ES2038072A1 - Procedimiento para la obtencion de polianhidridos a base de acidos dicarboxilicos y anhidrido acetico. - Google Patents

Procedimiento para la obtencion de polianhidridos a base de acidos dicarboxilicos y anhidrido acetico.

Info

Publication number
ES2038072A1
ES2038072A1 ES919101638A ES9101638A ES2038072A1 ES 2038072 A1 ES2038072 A1 ES 2038072A1 ES 919101638 A ES919101638 A ES 919101638A ES 9101638 A ES9101638 A ES 9101638A ES 2038072 A1 ES2038072 A1 ES 2038072A1
Authority
ES
Spain
Prior art keywords
prepn
distn
carboxyphenoxy
mixt
crystallisation
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
ES919101638A
Other languages
English (en)
Other versions
ES2038072B1 (es
Inventor
Figueroa Angel Alberola
Jimeno Juan Carlos Pastor
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.)
Universidad de Valladolid
Original Assignee
Universidad de Valladolid
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 Universidad de Valladolid filed Critical Universidad de Valladolid
Priority to ES9101638A priority Critical patent/ES2038072B1/es
Publication of ES2038072A1 publication Critical patent/ES2038072A1/es
Application granted granted Critical
Publication of ES2038072B1 publication Critical patent/ES2038072B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PROCEDIMIENTO PARA LA OBTENCION DE POLIANHIDRIDOS A BASE DE ACIDOS DICARBOXILICOS Y ANHIDRIDO ACETICO. EL PROCEDIMIENTO CONSISTE EN LA REACCION A REFLUJO DE LOS CORRESPONDIENTES DIACIDOS, TALES COMO EL 1,3-BIS(P-CARBOXIFENOXI)PROPANO Y 1,4-BIS(P-CARBOXIFENOXI)BUTANO, CON UN EXCESO DE ANHIDRIDO ACETICO ELIMINANDO SIMULTANEAMENTE POR DESTILACION LA MAYOR PARTE DEL ACIDO ACETICO PRODUCIDO, Y SEPARANDO POR CRISTALIZACION DEL PRODUCTO OBTENIDO AL ENFRIAR LA MEZCLA. LA TEMPERATURA DE REACCION ES LA DE EBULLICION DE LA MEZCLA REACCIONANTE Y EL TIEMPO DE REACCION ESTA COMPRENDIDO ENTRE UNA Y SEIS HORAS. LA VELOCIDAD DE DESTILACION DEL ACIDO ACETICO SE AJUSTA DE MODO QUE AL CABO DEL TIEMPO FIJADO PARA LA REACCION, EL VOLUMEN DE LA MEZCLA REACCIONANTE SE HAYA REDUCIDO A LA MITAD. PARA EVITAR LA DESPOLIMERIZACION DEL POLIMERO FORMADO, SE PURIFICA ESTE POR CRISTALIZACION EN UN DISOLVENTE APROPIADO, PREFERENTEMENTE TOLUENO.
ES9101638A 1991-07-12 1991-07-12 Procedimiento para la obtencion de polianhidridos a base de acidos dicarboxilicos y anhidrido acetico. Expired - Fee Related ES2038072B1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9101638A ES2038072B1 (es) 1991-07-12 1991-07-12 Procedimiento para la obtencion de polianhidridos a base de acidos dicarboxilicos y anhidrido acetico.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9101638A ES2038072B1 (es) 1991-07-12 1991-07-12 Procedimiento para la obtencion de polianhidridos a base de acidos dicarboxilicos y anhidrido acetico.

Publications (2)

Publication Number Publication Date
ES2038072A1 true ES2038072A1 (es) 1993-07-01
ES2038072B1 ES2038072B1 (es) 1994-02-16

Family

ID=8272993

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9101638A Expired - Fee Related ES2038072B1 (es) 1991-07-12 1991-07-12 Procedimiento para la obtencion de polianhidridos a base de acidos dicarboxilicos y anhidrido acetico.

Country Status (1)

Country Link
ES (1) ES2038072B1 (es)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260415A2 (en) * 1986-08-01 1988-03-23 Massachusetts Institute Of Technology Synthesis and application of high molecular weight polyanhydrides
EP0266603A1 (en) * 1986-10-17 1988-05-11 Massachusetts Institute Of Technology Preparation of anhydride copolymers
WO1989000855A1 (en) * 1987-07-31 1989-02-09 Massachusetts Institute Of Technology Polyanhydrides with improved hydrolytic degradation properties
EP0343889A2 (en) * 1988-05-23 1989-11-29 Hoechst Celanese Corporation Novel polyanhydrides
EP0414416A2 (en) * 1989-08-25 1991-02-27 Massachusetts Institute Of Technology Aromatic polyanhydride compositions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260415A2 (en) * 1986-08-01 1988-03-23 Massachusetts Institute Of Technology Synthesis and application of high molecular weight polyanhydrides
EP0266603A1 (en) * 1986-10-17 1988-05-11 Massachusetts Institute Of Technology Preparation of anhydride copolymers
WO1989000855A1 (en) * 1987-07-31 1989-02-09 Massachusetts Institute Of Technology Polyanhydrides with improved hydrolytic degradation properties
EP0343889A2 (en) * 1988-05-23 1989-11-29 Hoechst Celanese Corporation Novel polyanhydrides
EP0414416A2 (en) * 1989-08-25 1991-02-27 Massachusetts Institute Of Technology Aromatic polyanhydride compositions

Also Published As

Publication number Publication date
ES2038072B1 (es) 1994-02-16

Similar Documents

Publication Publication Date Title
CA2105768A1 (en) Process for the manufacture of 2,2,4,4-tetramethylcyclobutanediol
CA2144945A1 (en) Production of polysuccinimide and polyaspartic acid from maleic anhydride and ammonia
EP0372847A3 (en) Ester production by hydrogenation of carboxylic acids and anhydrides
ATE136564T1 (de) Carboxylendgruppen enthaltende polyesteramide
GR3026000T3 (en) Process for the preparation of esters of carboxylic acids from carboxylic acid halogenides and alcohols.
ES2110483T3 (es) Poliesteres cicloalifaticos que contienen grupos carboxilo terminales para la preparacion de pinturas en polvo.
AU4015693A (en) Polysuccinimide polymers and process for preparing polysuccinimide polymers
EP0690087A3 (de) Polyester als Additiv in Beschichtungsmitteln
CA2170486A1 (en) Synthesis of Amido Acids from Carboxylic Acids and Lactams
SG54994A1 (en) Oil-soluble adducts of dissuccinimides and anhydrides of unsaturated bicarboxylic aliphatic acids
FR2705668B1 (fr) Procédé de préparation d'acide acétique par oxydation ménagée de l'éthane.
MY107357A (en) Process for making olefins
WO1993009111A3 (en) Novel methods for the preparation of glycerol carbonate esters
ES2038072A1 (es) Procedimiento para la obtencion de polianhidridos a base de acidos dicarboxilicos y anhidrido acetico.
GR920300038T1 (en) Radiation-curable binder mixtures
BR9813903A (pt) Agente tixotrópico, resina alquìdica, e, composição de revestimento
EP0269453A3 (en) A process for producing carboxylic acid esters
DE59304555D1 (de) Endgruppenverschlossene antischaummittel
CA2066976A1 (en) Method of producing keto acids
CA2079763A1 (fr) Procede de preparation de l'acide adipique par hydrocarboxylation d'acides penteniques
EP0794182A4 (en) METHOD FOR PRODUCING 2 - (- G (V) -ALKOXYCARBONYLALKANOYL) -4-BUTANOLIDE AND LONG-CHAIN -G (V) -HYDROXYCARBOXYLIC ACID
AU5217600A (en) Foam-controlling process
NZ304293A (en) Preparation of 3-pentenic acid esters by carbonylation of alkoxybutenes
GR890300180T1 (en) Solid ester products of sterically hindered polyhydroxymonocarboxylic acids
TW353094B (en) Mixed alcohol and plasticizers prepared therefrom

Legal Events

Date Code Title Description
FD2A Announcement of lapse in spain

Effective date: 20111209