GB905072A - A process for the production of polycarbonate filamentary materials - Google Patents

A process for the production of polycarbonate filamentary materials

Info

Publication number
GB905072A
GB905072A GB33508/60A GB3350860A GB905072A GB 905072 A GB905072 A GB 905072A GB 33508/60 A GB33508/60 A GB 33508/60A GB 3350860 A GB3350860 A GB 3350860A GB 905072 A GB905072 A GB 905072A
Authority
GB
United Kingdom
Prior art keywords
worm
polycarbonate
melt
hydroxy
fitted
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
GB33508/60A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB905072A publication Critical patent/GB905072A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/04—Melting filament-forming substances
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • D01F6/64—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters from polycarbonates
    • 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
    • B29C48/05—Filamentary, e.g. strands

Abstract

<PICT:0905072/IV(a)/1> Polycarbonate filamentary materials are made by melt-spinning from a melt-extruding worm press, at temperatures above the softening range of the polycarbonate and below 300 DEG C., with a residence time in the worm press of less than 40 secs., the polycarbonate having such a low water content that the degradation on heating a specimen to 300 DEG C. for 1 min. is less than 1%. Specified polycarbonates include those derived from 2,2-di-(4-hydroxy phenyl)-propane, 1, 1-di(4-hydroxy-phenyl)-ethane or 1,1-di(4-hydroxy-phenol) butane. Apparatus as shown comprises a worm 3 rotating in a cylindrical sleeve 1, fitted with a cooling duct 2. The funnel-shaped intake chamber 4 is fed with raw material from supply pipe 5, and is enclosed by the cover 6 which accomodates the worm mounting 17. The clutch 15 connects the worm to driving motor 16. The lower conical end of the worm runs in a conical recess 8 of the spinning pump unit 7 from which a passage 9 leads to a constant speed measuring pump 10, from which the melt flows through a passage 11 and via filter 13 to the nozzle plate 12. The polycarbonate is heated to a melt by the frictional heat generated by the worm, but the pump unit is fitted with an electric heater 14 to avoid heat losses and hence viscosity changes. Melt-uniformity is enhanced by utilising a driving motor the speed of rotation of which decreases with increasing torque, so that changes in melt-viscosity are automatically compensated by variation in the speed of the worm. After extrusion, the filaments or monofils may be stretched in conventional manner at temperatures above the setting temperature (130 DEG -140 DEG C., depending on the polycarbonate used) but below the softening range (150 DEG -230 DEG C. depending on the polycarbonate used) to draw ratios of up to 1:4.
GB33508/60A 1959-10-01 1960-09-29 A process for the production of polycarbonate filamentary materials Expired GB905072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF29509A DE1137167B (en) 1959-10-01 1959-10-01 Process for the production of structures, such as threads or wires, from polycarbonates

Publications (1)

Publication Number Publication Date
GB905072A true GB905072A (en) 1962-09-05

Family

ID=7093345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33508/60A Expired GB905072A (en) 1959-10-01 1960-09-29 A process for the production of polycarbonate filamentary materials

Country Status (5)

Country Link
BE (1) BE595521A (en)
CH (1) CH392768A (en)
DE (1) DE1137167B (en)
GB (1) GB905072A (en)
NL (1) NL256449A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313184A2 (en) * 1975-06-04 1976-12-31 Nordson Corp APPARATUS FOR FUSION AND DISTRIBUTION OF A THERMOPLASTIC MATERIAL
US7847051B2 (en) 2008-03-05 2010-12-07 Bayer Materialscience Ag Phase boundary processes for preparing polycarbonates
US7879967B2 (en) 2007-04-03 2011-02-01 Bayer Materialscience Ag Modified polycarbonates, polyester carbonates and polyesters having improved elongation behavior and flame resistance
US7968671B2 (en) 2008-05-15 2011-06-28 Bayer Material Science Ag Alkylphenol-terminated copolycarbonates, processes for preparing the same, molding compositions containing the same, and articles prepared therefrom
US8110649B2 (en) 2008-02-29 2012-02-07 Bayer Materialscience Ag Polycarbonates comprising cyclic oligomers and having an improved flow behavior
US8158745B2 (en) 2008-04-18 2012-04-17 Bayer Materialscience Ag Polycarbonates having rearrangement structures, cyclic and linear oligomers and also flow behavior
US8202961B2 (en) 2008-02-13 2012-06-19 Bayer Materialscience Ag Alkylphenol for adjusting the molecular weight, and polycarbonate compositions having improved properties
US8329852B2 (en) 2008-11-28 2012-12-11 Bayer Materialscience Ag Copolycarbonates having improved surface hardness
US8507635B2 (en) 2008-08-05 2013-08-13 Bayer Intellectual Property Gmbh Modified polycarbonates having improved surface properties
US9139730B2 (en) 2009-03-26 2015-09-22 Bayer Materialscience Ag (Co)polycarbonates with improved optical properties
US9771451B2 (en) 2014-01-24 2017-09-26 Covestro Deutschland Ag Method for producing polycarbonate according to the phase interface method
CN111636102A (en) * 2020-05-27 2020-09-08 义乌华鼎锦纶股份有限公司 Improve polyamide fibre spinning melting device of fuse-element output homogeneity
US11319398B2 (en) 2017-02-02 2022-05-03 Covestro Deutschland Ag Method for the production of polyoxazolidinone polymer compounds
US11326018B2 (en) 2016-08-19 2022-05-10 Covestro Deutschland Ag Process for the synthesis of polyoxazolidinone compounds
EP4036287A4 (en) * 2019-09-27 2024-04-17 Kuraray Co Polycarbonate fibers, fiber structure and resin composite body

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421647A1 (en) * 1984-06-09 1985-12-12 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING POLYCARBONATE INJECTION MOLDED BODIES
WO2001085869A1 (en) 2000-05-12 2001-11-15 Bayer Aktiengesellschaft Antistatic agent
ATE516316T1 (en) 2008-02-13 2011-07-15 Bayer Materialscience Ag METHOD FOR PRODUCING POLYCARBONATES
DE102008008841A1 (en) 2008-02-13 2009-08-20 Bayer Materialscience Ag Preparing (co)polycarbonate or diaryl carbonate, useful in e.g. sunglasses, comprises converting di-, mono-phenol and phosgene to chloroformic acid aryl ester, oligo- or diaryl-carbonate, and reacting the product under alkaline solution
DE102009013643A1 (en) 2009-03-18 2010-09-30 Bayer Materialscience Ag Copolycarbonates with improved properties
DE102009058099A1 (en) 2009-12-12 2011-06-16 Bayer Materialscience Ag Polycarbonate blends with high heat resistance and improved surface properties
DE102009058462A1 (en) 2009-12-16 2011-06-22 Bayer MaterialScience AG, 51373 Producing polycarbonate injection molded body comprises introducing injection molded bodies containing polycarbonate in reactor, inerting atmosphere of reactor, introducing fluorine-inert gas mixture and evacuating and flushing the reactor
EP3985047A1 (en) 2020-10-13 2022-04-20 Covestro Deutschland AG Method for the preparation of a polycarbonate based on the interfacial process with solvent exchange

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313184A2 (en) * 1975-06-04 1976-12-31 Nordson Corp APPARATUS FOR FUSION AND DISTRIBUTION OF A THERMOPLASTIC MATERIAL
US7879967B2 (en) 2007-04-03 2011-02-01 Bayer Materialscience Ag Modified polycarbonates, polyester carbonates and polyesters having improved elongation behavior and flame resistance
US8202961B2 (en) 2008-02-13 2012-06-19 Bayer Materialscience Ag Alkylphenol for adjusting the molecular weight, and polycarbonate compositions having improved properties
US8110649B2 (en) 2008-02-29 2012-02-07 Bayer Materialscience Ag Polycarbonates comprising cyclic oligomers and having an improved flow behavior
US7847051B2 (en) 2008-03-05 2010-12-07 Bayer Materialscience Ag Phase boundary processes for preparing polycarbonates
US8158745B2 (en) 2008-04-18 2012-04-17 Bayer Materialscience Ag Polycarbonates having rearrangement structures, cyclic and linear oligomers and also flow behavior
US7968671B2 (en) 2008-05-15 2011-06-28 Bayer Material Science Ag Alkylphenol-terminated copolycarbonates, processes for preparing the same, molding compositions containing the same, and articles prepared therefrom
US8507635B2 (en) 2008-08-05 2013-08-13 Bayer Intellectual Property Gmbh Modified polycarbonates having improved surface properties
US8329852B2 (en) 2008-11-28 2012-12-11 Bayer Materialscience Ag Copolycarbonates having improved surface hardness
US9139730B2 (en) 2009-03-26 2015-09-22 Bayer Materialscience Ag (Co)polycarbonates with improved optical properties
US9771451B2 (en) 2014-01-24 2017-09-26 Covestro Deutschland Ag Method for producing polycarbonate according to the phase interface method
US11326018B2 (en) 2016-08-19 2022-05-10 Covestro Deutschland Ag Process for the synthesis of polyoxazolidinone compounds
US11319398B2 (en) 2017-02-02 2022-05-03 Covestro Deutschland Ag Method for the production of polyoxazolidinone polymer compounds
EP4036287A4 (en) * 2019-09-27 2024-04-17 Kuraray Co Polycarbonate fibers, fiber structure and resin composite body
CN111636102A (en) * 2020-05-27 2020-09-08 义乌华鼎锦纶股份有限公司 Improve polyamide fibre spinning melting device of fuse-element output homogeneity
CN111636102B (en) * 2020-05-27 2021-04-20 义乌华鼎锦纶股份有限公司 Improve polyamide fibre spinning melting device of fuse-element output homogeneity

Also Published As

Publication number Publication date
DE1137167B (en) 1962-09-27
BE595521A (en) 1900-01-01
CH392768A (en) 1965-05-31
NL256449A (en) 1900-01-01

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