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JPS56133339A - Preparation of foamed sheet material - Google Patents

Preparation of foamed sheet material

Info

Publication number
JPS56133339A
JPS56133339A JP3616280A JP3616280A JPS56133339A JP S56133339 A JPS56133339 A JP S56133339A JP 3616280 A JP3616280 A JP 3616280A JP 3616280 A JP3616280 A JP 3616280A JP S56133339 A JPS56133339 A JP S56133339A
Authority
JP
Japan
Prior art keywords
component
composition
boiling point
foamed sheet
air
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
JP3616280A
Other languages
Japanese (ja)
Other versions
JPS6223971B2 (en
Inventor
Junichi Tamura
Hiroshi Mera
Akihiro Aoki
Hideharu Sasaki
Tsutomu Nakamura
Keizo Shimada
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP3616280A priority Critical patent/JPS56133339A/en
Publication of JPS56133339A publication Critical patent/JPS56133339A/en
Publication of JPS6223971B2 publication Critical patent/JPS6223971B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE: To obtain a foamed sheet having improved heat resistance safely at a low cost, by extruding a composition consisting of an aromatic polyamide, an amide solvent, a halogenated hydrocarbon, etc. in a specific proportion into air at a specific temperature, and coagulating the extrudate.
CONSTITUTION: (P) An aromatic polyamide polymer containing preferably 75mol% or more m-phenylene isophthalamide in the repeating units is incorporated with (S) an aromatic solvent, e.g. dimethylacetamide, and (H) a halogenated hyrocarbon, e.g. dichloromethane, at a ratio in the range of a square ACDF in a triangular coordinate and further 5W60wt%, based on the component (P), alkali (earth) metallic or ammonium salt, e.g. lithium chloride, to give a composition. The resultant composition is then extruded into air at a temperature 40°C or more higher than the boiling point of the component (H) and lower than the boiling point of the component (S), introduced into an aqueous coagulation bath, coagulated and dried.
COPYRIGHT: (C)1981,JPO&Japio
JP3616280A 1980-03-24 1980-03-24 Preparation of foamed sheet material Granted JPS56133339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3616280A JPS56133339A (en) 1980-03-24 1980-03-24 Preparation of foamed sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3616280A JPS56133339A (en) 1980-03-24 1980-03-24 Preparation of foamed sheet material

Publications (2)

Publication Number Publication Date
JPS56133339A true JPS56133339A (en) 1981-10-19
JPS6223971B2 JPS6223971B2 (en) 1987-05-26

Family

ID=12462063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3616280A Granted JPS56133339A (en) 1980-03-24 1980-03-24 Preparation of foamed sheet material

Country Status (1)

Country Link
JP (1) JPS56133339A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61101541A (en) * 1984-10-24 1986-05-20 イー・アイ・デユポン・デ・ニモアス・アンド・カンパニー Gas separation membrane and its production
WO2001019906A1 (en) * 1999-09-13 2001-03-22 Teijin Limited Polymethaphenylene isophthalamide based polymer porous film, method for producing the same and separator for cell
JP2003025344A (en) * 2001-07-18 2003-01-29 Teijin Ltd Method for manufacturing aromatic polyamide molded object
JP2003096228A (en) * 2001-09-26 2003-04-03 Teijin Ltd Foam precursor, foamed product and production method therefor
JP2020158640A (en) * 2019-03-27 2020-10-01 帝人株式会社 Para-type total aromatic polyamide film and method for producing the same, and separator containing said film

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0382863U (en) * 1989-12-07 1991-08-23

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61101541A (en) * 1984-10-24 1986-05-20 イー・アイ・デユポン・デ・ニモアス・アンド・カンパニー Gas separation membrane and its production
WO2001019906A1 (en) * 1999-09-13 2001-03-22 Teijin Limited Polymethaphenylene isophthalamide based polymer porous film, method for producing the same and separator for cell
US7407702B2 (en) 1999-09-13 2008-08-05 Teijin Limited Polymetaphenylene isophthalamide-based polymer porous film, process for its production and battery separator
JP2003025344A (en) * 2001-07-18 2003-01-29 Teijin Ltd Method for manufacturing aromatic polyamide molded object
JP2003096228A (en) * 2001-09-26 2003-04-03 Teijin Ltd Foam precursor, foamed product and production method therefor
JP2020158640A (en) * 2019-03-27 2020-10-01 帝人株式会社 Para-type total aromatic polyamide film and method for producing the same, and separator containing said film

Also Published As

Publication number Publication date
JPS6223971B2 (en) 1987-05-26

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