BR8300814A - Processo e aparelho para estabilizacao de copolimeros de acetal - Google Patents

Processo e aparelho para estabilizacao de copolimeros de acetal

Info

Publication number
BR8300814A
BR8300814A BR8300814A BR8300814A BR8300814A BR 8300814 A BR8300814 A BR 8300814A BR 8300814 A BR8300814 A BR 8300814A BR 8300814 A BR8300814 A BR 8300814A BR 8300814 A BR8300814 A BR 8300814A
Authority
BR
Brazil
Prior art keywords
stabilizing
acetal copolymers
acetal
copolymers
stabilizing acetal
Prior art date
Application number
BR8300814A
Other languages
English (en)
Inventor
Ananda Mohan Chatterjee
Original Assignee
Celanese Corp
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 Celanese Corp filed Critical Celanese Corp
Publication of BR8300814A publication Critical patent/BR8300814A/pt

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
    • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
    • C08G2/30—Chemical modification by after-treatment
    • C08G2/36—Chemical modification by after-treatment by depolymerisation
    • 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
    • B29C48/362—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using static mixing devices
    • 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
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same 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
    • B29C48/25—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
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • B29C48/705—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows in the die zone, e.g. to create flow homogeneity
    • 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
    • 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
    • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
    • 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)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
BR8300814A 1982-02-19 1983-02-18 Processo e aparelho para estabilizacao de copolimeros de acetal BR8300814A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35050282A 1982-02-19 1982-02-19

Publications (1)

Publication Number Publication Date
BR8300814A true BR8300814A (pt) 1983-11-16

Family

ID=23377005

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8300814A BR8300814A (pt) 1982-02-19 1983-02-18 Processo e aparelho para estabilizacao de copolimeros de acetal

Country Status (5)

Country Link
EP (1) EP0088541B1 (pt)
JP (1) JPS58152012A (pt)
BR (1) BR8300814A (pt)
CA (1) CA1198246A (pt)
DE (1) DE3381047D1 (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326008A1 (de) * 1982-07-06 1985-02-07 Reich GmbH + Co KG Mellrichstadt, 8744 Mellrichstadt Fahrradglocke
JPS6063216A (ja) * 1983-09-16 1985-04-11 Polyplastics Co 熱安定性，成形性の改良されたポリアセタ−ル重合体の製造法
JPH0772220B2 (ja) * 1986-11-17 1995-08-02 三菱瓦斯化学株式会社 オキシメチレン共重合体の安定化方法
WO1991016189A1 (en) * 1990-04-12 1991-10-31 Exxon Chemical Patents Inc. Polymer grafting process, apparatus and products obtained therewith
DE69208387T2 (de) * 1991-05-06 1996-07-25 Dow Corning Sa Herstellung von feuchtigkeitshärtenden Organosiloxanzusammensetzungen
JP2884439B2 (ja) * 1994-03-22 1999-04-19 旭化成工業株式会社 オキシメチレン共重合体の末端安定化方法
CN1045612C (zh) * 1994-04-07 1999-10-13 旭化成工业株式会社 制备稳定化氧亚甲基共聚物的方法
US6365655B1 (en) 1997-03-26 2002-04-02 Asahi Kasei Kogyo Kabushiki Kaisha Process for stabilizing oxymethylene copolymer
CN109563025B (zh) 2016-07-29 2021-07-23 旭化成株式会社 季铵化合物以及利用其的对来自聚缩醛的挥发性有机化合物的生成抑制
EP4059970A1 (en) 2018-09-14 2022-09-21 Asahi Kasei Kabushiki Kaisha Polyoxymethylene and method of producing same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL263823A (pt) * 1960-04-21
US3318848A (en) * 1963-06-20 1967-05-09 Celanese Corp Melt hydrolysis of oxymethylene copolymers
US3418280A (en) * 1964-12-31 1968-12-24 Celanese Corp Stabilization of oxymethylene copolymers by alkaline hydrolysis
IT1051892B (it) * 1975-12-23 1981-05-20 Sir Soc Italiana Resine Spa Procedimento per migliorare la stabilita degli omopolimeri acetalici eterificati
JPS55157617A (en) * 1979-05-28 1980-12-08 Mitsubishi Gas Chem Co Inc Thermal stabilization of oxymethylene copolymer

Also Published As

Publication number Publication date
EP0088541A2 (en) 1983-09-14
EP0088541B1 (en) 1990-01-03
DE3381047D1 (de) 1990-02-08
CA1198246A (en) 1985-12-17
EP0088541A3 (en) 1986-03-19
JPS58152012A (ja) 1983-09-09

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Legal Events

Date Code Title Description
MM Lapse due to non-payment of fees (art. 50)