JP2844099B2 - Waterproof optical fiber cable - Google Patents
Waterproof optical fiber cableInfo
- Publication number
- JP2844099B2 JP2844099B2 JP1337848A JP33784889A JP2844099B2 JP 2844099 B2 JP2844099 B2 JP 2844099B2 JP 1337848 A JP1337848 A JP 1337848A JP 33784889 A JP33784889 A JP 33784889A JP 2844099 B2 JP2844099 B2 JP 2844099B2
- Authority
- JP
- Japan
- Prior art keywords
- consistency
- optical fiber
- compound
- filler
- cable
- 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
- 239000013307 optical fiber Substances 0.000 title claims description 20
- 239000004202 carbamide Substances 0.000 claims description 27
- -1 urea compound Chemical class 0.000 claims description 23
- 150000001875 compounds Chemical class 0.000 claims description 16
- 229920001083 polybutene Polymers 0.000 claims description 13
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 10
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 10
- 238000004078 waterproofing Methods 0.000 claims description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 150000003672 ureas Chemical class 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 30
- 239000000945 filler Substances 0.000 description 22
- 238000000926 separation method Methods 0.000 description 22
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 14
- 238000002156 mixing Methods 0.000 description 14
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 7
- 239000004519 grease Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920002396 Polyurea Polymers 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229940126062 Compound A Drugs 0.000 description 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は防水型光ファイバーケーブルに関するもので
ある。The present invention relates to a waterproof optical fiber cable.
［従来の技術および発明が解決しようとする課題］ 防水型光ファイバーケーブルは、 （イ）光ファイバー間および光ファイバーユニット間に
潤滑性や緩衝性を与え、かつ光ファイバーケーブルに可
撓性を付与すること、および （ロ）外部からの水の進入を防ぎ、水分による光ファイ
バーの機械的強度の低下や光伝導損失の増大を抑えるこ
と などの目的で、ケーブル内、例えばケーブル内の光ファ
イバー間およびこれを束ねたユニット間の空所に防水コ
ンパウンド（以下単に「充填剤」ということがある）が
充填される。[Problems to be Solved by the Prior Art and the Invention] The waterproof type optical fiber cable is (a) to provide lubricity and cushioning between optical fibers and between optical fiber units, and to impart flexibility to the optical fiber cable; (B) For the purpose of preventing water from entering from outside and suppressing the decrease in optical fiber mechanical strength and the increase in photoconductive loss due to moisture, etc., in a cable, for example, between optical fibers in a cable and a unit that bundles them The intervening space is filled with a waterproofing compound (hereinafter sometimes simply referred to as “filler”).
充填剤としては、一般に適度の硬さの油性物質が使用
され、ケーブル内に容易に充電できる軟らかさとケーブ
ルの外皮に孔が明いても流出しない重さをもつ必要があ
る。またケーブル付設後は、−40〜＋80℃の温度環境に
晒されるため、低温で固化しないことや、広い温度範囲
において体積変化が少ないことも必要である。また、低
温で固化せずとも、充填剤の体積収縮が起こると、光フ
ァイバーに単周期の曲げを与え、伝送損失の増加を招い
たり、水の進入を許す空隙を生じたりする懸念がある。As the filler, an oily substance having a moderate hardness is generally used, and it is necessary that the filler has a softness that can be easily charged into the cable and a weight that does not flow out even if a hole is formed in the outer sheath of the cable. After the cable is attached, it is exposed to a temperature environment of -40 to + 80 ° C, so that it is necessary that the cable does not solidify at a low temperature and that the volume change is small in a wide temperature range. Further, even if the filler does not solidify at a low temperature, if the volume shrinkage of the filler occurs, the optical fiber may be bent in a single cycle, causing an increase in transmission loss or a gap that allows water to enter.
さらに、ケーブルの付設あるいは改修時におけるケー
ブル末端加工作業の際、油がべとついたり分離した油が
流れ出たりしないように、充填剤としては適当な稠度を
有し、かつ離油度が小さいことも必要である。離油度の
問題は末端加工時のみの問題でなく、ケーブル付設後
も、油が分離すると外皮の傷から油が容易に流出し、浸
水の原因となる空隙を生じたり、伝送損失の増加を招く
基になる。In addition, it should have appropriate consistency as the filler and have a low oil release so that the oil does not stick and the separated oil does not flow out during cable termination work at the time of attaching or modifying the cable. Is also necessary. The problem of oil separation is not only a problem at the end processing, but even after the cable is attached, if the oil separates, the oil easily leaks from the scratches on the outer skin, causing voids that cause water infiltration and increases transmission loss. Become a group to invite.
また、充填剤は充填時に細いケーブル内を通過する間
に剪断応力、ずれ応力など各種の力を受ける。さらに、
ケーブル付設時あるいは付設後も、ケーブルの曲げ変化
に伴ない同様な力を受ける。従って、充填剤はこのよう
な力を受ける前後においても稠度が変化しないこと、す
なわち混和稠度と不混和稠度の差が小さいことも重要で
ある。In addition, the filler receives various forces such as shear stress and shear stress while passing through the thin cable at the time of filling. further,
When the cable is attached or after the cable is attached, the same force is applied as the cable is bent. Therefore, it is also important that the filler does not change its consistency before and after receiving such a force, that is, that the difference between the miscible consistency and the immiscible consistency is small.
従来開示された技術としては特開昭56−43610号、特
開昭58−79202号、特開昭60−39609号、特開昭60−3961
0号、特開昭60−49308号、特開昭60−185914号あるいは
米国特許第4,711,523号等に記載されたものがある。こ
れらの中で特開昭60−49308号は40℃における粘度が10
〜50000センチストークスである有機液体に特定の構造
を持つポリウレア化合物を１〜30％含有するコンパウン
ドを充填剤とすることを推奨している。このコンパウン
ドの誘電特性は従来の炭化水素ロウと同じであり、しか
も滴点が高く、常温における稠度が大きく、かつ熱膨張
係数が従来品の半分以下である等の優れた特性を有して
いるが、離油度が1.7〜3.8％で大きいという欠点があ
る。また、稠度が250〜320と大きいことが特徴のひとつ
ではあるが、このよなコンパウンドは外力を受けた場合
に稠度が変化し易い。しかし、外力を受けた後でも同じ
稠度であることが重要である。すなわち、混和稠度と不
混和稠度との差が小さいことが望ましいが、この問題に
関しては何等配慮がなれていない。Conventionally disclosed techniques include JP-A-56-43610, JP-A-58-79202, JP-A-60-39609, and JP-A-60-3961.
No. 0, JP-A-60-49308, JP-A-60-185914 or U.S. Pat. No. 4,711,523. Among these, JP-A-60-49308 discloses that the viscosity at 40 ° C. is 10%.
It is recommended that a compound containing 1 to 30% of a polyurea compound having a specific structure in an organic liquid of 550,000 centistokes be used as the filler. The dielectric properties of this compound are the same as those of conventional hydrocarbon waxes, and have excellent properties such as a high dropping point, a large consistency at room temperature, and a coefficient of thermal expansion less than half that of conventional products. However, there is a disadvantage that the degree of oil separation is large at 1.7 to 3.8%. One of the characteristics is that the consistency is as large as 250 to 320. However, such a compound tends to change its consistency when subjected to an external force. However, it is important that the consistency be the same even after receiving an external force. That is, it is desirable that the difference between the admixed consistency and the immiscible consistency be small, but no consideration is given to this problem.
米国特許第4,711,523号では、充填剤として常温にお
ける混和稠度が150〜450で、−30℃における値が85以上
であるグリースを用い、このようなグリースの１つして
ポリウレアグリースを挙げている。しかし、離油度も稠
度変化の問題も記載されていない。In U.S. Pat. No. 4,711,523, a grease having a miscibility of 150-450 at room temperature and a value of 85 or more at -30 DEG C. is used as a filler, and one such grease is polyurea grease. However, neither the oil separation nor the change in consistency is described.
特開昭60−39610号の充填剤は、常温における混和稠
度が85〜475であり、例としてポリウレアグリースを挙
げているが、上記の場合と同様に離油度も稠度変化の問
題も考慮されていない。The filler disclosed in JP-A-60-39610 has a miscibility at room temperature of 85 to 475, and polyurea grease is mentioned as an example.However, as in the above case, the problem of oil separation and change in consistency is also considered. Not.
このような状況下にあって、本発明者らは、低温でも
固化せず、かつ−40〜＋80℃の広い温度範囲において体
積変化が少なく、温度による稠度変化が少なく、しかも
離油度の少ない、混和稠度と不混和稠度の差が小さい充
填剤を用いた防止型光ファイバーケーブルを提供するこ
とを本発明の課題としたものである。Under such circumstances, the present inventors do not solidify even at a low temperature, and have a small volume change in a wide temperature range of −40 to + 80 ° C., a small change in consistency with temperature, and a small oil separation. SUMMARY OF THE INVENTION It is an object of the present invention to provide a prevention type optical fiber cable using a filler having a small difference between a mixed consistency and an immiscible consistency.
［課題を解決するための手段］ このような防水型光ファイバーケーブルは次のように
して得られる。すなわち、Ａ−Ｕ−Ｂ、Ａ−Ｕ−Ａ、お
よびＢ−Ｕ−Ｂの３つの尿素化合物の少なくとも１種２
〜25重量％と数平均分子量400〜1000のポリブテン98〜7
5重量％からなる防水コンパウンドを光ファイバーケー
ブル内に充填する。なお前記尿素化合物において、Ａは
シクロヘキシル基、Ｂはオクタデシル基およびＵは下記
尿素含有基を表わす。[Means for Solving the Problems] Such a waterproof optical fiber cable is obtained as follows. That is, at least one of the three urea compounds AUB, AUA, and BUB 2
Polybutene with a number average molecular weight of 400 to 1000
A 5% by weight waterproof compound is filled into the optical fiber cable. In the urea compound, A represents a cyclohexyl group, B represents an octadecyl group, and U represents the following urea-containing group.
また、前記末端基ＡおよびＢのモル比A/Bは0.25〜9.0の
範囲である。 The molar ratio A / B of the terminal groups A and B is in the range of 0.25 to 9.0.
上記の防水コンパウンドを、例えば、ケーブル内の光
ファイバーの間およびこれを束ねたユニットの間の空所
に充填する。The waterproofing compound is filled, for example, in the space between the optical fibers in the cable and between the units that bundle them.
前記充填剤に数平均分子量400〜1000のポリブテンを
配合することにより、防水コンパウンドとしたときの温
度特性、すなわち低温でも固化せず、−40〜＋80℃の広
い温度範囲においても体積変化が少なく、かつ温度によ
る稠度変化が少ないなどの特性が容易に得られる。ポリ
ブテンの代りに鉱油等を使用した場合にはこのような特
性は得られない。ポリブテンの数平均分子量が400より
小さいと、得られた防水コンパウンドの稠度が高過ぎ、
高価な尿素化合物を大量に必要とする。一方、数平均分
子量が1000より大きいと稠度が小さくなり過ぎ、稠度を
調整するために尿素化合物の量を減らすと必要な特性が
得られない。By blending the filler with polybutene having a number average molecular weight of 400 to 1000, the temperature characteristics of the waterproof compound, that is, it does not solidify even at a low temperature, and has a small volume change even in a wide temperature range of -40 to + 80 ° C, In addition, characteristics such as a small change in consistency due to temperature can be easily obtained. Such properties cannot be obtained when mineral oil or the like is used instead of polybutene. If the number average molecular weight of polybutene is less than 400, the resulting waterproofing compound has too high a consistency,
Requires large amounts of expensive urea compounds. On the other hand, if the number average molecular weight is more than 1000, the consistency becomes too small, and if the amount of the urea compound is reduced to adjust the consistency, necessary properties cannot be obtained.
本発明に用いる尿素化合物は、安定した稠度と小さい
離油度を得るために必要である。特に重要なことは、尿
素化合物の両末端に位置するシクロヘキシル基Ａとオク
タデジル基Ｂのモル比である。末端基ＡおよびＢのモル
比A/Bは0.25〜9.0であり、好ましくは0.82〜3.0の範囲
である。この比率が0.25未満であると、防水コンパウン
ドの安定性が悪く、滴点が著しく低下すると共に、離油
度が大きくなり、油が分離し易い。また、混和稠度と不
混和稠度の差が大きくなり、外力を受けたときに稠度が
変化し易い。逆にモル比が9.0を越えると、尿素化合物
の必要量が増加し、経済的に不利である。The urea compound used in the present invention is necessary for obtaining a stable consistency and a low oil separation. What is particularly important is the molar ratio between the cyclohexyl group A and the octadecyl group B located at both ends of the urea compound. The molar ratio A / B of the terminal groups A and B is from 0.25 to 9.0, preferably from 0.82 to 3.0. If this ratio is less than 0.25, the stability of the waterproofing compound is poor, the dropping point is remarkably reduced, the degree of oil separation is increased, and oil is easily separated. Further, the difference between the mixing consistency and the immiscible consistency increases, and the consistency tends to change when subjected to an external force. Conversely, if the molar ratio exceeds 9.0, the required amount of the urea compound increases, which is economically disadvantageous.
本発明の尿素化合物は一般にはジフェニルメタン−4,
4′−ジイソシアネートにシクロヘキシルアミンおよび
オクタデシルアミンを反応させて得られる。具体的に
は、シクロヘキシルアミンとオクタデシルアミンを、モ
ル比で2:8から9:1の割合に混合し、その混合物２モルに
対し１モルのジフェニルメタン−4,4′−ジイソシアネ
ートを加えて反応させる。この際、防水コンパウンドの
配合剤である平均分子量400〜1000のポリブテンを溶媒
とすることが好ましい。最初から反応後の尿素化合物が
２〜25重量％になるように前記溶媒量を定めることが特
に好ましい。The urea compound of the present invention is generally diphenylmethane-4,
It is obtained by reacting 4'-diisocyanate with cyclohexylamine and octadecylamine. Specifically, cyclohexylamine and octadecylamine are mixed at a molar ratio of 2: 8 to 9: 1, and 1 mole of diphenylmethane-4,4'-diisocyanate is added to 2 moles of the mixture and reacted. . At this time, it is preferable to use polybutene having an average molecular weight of 400 to 1000, which is a compounding agent of the waterproofing compound, as a solvent. It is particularly preferable to determine the amount of the solvent so that the amount of the urea compound after the reaction is 2 to 25% by weight from the beginning.
反応させる際には、均一な尿素化合物が生成するよう
に十分混合しなければならない。このようにして製造し
た尿素化合物の含有量は２〜25重量％が適当である。２
重量％未満であると稠度が大き過ぎ、安定性も悪く、滴
点が著しく低下すると共に、離油度が大きくなり、油が
分離し易い。また、混和稠度と不混和稠度の差も大きく
なり、外力を受けたときに稠度が変化し易い。逆に尿素
化合物の含有量が25重量％を越えると、防水コンパウン
ドが固くなり過ぎ、十分な潤滑高価を発揮することがで
きず、ケーブル内への充填も困難となり、さらに経済的
にも不利になる。During the reaction, it is necessary to mix well so that a uniform urea compound is produced. The content of the urea compound thus produced is suitably from 2 to 25% by weight. 2
If it is less than% by weight, the consistency is too high, the stability is poor, the dropping point is remarkably reduced, the degree of oil separation is increased, and the oil is easily separated. Further, the difference between the mixing consistency and the immiscible consistency also increases, and the consistency tends to change when subjected to an external force. On the other hand, if the content of the urea compound exceeds 25% by weight, the waterproofing compound becomes too hard, cannot exert sufficient lubrication cost, it is difficult to fill the cable, and it is economically disadvantageous. Become.
本発明の防水コンパウンドには、必要に応じて老化防
止剤、着色剤、あるいはその他の薬剤を適宜添加しても
よい。The waterproofing compound of the present invention may optionally contain an antioxidant, a coloring agent, or other chemicals as needed.
［発明の作用効果］ 本発明の光ファイバーケーブルに用いる充填剤、すな
わち前記のような特定の尿素化合物を２〜25重量％含有
するポリブテンからなる防水コンパウンドは、−40〜＋
80℃の温度範囲における稠度の変化が極めて小さいた
め、常温にて光ファイバーケーブルに充填することが可
能である。[Function and Effect of the Invention] The waterproofing compound comprising the filler used in the optical fiber cable of the present invention, that is, the polybutene containing 2 to 25% by weight of the above specific urea compound is -40 to +
Since the change in the consistency in the temperature range of 80 ° C. is extremely small, it is possible to fill the optical fiber cable at room temperature.
また、混和稠度と不混和稠度の差が小さいので、外力
を受けても稠度の変化が少なく、光ファイバー自体ある
いは光ファイバーユニットに対して安定した緩衝作用を
与えることができる。Further, since the difference between the admixed consistency and the immiscible consistency is small, the change in the consistency is small even when an external force is applied, and a stable buffering action can be given to the optical fiber itself or the optical fiber unit.
更に、このような充填剤を充填した防水型光ファイバ
ーケーブルは、充填剤の離油度が零であるかまたは極め
て小さいため、末端加工時に液体が流出することがない
ので、接合面を汚さず、液垂れの拭き取りが不要であ
る。また、ケーブルの外皮が損傷しても液体が流れ出な
いため、水が進入する空隙ができないなど、作業性およ
び浸水に対する安全性の面で優れている。Furthermore, the waterproof type optical fiber cable filled with such a filler has no or very small oil separation degree of the filler, so that liquid does not flow out at the time of terminal processing, so that the joining surface is not stained, No wiping of dripping is required. In addition, since the liquid does not flow out even if the outer sheath of the cable is damaged, there is no space for water to enter, so that it is excellent in workability and safety against inundation.
次に実施例を挙げて本発明をさらに詳細に説明する。 Next, the present invention will be described in more detail with reference to examples.
［実施例］ 実施例を評価するに当たり、以下の測定方法に従って
充填剤の混和稠度、不混和稠度および離油度を測定し
た。[Examples] In evaluating the examples, the mixing consistency, immiscibility and oil separation of the filler were measured according to the following measurement methods.
混和稠度:JIS−Ｋ−2220（グリース）に従い、試料を規
定の混和器で25℃に保ってから、60往復混和した直後に
測定した稠度。Mixing consistency: The consistency measured immediately after mixing and reciprocating 60 times after keeping the sample at 25 ° C with a prescribed mixer according to JIS-K-2220 (grease).
不混和稠度:JIS−Ｋ−2220−（グリース）に従い、試料
をできるだけかき混ぜないで規定の容器に採取して、25
℃で測定した稠度。Immiscible consistency: In accordance with JIS-K-2220- (grease), collect the sample in a specified container without stirring as much as possible.
Consistency measured in ° C.
離油度:JIS−Ｋ−2220（グリース）に従い、規定の金網
円錐濾過器中で80℃に保った試料から、24時間後に分離
した油の質量によって算出した。Oil separation: Calculated from the mass of oil separated after 24 hours from a sample kept at 80 ° C in a prescribed wire mesh cone filter according to JIS-K-2220 (grease).
実施例１ ジフェニルメタン−4,4′−ジイソシアネート（試
薬）8.08gを数平均分子量500のポリブテン（日石ポリブ
テンLV−100、日石石油化学（株）製）174gに加え、60
℃に加熱し均一に溶解させた。Example 1 8.08 g of diphenylmethane-4,4'-diisocyanate (reagent) was added to 174 g of polybutene having a number average molecular weight of 500 (Nisseki polybutene LV-100, manufactured by Nisseki Petrochemical Co., Ltd.), and 60
The mixture was heated to ° C. and uniformly dissolved.
これに、オクタデシルアミン（試薬）8.7gとシクロヘ
キシルアミン（試薬）3.2gとを混合加熱して溶解したも
のを加え、激しく撹拌した結果ゲル状物質を生じた。さ
らに撹拌を続けながら70℃にて30分間保持し、その後ロ
ールミルを通して目的の充填剤を得た。生成した尿素化
合物中のシクロヘキシル基Ａとオクタデシル基Ｂの比率
A/Bは1.0であり、尿素含有化合物の含有量は10重量％で
ある。A mixture of 8.7 g of octadecylamine (reagent) and 3.2 g of cyclohexylamine (reagent) dissolved by heating was added thereto, and the mixture was vigorously stirred to produce a gel-like substance. Further, the mixture was kept at 70 ° C. for 30 minutes while continuing stirring, and then a target filler was obtained through a roll mill. Ratio of cyclohexyl group A to octadecyl group B in the formed urea compound
A / B is 1.0, and the content of the urea-containing compound is 10% by weight.
この充填剤の混和稠度、不混和稠度および離油度は表
１に示す如く、それぞれ177、179、0.0％であり、混和
稠度と不混和稠度の差が殆どなく、離油度すなわち油の
分離も全く無い。As shown in Table 1, the admixture consistency, immiscibility consistency and oil separation of the filler were 177, 179 and 0.0%, respectively, and there was almost no difference between the admixture consistency and the immiscibility consistency. Nothing at all.
実施例２ 配合量を下記のようにして、実施例１と同様の処理を
行なった。Example 2 The same treatment as in Example 1 was performed with the following amounts.
ジフェニルメタン−4,4′−ジイソイアネート 3.7g 数平均分子量500のポリブテン 174g オクタデシルアミン 4.0g シクロヘキシルアミン 1.5g 生成した尿素化合物中のシクロヘキシル基Ａとオクタ
デシル基Ｂの比率A/Bは10であり、尿素化合物の含有量
は５重量％である。Diphenylmethane-4,4'-diisoyanate 3.7 g Polybutene with a number average molecular weight of 500 174 g Octadecylamine 4.0 g Cyclohexylamine 1.5 g The ratio A / B of cyclohexyl group A and octadecyl group B in the formed urea compound is 10, and the urea compound Is 5% by weight.
この充填剤の混和稠度、不混和稠度および離油度は表
１に示す如く、それぞれ300、305、0.0％であり、混和
稠度と不混和稠度の差が殆どなく、離油度すなわち油の
分離も全く無い。As shown in Table 1, the mixing consistency, immiscibility and oil separation of the filler were 300, 305 and 0.0%, respectively, and there was almost no difference between the mixing consistency and the immiscibility, and the oil separation, ie, oil separation. Nothing at all.
実施例３ 配合量を下記のようにして、実施例１と同様の処理を
行なった。Example 3 The same treatment as in Example 1 was performed with the following amounts.
ジフェニルメタン−4,4′−ジイソイアネート 4.8g 数平均分子量500のポリブテン 200g オクタデシルアミン 3.1g シクロヘキシルアミン 2.6g 生成した尿素化合物中のシクロヘキシル基Ａとオクタ
デシル基Ｂの比率A/Bは2.3であり尿素化合物の含有量は
５重量％である。Diphenylmethane-4,4'-diisoyanate 4.8 g Polybutene with a number average molecular weight of 500 200 g Octadecylamine 3.1 g Cyclohexylamine 2.6 g The ratio A / B of cyclohexyl group A and octadecyl group B in the formed urea compound is 2.3, and that of the urea compound is 2.3. The content is 5% by weight.
この充填剤の混和稠度、不混和稠度および離油度は表
１に示す如く、それぞれ315、316、0.0％であり、混和
稠度と不混和稠度の差が殆どなく、離油度すなわち油の
分離も全く無い。As shown in Table 1, the mixing consistency, immiscibility and oil separation of this filler were 315, 316 and 0.0%, respectively, and there was almost no difference between the mixing consistency and the immiscibility, and the oil separation, ie oil separation Nothing at all.
比較例１ 配合量を下記のようにして、実施例１と同様の処理を
行なった。Comparative Example 1 The same treatment as in Example 1 was performed with the following amounts.
ジフェニルメタン−4,4′−ジイソイアネート 3.5g 数平均分子量500のポリブテン 200g オクタデシルアミン 6.7g シクロヘキシルアミン 0.3g 生成した尿素化合物中のシクロヘキシル基Ａとオクタ
デシル基Ｂの比率A/Bは0.11であり、尿素化合物の含有
量は５重量％であり、混和稠度、不混和稠度および離油
度は表１に示す如く、それぞれ320、350、3.5％であっ
た。Diphenylmethane-4,4'-diisoyanate 3.5 g Polybutene having a number average molecular weight of 500 200 g Octadecylamine 6.7 g Cyclohexylamine 0.3 g The ratio A / B of cyclohexyl group A and octadecyl group B in the formed urea compound is 0.11, and the urea compound Was 5% by weight, and the miscibility, immiscibility and oil separation were 320, 350 and 3.5%, respectively, as shown in Table 1.
この充填剤は尿素化合物中のシクロヘキシル基Ａとオ
クタデシル基Ｂの比率A/Bが0.11と低いため、混和稠度
と不混和稠度の差が30と開き、離油度も3.5％と大きく
なった。Since the ratio A / B of the cyclohexyl group A and the octadecyl group B in the urea compound was as low as 0.11, the difference between the mixing consistency and the immiscible consistency was 30 and the oil separation was as large as 3.5%.
比較例２ 配合量を下記のようにして、実施例１と同様の処理を
行なった。Comparative Example 2 The same treatment as in Example 1 was performed with the compounding amounts described below.
ジフェニルメタン−4,4′−ジイソイアネート 7.4g 数平均分子量500のポリブテン 200g オクタデシルアミン 14.3g シクロヘキシルアミン 0.6g 生成した尿素化合物中のシクロヘキシル基Ａとオクタ
デシル基Ｂの比率A/Bは0.11であり、尿素化合物の含有
量は10重量％であり、混和稠度、不混和稠度および離油
度は表１に示す如く、それぞれ200、220、2.4％であっ
た。Diphenylmethane-4,4'-diisoyanate 7.4 g Polybutene having a number average molecular weight of 500 200 g Octadecylamine 14.3 g Cyclohexylamine 0.6 g The ratio A / B of cyclohexyl group A and octadecyl group B in the generated urea compound is 0.11, and the urea compound Was 10% by weight, and the miscibility, immiscibility and oil separation were 200, 220 and 2.4%, respectively, as shown in Table 1.
この充填剤は尿素化合物中のシクロヘキシル基Ａとオ
クタデシル基Ｂの比率A/Bが0.11と低いため、尿素化合
部の配合量を10重量％と増やしても稠度が小さくなるだ
けで混和稠度と不混和稠度の差は20と大きく開き、離油
度も2.4％と大きい。In this filler, since the ratio A / B of cyclohexyl group A and octadecyl group B in the urea compound is as low as 0.11, even if the blending amount of the urea compound is increased to 10% by weight, the consistency becomes small but the mixing consistency and the inconsistency are low. The difference in mixing consistency is as large as 20 and the oil separation is as large as 2.4%.
Claims (2)
0のポリブテン98〜75重量％からなる防水コンパウンド
を充填した防水型光ファイバーケーブル、 ただし、前記尿素化合物において、Ａはシクロヘキシル
基、Ｂはオクタデシル基、およびＵは下記尿素含有基 を表わし、末端基ＡおよびＢのモル比A/Bは0.25〜9.0の
範囲である。1. A urea compound having at least one of the following three urea compounds: AUB, AUA and BUB, 2 to 25% by weight, and a number average molecular weight of 400 to 100.
Waterproof optical fiber cable filled with a waterproofing compound consisting of 98 to 75% by weight of polybutene 0, wherein A is a cyclohexyl group, B is an octadecyl group, and U is a urea-containing group shown below. Wherein the molar ratio A / B of the terminal groups A and B is in the range of 0.25 to 9.0.
〜3.0の範囲にある請求項１記載の防水型光ファイバー
ケーブル。(2) The molar ratio A / B of the terminal groups A and B is 0.82.
2. The waterproof optical fiber cable according to claim 1, which is in a range of from 3.0 to 3.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1337848A JP2844099B2 (en) | 1989-12-26 | 1989-12-26 | Waterproof optical fiber cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1337848A JP2844099B2 (en) | 1989-12-26 | 1989-12-26 | Waterproof optical fiber cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03196104A JPH03196104A (en) | 1991-08-27 |
| JP2844099B2 true JP2844099B2 (en) | 1999-01-06 |
Family
ID=18312546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1337848A Expired - Fee Related JP2844099B2 (en) | 1989-12-26 | 1989-12-26 | Waterproof optical fiber cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2844099B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358664A (en) * | 1992-10-15 | 1994-10-25 | Caschem, Inc. | Gelled oil compositions |
| US5574257A (en) * | 1992-10-15 | 1996-11-12 | Caschem, Inc. | Telecommunications articles containing gelled oil compositions |
-
1989
- 1989-12-26 JP JP1337848A patent/JP2844099B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03196104A (en) | 1991-08-27 |
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