JPS619458A - Preparation of aromatic polyamide molding - Google Patents

Preparation of aromatic polyamide molding

Info

Publication number
JPS619458A
JPS619458A JP12923084A JP12923084A JPS619458A JP S619458 A JPS619458 A JP S619458A JP 12923084 A JP12923084 A JP 12923084A JP 12923084 A JP12923084 A JP 12923084A JP S619458 A JPS619458 A JP S619458A
Authority
JP
Japan
Prior art keywords
sulfolane
aromatic polyamide
molding
molded product
aromatic
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
JP12923084A
Other languages
Japanese (ja)
Other versions
JPH0629365B2 (en
Inventor
Toshihiro Toyoda
豊田 敏宏
Masanori Osawa
大沢 正紀
Masahiro Jinno
神野 政弘
Hiromi Nakano
博美 中野
Kazumi Mizutani
一美 水谷
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP59129230A priority Critical patent/JPH0629365B2/en
Publication of JPS619458A publication Critical patent/JPS619458A/en
Publication of JPH0629365B2 publication Critical patent/JPH0629365B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Polyamides (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:To obtain the titled molding having excellent moldability by the specified treatment of a molding made by molding with heat an aromatic polyamide together with sulfolane to remove the sulfolane. CONSTITUTION:0.1-2,000wt% refined and dewatered sulfolane and, if necessary, a stabilizer, a molding assistant, etc. are added to an aromatic polyamide which contains the repeating units of formula I [where Ar1-2 each are a bivalent group such as an aromatic or aromatic heterocyclic compound which may be substituted by a (cyclo)alkyl, an aryl, a halogen, etc.] and has a glass transition point of 150-400 deg.C and a logarithmic viscosity of 0.5 or higher, and this composition is molded with heat to give an aromatic polyamide molding. Then this molding is treated at a temperature from room temperature to 300 deg.C in an inert gas or in a liquid which is compatible with sulfolane and does not dissolve an aromatic polyamide to remove the sulfolane remaining in the molding.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は芳香族ポリアミドの成形加工方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for molding aromatic polyamide.

[従来の技術] 電気、電子産業分野に於ては製品の使用条件が多様化す
るに伴い製品の小型化、軽量化、高速化、エネルギーの
高効率利用が求められ、又産業機械、輸送機械分野に於
てもエネルギーの高騰を機に同様の課題が課せられ、こ
れ等の目的、課題を達成せんが為に芳香族ポリアミドが
優れた耐熱性と機械的特性を有している点から注目を集
め、絶縁フィルム、プリント配線基板、ベアリング。
[Conventional technology] In the electrical and electronic industries, as the usage conditions of products become more diverse, products are required to be smaller, lighter, faster, and use energy more efficiently. Similar challenges have been imposed in the field due to the rise in energy prices, and in order to achieve these goals and challenges, aromatic polyamides have attracted attention because of their excellent heat resistance and mechanical properties. Collect insulating film, printed wiring board, and bearings.

バッキング、歯車、カム、ピストンリング、布等の形態
で使われ始めている。
It is beginning to be used in the form of backings, gears, cams, piston rings, cloth, etc.

しかし芳香族ポリアミドは、その優れた耐熱性、機械的
特性の故に、すなわちガラス転移温度が高い熱可塑性樹
脂であるが故に、芳香族ポリアミド中独では溶融成形加
工が極めて困難である。
However, because aromatic polyamide has excellent heat resistance and mechanical properties, that is, because it is a thermoplastic resin with a high glass transition temperature, melt molding of aromatic polyamide is extremely difficult.

従来、芳香族ポリアミドの成形加工法として種々の工夫
がなされている。例えば、該ポリマーと親和性の良いア
ミド系溶剤を用いる加工法として(4−!j開昭49−
86442号、特開昭49−88443号、特開昭51
− lH83号、特開昭51−71348号、特開昭5
1−1221513号、特開昭51−12218?号、
特開昭53’−123455号、特開昭54−1198
8号、特開昭53−133537号、        
  )があり、又濃硫酸を溶媒とする加−r法として(
特開昭49− +312<7号、特開昭51−1836
3号。
Conventionally, various methods of molding aromatic polyamides have been devised. For example, as a processing method using an amide solvent that has good affinity with the polymer (4-!j
No. 86442, JP-A-49-88443, JP-A-51
- IH83, JP-A-51-71348, JP-A-5
No. 1-1221513, JP-A-51-12218? issue,
JP-A-53'-123455, JP-A-54-1198
No. 8, JP-A No. 53-133537,
), and as an addition method using concentrated sulfuric acid as a solvent (
Unexamined Japanese Patent Publication No. 1973- +312<7, Unexamined Japanese Patent Publication No. 51-1836
No. 3.

特開昭54−132874号等         )が
あり、該ポリマーの骨格に置換基を導入し溶媒溶解性を
増大させた方法として (特開昭5= 81854号、特開昭53−45238
号等)が知られている。
JP-A No. 54-132874, etc.), and methods of increasing solvent solubility by introducing substituents into the polymer skeleton (JP-A No. 5-81854, JP-A-53-45238).
etc.) are known.

[発明が解決しようとする問題点] これらの芳香族ポリアミドの成形加工法は、該ポリマー
の成形を容易にした反面法のような欠点をイIしている
[Problems to be Solved by the Invention] Although these methods of molding aromatic polyamides facilitate the molding of the polymers, they have the same drawbacks as the other methods.

まずアミド系溶媒を用いる方法は、該ポリマーとの親和
性が良好であるが故に成形物からの脱溶媒が極めて困難
である。次に濃硫酸を用いる方法は、アミド系溶媒と同
様の困難性に、11を酸自体のM4fl!、性、加水分
解作用が加わりアミド系溶媒以上に問題である。又ポリ
マー骨格に置換基を導入する方法は該ポリマーの特質で
ある耐薬品性をそこなう結果となっている。
First, in the method using an amide solvent, it is extremely difficult to remove the solvent from the molded product because it has good affinity with the polymer. Next, the method using concentrated sulfuric acid has the same difficulties as amide solvents, but 11 is replaced by M4fl! of the acid itself! It is more problematic than amide-based solvents due to the added properties, properties, and hydrolytic effects. Furthermore, the method of introducing substituents into the polymer skeleton results in the loss of chemical resistance, which is a characteristic of the polymer.

これらの対策として例えば特開昭57−179225号
に於ては、芳香族ポリアミドと親和性の良い溶媒の成形
物から溶媒の除去に、シリコンオイルや鉱油を用いた凝
固浴を用いなければならない。従2て、これ等の油成分
が成形物に浸入するし成形物の性能をそこなう。又特開
昭57−180837号に於ては、芳香族ポリアミドを
溶媒に溶解する溶解助剤としてアミン化合物を用いてい
る。これ等のアミン化合物は成形体に残存し成形物の性
能を悪くする。
As a countermeasure against these problems, for example, in JP-A-57-179225, a coagulation bath using silicone oil or mineral oil must be used to remove the solvent from the molded product of the solvent having good affinity with the aromatic polyamide. Therefore, these oil components penetrate into the molded product and impair the performance of the molded product. Furthermore, in JP-A-57-180837, an amine compound is used as a solubilizing agent for dissolving aromatic polyamide in a solvent. These amine compounds remain in the molded product and deteriorate the performance of the molded product.

[問題点を解決するための手段] 本発明者等は、芳香族ポリアミドの加工成形方法を検討
し、加工助剤としてスルホランを用いれば、成形加工性
が極めて良好であることを見い出〜し、本発明を完成し
た。
[Means for Solving the Problems] The present inventors investigated the processing and molding method of aromatic polyamide and found that if sulfolane was used as a processing aid, the molding processability was extremely good. and completed the present invention.

本発明は、芳香族ポリアミドをスルホランの共存下に加
熱成形することを特徴とする、芳香族ポリアミド成形物
の製造方法に関する。
The present invention relates to a method for producing an aromatic polyamide molded article, which is characterized by thermoforming an aromatic polyamide in the coexistence of sulfolane.

上記芳香族ポリアミドは、そのガラス転移温度か150
°C〜400’Cの範囲にあるもの、特に200°C〜
 350°Cの範囲にあるものがその成形性から好まし
く、対数粘度(後記する)が0.5以上であるものがそ
の耐薬品性、耐熱性、機械物性等から望ましい。
The aromatic polyamide has a glass transition temperature of 150
in the range of °C to 400'C, especially 200°C to
It is preferable that the temperature is in the range of 350°C from the viewpoint of moldability, and the one whose logarithmic viscosity (described later) is 0.5 or more is desirable from the viewpoint of chemical resistance, heat resistance, mechanical properties, etc.

本発明に使用するのに適する芳香族ポリアミドはド記一
般式(I)の繰返し単位を有するものである。
Aromatic polyamides suitable for use in the present invention are those having repeating units of general formula (I).

111シ式(I)に於てArl及びAr2は夫々下記な
、・3.味する。
111 In formula (I), Arl and Ar2 are each as follows; 3. Taste.

Arl は、芳香族化合物、複素芳香環化合物又はこれ
等の組合せからなる2価の基であり、更にこれにアルキ
ル基、シクロアルキル基、アリールノ1(、アルコキシ
基、ハロゲン原子等が置換されていてもよい。またAr
2は、^「lと同一か又は異なるArl  と同様の基
である。
Arl is a divalent group consisting of an aromatic compound, a heteroaromatic compound, or a combination thereof, and is further substituted with an alkyl group, a cycloalkyl group, an aryl group, an alkoxy group, a halogen atom, etc. Also good.Also Ar
2 is a group similar to Arl, which is the same as or different from l.

L記Ar1 及びArc、についてより具体的に説明す
ると、これ等はいずれも芳香族化合物、複素芳香環化合
物の基又はこれ等の組合せからなる2価の基である。そ
してこれ等の基の2種以上が組合わされる場合には、例
えば炭素−炭素で直接結合しているか、或はアルキレン
結合しているか、或は。
To explain Ar1 and Arc in L in more detail, each of them is a divalent group consisting of an aromatic compound, a group of a heteroaromatic compound, or a combination thereof. When two or more of these groups are combined, for example, they are directly bonded through carbon-carbon bonding, or alkylene bonded.

−N −、−N −、−5i −、−0−5i−0−1
’l      R 等を介して結合されていてもよい。
-N -, -N -, -5i -, -0-5i-0-1
'l R etc. may be bonded to each other.

(ここでRは、アルキル基、シクロアルキル基。(R is an alkyl group or a cycloalkyl group here.

アリール基である。又Rが2個結合している場合は、異
なる基であってもよい、) 本発明に使用するスルホランは、市販の一般的に入「、
出来るスルホランで十分であるが、成形物の品質を保持
する為には、公知のスルホラン精製、1人(例えばA、
 WeissbergerのOrganic 5olv
ents。
It is an aryl group. In addition, when two R's are bonded, they may be different groups.) The sulfolane used in the present invention is a commercially available commonly available
The produced sulfolane is sufficient, but in order to maintain the quality of the molded product, it is necessary to use known sulfolane purification methods (for example, A,
Weissberger's Organic 5olv
ents.

(3rd 、ed、) 参照)により精製且つ脱水した
ものを用いる方法か好ましい。又このスルホランに成形
物の性能を向上させる為の安定剤、成形助剤等をd1合
しておいてもよいし、更にはスルホランと芳香族ポリア
ミドとの混和助剤を混合しておいてもよい。
(3rd, ed.)) is preferred. In addition, stabilizers, molding aids, etc. may be added to this sulfolane to improve the performance of the molded product, or furthermore, a mixing aid for sulfolane and aromatic polyamide may be mixed therein. good.

次に本発明に於ける芳香族ポリアミドとスルホランの混
合割合は、成形目的により適宜変化させてより好適な混
合割合を採用するのであるが、一般には芳香族ポリアミ
ドの0.1重量%〜2500重量%、好ましくは1重量
%〜2000重量%が好ましい。
Next, the mixing ratio of the aromatic polyamide and sulfolane in the present invention is changed as appropriate depending on the purpose of molding and a more suitable mixing ratio is adopted, but generally it is 0.1% to 2500% by weight of the aromatic polyamide. %, preferably from 1% to 2000% by weight.

本発明の成形方法としては、従来公知の湿式或は乾式成
形方法を採用することが出来、これ等の成形方法により
得られる成形物から必要に応じてスルホランを除去回収
する。
As the molding method of the present invention, conventionally known wet or dry molding methods can be employed, and sulfolane is removed and recovered from the molded product obtained by these molding methods, if necessary.

ます、湿式成形方法に於いては、常圧に於ける沸点がl
 OO’C以1−で芳香族ポリアミドを溶解しないが、
スルホランとは相溶性のある液体を室温から300℃好
ましくは70℃〜300°Cの範囲に加熱した中に成形
物を導入し、成形物からスルホランを除去する。次に乾
式成形方法に於ては、室温から300°C好ましくは1
00 ’C!〜300℃の範囲に加熱された空気、水蒸
気、又は不活性ガス中に成形物を導入し、成形物からス
ルホランを除去する。更にいずれの方法に於ても、必要
に応し成形物に延伸操作を加えることが出来る。
In the wet molding method, the boiling point at normal pressure is
Although aromatic polyamide is not dissolved in 1- than OO'C,
The molded product is introduced into a liquid that is compatible with sulfolane and heated from room temperature to 300°C, preferably 70°C to 300°C, and the sulfolane is removed from the molded product. Next, in the dry molding method, the temperature is between room temperature and 300°C, preferably 1
00'C! The molded product is introduced into air, steam, or inert gas heated to a temperature in the range of ~300°C to remove sulfolane from the molded product. Furthermore, in either method, a stretching operation can be added to the molded product if necessary.

成形物からスルホラン除去に用いる室温から300℃好
ましくは70℃〜300℃の温度範囲に加温された液体
、又は気体は、スルホランの除去効率を増す為に温度勾
配をつける方が好ましい。
It is preferable to apply a temperature gradient to the liquid or gas heated to a temperature range from room temperature to 300°C, preferably 70°C to 300°C, used for removing sulfolane from the molded article, in order to increase the efficiency of removing sulfolane.

成形温度は、芳香族ポリアミドとスルホランの混合割合
、適用される成形方法によっても変化するが、 100
°C〜300°Cの範囲の中から好ましく選ばれる。
The molding temperature varies depending on the mixing ratio of aromatic polyamide and sulfolane and the applied molding method, but
It is preferably selected from the range of °C to 300 °C.

本発明の成形物は、主としてフィルム状物、糸状物、シ
ート状物を対象とするが、他の厚物成形物、棒状成形物
等の成形物の製造にも有効に適用出来る。
The molded product of the present invention is mainly intended for film-like products, thread-like products, and sheet-like products, but it can also be effectively applied to the production of other molded products such as thick molded products and rod-shaped products.

以ド実施例によって本発明の具体例を示す。Hereinafter, specific examples of the present invention will be illustrated by way of Examples.

尚 実施例中の主要な測定法は次の通りである。The main measurement methods used in the examples are as follows.

し C−溶液中のポリマー濃度(g/100m1)t=溶液
の流下時間(秒) to−溶液の流下時間(秒) 測定は、ウヘローデ型粘度計を用いて、85%硫酪中で
濃度Q、 Ig/IOh!で、温度30”Cで行った。
C - Polymer concentration in solution (g/100ml) t = solution flow time (seconds) to - solution flow time (seconds) , Ig/IOh! The temperature was 30"C.

引張強度二ASTM−0838,ASTM−0882引
張伸 : ASTM−De38. ASTM−0882
アイゾツト衝撃強度: ASTIII−0258(ノツ
チ無)糸の強度、伸度:インストロン社製強度試験機を
用い弔m維で測定した。
Tensile strength 2 ASTM-0838, ASTM-0882 Tensile elongation: ASTM-De38. ASTM-0882
Izot impact strength: Strength and elongation of ASTIII-0258 (no notches) yarn: Measured using a strength tester manufactured by Instron, Inc., using a straight fiber.

[実施例1] イソフタル酸、テレフタル酸の等モル混合物と、トルイ
レンジイソシアナート(8o/20)よりイ11られた
芳香族ポリアミド(ηinh = 1.7)50重量部
と、スルすラン100重量部との混合物を、 250°
CでTダイより押し出し170℃に加温された窒素カス
中でト分延伸することにより、 105に厚のフィルム
を得た。このフィルム中の残存スルホテンは2.5%で
あった。従って更に80℃の水浴中で延伸しながら、ス
ルホランを除去する操作を行った所、92匹厚のフィル
ムが得られ、その残存ヌルホラン量は0.3%になった
。得られたフィルムの引張強度は933kg/c+n2
、引張伸は23%であった。
[Example 1] An equimolar mixture of isophthalic acid and terephthalic acid, 50 parts by weight of an aromatic polyamide prepared from toluylene diisocyanate (8o/20) (ηinh = 1.7), and 100 parts by weight of sursulan the mixture with 250°
A film having a thickness of 105 mm was obtained by extruding it through a T-die and stretching it in a nitrogen slag heated to 170°C. The residual sulfotene in this film was 2.5%. Therefore, when the film was further stretched in a water bath at 80° C. to remove sulfolane, a film having a thickness of 92 fibers was obtained, and the amount of residual sulfolane was 0.3%. The tensile strength of the obtained film was 933 kg/c+n2
, the tensile elongation was 23%.

[実施例2] イソフタル酸、テレフタル酸の等モル混合物と、トルイ
レンジイソシアナート(80/20)より得られた芳香
族ポリアミド(ηinh = 2.5)50重量部と、
精製乾燥したスルホラン200重量部との混合物を、2
00’Cより押し出し220°Cに加温された窒素ガス
中で十分延伸することにより糸状物を得た。得られた糸
状物と85℃の水浴中で更に延伸することにより繊度2
.5デニール、強度2g/d、伸度15%の糸を得た。
[Example 2] 50 parts by weight of an aromatic polyamide (ηinh = 2.5) obtained from an equimolar mixture of isophthalic acid and terephthalic acid and toluylene diisocyanate (80/20),
A mixture with 200 parts by weight of purified and dried sulfolane,
A thread-like product was obtained by extruding from 00'C and sufficiently stretching in nitrogen gas heated to 220C. The obtained filament was further stretched in a water bath at 85°C to obtain a fineness of 2.
.. A yarn having a denier of 5, a strength of 2 g/d, and an elongation of 15% was obtained.

[実施例3] イソフタル酸と、トルイレンジイソシアナート(80,
、”20)より得られた芳香族ポリアミド(ηinh 
= 1.8) 100重量部と、亜リン酸トリフェニル
を31埴%含有させたスルホラン50重量部との混合物
を280°CでTダイより、260°Cに加熱された窒
素カス中に押し出して、ト■厚のシート状物をイ11た
。t−1られたシート状物を80℃の水浴中で処理する
ことにより残存スルホランが7.3%のシートかイリら
れた。イ1)られたシートの引張強度は735kg/C
ff12.引張伸は35%、アイゾツト衝撃強度は18
kgcm/cmであった。
[Example 3] Isophthalic acid and toluylene diisocyanate (80,
,”20), aromatic polyamide (ηinh
= 1.8) A mixture of 100 parts by weight and 50 parts by weight of sulfolane containing 31% triphenyl phosphite was extruded through a T-die at 280°C into nitrogen scum heated to 260°C. Then, I made a sheet-like material with a thickness of 1. By treating the t-1 sheet in a water bath at 80 DEG C., 7.3% of the remaining sulfolane was removed from the sheet. b1) The tensile strength of the sheet is 735kg/C
ff12. Tensile elongation is 35%, Izod impact strength is 18
kgcm/cm.

[実施例4] イソフタル酸とテレフタル酸の重量比がl:3である混
合物と、2.41ルイレンジイソシアナートよりイ11
られた芳香族ポリアミド(ηinh = L、5)10
0重量部と、成形助剤としてステアリン酸バリウムを5
重量%含有させた精製スルホラン10重駿部との混合物
を310℃で押し出し成形を行って成形物を得た。得ら
れた成形物の引張強度は764kg/Cff12.引張
伸は28%、アイゾツト衝撃強度は15kgCff1/
Cl11であった。
[Example 4] From a mixture of isophthalic acid and terephthalic acid in a weight ratio of 1:3 and 2.41 ylene diisocyanate, 11
aromatic polyamide (ηinh = L, 5) 10
0 parts by weight and 5 parts of barium stearate as a molding aid.
A mixture containing 10% by weight of purified sulfolane was extruded at 310° C. to obtain a molded product. The tensile strength of the obtained molded product was 764 kg/Cff12. Tensile elongation is 28%, Izod impact strength is 15kgCff1/
It was Cl11.

[実施例5] イソフタル酸ジクロライドとメタフェニレンジアミンよ
り得られた芳香族ポリアミド(ηinh −1,6) 
100重量部と、スルホラン15重量部との混合物30
0°Cで、 150℃に加熱したα−メチルナフタレン
中に押し出すことにより 1.5mm厚のシートを得た
。得られたシートの引張強度は? 24 kg/Cff
12.引張伸は31%、アイゾツト衝撃強度は16kg
cm/cmであった。
[Example 5] Aromatic polyamide obtained from isophthalic acid dichloride and metaphenylene diamine (ηinh -1,6)
A mixture of 100 parts by weight and 15 parts by weight of sulfolane 30
A 1.5 mm thick sheet was obtained by extrusion at 0°C into α-methylnaphthalene heated to 150°C. What is the tensile strength of the obtained sheet? 24 kg/Cff
12. Tensile elongation is 31%, Izotsu impact strength is 16kg
cm/cm.

[比較例1〕 特開昭57−179225号に従って試験した。[Comparative example 1] The test was conducted according to JP-A-57-179225.

イソフタル酸、テレフタル酸の等モル混合物と、トルイ
レンジイソシアナート(80/20)より得られた芳香
族ポリアミド(ηinh = 2.5)50重量部と、
N−メチル−2−ピロリドン500重量部とを混合溶解
した後、溶液を120°Cに加熱して引き続き3時間撹
拌を継続して芳香族ポリアミドドープを調製した。減圧
法によりこのドープの脱泡を行った。次いで、r・め準
備したシリコン油(商品名・信越シリコン社製シリコン
KFfl14)を130 ’Cに加熱した凝固浴中に延
伸しながら押し出し、更にトルエン洗浄を行うことによ
り糸を得た。この糸の繊度は2.2デニール、強度は2
.48/d、伸度は5%であった。
50 parts by weight of an aromatic polyamide (ηinh = 2.5) obtained from an equimolar mixture of isophthalic acid and terephthalic acid and toluylene diisocyanate (80/20);
After mixing and dissolving 500 parts by weight of N-methyl-2-pyrrolidone, the solution was heated to 120°C and stirring was continued for 3 hours to prepare an aromatic polyamide dope. This dope was defoamed by a reduced pressure method. Next, the prepared silicone oil (trade name: Silicone KFfl14, manufactured by Shin-Etsu Silicone Co., Ltd.) was extruded while being stretched into a coagulation bath heated to 130'C, and further washed with toluene to obtain a thread. The fineness of this yarn is 2.2 denier and the strength is 2.
.. 48/d, and the elongation was 5%.

[比較例2] 特開昭57−180637号に従って試験した。[Comparative example 2] Tested according to JP-A-57-180637.

イソフタル酸、テレフタル酸の笠モル混合物と、トルイ
レンジイソシアナート(80/ 20)よりIlIられ
た芳香族ポリアミド(ηinh = 2.5)50重量
部と、N−メチル−2−ピロリドン350重量部とを混
合溶解した後、n−ヘキシルアミン5重量部とエチレン
ジアミン10重量部を徐々に加えて芳香族ポリアミドト
ープを調製した。得られたドープを25℃に保ちつつ、
tめ調製しておいた一n−メチルー2−ピロリドンI 
Q trr J %、塩化カルシウム301騒%を溶解
した70°Cの水溶液凝固浴中に紡糸した。得られた糸
の繊度は2.8デニール、強度は1.5g/de、11
11度は4%であった。
A molar mixture of isophthalic acid and terephthalic acid, 50 parts by weight of an aromatic polyamide prepared by toluylene diisocyanate (80/20) (ηinh = 2.5), and 350 parts by weight of N-methyl-2-pyrrolidone. After mixing and dissolving, 5 parts by weight of n-hexylamine and 10 parts by weight of ethylenediamine were gradually added to prepare an aromatic polyamide tope. While keeping the obtained dope at 25°C,
1-n-methyl-2-pyrrolidone I previously prepared
The fibers were spun in an aqueous coagulation bath at 70°C in which Q trr J % and 301% calcium chloride were dissolved. The fineness of the obtained yarn was 2.8 denier, the strength was 1.5 g/de, 11
11 degrees was 4%.

[発明の効果] 本発明の方法によると、室温に於て芳香族ポリアミドを
殆と溶解しない溶媒であるスルポランを用いている為、
スルホランと相溶性があって芳香族ポリアミドを溶解し
ない溶媒で処理、或は不活性ガスで処理することにより
極めて容易に且つ筒中に成形物からスルホランを除去出
来、芳香族ポリアミド本来の特性を生がした成形物を得
ることが出来る。
[Effects of the Invention] According to the method of the present invention, since sulporan, which is a solvent that hardly dissolves aromatic polyamide at room temperature, is used,
By treating with a solvent that is compatible with sulfolane and does not dissolve the aromatic polyamide, or by treating with an inert gas, sulfolane can be removed from the molded product very easily and the original properties of aromatic polyamide can be maintained. A molded product can be obtained.

Claims (1)

【特許請求の範囲】 1)芳香族ポリアミドをスルホランの共存下に加熱成形
することを特徴とする芳香族ポリアミド成形物の製造方
法。 2)成形物に残存するスルホランを除く為に、成形物を
室温から300℃の温度範囲のスルホランと相溶性があ
り且つ芳香族ポリアミドと溶解しない液体中で処理する
特許請求の範囲第1項記載の方法。 3)成形物に残存するスルホランを除く為に、成形物を
室温から300℃の温度範囲の不活性気体中で処理する
特許請求の範囲第1項記載の方法。
[Scope of Claims] 1) A method for producing an aromatic polyamide molded article, which comprises thermoforming aromatic polyamide in the coexistence of sulfolane. 2) In order to remove sulfolane remaining in the molded product, the molded product is treated in a liquid that is compatible with sulfolane and does not dissolve in the aromatic polyamide in a temperature range from room temperature to 300°C. the method of. 3) The method according to claim 1, wherein the molded product is treated in an inert gas at a temperature ranging from room temperature to 300° C. in order to remove sulfolane remaining in the molded product.
JP59129230A 1984-06-25 1984-06-25 Aromatic polyamide molded article manufacturing method Expired - Lifetime JPH0629365B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59129230A JPH0629365B2 (en) 1984-06-25 1984-06-25 Aromatic polyamide molded article manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59129230A JPH0629365B2 (en) 1984-06-25 1984-06-25 Aromatic polyamide molded article manufacturing method

Publications (2)

Publication Number Publication Date
JPS619458A true JPS619458A (en) 1986-01-17
JPH0629365B2 JPH0629365B2 (en) 1994-04-20

Family

ID=15004379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59129230A Expired - Lifetime JPH0629365B2 (en) 1984-06-25 1984-06-25 Aromatic polyamide molded article manufacturing method

Country Status (1)

Country Link
JP (1) JPH0629365B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06108546A (en) * 1992-09-22 1994-04-19 Misawa Homes Co Ltd Fitting of small beam
WO2005061227A1 (en) * 2003-12-24 2005-07-07 Teijin Limited Multilayer body

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59232121A (en) * 1983-06-14 1984-12-26 Sumitomo Chem Co Ltd Production of polyamide

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59232121A (en) * 1983-06-14 1984-12-26 Sumitomo Chem Co Ltd Production of polyamide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06108546A (en) * 1992-09-22 1994-04-19 Misawa Homes Co Ltd Fitting of small beam
WO2005061227A1 (en) * 2003-12-24 2005-07-07 Teijin Limited Multilayer body
JPWO2005061227A1 (en) * 2003-12-24 2007-12-13 帝人株式会社 Laminate

Also Published As

Publication number Publication date
JPH0629365B2 (en) 1994-04-20

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