JPH0559613A - Production of polyester fiber having uv ray-shielding performance - Google Patents
Production of polyester fiber having uv ray-shielding performanceInfo
- Publication number
- JPH0559613A JPH0559613A JP24661291A JP24661291A JPH0559613A JP H0559613 A JPH0559613 A JP H0559613A JP 24661291 A JP24661291 A JP 24661291A JP 24661291 A JP24661291 A JP 24661291A JP H0559613 A JPH0559613 A JP H0559613A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- zinc oxide
- polyester fiber
- spinning
- fiber
- 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
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、紫外線遮蔽性能を有す
る酸化亜鉛、酸化チタン等の微粉末を含有し、ブラウ
ス、サマースーツ、スポーツ衣料、カーテン、日傘、帆
布、自動車カバー等衣料分野や産資分野に好適なポリエ
ステル繊維の製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention contains fine powders of zinc oxide, titanium oxide and the like having an ultraviolet shielding property, and is used in the field of clothing such as blouses, summer suits, sports clothing, curtains, parasols, canvas and automobile covers, and industrial fields. The present invention relates to a method for producing a polyester fiber suitable for the field of materials.
【０００２】[0002]
【従来の技術】従来、波長３８０ｎｍ以下の光をほぼ完
全に吸収し、実質的に紫外線を遮蔽する樹脂組成物は、
フィルムやボトル等に成形され写真等の退色防止や食
品、薬品、液晶などの変質防止あるいは窓ガラス等の用
途に使用されている。紫外線を吸収したり、遮蔽する能
力を有する添加剤としては、従来、ベンゾトリアゾー
ル、ベンゾフェノン等の紫外線吸収剤、有機染顔料、酸
化亜鉛、酸化チタン、タルク、炭酸ソーダ等の無機粒子
が知られている。ベンゾトリアゾール、ベンゾフェノン
等の紫外線吸収剤は、融点が高く熱可塑性樹脂へ溶融混
練する場合には熱安定性、耐昇華性、有機物質に対する
相溶性などの点において問題のあるものが多かった。ま
た、有機の紫外線吸収剤あるいは染顔料の中にはある程
度の紫外線吸収効果を有する物があるが、全般的には、
可視光線波長領域における吸収が極めて大きいため、こ
れらを用いる場合は高濃度着色が許される場合に限られ
るとか、その物または分解生成物が皮膚障害の危険性が
あるので注意を要する等の欠点があった。次に、可視光
域では吸収を持たない白色で屈折率の高い無機粒子は塗
料業界をはじめインキ、プラスチック業界等で顔料とし
て用いられているが、これらの中で、酸化チタン、酸化
亜鉛、タルク、カオリン、炭酸カルシウム等は従来から
紫外線遮蔽効果があることが知られている。中でも酸化
チタン、酸化亜鉛は、短波長の吸収端が３４０ｎｍ〜４
００ｎｍ近傍にあることから、これより高い波長域のエ
ネルギーは吸収されて優れた紫外線吸収効果を示すもの
である。これまで、酸化チタンを繊維中に添加した例は
あるが酸化亜鉛をポリエステル重合時に添加した例はな
い。その理由は、ポリエステル重合時に酸化亜鉛を添加
すると繊維中での分散性が悪く、重合時の凝集や紡糸性
不調を引き起こしたり紡糸できたとしても延伸時に酸化
亜鉛の凝集に起因する糸切れの発生等が頻発し延伸性の
低下を引き起こすなど繊維化が困難であったからであ
る。2. Description of the Related Art Conventionally, a resin composition which almost completely absorbs light having a wavelength of 380 nm or less and substantially shields ultraviolet rays has been known.
It is molded into films and bottles and used for prevention of discoloration of photographs, prevention of alteration of foods, chemicals, liquid crystals, etc., and for applications such as window glass. As an additive having the ability to absorb or block ultraviolet rays, conventionally known are ultraviolet absorbers such as benzotriazole and benzophenone, organic dyes and pigments, inorganic particles such as zinc oxide, titanium oxide, talc and sodium carbonate. There is. UV absorbers such as benzotriazole and benzophenone have many problems in terms of thermal stability, sublimation resistance and compatibility with organic substances when they are melt-kneaded into a thermoplastic resin because they have a high melting point. In addition, some organic UV absorbers or dyes and pigments have some UV absorbing effect, but in general,
Since the absorption in the visible light wavelength region is extremely large, when using these, it is limited to cases where high-concentration coloring is allowed, and there is a drawback that caution is required because the product or decomposition product may cause skin damage. there were. Next, white inorganic particles that have no absorption in the visible light range and have a high refractive index are used as pigments in the paint industry, inks, plastics industry, etc. Among these, titanium oxide, zinc oxide, talc It has been conventionally known that kaolin, calcium carbonate, etc. have an ultraviolet shielding effect. Among them, titanium oxide and zinc oxide have short-wavelength absorption edges of 340 nm to 4
Since it is in the vicinity of 00 nm, the energy in the wavelength range higher than this is absorbed and exhibits an excellent ultraviolet absorption effect. So far, there is an example in which titanium oxide is added to the fiber, but there is no example in which zinc oxide is added during polyester polymerization. The reason for this is that when zinc oxide is added during polyester polymerization, the dispersibility in the fiber is poor, causing cohesion during polymerization and spinnability disorder, or even if spinning is possible, the occurrence of yarn breakage due to aggregation of zinc oxide during stretching. This is because it was difficult to form fibers such as frequent occurrence of deterioration of stretchability.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、ポリ
エステル中に酸化亜鉛の微粒子を凝集させることなく均
一に分散させ、そのポリエステルを紡糸することによっ
て優れた紫外線遮蔽性能を有するポリエステル系繊維を
高品質で効率よく製造することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to produce a polyester fiber having excellent UV shielding performance by uniformly dispersing zinc oxide fine particles in polyester without agglomerating them and spinning the polyester. The purpose is to manufacture with high quality and efficiency.
【０００４】[0004]
【課題を解決するための手段】すなわち、本発明は、繊
維中に平均粒子径が０．１〜５μｍの酸化亜鉛を含有す
るポリエステル系繊維を製造するに当り、酸化亜鉛をポ
リエステル系分散媒を用いてスラリー化し、該スラリー
を紡糸直前の工程でポリエステル溶融物に添加して紡糸
することを特徴とするポリエステル系繊維の製造法であ
る。That is, according to the present invention, in producing a polyester fiber containing zinc oxide having an average particle diameter of 0.1 to 5 μm, the zinc oxide is mixed with a polyester dispersion medium. It is a method for producing a polyester fiber, which is characterized in that it is made into a slurry by using it, and the slurry is added to a polyester melt in a step immediately before spinning to be spun.
【０００５】本発明において、酸化亜鉛を分散させるポ
リエステル系分散媒は、例えば、酸成分としてコハク
酸、アジピン酸、セバチン酸、アゼライン酸などを用
い、グリコール成分としてエチレンリコール、トリメチ
レングリコール、１，４ブタンジオール、１，６ヘキサ
ンジオールなどを主体に用い重縮合反応を行って得られ
るポリエステル系分散媒であり平均分子量が２０００〜
４０００のものが好ましい。かかるポリエステル系分散
媒は、例えばアデカアーガス社、大日本インキ化学社、
Ｃ．Ｐ．Ｈａｌｌ社などから入手可能である。該ポリエ
ステル分散媒のポリエステルへの添加量は、添加するこ
とによりポリエステルの粘度低下が起こるので紡糸性を
考慮すると６重量％までが限界である。このとき、酸化
亜鉛のスラリー中濃度は１０〜５０重量％が好ましく、
さらに好ましくは２０〜４０重量％である。スラリー濃
度が低すぎると、所望量の酸化亜鉛を添加するために大
量の分散媒を添加することになり、上記のように紡糸性
に影響が出るので好ましくない。一方、スラリー濃度が
高すぎると、繊維化後の繊維中での酸化亜鉛粒子の分散
性が悪かったり、スラリーの粘度が高くなるため添加口
での吐出斑などが生じることがある。In the present invention, the polyester-based dispersion medium in which zinc oxide is dispersed uses, for example, succinic acid, adipic acid, sebacic acid, azelaic acid or the like as an acid component and ethylene glycol, trimethylene glycol, 1, or 1, as a glycol component. A polyester-based dispersion medium obtained by carrying out a polycondensation reaction mainly using 4-butanediol, 1,6-hexanediol, etc., and having an average molecular weight of 2000 to
It is preferably 4000. Such polyester-based dispersion medium is, for example, Adeka Argus Co., Dainippon Ink and Chemicals,
C. P. It is available from Hall Inc. The addition amount of the polyester dispersion medium to the polyester is limited to 6% by weight in consideration of spinnability because the viscosity of the polyester is lowered by the addition. At this time, the concentration of zinc oxide in the slurry is preferably 10 to 50% by weight,
More preferably, it is 20 to 40% by weight. If the slurry concentration is too low, a large amount of dispersion medium is added to add a desired amount of zinc oxide, and the spinnability is affected as described above, which is not preferable. On the other hand, if the slurry concentration is too high, the dispersibility of the zinc oxide particles in the fiber after fibrization may be poor, or the viscosity of the slurry may be high, which may cause uneven discharge at the addition port.
【０００６】本発明において、紫外線遮蔽効果を有する
成分となる酸化亜鉛の平均粒子径は０．１〜５μｍでな
ければならない。平均粒径が０．１μｍ未満であると添
加後、紡糸までの工程において熱による凝集の可能性が
ありフィルター等の目詰まりの原因となる。一方、５μ
ｍを越えるとやはりフィルター詰まりや断糸等が発生し
やすくなる。仮に、紡糸できたとしても、延伸工程にお
いてローラー巻き付き、糸切れ発生などトラブルの原因
となる。したがって、本発明において平均粒径は０．３
〜１μｍであることが望ましい。In the present invention, the average particle size of zinc oxide, which is a component having an ultraviolet shielding effect, must be 0.1 to 5 μm. If the average particle size is less than 0.1 μm, there is a possibility of agglomeration due to heat in the steps up to spinning after addition, which causes clogging of filters and the like. On the other hand, 5μ
If it exceeds m, filter clogging and thread breakage are likely to occur. Even if the fiber can be spun, it may cause troubles such as winding around the roller and occurrence of yarn breakage in the drawing process. Therefore, in the present invention, the average particle size is 0.3.
It is desirable that it is ˜1 μm.
【０００７】本発明において、酸化亜鉛の添加量は紫外
線遮蔽効果を発揮し得る量であれば特別に限定されない
が、通常０．１〜６重量％，好ましくは１〜４重量％で
ある。また、より高度の紫外線遮蔽効果を期待する場合
は酸化亜鉛と酸化チタンと併用することが好ましい。こ
の場合、酸化チタンと酸化亜鉛の重量比率は特に限定さ
れないが、酸化チタンが多いほうが好ましく、具体的に
は酸化チタン：酸化亜鉛＝９０：１０〜５０：５０、特
に７０：３０〜５０：５０であることが望ましい。特
に、両者を併用する場合においては、両者の合計含有量
で１〜１０重量％となるように調整することが好まし
い。添加量が少なすぎると目標とする紫外線遮蔽効果が
得られず、また、多すぎると紡糸時に粘度低下が著しく
なり紡糸不可能となる。酸化亜鉛を多量に含有させよう
とする場合にはそれだけ分散媒の量が増すため粘度低下
の原因となりやすい。ただし、酸化チタンについては酸
化亜鉛ほど分散性が悪くないので必ずしも酸化亜鉛と同
時に添加する必要性はなく、ポリエステル重合の仕込み
時から紡糸の直前までの任意の段階で添加されていれば
よい。しかし、本発明において、酸化亜鉛を含むスラリ
ーの添加時期は紡糸直前でなければならず、例えば、ポ
リエステルの重合仕込み時や反応途中に添加すると酸化
亜鉛粒子の凝集が激しく起こり好ましくない。そして、
本発明における「紡糸直前」とは、実質的な重合完了後
から紡糸ノズルからポリマが吐出されるまでの間の任意
の段階と解されるべきである。In the present invention, the amount of zinc oxide added is not particularly limited as long as it can exert an ultraviolet shielding effect, but is usually 0.1 to 6% by weight, preferably 1 to 4% by weight. Further, when a higher ultraviolet shielding effect is expected, it is preferable to use zinc oxide and titanium oxide together. In this case, the weight ratio of titanium oxide and zinc oxide is not particularly limited, but it is preferable that the amount of titanium oxide is large, specifically, titanium oxide: zinc oxide = 90: 10 to 50:50, particularly 70:30 to 50:50. Is desirable. In particular, when both are used in combination, it is preferable to adjust the total content of both to be 1 to 10% by weight. If the amount added is too small, the desired UV-shielding effect will not be obtained, while if it is too large, the viscosity will decrease significantly during spinning, making spinning impossible. If a large amount of zinc oxide is to be contained, the amount of the dispersion medium increases, and this tends to cause a decrease in viscosity. However, titanium oxide is not as bad in dispersibility as zinc oxide, so it is not always necessary to add it at the same time as zinc oxide, and it may be added at any stage from the time of preparation of polyester polymerization to immediately before spinning. However, in the present invention, the zinc oxide-containing slurry should be added immediately before spinning. For example, if the zinc oxide-containing slurry is added during the polymerization preparation of polyester or during the reaction, the zinc oxide particles agglomerate violently, which is not preferable. And
The term "immediately before spinning" in the present invention should be understood as an arbitrary stage from the completion of substantial polymerization to the discharging of the polymer from the spinning nozzle.
【０００８】さらに、本発明においては、酸化亜鉛や酸
化チタンのほかに公知の紫外線吸収剤を添加してもよ
く、熱安定性あるいは紫外線吸収性能を考慮すると２−
（２´−ヒドロキシ−５´−メチルフェニル）ベンゾト
リアゾール、２−（２´−ヒドロキシ−５´−ｔ−ブチ
ルフェニル）ベンゾトリアゾール、２−（２´−ヒドロ
キシ−３´，５´−ジ−ｔ−ブチルフェニル）ベンゾト
リアゾール等のベンゾトリアゾール系化合物や２，４−
ジヒドロキシベンゾフェノン、２−ヒドロキシ−４−メ
トキシベンゾフェノン、２−ヒドロキシ−４−オクトキ
シベンゾフェノン、２，２´−ジヒドロキシ−４−メト
キシベンゾフェノン等のベンゾフェノン系化合物の紫外
線吸収剤を上記のスラリーに混練して使用するのが好ま
しい。これらの紫外線吸収剤は繊維中に１０００〜２０
０００ppm 含有するように添加することが好ましく、１
０００ppm 未満では紫外線の吸収効果が低く２００００
ppmを越えると過剰添加によるポリマの着色が目立つの
で好ましくない。紫外線吸収剤は、熱安定性の点から高
温（例えば２５０℃以上）下に長時間さらすと熱分解が
起こりやすくかつ着色するため紡糸直前に添加する本発
明の方法が好ましい。Further, in the present invention, a known ultraviolet absorber may be added in addition to zinc oxide and titanium oxide, and in consideration of thermal stability or ultraviolet absorbing performance, 2-
(2'-Hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-5'-t-butylphenyl) benzotriazole, 2- (2'-hydroxy-3 ', 5'-di- benzotriazole compounds such as t-butylphenyl) benzotriazole and 2,4-
An ultraviolet absorber of a benzophenone compound such as dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, and 2,2'-dihydroxy-4-methoxybenzophenone is kneaded into the above slurry. Preference is given to using. These UV absorbers are contained in the fiber in the range of 1000-20
It is preferable to add it so as to contain 000 ppm.
If it is less than 000 ppm, the effect of absorbing ultraviolet rays is low and 20,000.
If it exceeds ppm, coloring of the polymer due to excessive addition becomes conspicuous, which is not preferable. From the viewpoint of thermal stability, the ultraviolet absorber is likely to undergo thermal decomposition when exposed to a high temperature (for example, 250 ° C. or higher) for a long time and is colored, so that the method of the present invention is preferably added immediately before spinning.
【０００９】本発明におけるポリエステルとしてはポリ
エチレンテレフタレート、ポリブチレンテレフタレート
等のポリエステルや、テレフタル酸、イソフタル酸、ナ
フタリン２，６ジカルボン酸、フタール酸、α，β−
（４−カルボキシフェノキシ）エタン、４，４′−ジカ
ルボキシジフェニル５−ナトリウムスルホイソフタル酸
などの芳香族ジカルボン酸、もしくはアジピン酸、セバ
チン酸などの脂肪族ジカルボン酸またはこれらのエステ
ル形成性誘導体と、エチレングリコール、ジエチレング
リコール、１，４ブタンジオール、ネオペンチルグリコ
ール、シクロヘキサンジメタノール、ポリエチレングリ
コール、ポリテトラメチレングリコールなどのジオール
化合物とから合成される繊維形成性ポリエステルであ
り、その構成単位の８０モル％以上が、特には９０モル
％以上がポリエチレンテレフタレート単位またはポリブ
チレンテレフタレート単位であるポリエステルが好まし
く、尚且つ、融点が２００℃以上であることが望まし
い。融点が低くなると耐熱性不十分のため衣料用の繊維
として用途が限定されくるため好ましくない。また、ポ
リエステル中には少量の添加剤、例えば酸化防止剤、難
燃剤、抗菌剤、消臭剤、蛍光増白剤、安定剤等を含んで
いても差し支えない。Examples of the polyester in the present invention include polyesters such as polyethylene terephthalate and polybutylene terephthalate, terephthalic acid, isophthalic acid, naphthalene 2,6 dicarboxylic acid, phthalic acid, α, β-
Aromatic dicarboxylic acids such as (4-carboxyphenoxy) ethane, 4,4′-dicarboxydiphenyl 5-sodium sulfoisophthalic acid, or aliphatic dicarboxylic acids such as adipic acid and sebacic acid, or ester-forming derivatives thereof; A fiber-forming polyester synthesized from a diol compound such as ethylene glycol, diethylene glycol, 1,4-butanediol, neopentyl glycol, cyclohexanedimethanol, polyethylene glycol or polytetramethylene glycol, and 80 mol% or more of its constituent units However, particularly, a polyester having 90 mol% or more of polyethylene terephthalate units or polybutylene terephthalate units is preferable, and a melting point of 200 ° C. or more is desirable. When the melting point is low, the heat resistance is insufficient and the use as a fiber for clothing is limited, which is not preferable. Further, the polyester may contain a small amount of additives such as antioxidants, flame retardants, antibacterial agents, deodorants, optical brighteners, stabilizers and the like.
【００１０】本発明においては、ポリエステルの繊維化
の方法自体は従来公知の繊維化技術を採用することが可
能であり、繊維の断面形態についても丸断面の外、偏平
断面、ドッグボーン断面、Ｔ型断面、３〜６角断面、３
〜１４葉断面、中空断面等種々の断面繊維としたり、サ
イドバイサイド型、芯鞘型、多層貼合型、ランダム複合
型、海島型等の他成分系繊維としたり様々なバリエーシ
ョンが可能であるが、本発明においては、Ｔ型断面や８
〜１４葉程度の偏平多葉断面繊維とすることが得られる
繊維の光沢度等の点から好ましい。In the present invention, as the method of fiberizing polyester itself, conventionally known fiberizing technology can be adopted, and the cross-sectional shape of the fiber is not only round but also flat, dogbone and T-shaped. Mold cross section, 3 to 6 angle cross section, 3
-14 various cross-section fibers such as leaf cross section, hollow cross section, and other component type fibers such as side-by-side type, core-sheath type, multi-layer bonding type, random composite type, sea-island type, etc. In the present invention, a T-shaped cross section or 8
It is preferable to have a flat multi-leaf cross-section fiber having about 14 to 14 leaves from the viewpoint of the glossiness of the obtained fiber.
【００１１】[0011]
【実施例】以下、実施例により本発明を具体的に説明す
るが、本発明は何等これらに限定されるものではない。
なお、実施例における紫外線透過率の評価は下記の方法
によるものである。紫外線透過率：紫外線強度積算計の
センサー部に不織布試料を１枚覆い、同時にもう１台の
センサー部には試料をつけずに紫外線を測定し、次式で
紫外線透過率を求める。 紫外線透過率（％）＝（Ｕ／Ｕ0）×１００ Ｕ ：試料側紫外線量 Ｕ0：無試料側紫外線量EXAMPLES The present invention will now be specifically described with reference to examples, but the present invention is not limited thereto.
The evaluation of the ultraviolet transmittance in the examples is based on the following method. Ultraviolet transmittance: The sensor part of the ultraviolet intensity integrator is covered with one non-woven fabric sample, and at the same time, the ultraviolet is measured without attaching the sample to the other sensor part, and the ultraviolet transmittance is calculated by the following formula. Ultraviolet transmittance (%) = (U / U0) x 100 U: UV amount on the sample side U0: UV amount on the non-sample side
【００１２】実施例１ テレフタル酸ジメチル１００重量部、エチレングリコー
ル３８重量部、三酸化アンチモン０．０４重量部、平均
粒径０．５μｍの酸化チタン（チタン工業社製）２重量
部をエステル化槽に仕込み、１６０〜２４０℃まで徐々
に昇温しながらエステル化反応を行い、その後、重縮合
反応槽にて減圧し、２８０℃まで昇温し、所定の重合度
まで重縮合した後、紡糸するにあたり、最終重合槽から
紡糸口金までのライン途中で添加剤仕込みラインを用い
て平均粒径０．６μｍの酸化亜鉛および紫外線吸収剤
（ＵＶＡ６３５Ｌ；ＢＡＳＦ社製）を含有した５０％濃
度のアジピン酸系ポリエステルスラリーをポリマ流に対
して１重量％添加し、２８０℃の紡糸温度、１０００ｍ
／分の引取速度で紡糸を行った。紡糸後、常法に従い延
伸、捲縮、熱処理、切断し、２デニール×５１ｍｍの原
綿を得た。繊維中の酸化チタン、酸化亜鉛の分散性は良
好であった。Example 1 100 parts by weight of dimethyl terephthalate, 38 parts by weight of ethylene glycol, 0.04 parts by weight of antimony trioxide, and 2 parts by weight of titanium oxide (manufactured by Titanium Industry Co., Ltd.) having an average particle size of 0.5 μm were esterified. , The esterification reaction is performed while gradually raising the temperature to 160 to 240 ° C., after which the pressure is reduced in a polycondensation reaction tank, the temperature is raised to 280 ° C., polycondensation is performed to a predetermined degree of polymerization, and then spinning is performed. In the process, from the final polymerization tank to the spinneret, a 50% concentration adipic acid system containing zinc oxide having an average particle size of 0.6 μm and an ultraviolet absorber (UVA635L; manufactured by BASF) was added using an additive charging line. Add 1% by weight of polyester slurry to the polymer stream, spinning temperature of 280 ° C., 1000 m
Spinning was carried out at a take-off speed of / min. After spinning, it was stretched, crimped, heat-treated and cut by a conventional method to obtain 2 denier × 51 mm raw cotton. The dispersibility of titanium oxide and zinc oxide in the fiber was good.
【００１３】実施例２ 実施例１と同じ方法にて、仕込み時に平均粒径０．５μ
ｍの酸化チタンを３重量％添加し、所定の重合度となる
ようにポリエステルを重合した後、最終重合槽から紡糸
口金までのラインで酸化亜鉛を１重量％と紫外線吸収剤
（ＵＶＡ６３５Ｌ；ＢＡＳＦ社製）を１０００ppm 含有
するアジピン酸系ポリエステルスラリーを添加し、紡糸
を行った。紡糸後、常法に従い延伸、捲縮、熱処理、切
断し、２デニール×５１ｍｍの原綿を得た。繊維中の酸
化チタン、酸化亜鉛の分散性は良好であった。Example 2 Using the same method as in Example 1, the average particle size was 0.5 μm when charged.
3% by weight of titanium oxide of m was added to polymerize the polyester to a predetermined degree of polymerization, and then 1% by weight of zinc oxide and an ultraviolet absorber (UVA635L; BASF Corporation) were used in the line from the final polymerization tank to the spinneret. (Manufactured by Mitsui Chemical Co., Ltd.) was added and adipic acid-based polyester slurry was added, and spinning was performed. After spinning, it was stretched, crimped, heat-treated and cut by a conventional method to obtain 2 denier × 51 mm raw cotton. The dispersibility of titanium oxide and zinc oxide in the fiber was good.
【００１４】比較例１ ポリエステルの重合を行うにあたり、仕込み時に平均粒
径０．６μｍの酸化亜鉛０．５重量％と０．５μｍの酸
化チタン２重量％を添加すること以外は実施例１と同様
にしてエステル化を行った。この結果、エステル化槽に
おいて酸化亜鉛の凝集物の形成が認められ、エステル化
槽から重合槽への移送の際、フィルター詰まりが生じ重
合を中止せざるを得なかった。Comparative Example 1 The same as Example 1 except that 0.5% by weight of zinc oxide having an average particle size of 0.6 μm and 2% by weight of titanium oxide having an average particle size of 0.6 μm were added when the polyester was polymerized. Was esterified. As a result, formation of zinc oxide agglomerates was observed in the esterification tank, and during transfer from the esterification tank to the polymerization tank, filter clogging occurred and polymerization had to be stopped.
【００１５】比較例２ 実施例１と同じ重合条件で、酸化チタンを０．５重量部
添加してポリエステルを重合し、実施例１と同様にして
原綿を得た。Comparative Example 2 Under the same polymerization conditions as in Example 1, 0.5 part by weight of titanium oxide was added to polymerize polyester, and raw cotton was obtained in the same manner as in Example 1.
【００１６】次いで、実施例１、２および比較例２で得
られた原綿を用いて同じ条件下で目付４０ｇ／ｍ↑2、
厚さ１ｍｍの不織布を作成し、各々の紫外線透過率を測
定した。その結果を表１に示した。Then, using the raw cotton obtained in Examples 1 and 2 and Comparative Example 2, a basis weight of 40 g / m 2 was obtained under the same conditions.
A non-woven fabric having a thickness of 1 mm was prepared and the ultraviolet transmittance of each was measured. The results are shown in Table 1.
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【発明の効果】本発明の製造方法によれば、従来、ポリ
エステルに微粒子の状態で均一に分散することが不可能
とされてきた酸化亜鉛を、凝集させずに均一に分散でき
るようになり、それによって、紡糸調子の良好な紫外線
遮蔽性ポリエステル系繊維を効率よく製造することが可
能となった。According to the production method of the present invention, zinc oxide, which has hitherto been impossible to be uniformly dispersed in polyester in the form of fine particles, can be uniformly dispersed without agglomeration. As a result, it became possible to efficiently produce a UV-shielding polyester fiber having a good spinning condition.
Claims (3)
酸化亜鉛を含有するポリエステル系繊維を製造するに当
り、酸化亜鉛をポリエステル系分散媒を用いてスラリー
化し、該スラリーを紡糸直前の工程でポリエステル溶融
物に添加して紡糸することを特徴とするポリエステル系
繊維の製造法。1. When producing a polyester fiber containing zinc oxide having an average particle diameter of 0.1 to 5 μm in the fiber, zinc oxide is slurried using a polyester dispersion medium, and the slurry is immediately before spinning. A method for producing a polyester fiber, which comprises adding to a polyester melt in the step of step 1 and spinning.
酸化チタンを紡糸直前までの任意の段階で添加すること
を特徴とする請求項１に記載のポリエステル系繊維の製
造法。2. The method for producing a polyester fiber according to claim 1, wherein titanium oxide having an average particle diameter of 0.1 to 5 μm is further added at an arbitrary stage immediately before spinning.
チタン：酸化亜鉛＝９０：１０〜５０：５０となるよう
に両者を同時または別々に添加することを特徴とする請
求項１に記載のポリエステル系繊維の製造法。3. The method according to claim 1, wherein the zinc oxide and the titanium oxide are added simultaneously or separately so that the weight ratio of the titanium oxide and the zinc oxide is 90:10 to 50:50. Manufacturing method of polyester fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24661291A JPH0559613A (en) | 1991-08-30 | 1991-08-30 | Production of polyester fiber having uv ray-shielding performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24661291A JPH0559613A (en) | 1991-08-30 | 1991-08-30 | Production of polyester fiber having uv ray-shielding performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0559613A true JPH0559613A (en) | 1993-03-09 |
Family
ID=17150997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24661291A Pending JPH0559613A (en) | 1991-08-30 | 1991-08-30 | Production of polyester fiber having uv ray-shielding performance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0559613A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07197309A (en) * | 1993-12-28 | 1995-08-01 | Sumitomo Osaka Cement Co Ltd | Fiber, its production and fiber product |
| CN102643519A (en) * | 2012-05-04 | 2012-08-22 | 绍兴文理学院 | Preparation method of nanometer ultraviolet resistant master batches for superfine polyester fibers |
-
1991
- 1991-08-30 JP JP24661291A patent/JPH0559613A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07197309A (en) * | 1993-12-28 | 1995-08-01 | Sumitomo Osaka Cement Co Ltd | Fiber, its production and fiber product |
| CN102643519A (en) * | 2012-05-04 | 2012-08-22 | 绍兴文理学院 | Preparation method of nanometer ultraviolet resistant master batches for superfine polyester fibers |
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