FR2002387A1 - Continuous prodn of nylon 66 from low m w nylon-6 6 in - Google Patents

Continuous prodn of nylon 66 from low m w nylon-6 6 in

Info

Publication number
FR2002387A1
FR2002387A1 FR6904201A FR6904201A FR2002387A1 FR 2002387 A1 FR2002387 A1 FR 2002387A1 FR 6904201 A FR6904201 A FR 6904201A FR 6904201 A FR6904201 A FR 6904201A FR 2002387 A1 FR2002387 A1 FR 2002387A1
Authority
FR
France
Prior art keywords
nylon
mol
low
continuous
screw
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.)
Withdrawn
Application number
FR6904201A
Other languages
French (fr)
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 claimed from DE19681720349 external-priority patent/DE1720349A1/en
Application filed by BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of FR2002387A1 publication Critical patent/FR2002387A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • C08G69/28—Preparatory processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B01J19/20—Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polyamides (AREA)

Abstract

Continuous prepn. of high M.W. nylon 66 by continuous further condensation of low mol. wt. nylon 66 in a screw reactor by heating molten, low mol. wt. nylon 66 in a self-cleansing screw reactor, provided with at least one opening for discharging steam, for 5-45 mins. at 270-285 deg.C and a pressure of 50 mm Hg to 2 atm., with an energy supply to the screw of 0.03-0.2 kWh per kg. nylon. The process and apparatus enable low mol. wt. nylon 66 to be converted into high mol. wt. nylon 66 without risk of degradation or discolouration, of the nylon 66. The condensation is carried out under controlled temp. conditions with effective removal of steam. Uniform high mol. wt. nylon 66 is formed, without a content of gel material.
FR6904201A 1968-02-22 1969-02-19 Continuous prodn of nylon 66 from low m w nylon-6 6 in Withdrawn FR2002387A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEB0096760 1968-02-22
DE19681720349 DE1720349A1 (en) 1968-02-22 1968-02-22 Process and device for the continuous production of higher molecular weight polyamide 6,6

Publications (1)

Publication Number Publication Date
FR2002387A1 true FR2002387A1 (en) 1969-10-17

Family

ID=29421242

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6904201A Withdrawn FR2002387A1 (en) 1968-02-22 1969-02-19 Continuous prodn of nylon 66 from low m w nylon-6 6 in

Country Status (2)

Country Link
FR (1) FR2002387A1 (en)
NL (1) NL6902687A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376173A1 (en) * 1976-12-30 1978-07-28 Gen Electric PERFECTED PROCESS FOR POLYMERIZING AN EXTRUDED FUSION MASS, FOR THE MANUFACTURE OF POLYETHERIMIDES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2376173A1 (en) * 1976-12-30 1978-07-28 Gen Electric PERFECTED PROCESS FOR POLYMERIZING AN EXTRUDED FUSION MASS, FOR THE MANUFACTURE OF POLYETHERIMIDES

Also Published As

Publication number Publication date
NL6902687A (en) 1969-08-26

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Legal Events

Date Code Title Description
ST Notification of lapse