JPH04178497A - Lubricating composition - Google Patents

Lubricating composition

Info

Publication number
JPH04178497A
JPH04178497A JP30452590A JP30452590A JPH04178497A JP H04178497 A JPH04178497 A JP H04178497A JP 30452590 A JP30452590 A JP 30452590A JP 30452590 A JP30452590 A JP 30452590A JP H04178497 A JPH04178497 A JP H04178497A
Authority
JP
Japan
Prior art keywords
resin
talc
fluororesin
manufactured
tetrafluoroethylene
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.)
Granted
Application number
JP30452590A
Other languages
Japanese (ja)
Other versions
JP3009210B2 (en
Inventor
Masaki Egami
正樹 江上
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.)
NTN Engineering Plastics Corp
Original Assignee
NTN Engineering Plastics Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=17934067&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPH04178497(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by NTN Engineering Plastics Corp filed Critical NTN Engineering Plastics Corp
Priority to JP30452590A priority Critical patent/JP3009210B2/en
Publication of JPH04178497A publication Critical patent/JPH04178497A/en
Application granted granted Critical
Publication of JP3009210B2 publication Critical patent/JP3009210B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Lubricants (AREA)

Abstract

PURPOSE:To provide a lubricating composition having excellent abrasion resistance even to soft materials such as Al alloys and good heat resistance by adding a fluororesin and talc as essential components to polyphenylene sulfide resin in specific amounts, respectively. CONSTITUTION:The objective composition comprises (A) polyphenylene resin especially preferably represented by the formula, (B) 5-40wt.% of a fluororesin especially preferably comprising tetrafluoroethylene resin, and (C) 5-30wt.% of talc preferably having an average particle diameter of 0.1-100mum (preferably 0.5-60mum) as essential components.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は各種の摺動部材料として利用されるポリフェ
ニレンサルファイド樹脂を主成分とする潤滑性組成物に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a lubricating composition containing polyphenylene sulfide resin as a main component and used as a material for various sliding parts.

〔従来の技術〕[Conventional technology]

近年、合成樹脂滑り軸受の用途分野が拡大するにつれて
、軸受の使用条件、特に高温雰囲気下において、良好な
摩擦摩耗特性を発揮するような耐熱性のある合成樹脂製
軸受が強く要望されるようになってきた。
In recent years, as the field of application for synthetic resin plain bearings has expanded, there has been a strong demand for heat-resistant synthetic resin bearings that exhibit good friction and wear characteristics under the conditions in which the bearings are used, especially in high-temperature environments. It has become.

また、軸受の相手材としても安価なアルミニウム合金A
3056等が使用されており、使用中に相手材を傷つけ
ないような軸受の特性が要求されている。
In addition, aluminum alloy A is inexpensive as a mating material for bearings.
3056 etc. are used, and the bearing is required to have characteristics that will not damage the mating material during use.

従来、耐熱性が良く機械的強度の優れた熱可塑性合成樹
脂としてポリフェニレンサルファイド(PPSと略称す
る)樹脂が用いられていることはよく知られている。し
かし、このPPS樹脂は自己潤滑性が乏しいため、潤滑
性を必要とする部分の材料として使用するに際しては、
潤滑剤などを添加して別途潤滑性を付与しなければなら
ない。
It is well known that polyphenylene sulfide (abbreviated as PPS) resin has been used as a thermoplastic synthetic resin with good heat resistance and mechanical strength. However, this PPS resin has poor self-lubricating properties, so when using it as a material for parts that require lubricity,
Lubricating properties must be provided separately by adding a lubricant or the like.

そこで、このようなPPS樹脂に、たとえば黒鉛、四フ
ッ化エチレン樹脂、潤滑油、金属酸化物、芳香族ポリア
ミド樹脂等を添加した複合材料が開発されている。しか
し、このような複合材料は高温、高負荷条件のもとて良
好な摩擦摩耗特性を発揮させるという点で決して充分で
あるとは言えない。
Therefore, composite materials have been developed in which graphite, tetrafluoroethylene resin, lubricating oil, metal oxides, aromatic polyamide resins, and the like are added to such PPS resins. However, such composite materials cannot be said to be sufficient in terms of exhibiting very good friction and wear characteristics under high temperature and high load conditions.

また、PPS樹脂に四フッ化エチレン樹脂およびPPS
樹脂より耐熱性のある合成樹脂粉末を添加した複合材料
も開発されているが、相手材が硬質の材料である場合、
良好な摩擦摩耗特性を発揮するものの、相手材がアルミ
ニウム合金の場合は相手材を傷つけてしまう。一方、炭
素繊維を配合した複合材料は初期においては良好な摩擦
摩耗特性を示すが、相手材が硬質でも相手材を損傷させ
、その損傷にともない摩擦摩耗特性が急激に悪化する。
In addition, PPS resin and tetrafluoroethylene resin and PPS
Composite materials containing synthetic resin powder, which is more heat resistant than resin, have also been developed, but if the other material is a hard material,
Although it exhibits good friction and wear characteristics, if the mating material is an aluminum alloy, it will damage the mating material. On the other hand, a composite material containing carbon fibers exhibits good friction and wear characteristics in the initial stage, but even if the mating material is hard, it damages the mating material, and as the material is damaged, the friction and wear characteristics rapidly deteriorate.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

このように、従来の技術においては良好な潤滑特性を備
えた耐熱性材料がなく世間の要望に対処し得ないという
問題点があり、これを解決することが課題となっていた
As described above, the conventional technology has the problem that it cannot meet the demands of the public because there is no heat-resistant material with good lubrication properties, and it has been an issue to solve this problem.

(課題を解決するための手段〕 上記の課題を解決するために、この発明は、PPS樹脂
にフッ素樹脂5〜40重量%と、タルク5〜30重量%
とを必須成分として添加した潤滑性組成物とする手段を
採用したものである。以下その詳細を述べる。
(Means for Solving the Problems) In order to solve the above problems, the present invention includes PPS resin containing 5 to 40% by weight of fluororesin and 5 to 30% by weight of talc.
This method employs a method of creating a lubricating composition in which the following are added as essential components. The details will be described below.

まず、この発明におけるPPS樹脂は、−C式%式% で示される合成樹脂である。ここで、式中−ph−であ
り、QはF、CI、BrのハロゲンもしくはCI+3で
あり、mは1〜4の整数を示す。これらのうち、で示さ
れるものであり、米国フィリップス・ベトローリアム社
から「ライドン」の商標で市販され、その製造方法は米
国特許第3.354,129号(対応特許特公昭45−
3368号)に開示されている。それによると、ライド
ンはN−メチルピロリドン溶媒中、160〜250°C
1加圧条件下にp〜ジクロルヘンゼンと二硫化ソーダと
を反応させることによって製造され、樹脂中に交差結合
が全くないものから部分的交差結合を有するものに至る
まで各種重合度のものを後熱処理工程にかけて自由に製
造することができるので、目的の溶媒ブレンドに適正な
溶融粘度特性を有するものを任意に選択使用することが
可能である。また、架橋構造をとらず直鎖状のものも使
用できる。
First, the PPS resin in this invention is a synthetic resin represented by the formula -C. Here, in the formula, -ph-, Q is a halogen of F, CI, Br, or CI+3, and m represents an integer of 1 to 4. Among these, it is commercially available from Philips Vetroleum Company of the United States under the trademark "Rydon", and its manufacturing method is described in U.S. Patent No. 3,354,129 (corresponding patent No.
No. 3368). According to it, Rydon is heated at 160-250°C in N-methylpyrrolidone solvent.
1 Manufactured by reacting p~dichlorohenzene with sodium disulfide under pressurized conditions, and post-heat treatment of resins with various degrees of polymerization, ranging from those with no cross-linking to those with partial cross-linking. Since it can be manufactured freely through various processes, it is possible to arbitrarily select and use a solvent having appropriate melt viscosity characteristics for the desired solvent blend. Moreover, a linear one without a crosslinked structure can also be used.

また、この発明におけるフッ素樹脂は四フフ化エチレン
樹脂、エチレン−テトラフルオロエチレン共重合体、テ
トラフルオロエチレン−パーフルオロアルキルビニルエ
ーテル共重合体、テトラフルオロエチレン−ヘキサフル
オロプロピレン共重合体、ポリトリクロロフルオロエチ
レン等があげられるが、特に四フッ化エチレン樹脂が好
ましい。
In addition, the fluororesin in this invention includes tetrafluoroethylene resin, ethylene-tetrafluoroethylene copolymer, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, polytrichlorofluoroethylene Among them, tetrafluoroethylene resin is particularly preferred.

そして、四フッ化エチレン樹脂は、四フッ化エチレンの
重合体であり、成形用の粉末であっても、また、いわゆ
る固体潤滑剤用の微粉末であってもよく、たとえば三片
デュポン・フロロケミカル社製:テフロン7J、 T1
.P−10、旭硝子社製:フルオンG163、ダイキン
工業社製:ポリフロンM15、ルブロンし5などを例示
することができる。
Tetrafluoroethylene resin is a polymer of tetrafluoroethylene, and may be a powder for molding or a fine powder for so-called solid lubricants, such as Mikata DuPont Fluoroethylene. Manufactured by Chemical Company: Teflon 7J, T1
.. P-10, Fluon G163 (manufactured by Asahi Glass Co., Ltd.), Polyflon M15 (manufactured by Daikin Industries, Ltd.), LeBlon Shi 5, etc. can be exemplified.

また、この発明におけるタルクは、マグネシウムの含水
ケイ酸塩であって、粉末状、鱗片状、繊維状のものが好
ましい。また、これらの粒径は0.1〜100 pva
、好ましくは0.5〜60μmのものである。
Moreover, the talc in this invention is a hydrous silicate of magnesium, and is preferably in the form of powder, scale, or fiber. In addition, these particle sizes range from 0.1 to 100 pva
, preferably 0.5 to 60 μm.

なお、この発明において、フッ素樹脂の量を5〜40重
世%に限定する理由は5重量%より少ないと潤滑特性が
悪く、40重量%をこえると著しく成形性がそこなわれ
るからである。また、タルクの量を5〜30重量%に限
定する理由は、この範囲外では潤滑特性が悪く、30重
量%を越えると極端にもろくなるからである。
In this invention, the reason why the amount of fluororesin is limited to 5 to 40% by weight is that if it is less than 5% by weight, the lubricating properties will be poor, and if it exceeds 40% by weight, the moldability will be significantly impaired. Further, the reason why the amount of talc is limited to 5 to 30% by weight is that outside this range, the lubricating properties are poor, and if it exceeds 30% by weight, it becomes extremely brittle.

ここで、配合割合の決まった各添加物を混合する方法は
特に限定するものではなく、通常広く用いられている方
法、たとえば主成分となる樹脂、その他の諸原料をそれ
ぞれ個別に、またはヘンシェルミキサー、ボールミル、
タンブラ−ミキサー等の混合機によって適宜乾式混合し
た後、溶融混合性のよい射出成形機もしくは溶融押出成
形機に供給するか、または、予め熱ロール、ニーダ、バ
ンバリーミキサ−1熔融押出機などで溶融混合するなど
の方法を利用すればよい、さらに、この発明の組成物を
成形するにあたっても、特にその方法を限定するもので
はな(、圧縮成形、押出成形、射出成形等の通常の方法
、または組成物を溶融混合した後、これをジェットミル
、冷凍粉砕機等によって粉砕し、所望の粒径に分級する
か、または分級しないままで、得られた粉末を用いた流
動浸漬塗装、静電粉体塗装などを行なうことも可能であ
る。また、得られた粉末を溶剤に分散させて、スプレー
塗装または浸漬塗装を行なうことも可能である。
Here, the method of mixing each additive with a fixed blending ratio is not particularly limited, and any commonly used method may be used, such as mixing the main component resin and other raw materials individually, or using a Henschel mixer. , ball mill,
After dry mixing as appropriate using a mixer such as a tumbler mixer, the mixture is supplied to an injection molding machine or melt extrusion molding machine with good melt mixing properties, or it is melted in advance using a heated roll, kneader, Banbury mixer 1 melt extruder, etc. Furthermore, the method for molding the composition of the present invention is not particularly limited (eg, ordinary methods such as compression molding, extrusion molding, injection molding, or After melt-mixing the composition, it is pulverized using a jet mill, frozen pulverizer, etc., and classified to a desired particle size, or the resulting powder is used for fluidized dip coating, electrostatic powder coating, etc. It is also possible to perform body painting etc. It is also possible to disperse the obtained powder in a solvent and perform spray painting or dip painting.

なお、この発明のPPS樹脂を主成分とする潤滑性組成
物に対して、潤滑特性を悪化させない範囲内において各
種添加剤を配合することもできる。
Note that various additives may be added to the lubricating composition containing the PPS resin of the present invention as a main component within a range that does not deteriorate the lubricating properties.

またその他に、潤滑性をさらに改良するために、各種耐
摩耗性改良剤を配合してもよい。そのような耐摩耗性改
良剤の好ましい例としては、芳香族ポリアミド繊維、グ
ラファイト、芳香族ポリエステル樹脂等を例示できるが
、これらに限定されるものではない。
In addition, various wear resistance improvers may be added to further improve the lubricity. Preferred examples of such wear resistance improvers include, but are not limited to, aromatic polyamide fibers, graphite, and aromatic polyester resins.

〔作用〕[Effect]

以上述べたこの発明の組成物は、必須成分としてフッ素
樹脂、タルクを併用することによって、高温雰囲気中で
も良好な転移膜を相手材上に形成し、相手材がアルミニ
ウム合金でも傷つけることなく、良好な潤滑特性を示す
By using a fluororesin and talc together as essential components, the composition of the present invention described above forms a good transfer film on the mating material even in a high temperature atmosphere, and can form a good transfer film on the mating material without damaging it even if the mating material is an aluminum alloy. Shows lubricating properties.

〔実施例〕〔Example〕

まず、実施例および比較例に用いた諸原材料を一括して
示すとつぎのとおりである。なお各成分の配合割合は、
すべて重量%である。
First, the raw materials used in the Examples and Comparative Examples are listed below. The blending ratio of each ingredient is
All percentages are by weight.

■ PPS樹脂(東ソーサスティール社製:PPS#■
 PPS樹脂(クレハ化学社製: KPS−W2O3)
■ タルクA(松材産業社製:クラウン・タルクPP、
 M片状) ■ タルクB(富士タルク工業社製:タルクRF−8゜
繊維状) ■ 四フフ化エチレン樹脂A(三片デュポン・フロロケ
ミカル社製:テフロン7J) ■ 四フッ化エチレン樹脂B(喜多村社製:KT300
M、焼成粉) ■ 芳香族ポリエステル樹脂(住人化学工業社製:エコ
ノールEIOIM ) ■ カーボンブランク(ライオン社製:ケソチェンEC
−X) ■ グラファイト(日本黒鉛社製: ACP)実施例1
〜4: 第1表に示す割合で諸原材料を配合した。そして組成物
の成形にあたっては、まず原材料をヘンシェルミキサー
で充分混合し、二軸溶融押出機に供給し、シリンダー温
度300°C2回転数毎分100回転の溶融混合条件で
押出して造粒し、得られたペレットを樹脂温度310°
C1射出圧力800kg/cd、金型温度140℃の射
出成形条件下で外径35刷、内径25mm、幅6閣のリ
ング状試験片を成形し、この試験片を用いて以下に示す
高温ラジアル摩擦摩耗試験を行なった。
■ PPS resin (manufactured by Tososa Steel Co., Ltd.: PPS#■
PPS resin (manufactured by Kureha Chemical Co., Ltd.: KPS-W2O3)
■ Talc A (Matsuzai Sangyo Co., Ltd.: Crown Talc PP,
M flakes) ■ Talc B (manufactured by Fuji Talc Industries Co., Ltd.: Talc RF-8° fibrous) ■ Tetrafluoroethylene resin A (manufactured by Mikata DuPont Fluorochemical Co., Ltd.: Teflon 7J) ■ Tetrafluoroethylene resin B ( Manufactured by Kitamurasha: KT300
M, fired powder) ■ Aromatic polyester resin (manufactured by Sumima Kagaku Kogyo Co., Ltd.: ECONOL EIOIM) ■ Carbon blank (manufactured by Lion Corporation: Kesochen EC)
-X) ■ Graphite (manufactured by Nippon Graphite Co., Ltd.: ACP) Example 1
~4: Raw materials were blended in the proportions shown in Table 1. To mold the composition, first, the raw materials are thoroughly mixed in a Henschel mixer, then fed to a twin-screw melt extruder, and extruded and granulated at a cylinder temperature of 300°C and a rotation speed of 100 revolutions per minute. The pellets were heated to a resin temperature of 310°.
A ring-shaped test piece with an outer diameter of 35 mm, an inner diameter of 25 mm, and a width of 6 mm was molded under injection molding conditions of a C1 injection pressure of 800 kg/cd and a mold temperature of 140°C, and this test piece was used to perform the high-temperature radial friction shown below. A wear test was conducted.

高温ラジアル摩擦摩耗試験: 密閉された200°Cの雰囲気下で駆動される回転軸に
、同軸外周にアルミニウム合金(A5056)製筒形の
相手材を嵌め、この相手材の外周に回転自在第1表 第2表 に嵌めたリング状試験片を相手材周面に対して2.7k
g f / cTAの圧力で押圧し、前記回転軸には、
トルクメークを取り付け、周速が3m/分であるよう1
68時間連続回転した後、試験片の摩耗量(Ilg)、
回転軸のトルク(kgf−cm)を測定し、かつ相手材
の損傷度を観察した。損傷度については、損傷しない(
○印)、やや損傷する(Δ印)または損傷する(×印)
の三段階評価で表わした。得られた結果は第2表にまと
めた。
High-temperature radial friction and wear test: A cylindrical mating material made of aluminum alloy (A5056) is fitted around the outer circumference of a rotating shaft driven in a sealed 200°C atmosphere, and a rotatable first rotary shaft is fitted around the outer circumference of the coaxial shaft. The ring-shaped test piece fitted in Table 2 is 2.7k against the surrounding surface of the mating material.
Press with a pressure of g f / cTA, and the rotating shaft has a
Attach the torque make and set the circumferential speed to 3 m/min.
After continuous rotation for 68 hours, the wear amount (Ilg) of the test piece,
The torque (kgf-cm) of the rotating shaft was measured, and the degree of damage to the mating material was observed. Regarding the degree of damage, no damage (
○ mark), slightly damaged (Δ mark), or damaged (x mark)
It was expressed as a three-level evaluation. The results obtained are summarized in Table 2.

比較例1〜5; 第1表に示した割合で原材料を配合したこと以外は実施
例1と全く同様にして試験片を作り、緒特性を求め、得
られた結果を第2表に併記した。
Comparative Examples 1 to 5: Test pieces were prepared in the same manner as in Example 1 except that the raw materials were mixed in the proportions shown in Table 1, and the properties of the test pieces were determined. The obtained results are also listed in Table 2. .

第2表に示す結果から、比較例1〜5においては、いず
れも摩耗量、回転トルクが大きく、また、比較例1.2
および5では相手材の損傷が大きかった。一方、実施例
1〜4では、摩耗量、回転トルクとも小さく、しかも相
手材のアルミニウム合金を損傷させないことが明らかに
なった。
From the results shown in Table 2, in Comparative Examples 1 to 5, the amount of wear and rotational torque were large, and Comparative Examples 1 and 2
In cases 5 and 5, the damage to the mating material was large. On the other hand, in Examples 1 to 4, both the amount of wear and rotational torque were small, and it was revealed that the aluminum alloy of the mating material was not damaged.

[効果] 以上述べたように、この発明の組成物から得られる成形
体はアルミニウム合金等の軟質材相手でも看れた耐摩耗
性を有しており、しかも相手材を損傷しないので、相手
材を選ばず、軸受材として使用できる。また、PPS樹
脂の耐熱性を利用しているので、高温条件下、軟質材相
手で耐摩耗性を要求される用途には格好のものであると
いえる。
[Effects] As described above, the molded product obtained from the composition of the present invention has wear resistance that can be observed even when mating with soft materials such as aluminum alloys, and does not damage the mating material. It can be used as a bearing material regardless of the material. Furthermore, since it utilizes the heat resistance of PPS resin, it can be said to be ideal for applications that require wear resistance when working with soft materials under high temperature conditions.

また、この発明の組成物は射出成形を行ない得て成形も
容易であることから、この発明の意義はきわめて大きい
ということができる。
Furthermore, since the composition of the present invention can be easily injection molded and molded, it can be said that the present invention is extremely significant.

Claims (1)

【特許請求の範囲】[Claims] (1)ポリフェニレンサルファイド樹脂に、フッ素樹脂
5〜40重量%とタルク5〜30重量%とを必須成分と
して添加したことを特徴とする潤滑性組成物。
(1) A lubricating composition characterized in that 5 to 40% by weight of a fluororesin and 5 to 30% by weight of talc are added as essential components to a polyphenylene sulfide resin.
JP30452590A 1990-11-09 1990-11-09 Lubricating composition Expired - Lifetime JP3009210B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30452590A JP3009210B2 (en) 1990-11-09 1990-11-09 Lubricating composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30452590A JP3009210B2 (en) 1990-11-09 1990-11-09 Lubricating composition

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP16648699A Division JP3126352B2 (en) 1999-06-14 1999-06-14 Plain bearing

Publications (2)

Publication Number Publication Date
JPH04178497A true JPH04178497A (en) 1992-06-25
JP3009210B2 JP3009210B2 (en) 2000-02-14

Family

ID=17934067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30452590A Expired - Lifetime JP3009210B2 (en) 1990-11-09 1990-11-09 Lubricating composition

Country Status (1)

Country Link
JP (1) JP3009210B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5990225A (en) * 1995-05-17 1999-11-23 Mitsubishi Chemical Corporation Resin of polyphenylene sulfide, polyethylene graft and TFE for sliding member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5990225A (en) * 1995-05-17 1999-11-23 Mitsubishi Chemical Corporation Resin of polyphenylene sulfide, polyethylene graft and TFE for sliding member

Also Published As

Publication number Publication date
JP3009210B2 (en) 2000-02-14

Similar Documents

Publication Publication Date Title
US5886080A (en) Resin composition
JP3618398B2 (en) Heat-resistant / lubricating resin composition
JPH09177765A (en) Heat resistant sliding bearing for fixing device
JPH04178497A (en) Lubricating composition
JP3901229B2 (en) Heat-resistant / lubricating resin composition
US5618873A (en) Sliding member
JP3501890B2 (en) Heat-resistant and lubricating resin composition
JP3126352B2 (en) Plain bearing
JP2995024B2 (en) Manufacturing method of synthetic resin sliding bearings
JP2804294B2 (en) Lubricating resin composition for plain bearings
JP3576235B2 (en) Heat-resistant and lubricating resin composition
JPH07179846A (en) Oil seal ring
JP3580837B2 (en) Heat-resistant and conductive sliding bearings
JPH0561306B2 (en)
JP2837458B2 (en) Lubricating resin composition for sliding members
JP3978841B2 (en) Conductive sliding member composition
JPH0160509B2 (en)
JPH03137195A (en) Lubricative composition
JPH0354297A (en) Lubricating composition
JPH0747691B2 (en) Polyimide-based friction material and manufacturing method thereof
JP3184840B2 (en) Heat resistant plain bearings
JP2942546B2 (en) Method for producing molded article comprising lubricating resin composition
JPH09151313A (en) Heat-resistant and lubricating resin composition
JPH1129782A (en) Sliding bearing
JPH06212080A (en) Lubricating resin composition

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071203

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081203

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081203

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091203

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101203

Year of fee payment: 11

EXPY Cancellation because of completion of term