WO1996026241A3 - Polymer pellets, process for their preparation and moulded articles obtained therefrom - Google Patents

Polymer pellets, process for their preparation and moulded articles obtained therefrom Download PDF

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Publication number
WO1996026241A3
WO1996026241A3 PCT/US1996/001751 US9601751W WO9626241A3 WO 1996026241 A3 WO1996026241 A3 WO 1996026241A3 US 9601751 W US9601751 W US 9601751W WO 9626241 A3 WO9626241 A3 WO 9626241A3
Authority
WO
WIPO (PCT)
Prior art keywords
preparation
polymer pellets
obtained therefrom
articles obtained
moulded articles
Prior art date
Application number
PCT/US1996/001751
Other languages
French (fr)
Other versions
WO1996026241A2 (en
Inventor
Graig L Werling
Robert C Miller
Don R Roden
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of WO1996026241A2 publication Critical patent/WO1996026241A2/en
Publication of WO1996026241A3 publication Critical patent/WO1996026241A3/en

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
    • 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
    • C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates

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)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Polymer pellets which do not contain an interior vacuum void or contain only such a void which is reduced in size. These pellets are prepared by cutting an extruded strand which has been quenched in a liquid bath which is warm enough to avoid cooling the exterior shell of the strand and the interior core of the strand at different rates and/or which has been extruded through an elliptical die.
PCT/US1996/001751 1995-02-14 1996-02-08 Polymer pellets, process for their preparation and moulded articles obtained therefrom WO1996026241A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38981595A 1995-02-14 1995-02-14
US08/389,815 1995-02-14

Publications (2)

Publication Number Publication Date
WO1996026241A2 WO1996026241A2 (en) 1996-08-29
WO1996026241A3 true WO1996026241A3 (en) 1996-09-26

Family

ID=23539832

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/001751 WO1996026241A2 (en) 1995-02-14 1996-02-08 Polymer pellets, process for their preparation and moulded articles obtained therefrom

Country Status (1)

Country Link
WO (1) WO1996026241A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69732027T2 (en) * 1997-07-15 2005-09-08 Asahi Kasei Chemicals Corporation Method for producing a polycarbonate pellet
KR20010040764A (en) * 1998-02-09 2001-05-15 빌프리더 하이더 Polymer Particles
DE19815717C2 (en) * 1998-04-08 2000-07-27 Bayer Ag Vacuole-free polymer granules
DE10310829A1 (en) * 2003-03-13 2004-09-23 Basf Ag Thermoplastic polymer granules used to manufacture uniformly-colored moldings, fibers or films, have limited areas of concavity measured by interference contrast spectroscopy
DE102007022743A1 (en) * 2007-05-15 2008-11-20 C. F. Scheer & Cie Gmbh & Co Granulation of plastic strands
US10450491B2 (en) 2016-08-08 2019-10-22 Ticona Llc Thermally conductive polymer composition for a heat sink

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0178150A2 (en) * 1984-10-09 1986-04-16 Celanese Corporation Production of improved pellets from melt-processable polymer which is capable of forming an anisotropic melt
US4699745A (en) * 1984-06-09 1987-10-13 Bayer Aktiengesellschaft Process for the production of polycarbonate injection-moulded shaped articles
JPH04122610A (en) * 1990-09-13 1992-04-23 Mitsui Toatsu Chem Inc Manufacture of polyimide pellet
EP0489361A2 (en) * 1990-12-03 1992-06-10 The Dow Chemical Company Uniform distribution polycarbonate pellets
JPH0663938A (en) * 1992-08-14 1994-03-08 Japan Steel Works Ltd:The Method and apparatus for cooling strand by air

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4699745A (en) * 1984-06-09 1987-10-13 Bayer Aktiengesellschaft Process for the production of polycarbonate injection-moulded shaped articles
EP0178150A2 (en) * 1984-10-09 1986-04-16 Celanese Corporation Production of improved pellets from melt-processable polymer which is capable of forming an anisotropic melt
JPH04122610A (en) * 1990-09-13 1992-04-23 Mitsui Toatsu Chem Inc Manufacture of polyimide pellet
EP0489361A2 (en) * 1990-12-03 1992-06-10 The Dow Chemical Company Uniform distribution polycarbonate pellets
JPH0663938A (en) * 1992-08-14 1994-03-08 Japan Steel Works Ltd:The Method and apparatus for cooling strand by air

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; AN 94114709[14], XP002007012 *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 376 (M - 1294) 12 August 1992 (1992-08-12) *

Also Published As

Publication number Publication date
WO1996026241A2 (en) 1996-08-29

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