JPS57200453A - Preparation of polyimide powder - Google Patents

Preparation of polyimide powder

Info

Publication number
JPS57200453A
JPS57200453A JP8501381A JP8501381A JPS57200453A JP S57200453 A JPS57200453 A JP S57200453A JP 8501381 A JP8501381 A JP 8501381A JP 8501381 A JP8501381 A JP 8501381A JP S57200453 A JPS57200453 A JP S57200453A
Authority
JP
Japan
Prior art keywords
polyimide
aromatic
temp
precipitated
under stirring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8501381A
Other languages
Japanese (ja)
Inventor
Yoshikazu Sasaki
Hiroshi Inoue
Tadao Muramatsu
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.)
Ube Corp
Original Assignee
Ube Industries Ltd
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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP8501381A priority Critical patent/JPS57200453A/en
Publication of JPS57200453A publication Critical patent/JPS57200453A/en
Pending legal-status Critical Current

Links

Landscapes

  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

PURPOSE: To prepare, with ease and good reproducibility, polyimide powder suitable for production of polyimide moldings, by heating an amide solvent solution of an aromatic tetracarboxylic acid and an aromatic diamine to a specified temp. under stirring.
CONSTITUTION: Nearly equimolar amounts of an aromatic tetracarboxylic aicd having no acid anhydride group and an aromatic diamine are dissolved, at a temp. below 155°C, in an organic polar solvent which dissolves formed polyimide in less than 1wt%. The temp. of the resultant homogeneous solution with a low rotational viscosity is raised quickly to 165W300°C under stirring and is kept within the temp. range to form an aromatic polyimide which is then precipitated as fine particles. The reaction solution in which the polyimide has been precipitated in at least about 90% of theoretical yield may be aged at 160W300°C for 0.2W20hr to increase MW of the precipitated aromatic polyimide.
COPYRIGHT: (C)1982,JPO&Japio
JP8501381A 1981-06-04 1981-06-04 Preparation of polyimide powder Pending JPS57200453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8501381A JPS57200453A (en) 1981-06-04 1981-06-04 Preparation of polyimide powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8501381A JPS57200453A (en) 1981-06-04 1981-06-04 Preparation of polyimide powder

Publications (1)

Publication Number Publication Date
JPS57200453A true JPS57200453A (en) 1982-12-08

Family

ID=13846856

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8501381A Pending JPS57200453A (en) 1981-06-04 1981-06-04 Preparation of polyimide powder

Country Status (1)

Country Link
JP (1) JPS57200453A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028432A (en) * 1983-07-26 1985-02-13 Ube Ind Ltd Preparation of polyamic acid solution
JPS60161429A (en) * 1984-01-31 1985-08-23 Sumitomo Bakelite Co Ltd Preparation of heat-resistant resin
JPS62132960A (en) * 1985-12-06 1987-06-16 Ube Ind Ltd Polyimide resin formed body
JPS62185748A (en) * 1986-02-12 1987-08-14 Ube Ind Ltd Wear-resistant molding for use as sliding material
JPH01242622A (en) * 1988-03-24 1989-09-27 Nitto Denko Corp Polyimide powder
JPH02128665A (en) * 1988-11-07 1990-05-17 Gentaro Inoue Formation of crane-flying flat form with vegetable as raw material
JPH09169905A (en) * 1985-04-26 1997-06-30 E I Du Pont De Nemours & Co Solid particulate polyimide and its production
EP0982343A2 (en) * 1998-08-28 2000-03-01 Osaka Prefectural Government Polyamic acid and polyimide microfine particles and processes for their production
US6555647B2 (en) 2000-07-21 2003-04-29 Ube Industries, Ltd. Process for production of polyimide molded bodies and polyimide molded bodies
US6706346B2 (en) 2000-07-24 2004-03-16 Ube Industries, Ltd. Process for production of metal encased polyimide molded bodies and metal encased polyimide molded bodies
WO2015020019A1 (en) * 2013-08-06 2015-02-12 三菱瓦斯化学株式会社 Method for producing polyimide resin powder, and thermoplastic polyimide resin powder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843194A (en) * 1971-10-04 1973-06-22
JPS4913878A (en) * 1972-03-22 1974-02-06
JPS4930717A (en) * 1972-07-24 1974-03-19

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843194A (en) * 1971-10-04 1973-06-22
JPS4913878A (en) * 1972-03-22 1974-02-06
JPS4930717A (en) * 1972-07-24 1974-03-19

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028432A (en) * 1983-07-26 1985-02-13 Ube Ind Ltd Preparation of polyamic acid solution
JPH0553819B2 (en) * 1984-01-31 1993-08-11 Sumitomo Bakelite Co
JPS60161429A (en) * 1984-01-31 1985-08-23 Sumitomo Bakelite Co Ltd Preparation of heat-resistant resin
JPH09169905A (en) * 1985-04-26 1997-06-30 E I Du Pont De Nemours & Co Solid particulate polyimide and its production
JPS62132960A (en) * 1985-12-06 1987-06-16 Ube Ind Ltd Polyimide resin formed body
JPS62185748A (en) * 1986-02-12 1987-08-14 Ube Ind Ltd Wear-resistant molding for use as sliding material
JPH01242622A (en) * 1988-03-24 1989-09-27 Nitto Denko Corp Polyimide powder
JPH046334B2 (en) * 1988-11-07 1992-02-05 Gentaro Inoe
JPH02128665A (en) * 1988-11-07 1990-05-17 Gentaro Inoue Formation of crane-flying flat form with vegetable as raw material
EP0982343A2 (en) * 1998-08-28 2000-03-01 Osaka Prefectural Government Polyamic acid and polyimide microfine particles and processes for their production
EP0982343A3 (en) * 1998-08-28 2000-07-19 Osaka Prefectural Government Polyamic acid and polyimide microfine particles and processes for their production
US6187899B1 (en) 1998-08-28 2001-02-13 Osaka Prefectural Government Polyamic acid and polyimide microfine particles and process for their production
CN1111182C (en) * 1998-08-28 2003-06-11 大阪府 Polyamide acid and polyimide micrograin and method for preparing them
US6555647B2 (en) 2000-07-21 2003-04-29 Ube Industries, Ltd. Process for production of polyimide molded bodies and polyimide molded bodies
US6706346B2 (en) 2000-07-24 2004-03-16 Ube Industries, Ltd. Process for production of metal encased polyimide molded bodies and metal encased polyimide molded bodies
WO2015020019A1 (en) * 2013-08-06 2015-02-12 三菱瓦斯化学株式会社 Method for producing polyimide resin powder, and thermoplastic polyimide resin powder
US9670320B2 (en) 2013-08-06 2017-06-06 Mitsubishi Gas Chemical Company, Inc. Method for producing polyimide resin powder, and thermoplastic polyimide resin powder

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