GB1125403A - Production of rods and other sections of polyamides - Google Patents

Production of rods and other sections of polyamides

Info

Publication number
GB1125403A
GB1125403A GB776/66A GB77666A GB1125403A GB 1125403 A GB1125403 A GB 1125403A GB 776/66 A GB776/66 A GB 776/66A GB 77666 A GB77666 A GB 77666A GB 1125403 A GB1125403 A GB 1125403A
Authority
GB
United Kingdom
Prior art keywords
rods
polymerization
sections
extrusion
melt
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.)
Expired
Application number
GB776/66A
Inventor
Ludwig Raichle
Hans Jung
Rolf Schellenberg
Hermann Linge
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
Application filed by BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1125403A publication Critical patent/GB1125403A/en
Expired 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
    • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
    • C08G69/14—Lactams
    • C08G69/16—Preparatory processes
    • C08G69/18—Anionic polymerisation
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/06—Rod-shaped
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles

Landscapes

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

Abstract

1,125,403. Extruding polyamide sections. BADISCHE ANILIN- & SODA-FABRIK A.G. 7 Jan., 1966 [9 Jan., 1965], No. 776/66. Heading B5A. Polyamide rods 8 of various cross-sections are formed by ram extrusion of a supercooled melt of the resin through a cooled die 7. The term " supercooled melt " is defined as the state of the melt when at a temperature of 5-10‹ C. below its melting-point after polymerization, but before crystallization sets in. The extrusion process comprises two stages; in the first a mixture 2 of a lactam, catalyst and activator is homogenized by means of a plate 1 within a mixing vessel heated to the polymerization temperature, and in the second the mixing vessel is placed within barrel 6 of the extruder where anionic polymerization takes place and the bottom 3, Fig. 1, or 10, Fig. 2, of the vessel, which is movable, is acted upon by a ram 11. The preferred range of polymerization temperatures is 100-140‹ C. and that for extrusion is 180-210‹ C. According to the invention the rods have a monomer content of less than 1À2% by weight and a water absorption of less than 50% by weight and the rods may be stretched by rollers or a sizing die to increase their strength. Gearwheels may be made from the rods. Numerous lactams, activators and catalysts are listed as well as conventional additives. An example is given.
GB776/66A 1965-01-09 1966-01-07 Production of rods and other sections of polyamides Expired GB1125403A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0080050 1965-01-09

Publications (1)

Publication Number Publication Date
GB1125403A true GB1125403A (en) 1968-08-28

Family

ID=6980561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB776/66A Expired GB1125403A (en) 1965-01-09 1966-01-07 Production of rods and other sections of polyamides

Country Status (8)

Country Link
AT (1) AT282927B (en)
BE (1) BE674823A (en)
CH (1) CH435698A (en)
DE (1) DE1570237C3 (en)
FR (1) FR1462950A (en)
GB (1) GB1125403A (en)
NL (1) NL6600166A (en)
SE (1) SE308202B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496514A (en) * 1983-01-27 1985-01-29 The B. F. Goodrich Company Process using supercooled liquid lactam mixtures

Also Published As

Publication number Publication date
BE674823A (en) 1966-07-07
FR1462950A (en) 1966-12-16
NL6600166A (en) 1966-07-11
DE1570237C3 (en) 1974-05-02
DE1570237A1 (en) 1970-05-21
AT282927B (en) 1970-07-10
DE1570237B2 (en) 1973-07-12
SE308202B (en) 1969-02-03
CH435698A (en) 1967-05-15

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