FR2300783B1 - - Google Patents

Info

Publication number
FR2300783B1
FR2300783B1 FR7504809A FR7504809A FR2300783B1 FR 2300783 B1 FR2300783 B1 FR 2300783B1 FR 7504809 A FR7504809 A FR 7504809A FR 7504809 A FR7504809 A FR 7504809A FR 2300783 B1 FR2300783 B1 FR 2300783B1
Authority
FR
France
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
Application number
FR7504809A
Other languages
French (fr)
Other versions
FR2300783A1 (en
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to FR7504809A priority Critical patent/FR2300783A1/en
Publication of FR2300783A1 publication Critical patent/FR2300783A1/en
Application granted granted Critical
Publication of FR2300783B1 publication Critical patent/FR2300783B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/046—Elimination of a polymeric phase
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
FR7504809A 1975-02-17 1975-02-17 Porous articles from polyimide powder and polyformaldehyde - by compressing the compsn., and sintering the obtd. preform Granted FR2300783A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7504809A FR2300783A1 (en) 1975-02-17 1975-02-17 Porous articles from polyimide powder and polyformaldehyde - by compressing the compsn., and sintering the obtd. preform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7504809A FR2300783A1 (en) 1975-02-17 1975-02-17 Porous articles from polyimide powder and polyformaldehyde - by compressing the compsn., and sintering the obtd. preform

Publications (2)

Publication Number Publication Date
FR2300783A1 FR2300783A1 (en) 1976-09-10
FR2300783B1 true FR2300783B1 (en) 1980-10-17

Family

ID=9151297

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7504809A Granted FR2300783A1 (en) 1975-02-17 1975-02-17 Porous articles from polyimide powder and polyformaldehyde - by compressing the compsn., and sintering the obtd. preform

Country Status (1)

Country Link
FR (1) FR2300783A1 (en)

Also Published As

Publication number Publication date
FR2300783A1 (en) 1976-09-10

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Legal Events

Date Code Title Description
ST Notification of lapse