FR2431510A1 - Increased density poly:pyrrolidone prodn. - by compression at defined temp. preserving molecular wt. and allowing melt spinning - Google Patents

Increased density poly:pyrrolidone prodn. - by compression at defined temp. preserving molecular wt. and allowing melt spinning

Info

Publication number
FR2431510A1
FR2431510A1 FR7821460A FR7821460A FR2431510A1 FR 2431510 A1 FR2431510 A1 FR 2431510A1 FR 7821460 A FR7821460 A FR 7821460A FR 7821460 A FR7821460 A FR 7821460A FR 2431510 A1 FR2431510 A1 FR 2431510A1
Authority
FR
France
Prior art keywords
pref
compression
prodn
pyrrolidone
melt spinning
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
FR7821460A
Other languages
French (fr)
Other versions
FR2431510B1 (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.)
Chevron USA Inc
Original Assignee
Chevron Research and Technology Co
Chevron Research 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
Priority to DE19782831000 priority Critical patent/DE2831000A1/en
Priority to BE189362A priority patent/BE869096A/en
Application filed by Chevron Research and Technology Co, Chevron Research Co filed Critical Chevron Research and Technology Co
Priority to FR7821460A priority patent/FR2431510A1/en
Publication of FR2431510A1 publication Critical patent/FR2431510A1/en
Application granted granted Critical
Publication of FR2431510B1 publication Critical patent/FR2431510B1/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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/46—Post-polymerisation treatment
    • 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
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)

Abstract

The water content of finely powdered polypyrrolidone is reduced, and the bulk density increased, by compressing material with a water content of 5-60, pref. 10-30, wt. % at between 50 degrees C and its m.pt. pref. 100-200 degrees C, to 3.515-21.1kg/cm2. This gives a solid with a dry (i.e. 1 wt. % water) bulk density of 0.3-0.8, pref. 0.48-0.8g/cm3. The compression is pref. effected by extrusion through a pulveriser to give a ground or granulated product. The process enables polypyrrolidone to be melt spun to fibres, pref. after the water content has been reduced to 0.5-1 wt. %. Ordinarily, because of its low density, this cannot be done unless, e.g., the polypyrrolidone has first been melt extruded to form granules, but this, unlike the new process, causes a loss in mole wt.
FR7821460A 1978-07-19 1978-07-19 Increased density poly:pyrrolidone prodn. - by compression at defined temp. preserving molecular wt. and allowing melt spinning Granted FR2431510A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19782831000 DE2831000A1 (en) 1978-07-19 1978-07-14 METHOD FOR REDUCING THE WATER CONTENT AND IMPROVING THE SHEET DENSITY OF FINE POWDERED POLYPYRROLIDONE, POLYPYRROLIDONE OBTAINED BY THIS METHOD AND THE USE THEREOF FOR MELT SPINNING
BE189362A BE869096A (en) 1978-07-19 1978-07-18 PROCESS FOR MAKING POLYPYRROLIDONE DENSE
FR7821460A FR2431510A1 (en) 1978-07-19 1978-07-19 Increased density poly:pyrrolidone prodn. - by compression at defined temp. preserving molecular wt. and allowing melt spinning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7821460A FR2431510A1 (en) 1978-07-19 1978-07-19 Increased density poly:pyrrolidone prodn. - by compression at defined temp. preserving molecular wt. and allowing melt spinning

Publications (2)

Publication Number Publication Date
FR2431510A1 true FR2431510A1 (en) 1980-02-15
FR2431510B1 FR2431510B1 (en) 1983-03-25

Family

ID=9210926

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7821460A Granted FR2431510A1 (en) 1978-07-19 1978-07-19 Increased density poly:pyrrolidone prodn. - by compression at defined temp. preserving molecular wt. and allowing melt spinning

Country Status (3)

Country Link
BE (1) BE869096A (en)
DE (1) DE2831000A1 (en)
FR (1) FR2431510A1 (en)

Also Published As

Publication number Publication date
BE869096A (en) 1978-11-16
FR2431510B1 (en) 1983-03-25
DE2831000A1 (en) 1980-01-31

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Legal Events

Date Code Title Description
ST Notification of lapse