JPH062823B2 - Glycol slurry for polyester addition - Google Patents
Glycol slurry for polyester additionInfo
- Publication number
- JPH062823B2 JPH062823B2 JP2178087A JP17808790A JPH062823B2 JP H062823 B2 JPH062823 B2 JP H062823B2 JP 2178087 A JP2178087 A JP 2178087A JP 17808790 A JP17808790 A JP 17808790A JP H062823 B2 JPH062823 B2 JP H062823B2
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- slurry
- particles
- glycol
- aluminum oxide
- 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.)
- Expired - Fee Related
Links
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyesters Or Polycarbonates (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、酸化アルミニウム粒子を含有する、ポリエス
テル添加用グリコールスラリーに関する。TECHNICAL FIELD The present invention relates to a glycol slurry for adding polyester, which contains aluminum oxide particles.
ポリエステルは優れた物理的、化学的特性を有すること
から、フィルム、ボトル、糸等、各基材に加工され、そ
の適用範囲は拡大している。従来、これらの基材の加工
後の取扱い性を向上させるために、ポリエステル中に微
粒子を含有させる方法が一般に採用されている。Since polyester has excellent physical and chemical properties, it is processed into various base materials such as films, bottles and threads, and its application range is expanding. Conventionally, in order to improve the handleability of these substrates after processing, a method of incorporating fine particles into polyester is generally adopted.
かかる方法で用いられる微粒子としては、炭酸カルシウ
ム、カオリン、シリカ等の粒子が知られているが、最
近、ポリエステル加工品の耐擦傷性の改良効果を有する
酸化アルミニウム粒子が注目されている。Particles of calcium carbonate, kaolin, silica, etc. are known as fine particles used in such a method, but recently, aluminum oxide particles having an effect of improving scratch resistance of a polyester processed product have been attracting attention.
微粒子をポリエステルに添加する方法としては、ポリエ
ステル製造工程中で微粒子をグリコールのスラリーとし
て添加する方法が一般的であるが、微粒子として酸化ア
ルミニウム粒子を用いた場合、該粒子はグリコール中で
の分散性が劣る上、グリコールスラリーとして長期間常
温保存していると、スラリー中に粗大な針状粒子が析出
し、ポリエステル製造工程中のろ過装置で目詰まりを起
こしたり、基材に加工後の製品の品質を悪化させたりす
るため、改良が求められていた。As a method of adding the fine particles to the polyester, a method of adding the fine particles as a slurry of glycol in the polyester production step is generally used. However, when aluminum oxide particles are used as the fine particles, the particles have a dispersibility in glycol. In addition, when stored as a glycol slurry at room temperature for a long time, coarse needle-shaped particles are precipitated in the slurry, causing clogging in the filtration device during the polyester manufacturing process, or the product after being processed into a base material. Improvement was required because it deteriorates the quality.
本発明者らは、上記課題に鑑み、鋭意検討した結果、グ
リコールスラリー中にある特定量の水を含有させること
により、粗大針状粒子の生成を防止でき、酸化アルミニ
ウム粒子の分散性も改良できることを見いだし、本発明
を完成するに至った。The present inventors, in view of the above problems, as a result of diligent studies, by containing a certain amount of water in the glycol slurry, it is possible to prevent the formation of coarse needle-shaped particles, it is also possible to improve the dispersibility of aluminum oxide particles. The present invention has been completed and the present invention has been completed.
すなわち、本発明の要旨は、酸化アルミニウム粒子と該
粒子乾燥重量に対し0.03〜0.20倍量（重量比）の水とを
含有して成る、ポリエステル添加用グリコールスラリー
に存する。That is, the gist of the present invention lies in a glycol slurry for polyester addition, which comprises aluminum oxide particles and 0.03 to 0.20 times the amount (weight ratio) of water with respect to the dry weight of the particles.
以下、本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.
本発明でいう酸化アルミニウム粒子とは、例えば塩化ア
ルミニウムの火焔加水分解によって製造されるものの
外、アルコキシドの加水分解により製造されるものが挙
げられるが、特にこれらに限定されるものではなく、表
面がシランカップリング剤やチタンカップリング剤で処
理された粒子等も含む。なお、酸化アルミニウム粒子は
吸湿しやすく、含水率は通常２重量％程度である。The aluminum oxide particles referred to in the present invention include, for example, those produced by flame hydrolysis of aluminum chloride, and those produced by hydrolysis of alkoxides, but are not particularly limited thereto, and the surface is Particles treated with a silane coupling agent or a titanium coupling agent are also included. The aluminum oxide particles easily absorb moisture, and the water content is usually about 2% by weight.
また、本発明でいうグリコールとは、エチレグリコー
ル、ジエチレングリコール、プロピレングリコール、ブ
タンジオール、１，４−シクロヘキサンジメタノール、
ネオペンチルグリコール等を指し、添加されるポリエス
テルの種類に応じ、適宜選択される。The glycol referred to in the present invention means ethylene glycol, diethylene glycol, propylene glycol, butanediol, 1,4-cyclohexanedimethanol,
Refers to neopentyl glycol and the like, and is appropriately selected depending on the type of polyester to be added.
本発明のグリコールスラリーは、上記酸化アルミニウム
粒子を有するグリコールスラリーであって、水を該粒子
乾燥重量に対し0.03〜0.2倍量（重量比）含有するもの
である。通常、ポリエステル添加用スラリーは、ポリエ
ステルの加水分解やポリエステル重合反応系での突沸を
極力防止するため、スラリー中の水分を除去したものを
用いることが当業者の常識であるが、本発明のスラリー
は、意外なことに、かかるポリエステル添加時の悪影響
を及ぼさないものであり、さらに前記粗大針状粒子の生
成がなく、またグリコールないしポリエステル中での酸
化アルミニウムの分散性を改良することのできるもので
ある。スラリー中の水分量が乾燥酸化アルミニウム粒子
に対し0.03倍量（重量比）未満では、これらの改良効果
が期待できず、乾燥酸化アルミニウム粒子に対し0.2倍
量を超える水分が含まれている場合には、ポリエステル
製造工程で昇温速度が低下したり、突沸したりして、ポ
リエステルの品質を劣化させるので、好ましくない。The glycol slurry of the present invention is a glycol slurry containing the above-mentioned aluminum oxide particles, and contains water in an amount of 0.03 to 0.2 times (weight ratio) the dry weight of the particles. Usually, the polyester addition slurry, to prevent hydrolysis of the polyester and bumping in the polyester polymerization reaction system as much as possible, it is common knowledge of those skilled in the art to use the one from which water in the slurry is removed, but the slurry of the present invention Is, surprisingly, one that does not have an adverse effect upon addition of the polyester, does not generate the coarse needle-like particles, and can improve the dispersibility of aluminum oxide in glycol or polyester. Is. If the water content in the slurry is less than 0.03 times the dry aluminum oxide particles (weight ratio), these improvement effects cannot be expected, and if the water content exceeds 0.2 times the dry aluminum oxide particles. Is not preferable because the quality of the polyester is deteriorated due to a decrease in temperature rising rate or bumping in the polyester manufacturing process.
本発明のスラリーは、グリコールに酸化アルミニウム粒
子および水を加え、数時間攪拌した後、粉砕処理、次い
で分級処理を施して得られる。粉砕処理は、ロッドミ
ル、ボールミル、振動ロッドミル、振動ボールミル、パ
ンミル、ローラーミル、インパクトミル、撹拌粉砕ミ
ル、流体エネルギーミル等を用いて行われ、分級処理
は、半自由うず式、強制うず式、ハイドロサイクロン
式、遠心分離法等の分級装置を用いて行われる。The slurry of the present invention is obtained by adding aluminum oxide particles and water to glycol, stirring the mixture for several hours, pulverizing it, and then classifying it. The crushing process is performed by using a rod mill, ball mill, vibrating rod mill, vibrating ball mill, pan mill, roller mill, impact mill, stirring crushing mill, fluid energy mill, etc. It is carried out using a classification device such as a cyclone type or a centrifugal separation method.
本発明のグリコールスラリー中の酸化アルミニウム粒子
の含有量は、ポリエステルの用途によって異なるが、通
常、５〜４０重量％の範囲であり、該粒子の外に、無機
粒子、有機粒子、界面活性剤を含有するものであっても
よい。The content of aluminum oxide particles in the glycol slurry of the present invention varies depending on the use of polyester, but is usually in the range of 5 to 40% by weight, and in addition to the particles, inorganic particles, organic particles, and a surfactant are added. It may be contained.
以下、実施例により本発明を具体的に説明するが、本発
明はその要旨を超えない限り、以下の実施例に限定され
るものではない。Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist.
実施例 含水率２重量％の酸化アルミニウム粒子５０部、エチレ
ングリコール４５０部に下記表−１に示す水分率となる
よう脱塩水を添加し攪拌後、ガラス型の攪拌粉砕ミルに
て粉砕処理を施し、次いで遠心分離機で紛糾し、１００
０メッシュの金網フィルターでろ過してグリコールスラ
リーを得た。Example 50 parts of aluminum oxide particles having a water content of 2% by weight and 450 parts of ethylene glycol were added with demineralized water so as to have a water content shown in Table 1 below, stirred, and then pulverized by a glass-type stirring pulverizing mill. , Then mix with a centrifuge to 100
A glycol slurry was obtained by filtration with a 0 mesh wire mesh filter.
得られたグリコールスラリーを常温で放置したところ、
長期間、粗大針状粒子の生成は観察されなかった。ま
た、得られたスラリー中の酸化アルミニウム粒子の分散
性は良好であり、ポリエステルに添加後も良好な分散性
を示した。When the obtained glycol slurry was left at room temperature,
No formation of coarse needle-shaped particles was observed for a long period of time. The dispersibility of the aluminum oxide particles in the obtained slurry was good, and the dispersibility was good even after addition to the polyester.
比較例１ 脱塩水を添加しない外は実施例と同様にしてスラリーを
得た。得られたスラリーを常温で放置したところ、２５
日目に粗大針状粒子が生成した。また、酸化アルミニウ
ム粒子のスラリー中およびポリエステル添加後の分散性
は劣っていた。Comparative Example 1 A slurry was obtained in the same manner as in Example except that demineralized water was not added. When the obtained slurry was left at room temperature, 25
Coarse needle-shaped particles were formed on the day. Moreover, the dispersibility of the aluminum oxide particles in the slurry and after the addition of the polyester was poor.
比較例２ 水分率が２５重量％となるよう脱塩水を添加する外は実
施例と同様にしてスラリーを得た。得られたスラリー
は、長期間、粗大針状粒子の生成しないものであった
が、ポリエステルに添加したところ、突沸してしまい、
得られたポリエステルは実用に供することができなかっ
た。Comparative Example 2 A slurry was obtained in the same manner as in Example except that demineralized water was added so that the water content was 25% by weight. The resulting slurry was one in which coarse needle-shaped particles were not formed for a long period of time, but when added to polyester, it suddenly boiled,
The obtained polyester could not be put to practical use.
〔発明の効果〕 本発明の酸化アルミニウム粒子含有グリコールスラリー
は、優れた分散性を有し、かつ、長期間保存しても粗大
粒子が生成しないものであり、ポリエステル添加用スラ
リーとして極めて有用なものである。 [Effects of the Invention] The glycol slurry containing aluminum oxide particles of the present invention has excellent dispersibility, and does not generate coarse particles even after long-term storage, and is extremely useful as a slurry for adding polyester. Is.
Claims (1)
対し0.03〜0.20倍量（重量比）の水とを含有して成る、
ポリエステル添加用グリコールスラリー。1. An aluminum oxide particle and 0.03 to 0.20 times (weight ratio) water based on the dry weight of the particle.
Glycol slurry for polyester addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2178087A JPH062823B2 (en) | 1990-07-05 | 1990-07-05 | Glycol slurry for polyester addition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2178087A JPH062823B2 (en) | 1990-07-05 | 1990-07-05 | Glycol slurry for polyester addition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0465456A JPH0465456A (en) | 1992-03-02 |
| JPH062823B2 true JPH062823B2 (en) | 1994-01-12 |
Family
ID=16042405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2178087A Expired - Fee Related JPH062823B2 (en) | 1990-07-05 | 1990-07-05 | Glycol slurry for polyester addition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062823B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010073830A (en) * | 2008-09-17 | 2010-04-02 | Sumitomo Metal Mining Co Ltd | Lead frame and method of manufacturing same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53114894A (en) * | 1977-03-18 | 1978-10-06 | Toray Ind Inc | Preparation of polyester |
| JPS62199649A (en) * | 1986-02-27 | 1987-09-03 | Toyobo Co Ltd | Production of fine particle dispersion for polyester |
| JPS633899A (en) * | 1986-06-23 | 1988-01-08 | 松下電器産業株式会社 | Gas clothing dryer |
-
1990
- 1990-07-05 JP JP2178087A patent/JPH062823B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53114894A (en) * | 1977-03-18 | 1978-10-06 | Toray Ind Inc | Preparation of polyester |
| JPS62199649A (en) * | 1986-02-27 | 1987-09-03 | Toyobo Co Ltd | Production of fine particle dispersion for polyester |
| JPS633899A (en) * | 1986-06-23 | 1988-01-08 | 松下電器産業株式会社 | Gas clothing dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0465456A (en) | 1992-03-02 |
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