ES2192920A1 - Procedimiento para producir policarbonato-dioles - Google Patents

Procedimiento para producir policarbonato-dioles

Info

Publication number
ES2192920A1
ES2192920A1 ES200100125A ES200100125A ES2192920A1 ES 2192920 A1 ES2192920 A1 ES 2192920A1 ES 200100125 A ES200100125 A ES 200100125A ES 200100125 A ES200100125 A ES 200100125A ES 2192920 A1 ES2192920 A1 ES 2192920A1
Authority
ES
Spain
Prior art keywords
prepolymer
polycarbonatediols
chain end
manufacture
group
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.)
Granted
Application number
ES200100125A
Other languages
English (en)
Other versions
ES2192920B2 (es
Inventor
Kouchi Kashiwagi
Takashi Doi
Takayoshi Kaneko
Suzuo Takiguchi
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.)
Ube Corp
Original Assignee
Ube Industries Ltd
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 Ube Industries Ltd filed Critical Ube Industries Ltd
Publication of ES2192920A1 publication Critical patent/ES2192920A1/es
Application granted granted Critical
Publication of ES2192920B2 publication Critical patent/ES2192920B2/es
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
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/02—Aliphatic polycarbonates
    • C08G64/0208—Aliphatic polycarbonates saturated
    • 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
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/20—General preparatory processes
    • C08G64/30—General preparatory processes using carbonates
    • C08G64/305—General preparatory processes using carbonates and alcohols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

Procedimiento para producir policarbonato-dioles que comprende las etapas de: (1) preparación de un prepolímero de policarbonato-diol mediante una reacción de transesterificación de carbonato de dimetilo con un compuesto dihidroxílico alifático en una relación molar de reacción r comprendida en el margen de 1,31 a 1,58, que satisface la ecuación: r=(n + 1)/n, en la que n es un número positivo de 1,72 a 3,23, que corresponde al grado de polimerización medio numérico del prepolímero de policarbonato- diol, en presencia de un catalizador, mientras que se destila y retira una mezcla del alcohol metílico, producido como producto secundario, con el carbonato de dimetilo que no ha reaccionado procedente del sistema de reacción; y (2) polimerización por condensación del prepolímero de policarbonato-diol en presencia de un catalizador, mientras que se destila un compuesto dihidroxílico alifático producido a partir del sistema de reacción, para producir el policarbonato-diol buscado, del que sustancialmente todos los grupos terminales de la molécula son grupos hidroxilo. El policarbonato-diol producido es útil como material para diversos productos químicos.
ES200100125A 2000-01-21 2001-01-19 Procedimiento para producir policarbonato-dioles. Expired - Fee Related ES2192920B2 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-012362 2000-01-21
JP2000012362 2000-01-21

Publications (2)

Publication Number Publication Date
ES2192920A1 true ES2192920A1 (es) 2003-10-16
ES2192920B2 ES2192920B2 (es) 2004-06-16

Family

ID=29727391

Family Applications (1)

Application Number Title Priority Date Filing Date
ES200100125A Expired - Fee Related ES2192920B2 (es) 2000-01-21 2001-01-19 Procedimiento para producir policarbonato-dioles.

Country Status (1)

Country Link
ES (1) ES2192920B2 (es)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787632A (en) * 1954-07-07 1957-04-02 Columbia Southern Chem Corp Polycarbonates
US4131731A (en) * 1976-11-08 1978-12-26 Beatrice Foods Company Process for preparing polycarbonates
US5171830A (en) * 1991-08-16 1992-12-15 Arco Chemical Technology, L.P. Catalytic process for the preparation of polyalkylene carbonates
EP0754714A1 (en) * 1994-04-08 1997-01-22 Asahi Kasei Kogyo Kabushiki Kaisha Process for producing hydroxyl-terminated polycarbonate
WO2000001755A2 (de) * 1998-07-02 2000-01-13 Cognis Deutschland Gmbh Verfahren zur herstellung von polycarbonaten mit terminalen oh-gruppen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787632A (en) * 1954-07-07 1957-04-02 Columbia Southern Chem Corp Polycarbonates
US4131731A (en) * 1976-11-08 1978-12-26 Beatrice Foods Company Process for preparing polycarbonates
US5171830A (en) * 1991-08-16 1992-12-15 Arco Chemical Technology, L.P. Catalytic process for the preparation of polyalkylene carbonates
EP0754714A1 (en) * 1994-04-08 1997-01-22 Asahi Kasei Kogyo Kabushiki Kaisha Process for producing hydroxyl-terminated polycarbonate
WO2000001755A2 (de) * 1998-07-02 2000-01-13 Cognis Deutschland Gmbh Verfahren zur herstellung von polycarbonaten mit terminalen oh-gruppen

Also Published As

Publication number Publication date
ES2192920B2 (es) 2004-06-16

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