydrocarbon group having 1 to 4 carbon atoms substituted with an amino group, or a hydrocarbon group having 1 to 4 carbon atoms which may be substituted with an amino group. A hydrocarbon group linked by one or more nitrogen atoms, R "is an alkyl group having 1 to 3 carbon atoms, and k
Is a number from 0 to 2; m is 1 or 2;
Is a number from 1 to 3 and k + m + n = 4)

【0009】ここで、Rの具体例としては、メチル基、
エチル基、プロピル基、イソプロピル基、ブチル基、イ
ソブチル基、ターシャリーブチル基、ペンチル基、イソ
ペンチル基、ネオペンチル基、ヘキシル基、イソヘキシ
ル基等が挙げられ、好ましくは炭素原子数1〜3のアル
キル基が良く、メチル基、エチル基が最も好ましい。
Here, specific examples of R include a methyl group,
Ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, tertiary butyl group, pentyl group, isopentyl group, neopentyl group, hexyl group, isohexyl group and the like, preferably an alkyl group having 1 to 3 carbon atoms. And a methyl group and an ethyl group are most preferable.

【0010】次に、R"の具体例としては、メチル基、
エチル基、プロピル基、イソプロピル基等が挙げられ、
好ましくはメチル基、エチル基が良い。
Next, specific examples of R ″ include a methyl group,
Ethyl group, propyl group, isopropyl group and the like,
Preferred are a methyl group and an ethyl group.

【0011】また、R'のうち、炭素原子数1〜4の炭
化水素の具体例としては、メチレン基、エチレン基、プ
ロピレン基、イソプロピレン基、ブチレン基、イソブチ
レン基等が挙げられ、好ましくは炭素原子数2〜4のア
ルキレン基が良く、エチレン基、プロピレン基、ブチレ
ン基が良い。
Specific examples of the hydrocarbon having 1 to 4 carbon atoms in R 'include methylene, ethylene, propylene, isopropylene, butylene, and isobutylene. An alkylene group having 2 to 4 carbon atoms is preferable, and an ethylene group, a propylene group, and a butylene group are preferable.

【0012】更に、R'のうち、アミノ基で置換されて
いる炭素原子数1〜4の炭化水素基の具体例としてはア
ミノメチレン基、アミノエチレン基、アミノプロピレン
基、アミノイソプロピレン基、アミノブチレン基、アミ
ノイソブチレン基等が挙げられ、好ましくはアミノエチ
レン基、アミノプロピレン基が良い。
Further, among R ', specific examples of the hydrocarbon group having 1 to 4 carbon atoms substituted with an amino group include aminomethylene group, aminoethylene group, aminopropylene group, aminoisopropylene group, aminoisopropylene group and the like. Examples thereof include a butylene group and an aminoisobutylene group, and an aminoethylene group and an aminopropylene group are preferable.

【0013】また、R'のうち、アミノ基で置換されて
いてもよい炭素原子数1〜4の炭化水素基が単数または
複数の窒素原子で連結された基において、基中の炭素原
子数1〜4の炭化水素基は上記と同じである。また、こ
れらのアミノ基で置換されていてもよい炭化水素基を連
結する窒素原子は、好ましくは1〜4個が良く、このよ
うな基としては例えばアミノ基で置換されていてもよい
炭素原子数1〜4の炭化水素基をR1とし、R2を水素若
しくはアミノ基で置換されていてもよい炭素原子数1〜
4の炭化水素基とすると、以下の一般式(2)で示される
構造を有する基として例示することができる:
In R ′, a group in which a hydrocarbon group having 1 to 4 carbon atoms, which may be substituted with an amino group, is linked by one or more nitrogen atoms. The hydrocarbon groups (1) to (4) are the same as described above. The number of nitrogen atoms connecting the hydrocarbon groups which may be substituted with these amino groups is preferably 1 to 4, and such groups include, for example, carbon atoms which may be substituted with amino groups. number from 1 to 4 hydrocarbon group and R 1, R 2 and which do good number of carbon atoms be 1-substituted with hydrogen or amino group
The hydrocarbon group of 4 can be exemplified as a group having a structure represented by the following general formula (2):

【化4】 (式中、pは1〜4の数を表す)Embedded image (Wherein, p represents a number of 1 to 4)

【0014】一般式(2)で示される基は、例えば−R'
−NH2として表せば、(アミノエチル)アミノプロピル
基などを挙げることができる。
The group represented by the general formula (2) is, for example, -R '
Expressed as -NH 2, and the like (aminoethyl) aminopropyl groups.

【0015】上記R'基のなかでも好ましいものは、炭
素原子数1〜4の炭化水素基、アミノ基で置換されてい
る炭素原子数1〜4の炭化水素基、及び上記一般式(2)
において、R2が水素である基が良く、より好ましくは
炭素原子数1〜4の炭化水素基、及び上記一般式(2)に
おいて、R2が水素である基である。
Among the above R 'groups, preferred are a hydrocarbon group having 1 to 4 carbon atoms, a hydrocarbon group having 1 to 4 carbon atoms substituted with an amino group, and the above-mentioned general formula (2)
In, good group R 2 is hydrogen, more preferably a hydrocarbon group having 1 to 4 carbon atoms, and the general formula (2), a group R 2 is hydrogen.

【0016】上記一般式(1)で表される化合物の具体例
としては、例えば、アミノプロピルトリメトキシシラ
ン、(アミノエチル)アミノプロピルトリメトキシシラ
ン、アミノプロピルトリエトキシシラン、アミノプロピ
ルジメチルエトキシシラン、アミノプロピルメチルジエ
トキシシラン、アミノブチルトリエトキシシラン等を例
示することができる。
Specific examples of the compound represented by the general formula (1) include, for example, aminopropyltrimethoxysilane, (aminoethyl) aminopropyltrimethoxysilane, aminopropyltriethoxysilane, aminopropyldimethylethoxysilane, Examples include aminopropylmethyldiethoxysilane, aminobutyltriethoxysilane, and the like.

【0017】本発明の変性コロイダルシリカは、上記水
性コロイダルシリカを、上記変性剤にて変性することに
より得ることができる。
The modified colloidal silica of the present invention can be obtained by modifying the above aqueous colloidal silica with the above modifier.

【0018】好ましい変性の程度は、変性コロイダルシ
リカ乾燥重量中に占める窒素原子の重量割合(以下、変
性率と言う)として0.1〜10%、より好ましくは0.
5〜6%が良い。変性率が低すぎると変性の効果が少な
く、本発明の効果を得ることが難しくなる。変性効果の
点のみから言うと、変性率の上限はないが上記を超える
と作業性その他工業化適正に欠けることがある。
The degree of modification is preferably 0.1 to 10%, more preferably 0.1 to 10% by weight of nitrogen atoms in the dry weight of the modified colloidal silica (hereinafter referred to as modification ratio).
5-6% is good. If the modification rate is too low, the effect of modification is small, and it is difficult to obtain the effects of the present invention. From the viewpoint of the modification effect alone, there is no upper limit of the modification ratio, but if it exceeds the above, workability and other industrial applicability may be lacking.

【0019】変性剤の使用量と変性処理の条件は特に限
定されず、所望とする変性率とするべく適宜選択するこ
とができるが、使用量としては概ね水性コロイダルシリ
カに対して、上記一般式(1)で表される化合物からなる
変性剤を、シリカ固形分量基準で1〜80重量%、好ま
しくは3〜60重量%使用すれば良い。変性剤の量が少
なすぎると好ましい変性率を得ることが難しくなる。変
性効果の点のみから言うと、変性剤使用量の上限はない
が、上記量を超えると作業性その他工業化適正に欠ける
ことがある。
The amount of the modifying agent and the conditions of the modifying treatment are not particularly limited, and can be appropriately selected so as to obtain a desired modification rate. The modifier comprising the compound represented by (1) may be used in an amount of 1 to 80% by weight, preferably 3 to 60% by weight, based on the solid content of silica. If the amount of the modifier is too small, it becomes difficult to obtain a preferable modification ratio. In terms of the modifying effect alone, there is no upper limit to the amount of the modifying agent used, but if it exceeds the above amount, workability and other industrial applicability may be lacking.

【0020】変性処理条件としては概ね水性溶媒温度域
で数分〜数日間程度の範囲で適宜選択して処理すれば好
ましい変性率を得ることが可能であるが、作業性その他
工業化適正の観点から好ましくは室温〜90℃で数分〜
数時間、より好ましくは40〜90℃で10分〜10時
間であると副生成物の留去が容易になるので工業化には
最適である。
A preferable modification rate can be obtained by appropriately selecting a modification treatment condition in a range of about several minutes to several days in an aqueous solvent temperature range, but from the viewpoint of workability and industrial applicability. Preferably at room temperature to 90 ° C for several minutes
When the heating time is several hours, more preferably 10 minutes to 10 hours at 40 to 90 ° C., distillation of by-products becomes easy, so that it is most suitable for industrialization.

【0021】ここで、水性コロイダルシリカの変性処理
に伴い、処理温度が高い程、又処理時間が長い程、変性
コロイダルシリカの粒子径は大きくなる傾向にある。
Here, with the modification treatment of the aqueous colloidal silica, the particle diameter of the modified colloidal silica tends to increase as the treatment temperature is increased or the treatment time is extended.

【0022】本発明の変性コロイダルシリカは、カチオ
ン性物質の共存環境における安定性の観点から、好まし
くは7〜85nmの粒子径であることが好ましく、従っ
て、上記変性処理は好ましくは上記条件内で変性コロイ
ダルシリカの平均粒子径が7〜85nmの範囲内となる
ようにするのが好ましい。
The modified colloidal silica of the present invention preferably has a particle diameter of 7 to 85 nm from the viewpoint of stability in an environment where a cationic substance coexists. Therefore, the modification treatment is preferably performed under the above conditions. It is preferable that the modified colloidal silica has an average particle diameter in the range of 7 to 85 nm.

【0023】[0023]

【実施例】以下に実施例を挙げて本発明を更に説明する
が、本発明はこれらに限定されるものではないことを理
解されたい。また、以下の平均粒子径はいずれもBET
法によった。 実施例1 平均粒子径12nm、シリカ固形分20重量%の水性コ
ロイダルシリカ(アデライトAT−20)65重量部を還
流器付きフラスコに準備し、アミノプロピルトリメトキ
シシラン5重量部(シリカ固形分に対して38重量%)を
水30重量部で希釈した液を室温にて撹拌しつつフラス
コに加えた後、加温して65℃で3時間撹拌することに
より反応させた。得られた生成物は、僅かに濁りを呈し
たが、安定なpH10.5のコロイドであった。また、
平均粒子径は18nm、変性率は2.2%であった。そ
の後、硫酸でpHを7.0及び4.0に調整したが、いず
れも安定なコロイドであった。
The present invention will be further described with reference to the following examples, but it should be understood that the present invention is not limited to these examples. In addition, all of the following average particle sizes are BET
According to the law. Example 1 65 parts by weight of an aqueous colloidal silica (Adelite AT-20) having an average particle diameter of 12 nm and a silica solid content of 20% by weight was prepared in a flask equipped with a reflux condenser, and 5 parts by weight of aminopropyltrimethoxysilane (based on silica solids) Was added to the flask while stirring at room temperature, followed by heating and stirring at 65 ° C. for 3 hours. The resulting product was a slightly cloudy but stable colloid of pH 10.5. Also,
The average particle size was 18 nm, and the modification rate was 2.2%. Thereafter, the pH was adjusted to 7.0 and 4.0 with sulfuric acid, but both were stable colloids.

【0024】実施例2 平均粒子径24nm、シリカ固形分30重量%の水性コ
ロイダルシリカ(アデライトAT−30B)43重量部を
還流器付きフラスコに準備し、アミノブチルトリエトキ
シシラン4重量部(シリカ固形分に対して31重量%)を
水53重量部で希釈した液を室温にて撹拌しつつフラス
コに加えた後、加温して79℃で3時間撹拌することに
より反応させた。得られた生成物は、僅かに濁りを呈し
たが、安定なpH10.3のコロイドであった。また、
平均粒子径は35nm、変性率は1.5%であった。そ
の後、硫酸でpHを7.0及び4.0に調整したが、いず
れも安定なコロイドであった。
Example 2 43 parts by weight of aqueous colloidal silica (Adelite AT-30B) having an average particle diameter of 24 nm and a silica solid content of 30% by weight were prepared in a flask equipped with a reflux condenser, and 4 parts by weight of aminobutyltriethoxysilane (silica solids) were prepared. (31% by weight per minute) diluted with 53 parts by weight of water was added to the flask while stirring at room temperature, followed by heating and stirring at 79 ° C. for 3 hours to cause a reaction. The resulting product was a slightly cloudy but stable colloid of pH 10.3. Also,
The average particle size was 35 nm, and the modification rate was 1.5%. Thereafter, the pH was adjusted to 7.0 and 4.0 with sulfuric acid, but both were stable colloids.

【0025】実施例3 平均粒子径12nm、シリカ固形分20重量%の水性コ
ロイダルシリカ(アデライトAT−20Q)65重量部を
還流器付きフラスコに準備し、(アミノエチル)アミノプ
ロピルトリメトキシシラン7重量部(シリカ固形分に対
して20重量%)を、塩酸によりpHを3.5に調整した
水28重量部で希釈した液を室温にて撹拌しつつフラス
コに加えた後、加温して65℃で2時間撹拌することに
より反応させた。得られた生成物は、僅かに濁りを呈し
たが、安定なpH4.1のコロイドであった。また、平
均粒子径は20nm、変性率は4.4%であった。その
後、水酸化ナトリウムでpHを7.0及び10.0に調整
したが、いずれも安定なコロイドであった。
Example 3 65 parts by weight of an aqueous colloidal silica (Adelite AT-20Q) having an average particle diameter of 12 nm and a silica solid content of 20% by weight was prepared in a flask equipped with a reflux condenser, and (aminoethyl) aminopropyltrimethoxysilane (7 parts by weight) was prepared. A solution obtained by diluting a part (20% by weight based on the solid content of silica) with 28 parts by weight of water adjusted to pH 3.5 with hydrochloric acid was added to the flask while stirring at room temperature, and then heated to 65%. The reaction was performed by stirring at 2 ° C. for 2 hours. The resulting product was a slightly cloudy but stable colloid of pH 4.1. The average particle size was 20 nm, and the modification rate was 4.4%. Thereafter, the pH was adjusted to 7.0 and 10.0 with sodium hydroxide, and both were stable colloids.

【0026】[0026]

【発明の効果】本発明によれば、広範なpH領域におい
てカチオン性物質と共存しても安定な変性コロイダルシ
リカを提供することができる。
According to the present invention, it is possible to provide a modified colloidal silica which is stable even in the presence of a cationic substance in a wide pH range.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 武捨 清 東京都荒川区東尾久7丁目2番35号 旭電 化工業株式会社内 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kiyoshi Takezuchi Asahi Denka Kogyo Co., Ltd. 7-35 Higashiogu, Arakawa-ku, Tokyo

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 水性コロイダルシリカを、下記一般式
(1)で表される化合物で変性したことを特徴とする変性
コロイダルシリカ: 【化1】 (式中、Rは、炭素原子数1〜6のアルキル基であり、
R'は、炭素原子数1〜4の炭化水素基、アミノ基で置
換されている炭素原子数1〜4の炭化水素基、若しくは
アミノ基で置換されていてもよい炭素原子数1〜4の炭
化水素基が単数又は複数の窒素原子で連結された基であ
り、R"は、炭素原子数1〜3のアルキル基であり、k
は、0〜2の数であり、mは、1または2であり、n
は、1〜3の数であって、且つk+m+n=4となる数
である)
An aqueous colloidal silica is represented by the following general formula:
Modified colloidal silica modified with the compound represented by (1): (Wherein, R is an alkyl group having 1 to 6 carbon atoms,
R ′ is a hydrocarbon group having 1 to 4 carbon atoms, a hydrocarbon group having 1 to 4 carbon atoms substituted with an amino group, or a hydrocarbon group having 1 to 4 carbon atoms which may be substituted with an amino group. A hydrocarbon group linked by one or more nitrogen atoms, R "is an alkyl group having 1 to 3 carbon atoms, and k
Is a number from 0 to 2; m is 1 or 2;
Is a number from 1 to 3 and k + m + n = 4)
JP21640496A 1996-08-16 1996-08-16 Modified colloidal silica Pending JPH1059708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21640496A JPH1059708A (en) 1996-08-16 1996-08-16 Modified colloidal silica

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21640496A JPH1059708A (en) 1996-08-16 1996-08-16 Modified colloidal silica

Publications (1)

Publication Number Publication Date
JPH1059708A true JPH1059708A (en) 1998-03-03

Family

ID=16688040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21640496A Pending JPH1059708A (en) 1996-08-16 1996-08-16 Modified colloidal silica

Country Status (1)

Country Link
JP (1) JPH1059708A (en)

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Publication number Priority date Publication date Assignee Title
JP2006502954A (en) * 2002-10-14 2006-01-26 アクゾ ノーベル エヌ.ブイ. Colloidal silica dispersion
US7544726B2 (en) 2002-10-14 2009-06-09 Akzo Nobel N.V. Colloidal silica composition
CN102040224A (en) * 2009-10-22 2011-05-04 株式会社Adeka Hydrophobic core-shell silica particle, hollow silica particle, and manufacturing methods thereof
JP2018002569A (en) * 2016-07-07 2018-01-11 学校法人神奈川大学 Manufacturing method of silica nanoparticles, silica nanoparticles and fluorescent emitter
KR20180005686A (en) 2015-05-11 2018-01-16 닛산 가가쿠 고교 가부시키 가이샤 Aminosilane-modified colloidal silica dispersion and method of manufacturing same
JP2020147465A (en) * 2019-03-14 2020-09-17 日揮触媒化成株式会社 Method for producing modified silica fine particle dispersion

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006502954A (en) * 2002-10-14 2006-01-26 アクゾ ノーベル エヌ.ブイ. Colloidal silica dispersion
US7544726B2 (en) 2002-10-14 2009-06-09 Akzo Nobel N.V. Colloidal silica composition
JP4849800B2 (en) * 2002-10-14 2012-01-11 アクゾ ノーベル ナムローゼ フェンノートシャップ Colloidal silica dispersion
CN102040224A (en) * 2009-10-22 2011-05-04 株式会社Adeka Hydrophobic core-shell silica particle, hollow silica particle, and manufacturing methods thereof
KR20180005686A (en) 2015-05-11 2018-01-16 닛산 가가쿠 고교 가부시키 가이샤 Aminosilane-modified colloidal silica dispersion and method of manufacturing same
US10899893B2 (en) 2015-05-11 2021-01-26 Nissan Chemical Industries, Ltd. Aminosilane-modified colloidal silica dispersion and method of manufacturing same
JP2018002569A (en) * 2016-07-07 2018-01-11 学校法人神奈川大学 Manufacturing method of silica nanoparticles, silica nanoparticles and fluorescent emitter
JP2020147465A (en) * 2019-03-14 2020-09-17 日揮触媒化成株式会社 Method for producing modified silica fine particle dispersion

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