JPH07100754B2 - Fluorine resin composition - Google Patents
Fluorine resin compositionInfo
- Publication number
- JPH07100754B2 JPH07100754B2 JP2272142A JP27214290A JPH07100754B2 JP H07100754 B2 JPH07100754 B2 JP H07100754B2 JP 2272142 A JP2272142 A JP 2272142A JP 27214290 A JP27214290 A JP 27214290A JP H07100754 B2 JPH07100754 B2 JP H07100754B2
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- Prior art keywords
- resin composition
- copolymer
- average molecular
- molecular weight
- number average
- 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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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、高度の透明性を有するとともに耐熱性、耐溶
剤性に優れた弗素系樹脂組成物に関するものであり、光
フアイバ、光学レンズ、フイルム形成材料としての適性
を備えた樹脂組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a fluorine-based resin composition having a high degree of transparency and excellent heat resistance and solvent resistance, and an optical fiber, an optical lens, The present invention relates to a resin composition having suitability as a film forming material.
弗素系重合体は一般的に耐熱性、耐溶剤性、耐水性に優
れており、ポリテトラフルオロエチレン、ポリフツ化ビ
ニリデンなどが工業製品として作られ種々の分野で利用
されている。Fluorine-based polymers are generally excellent in heat resistance, solvent resistance, and water resistance, and polytetrafluoroethylene, polyvinylidene fluoride and the like are manufactured as industrial products and used in various fields.
しかし、これらの従来開発されてきた弗素系重合体は結
晶性重合体であり、その透明性が不足するため、高い透
明性を備えていることが要求される光学材料としては使
いにくい重合体である。However, these conventionally developed fluoropolymers are crystalline polymers, and their transparency is insufficient. Therefore, they are polymers that are difficult to use as optical materials required to have high transparency. is there.
透明性の優れたフツ素系重合体としてはパーフルオロア
ルキルメタクリレート系重合体が知られており、この重
合体は光フアイバクラツドとして使用されているもの
の、耐熱性、耐溶剤性が十分ではなく、耐環境特性に優
れた素材としての適性は不十分であるといわれている。A perfluoroalkylmethacrylate polymer is known as a fluorine-based polymer having excellent transparency, and although this polymer is used as an optical fiber cladding, it does not have sufficient heat resistance and solvent resistance, It is said that its suitability as a material with excellent environmental characteristics is insufficient.
特開昭63−18964号公報には、次のユニツト〔Ａ〕及び
〔Ｂ〕 CF2CF2 〔Ａ〕 の共重合体である無定形重合体が示されており、この無
定形重合体は優れた透明性と耐熱性及び耐溶剤性を備え
ていることが示されている。Japanese Patent Laid-Open No. 63-18964 discloses the following units [A] and [B] CF 2 CF 2 [A]. It is shown that an amorphous polymer which is a copolymer of (1) and (2) has excellent transparency, heat resistance and solvent resistance.
また、米国特許第4,754,009号には、一般式〔Ｂ〕で示
されるパーフルオロ−2,2−ジメチル−1,3−ジオキゾー
ルと他の重合性フツ素含有モノマーとの共重合体が示さ
れ、これらの共重合体のガラス転移温度は少なくとも14
0℃と示されるとおり、これらの共重合体は優れた耐熱
性を備えているものと考えられる。US Pat. No. 4,754,009 shows a copolymer of perfluoro-2,2-dimethyl-1,3-dioxazole represented by the general formula [B] and another polymerizable fluorine-containing monomer, The glass transition temperature of these copolymers is at least 14
As shown by 0 ° C., these copolymers are considered to have excellent heat resistance.
しかし、パーフルオロ−2,2−ジメチル−1,3−ジオキゾ
ールと他の共重合可能なモノマーとの共重合体はユニツ
ト〔Ｂ〕の共重合量が30モル％よりも少なくなると、こ
の共重合体のガラス転移温度が低くなつて、その耐熱性
が損われる共に、部分的な結晶性も現われるようにな
り、その透明性が低下するという難点も発現する。However, a copolymer of perfluoro-2,2-dimethyl-1,3-dioxole and another copolymerizable monomer is used when the copolymerization amount of the unit [B] is less than 30 mol%. When the glass transition temperature of the coalescence is lowered, its heat resistance is impaired, and at the same time, partial crystallinity also appears, resulting in a problem that its transparency is lowered.
共重合体ユニツト〔Ｂ〕の共重合量が30モル％を越えて
多い共重合体はそのガラス転移点が高く、非結晶性重合
体で透明性良好なものとなるが、ポリマー構造が剛直な
ため、この共重合体より作られたフイルムはその破断伸
度が低く、破断し易くなる傾向がある。A copolymer having a large amount of the copolymer unit [B] exceeding 30 mol% has a high glass transition point and is an amorphous polymer with good transparency, but the polymer structure is rigid. Therefore, the film made from this copolymer has a low elongation at break and tends to be easily broken.
パーフルオロ−2,2−ジメチル−1,3−ジオキゾール89モ
ル％とテトラフルオロエチレン11モル％の共重合体は、
ガラス転移温度が250℃と高い耐熱性を備えているが、
この共重合体より作つたフイルムの破断伸度は4.3％と
極めて小さいものである。The copolymer of perfluoro-2,2-dimethyl-1,3-dioxazole 89 mol% and tetrafluoroethylene 11 mol% is
It has high heat resistance with a glass transition temperature of 250 ° C,
The breaking elongation of the film made from this copolymer is 4.3%, which is extremely small.
特開昭63−18964号公報には共重合体ユニツト〔Ｂ〕の
含有量が56.9モル％、テトラフルオロエチレン43.1モル
％の共重合体のガラス転移点は119℃であるが、この共
重合体から得られたフイルムの破断伸度は4.4％と低
く、また共重合体ユニツト〔Ｂ〕36.6モル％、テトラフ
ルオロエチレン63.4モル％の共重合体のガラス転移点は
90℃であり、この共重合体より作られたフイルムの破断
伸度は4.1％と低いものであることが知られている。一
方、共重合体ユニツト〔Ｂ〕22.1モル％とテトラフルオ
ロエチレン77.9モル％の共重合体のガラス転移温度は73
℃であるが、この共重合体から作られたフイルムの破断
伸度は58.2％と高いものとすることができるが、このフ
イルムの耐熱性は十分なものではない。The glass transition point of a copolymer having a copolymer unit [B] content of 56.9 mol% and tetrafluoroethylene of 43.1 mol% is 119 ° C. in JP-A-63-18964. The breaking elongation of the film obtained from was as low as 4.4%, and the glass transition point of the copolymer of copolymer unit [B] 36.6 mol% and tetrafluoroethylene 63.4 mol% was
It is known to be 90 ° C., and the breaking elongation of the film made from this copolymer is as low as 4.1%. On the other hand, the glass transition temperature of the copolymer unit [B] 22.1 mol% and tetrafluoroethylene 77.9 mol% is 73
Although the breaking elongation of the film made from this copolymer can be as high as 58.2%, the heat resistance of this film is not sufficient.
パーフルオロ−2,2−ジメチル−1,3−ジオキゾールを30
モル％以上共重合した共重合体は、良好な透明性と良好
な耐熱性を備えた非晶質重合体であるが、この共重合体
より作られたフイルムの破断伸度は７％以下と極めて低
く、その取扱い性が不足し、フイルムや光学材料、光フ
アイバクラツデイングとして使用することが難しい。30 perfluoro-2,2-dimethyl-1,3-dioxazole
The copolymer copolymerized by more than mol% is an amorphous polymer having good transparency and good heat resistance, but the breaking elongation of the film made from this copolymer is 7% or less. It is extremely low and its handling properties are insufficient, making it difficult to use as a film, optical material, or optical fiber cladding.
そこで本発明者等は、高い耐熱性と透明性を備えた非晶
質重合体であり、かつ、高い破断伸度を備えたフイルム
を作り得るパーフルオロ−2,2−ジメチル−1,3−ジオキ
ゾール系重合体組成物を得ることを目的として検討した
結果本発明を完成したものであり、その要旨とするとこ
ろは繰り返し単位〔Ｂ〕 を少なくとも30重量％含有する数平均分子量15,000以上
の共重合体（Ｉ）及び パーフルオロアルキルエーテル〔Ｃ〕を繰り返し単位と
して有する数平均分子量1000以上の化合物（II）とから
なる樹脂組成物にある。Therefore, the present inventors are an amorphous polymer having high heat resistance and transparency, and perfluoro-2,2-dimethyl-1,3-, which can make a film having a high breaking elongation. As a result of studies aimed at obtaining a dioxazole-based polymer composition, the present invention has been completed, and the gist thereof is the repeating unit [B]. A resin composition comprising a copolymer (I) having a number average molecular weight of 15,000 or more containing at least 30% by weight and a compound (II) having a number average molecular weight of 1,000 or more having perfluoroalkyl ether [C] as a repeating unit. .
繰り返し単位〔Ｂ〕を少なくとも30重量％含有する共重
合体は、この共重合体が比較的高いガラス転移温度を有
すること、透明性の高い非晶質重合体であることが要求
され、この要求を満たした重合体とするには共重合体中
に含まれる繰り返し単位〔Ｂ〕の含有量は少なくとも30
モル％、好しくは少なくとも40〜90モル％である。繰り
返し単位〔Ｂ〕と共重合せしめる他のコモノマーとして
は何等制限を受けないが、とくに含フツ素ビニルモノマ
ーをコモノマーとして用いることにより、低屈折率で耐
水性、耐溶剤性、難燃性等に優れた重合体となる。これ
らコモノマーとしてはテトラフルオロエチレン、クロロ
トリフルオロエチレン、ビニリデンフルオライド、ヘキ
サフルオロプロピレン、トリフルオロエチレン、パーフ
ルオロ（アルキルビニルエーテル）、フルオロビニルエ
ーテル、ビニルフルオライド、（パーフルオロアルキ
ル）エチレン等をその具体例として挙げることができ
る。A copolymer containing at least 30% by weight of the repeating unit [B] is required to have a relatively high glass transition temperature and to be an amorphous polymer having high transparency. The content of the repeating unit [B] contained in the copolymer should be at least 30
Mol%, preferably at least 40-90 mol%. Other comonomers that can be copolymerized with the repeating unit [B] are not limited in any way, but especially by using a fluorine-containing vinyl monomer as a comonomer, it is possible to obtain a low refractive index, water resistance, solvent resistance, flame retardancy, etc. It becomes an excellent polymer. Specific examples of these comonomers include tetrafluoroethylene, chlorotrifluoroethylene, vinylidene fluoride, hexafluoropropylene, trifluoroethylene, perfluoro (alkyl vinyl ether), fluorovinyl ether, vinyl fluoride and (perfluoroalkyl) ethylene. Can be mentioned as.
繰り返し単位〔Ｂ〕を含むフツ素系重合体（Ｉ）の数平
均分子量は少なくとも15,000であることが必要である。
数平均分子量が15,000以上の重合体（Ｉ）はその成形性
に優れており、高耐熱性で透明性も良好であり、化学的
特性、機械的特性に優れた成形品を作ることができる。The number average molecular weight of the fluorine-based polymer (I) containing the repeating unit [B] needs to be at least 15,000.
The polymer (I) having a number average molecular weight of 15,000 or more has excellent moldability, high heat resistance and good transparency, and a molded product excellent in chemical properties and mechanical properties can be produced.
本発明を実施するに際して用いるパーフルオロアルキル
エーテルを繰り返し単位として有する化合物（II）は非
晶質化合物であり、その数平均分子量は1000以上のもの
であることが必要である。数平均分子量が1000未満の化
合物は、繰り返し単位〔Ｂ〕を有する重合体との相溶性
の点が十分でなく、このような樹脂組成物より作られた
成形体は、その表面に化合物（II）が経時的にブリード
アウトするという不都合が生じ易い。パーフルオロアル
キルエーテルよりなる繰り返し単位の例としては−CF2C
F2O−， 等を挙げることができる。重合体（Ｉ）と化合物（II）
との混合比は99.9/0.1〜50/50、好しくは99.5/0.5〜60/
40なる範囲で用いた場合、破断伸度20％以上のフイルム
を作ることができ、この重合体組成物より作られた成形
品のハンドリング性を著るしく向上せしめたものとする
ことができる。The compound (II) having perfluoroalkyl ether as a repeating unit used in the practice of the present invention is an amorphous compound, and its number average molecular weight needs to be 1000 or more. A compound having a number average molecular weight of less than 1000 does not have sufficient compatibility with the polymer having the repeating unit [B], and a molded article made from such a resin composition has a compound (II ) Easily bleeds out over time. -CF 2 C Examples of the repeating units consisting of perfluoroalkyl ether
F 2 O-, Etc. can be mentioned. Polymer (I) and compound (II)
Mixing ratio with 99.9 / 0.1 to 50/50, preferably 99.5 / 0.5 to 60 /
When used in the range of 40, a film having a breaking elongation of 20% or more can be produced, and a molded article produced from this polymer composition can be remarkably improved in handleability.
本発明の樹脂組成物は、弗素系物質の混合物であり、互
いの相溶性は極めて高く、透明で、耐熱性、耐薬品性を
備え高伸度な成形品、すなわちタフネスの高い成形品を
作り得るという特徴がある。The resin composition of the present invention is a mixture of fluorine-based substances, has a high compatibility with each other, is transparent, has heat resistance and chemical resistance, and has a high elongation, that is, a molded product having high toughness. There is a feature of getting it.
とくに、繰り返し単位〔Ａ〕を含む共重合体（Ｉ）の屈
折率は1.29〜1.34の範囲にあり、低分子量含弗素化合物
〔II〕の屈折率は1.29〜1.31という特徴を有しており、
本発明の樹脂組成物の屈折率は1.29〜1.34の範囲のもの
とすることができるという大きな特徴を有しており、光
フアイバのクラツテイングとしての適性を有している。In particular, the copolymer (I) containing the repeating unit [A] has a refractive index of 1.29 to 1.34, and the low molecular weight fluorine-containing compound [II] has a refractive index of 1.29 to 1.31.
The resin composition of the present invention has a great feature that it can have a refractive index in the range of 1.29 to 1.34, and has a suitability for optical fiber cladding.
本発明の樹脂組成物を光フアイバクラツテイングとする
際の光フアイバコアとしてはポリメチルメタクリレー
ト、石英、多成分ガラス、ポリスチレン、ポリカーボネ
ート、ポリ−４−メチルペンテン−１、フツ化アルキル
メタクリレートポリマー、フツ化アルキルアクリレート
ポリマー、フツ化アルキル・α−フルオロアクリレート
ポリマー、フツ化スチレンポリマー、フツ素化ポリカー
ボネート、重水素化ポリメチルメタクリレートなどを挙
げることができる。また、本発明の樹脂組成物をクラツ
テイングとすることにより高開口数で明るい光フアイバ
を作ることができる。As the optical fiber core when the resin composition of the present invention is used as optical fiber cladding, polymethylmethacrylate, quartz, multi-component glass, polystyrene, polycarbonate, poly-4-methylpentene-1, fluorinated alkylmethacrylate polymer, fluorinated Examples thereof include alkyl acrylate polymers, fluorinated alkyl / α-fluoro acrylate polymers, fluorinated styrene polymers, fluorinated polycarbonates, deuterated polymethyl methacrylate and the like. Further, by using the resin composition of the present invention as a cladding, a bright optical fiber with a high numerical aperture can be produced.
本発明の樹脂組成物は、コーテイング法、押出成形法等
にて成形でき、コーテイング材、フイルム、シート、耐
候性フイルム、レンズ、気体分離膜、気体濃縮膜などと
して種々の分野で利用することができる。The resin composition of the present invention can be molded by a coating method, an extrusion molding method or the like, and can be used in various fields as a coating material, a film, a sheet, a weather resistant film, a lens, a gas separation membrane, a gas concentration membrane and the like. it can.
次に本発明を実施例により具体的に説明するがこの説明
によつて本発明は限定されるものではない。Next, the present invention will be specifically described by way of examples, but the present invention is not limited by the description.
実施例１ パーフルオロ−2,2−ジメチル−1,3−ジオキゾール73モ
ル％及びテトラフルオロエチレン27モル％からなる共重
合体（Ｉ）は、パーフルオロ（２−ブチルテトラヒドロ
フラン）を用いて25℃で測定した固有粘度〔η〕が0.3
3、数平均分子量57,700であり、ガラス転移温度が202℃
であつた。Example 1 A copolymer (I) consisting of 73 mol% of perfluoro-2,2-dimethyl-1,3-dioxole and 27 mol% of tetrafluoroethylene was prepared by using perfluoro (2-butyltetrahydrofuran) at 25 ° C. Intrinsic viscosity [η] measured by
3, number average molecular weight 57,700, glass transition temperature 202 ℃
It was.
この共重合体からなる粉末90重量部及びデムナムＳ−20
0〔商品名：ダイキン（社）製のＦCF2CF2CF2OnCF2C
F3で表わされる化合物〔II〕で数平均分子量8,400屈折
率＝1.298〕を主成分とするポリ−パーフルオロプロピ
ルエーテル（II）10重量部を混合して、高速撹拌翼付き
ミキサー中で150℃に加熱しながら混合して均一な樹脂
組成物を得た。この樹脂組成物の屈折率は1.3081であつ
た。90 parts by weight of powder consisting of this copolymer and Demnum S-20
0 [trade name: Daikin (company) made of FCF 2 CF 2 CF 2 O n CF 2 C
The compound [II] represented by F 3 was mixed with 10 parts by weight of poly-perfluoropropyl ether (II) having a number average molecular weight of 8,400 and a refractive index of 1.298 as a main component, and the mixture was mixed at 150 ° C. in a mixer with a high-speed stirring blade. A uniform resin composition was obtained by mixing while heating. The refractive index of this resin composition was 1.3081.
この樹脂組成物は空気中250℃に２時間保持した後も重
量減少は0.7重量％であり、蒸発分は少ないものであつ
た。また250℃に加熱して得られたプレスフイルムは透
明であり、このフイルムを用いて測定した引張り強度、
弾性率及び破断伸度は各々300kg/cm2及び7200kg/cm2及
び50％でタフネス良好なフイルムであつた。またそのガ
ラス転移温度は162℃であつた。The resin composition had a weight loss of 0.7% by weight even after being kept in air at 250 ° C. for 2 hours, and had a small amount of evaporation. The press film obtained by heating to 250 ° C. is transparent, and the tensile strength measured using this film,
The elastic modulus and elongation at break were 300 kg / cm 2 and 7200 kg / cm 2 and 50%, respectively, and the film was excellent in toughness. Its glass transition temperature was 162 ° C.
比較例１ 実施例１においてデムナムＳ−200を混合せず、その他
は実施例１と同様にして得たプレスフイルムの引張り強
度、弾性率及び破断伸度は各々359kg/cm2及び7620kg/cm
2及び4.1％であつた。Comparative Example 1 The tensile strength, elastic modulus and elongation at break of a press film obtained in the same manner as in Example 1 except that Demnum S-200 was not mixed in Example 1 were 359 kg / cm 2 and 7620 kg / cm, respectively.
2 and 4.1%.
実施例２ 実施例１において共重合体（Ｉ）と化合物〔II〕との混
合比を67重量％対33重量％とし、その他は実施例１と同
様にして樹脂組成物を得た。この樹脂組成物の屈折率は
1.3122であつた。この樹脂組成物を実施例１と同様に処
理して得たフイルムの引張り破断強度、弾性率、破断伸
度及びガラス転移温度は各々220kg/cm2、5500kg/cm2、7
0％及び103℃であつた。また、この樹脂組成物の酸素及
び窒素の透過係数は各々7.5×108cm2・cm/cm2・sec・cm
Hg及び3.0×108cm2・cm/cm2・sec・cmHgであつた。Example 2 A resin composition was obtained in the same manner as in Example 1 except that the mixing ratio of the copolymer (I) and the compound [II] in Example 1 was 67% by weight to 33% by weight. The refractive index of this resin composition is
It was 1.3122. The film obtained by treating this resin composition in the same manner as in Example 1 had tensile breaking strength, elastic modulus, breaking elongation and glass transition temperature of 220 kg / cm 2 , 5500 kg / cm 2 and 7 respectively.
0% and 103 ° C. The oxygen and nitrogen permeation coefficients of this resin composition are 7.5 × 10 8 cm 2 · cm / cm 2 · sec · cm, respectively.
Hg and 3.0 × 10 8 cm 2 · cm / cm 2 · sec · cmHg.
実施例３ パーフルオロ−2,2−ジメチル−1,3−ジオキゾール（PD
D）60モル％及びテトラフルオロエチレン（TFE）40モル
％からなる共重合体（Ｉ）を調整した。得られた共重合
体は〔η〕が0.47、数平均分子量104,000、ガラス転移
温度が145℃であつた。Example 3 Perfluoro-2,2-dimethyl-1,3-dioxazole (PD
A copolymer (I) consisting of D) 60 mol% and tetrafluoroethylene (TFE) 40 mol% was prepared. The obtained copolymer had an [η] of 0.47, a number average molecular weight of 104,000 and a glass transition temperature of 145 ° C.
この共重合体90重量部及びデムナムＳ−200〔商品名：
ダイキン工業（社）製〕10重量部を混合して高速撹拌翼
付きミキサー中で100℃に加熱しながら混合して均一な
屈折率1.3070の樹脂組成物を得た。90 parts by weight of this copolymer and Demnum S-200 [trade name:
Daikin Industries, Ltd.] 10 parts by weight were mixed and mixed while heating at 100 ° C. in a mixer equipped with a high-speed stirring blade to obtain a resin composition having a uniform refractive index of 1.3070.
この樹脂組成物は空気中250℃に２時間保持した後も重
量減少は0.7重量％であり、蒸発分は少ないものであつ
た。また210℃に加熱して得られたプレスフイルムは透
明であり、このフイルムの破断伸度は64％であつた。ま
たそのガラス転移温度は110℃であつた。The resin composition had a weight loss of 0.7% by weight even after being kept in air at 250 ° C. for 2 hours, and had a small amount of evaporation. The press film obtained by heating to 210 ° C. was transparent, and the breaking elongation of this film was 64%. Its glass transition temperature was 110 ° C.
得られた樹脂組成物を鞘材とし、芯材をポリメチルメタ
クリレートとして210℃にて芯−鞘複合溶融紡糸を行な
い芯径980μｍ、鞘厚５μｍの光フアイバを得た。得ら
れた光フアイバの伝送損失は135dB/km（650nm）であ
り、10mmφの棒に曲げ付けても鞘表面に割れがなく、芯
−鞘界面にはくりもない機械的強度にすぐれたものであ
つた。また、芯材PMMAの屈折率1.49に対し鞘材の屈折率
は1.30であり、開口数0.71（従来0.50）と大きな開口数
を有する光フアイバが得られた。The resin composition thus obtained was used as a sheath material, and the core material was made of polymethylmethacrylate, and core-sheath composite melt spinning was performed at 210 ° C. to obtain an optical fiber having a core diameter of 980 μm and a sheath thickness of 5 μm. The transmission loss of the obtained optical fiber is 135 dB / km (650 nm), and even if it is bent into a 10 mmφ rod, the sheath surface has no cracks, and the core-sheath interface has no mechanical strength. Atsuta The core material PMMA has a refractive index of 1.49, whereas the sheath material has a refractive index of 1.30, and an optical fiber having a large numerical aperture of 0.71 (conventional 0.50) was obtained.
比較例２ 実施例３においてデムナムＳ−200を混合せず、その他
は実施例３と同様にして得たプレスフイルムの破断伸度
は4.4％であつた。この樹脂組成物を鞘材とし実施例３
と同様にして光フアイバを得た。得られた光フアイバの
伝送損失は135dB/km（650nm）と良好であるものの、10m
mφの棒に曲げ付けたところ鞘表面に微少な割れが先
じ、機拡的強度に劣るものであつた。Comparative Example 2 The rupture elongation of the press film obtained in the same manner as in Example 3 except that Demnum S-200 was not mixed in Example 3 was 4.4%. Example 3 Using this resin composition as a sheath material
In the same manner as above, an optical fiber was obtained. The transmission loss of the obtained optical fiber is as good as 135 dB / km (650 nm), but it is 10 m.
When it was bent into a mφ rod, the sheath surface was inferior in machine strength due to minute cracks on the surface.
実施例４ 実施例と同様の重合法にて重合したPDD/TFE60/40モル％
なる組成の共重合体90重量部にポリ−パーフルオロイソ
プロピルエーテル 〔デユポンジヤパンリミテツド（株）製クライトツクス
143AD数平均分子量8,250〕10重量部を均一溶融混合し屈
折率1.3126の樹脂組成物を得た。この樹脂組成物を実施
例１と同様にして得たフイルムの破断伸度は68％、ガラ
ス転移温度は102℃であつた。得られた樹脂組成物を鞘
材とし、α−フルオロ1,1,1,3,3,3−ヘキサフルオロイ
ソプロピルアクリレートの単独重合体（屈折率1.36）を
芯材とし220℃にて芯−鞘複合紡糸を行ない、芯径980μ
ｍ、鞘厚10μｍの光フアイバを得た。得られた光フアイ
バの伝送損失は700dB/km（650nm）と良好であり、10mm
φの棒に曲げ付けても鞘表面に割れもなく、芯−鞘界面
にはくりもない機械的強度にすぐれたものであつた。Example 4 PDD / TFE 60/40 mol% polymerized by the same polymerization method as in Example
90 parts by weight of a copolymer having the following composition is added to poly-perfluoroisopropyl ether. [Dry Pontjapan Limited Co., Ltd. Critex
143AD number average molecular weight 8,250] 10 parts by weight were uniformly melt mixed to obtain a resin composition having a refractive index of 1.3126. A film obtained from this resin composition in the same manner as in Example 1 had a breaking elongation of 68% and a glass transition temperature of 102 ° C. The obtained resin composition is used as a sheath material, and a homopolymer of α-fluoro-1,1,1,3,3,3-hexafluoroisopropyl acrylate (refractive index 1.36) is used as a core material, and the core-sheath is obtained at 220 ° C. Composite spinning, core diameter 980μ
m and a sheath thickness of 10 μm were obtained. The transmission loss of the obtained optical fiber is as good as 700 dB / km (650 nm), 10 mm
Even if it was bent to a φ rod, the surface of the sheath did not crack, and there was no crack at the core-sheath interface, and the mechanical strength was excellent.
Claims (6)
の共重合体（Ｉ）及び パーフルオロアルキルエーテルを繰り返し単位として有
する数平均分子量1000以上の化合物（II）とからなる樹
脂組成物。1. The following repeating unit [A] A resin composition comprising a copolymer (I) containing at least 30% by weight and having a number average molecular weight of 15,000 or more and a compound (II) having a number average molecular weight of 1000 or more and having perfluoroalkyl ether as a repeating unit.
ることを特徴とする請求項第１項記載の樹脂組成物。2. The resin composition according to claim 1, wherein the resin composition has a refractive index of 1.29 to 1.34.
を作り得る樹脂組成物。3. A resin composition capable of producing a film having a breaking elongation of 20% or more.
の共重合体（Ｉ）と、パーフルオロアルキルエーテルを
繰り返し単位として有する数平均分子量1000以上の化合
物（II）とからなる樹脂組成物よりなる光フアイバ用グ
ラツデイング材。4. The next repeating unit An optical fiber comprising a resin composition comprising a copolymer (I) containing at least 30% by weight and having a number average molecular weight of 15,000 or more and a compound (II) having a number average molecular weight of 1000 or more and having perfluoroalkyl ether as a repeating unit. Grading material for.
ことを特徴とする請求項第４記載の光フアイバ用グラツ
デイング。5. The optical fiber grating according to claim 4, which is a resin composition having a refractive index of 1.29 to 1.34.
ツドが次の繰り返し単位 を少なくとも30重量％含有する数平均分子量15,000以上
の共重合体（Ｉ）と、パーフルオロアルキルエーテルを
繰り返し単位として有する数平均分子量1000以上の化合
物（II）とからなる樹脂組成物にて形成されていること
を特徴とする光フアイバ。6. A core cladding type optical fiber, wherein the cladding is a repeating unit of Formed by a resin composition comprising a copolymer (I) containing at least 30% by weight and having a number average molecular weight of 15,000 or more and a compound (II) having a perfluoroalkyl ether as a repeating unit and having a number average molecular weight of 1,000 or more. Optical fiber that is characterized by.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26619789 | 1989-10-16 | ||
| JP1-266197 | 1989-10-16 | ||
| JP2-233296 | 1990-09-05 | ||
| JP23329690 | 1990-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04189862A JPH04189862A (en) | 1992-07-08 |
| JPH07100754B2 true JPH07100754B2 (en) | 1995-11-01 |
Family
ID=26530972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2272142A Expired - Fee Related JPH07100754B2 (en) | 1989-10-16 | 1990-10-12 | Fluorine resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07100754B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3264731B2 (en) * | 1993-05-11 | 2002-03-11 | 旭硝子株式会社 | Water- and oil-repellent composition and article coated therewith |
| JP3719734B2 (en) * | 1995-04-28 | 2005-11-24 | 康博 小池 | Plastic optical fiber cord and bundle fiber |
| JPH11236511A (en) * | 1997-11-17 | 1999-08-31 | Samsung Electronics Co Ltd | Optical polymer composition |
| US11107961B2 (en) * | 2017-11-02 | 2021-08-31 | Soko Kagaku Co., Ltd. | Ultraviolet light-emitting device, method for manufacturing ultraviolet light-emitting device and method for manufacturing ultraviolet light-emitting module |
-
1990
- 1990-10-12 JP JP2272142A patent/JPH07100754B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04189862A (en) | 1992-07-08 |
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