DE3381047D1 - Verfahren und vorrichtung zur kontinuierlichen schmelzhydrolyse von azetalcopolymerisation. - Google Patents

Verfahren und vorrichtung zur kontinuierlichen schmelzhydrolyse von azetalcopolymerisation.

Info

Publication number
DE3381047D1
DE3381047D1 DE8383300806T DE3381047T DE3381047D1 DE 3381047 D1 DE3381047 D1 DE 3381047D1 DE 8383300806 T DE8383300806 T DE 8383300806T DE 3381047 T DE3381047 T DE 3381047T DE 3381047 D1 DE3381047 D1 DE 3381047D1
Authority
DE
Germany
Prior art keywords
azetal
copolymerisation
continuous melt
melt hydrolysis
hydrolysis
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 - Fee Related
Application number
DE8383300806T
Other languages
English (en)
Inventor
Ananda Mohan Chatterjee
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.)
Celanese Corp
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
Application granted granted Critical
Publication of DE3381047D1 publication Critical patent/DE3381047D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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)
DE8383300806T 1982-02-19 1983-02-17 Verfahren und vorrichtung zur kontinuierlichen schmelzhydrolyse von azetalcopolymerisation. Expired - Fee Related DE3381047D1 (de)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DE3381047D1 true DE3381047D1 (de) 1990-02-08

Family

ID=23377005

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383300806T Expired - Fee Related DE3381047D1 (de) 1982-02-19 1983-02-17 Verfahren und vorrichtung zur kontinuierlichen schmelzhydrolyse von azetalcopolymerisation.

Country Status (5)

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

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
EP0512730B1 (de) * 1991-05-06 1996-02-21 Dow Corning S.A. Herstellung von feuchtigkeitshärtenden Organosiloxanzusammensetzungen
WO1995025761A1 (fr) * 1994-03-22 1995-09-28 Asahi Kasei Kogyo Kabushiki Kaisha Procede de stabilisation des extremites moleculaires d'un copolymere d'oxymethylene
DE19581460C2 (de) * 1994-04-07 2001-01-11 Asahi Chemical Ind Verfahren zur Herstellung eines stabilisierten Oxymethylen-Copolymeren
DE19882148B4 (de) 1997-03-26 2006-06-29 Asahi Kasei Kabushiki Kaisha Verfahren zum Stabilisieren eines Oxymethylen-Copolymeren
SG11201900197QA (en) 2016-07-29 2019-02-27 Asahi Chemical Ind Quaternary ammonium compound, and agent for suppression of generation of volatile organic compound from polyacetal by use of the same
KR102516330B1 (ko) 2018-09-14 2023-03-30 아사히 가세이 가부시키가이샤 폴리옥시메틸렌 및 그 제조 방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL130782C (de) * 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
EP0088541A3 (en) 1986-03-19
JPS58152012A (ja) 1983-09-09
CA1198246A (en) 1985-12-17
EP0088541A2 (de) 1983-09-14
BR8300814A (pt) 1983-11-16
EP0088541B1 (de) 1990-01-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee