AR021215A1 - A METHOD FOR PREPARING AND PURIFYING A LOW MOLECULAR WEIGHT POLYETHYLENE GLYCOLBOBOXYL ACID - Google Patents

A METHOD FOR PREPARING AND PURIFYING A LOW MOLECULAR WEIGHT POLYETHYLENE GLYCOLBOBOXYL ACID

Info

Publication number
AR021215A1
AR021215A1 ARP990104408A AR021215A1 AR 021215 A1 AR021215 A1 AR 021215A1 AR P990104408 A ARP990104408 A AR P990104408A AR 021215 A1 AR021215 A1 AR 021215A1
Authority
AR
Argentina
Prior art keywords
molecular weight
low molecular
weight polyethylene
preparing
glycolboboxyl
Prior art date
Application number
Other languages
Spanish (es)
Original Assignee
Univ Utah Res Found
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 Univ Utah Res Found filed Critical Univ Utah Res Found
Publication of AR021215A1 publication Critical patent/AR021215A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/31—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by introduction of functional groups containing oxygen only in singly bound form

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Polyethers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Paper (AREA)

Abstract

Un método para preparar ácidos polietilenglicolcarboxílico de bajo peso molecular que comprende hacer reaccionar polietilenglicoles de bajo peso molecularcon ésteres de ácidos alifáticos monosustituidos con un halogeno en una base, y saponificar luego los productos intermediarios resultantes. Luego, los ácidospolietilenglicolcarboxílico son extraidos con una fase orgánica que contiene tolueno para separar compuestos sin reaccionar y productos secundarios. Luego, losácidos polietilenglicolcarboxílicos extraidos son acidificados y purificados por diálisis, filtracion por gel, o precipitacion.A method for preparing low molecular weight polyethylene glycol carboxylic acids comprising reacting low molecular weight polyethylene glycols with monosubstituted aliphatic acid esters with a halogen in a base, and then saponifying the resulting intermediates. Then, polyethylene glycol carboxylic acids are extracted with an organic phase containing toluene to separate unreacted compounds and by-products. Then, the polyethylene glycol carboxylic acids extracted are acidified and purified by dialysis, gel filtration, or precipitation.

ARP990104408 1998-09-02 1999-09-02 A METHOD FOR PREPARING AND PURIFYING A LOW MOLECULAR WEIGHT POLYETHYLENE GLYCOLBOBOXYL ACID AR021215A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9880298P 1998-09-02 1998-09-02

Publications (1)

Publication Number Publication Date
AR021215A1 true AR021215A1 (en) 2002-07-03

Family

ID=22270969

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP990104408 AR021215A1 (en) 1998-09-02 1999-09-02 A METHOD FOR PREPARING AND PURIFYING A LOW MOLECULAR WEIGHT POLYETHYLENE GLYCOLBOBOXYL ACID

Country Status (4)

Country Link
AR (1) AR021215A1 (en)
AU (1) AU6134699A (en)
TW (1) TW474912B (en)
WO (1) WO2000012458A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8026289B2 (en) 2008-10-21 2011-09-27 E.I. Du Pont De Nemours And Company Fluorinated polyoxyalkylene glycol diamide surfactants
JP6460366B2 (en) * 2013-03-27 2019-01-30 日油株式会社 Method for purifying polyethylene glycol having one amino group
JP6935059B2 (en) * 2017-03-30 2021-09-15 日油株式会社 A method for purifying polyethylene glycol having one carboxyl group
US10876039B2 (en) 2017-08-15 2020-12-29 Saudi Arabian Oil Company Thermally stable surfactants for oil based drilling fluids
US10676658B2 (en) 2017-08-15 2020-06-09 Saudi Arabian Oil Company Oil-based drilling fluids for high pressure and high temperature drilling operations
US10647903B2 (en) 2017-08-15 2020-05-12 Saudi Arabian Oil Company Oil-based drilling fluid compositions which include layered double hydroxides as rheology modifiers and amino amides as emulsifiers
JP2020531609A (en) 2017-08-15 2020-11-05 サウジ アラビアン オイル カンパニーＳａｕｄｉ Ａｒａｂｉａｎ Ｏｉｌ Ｃｏｍｐａｎｙ Thermally stable surfactant for oil-based drilling fluids
US10745606B2 (en) 2017-08-15 2020-08-18 Saudi Arabian Oil Company Oil-based drilling fluid compositions which include layered double hydroxides as rheology modifiers
US10640696B2 (en) 2017-08-15 2020-05-05 Saudi Arabian Oil Company Oil-based drilling fluids for high pressure and high temperature drilling operations
US10793762B2 (en) 2017-08-15 2020-10-06 Saudi Arabian Oil Company Layered double hydroxides for oil-based drilling fluids
US10988659B2 (en) 2017-08-15 2021-04-27 Saudi Arabian Oil Company Layered double hydroxides for oil-based drilling fluids

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623900A (en) * 1948-09-01 1952-12-30 Sandoz Ag Method for the preparation of polyether acetic acids
FR2268006B1 (en) * 1974-04-17 1980-08-14 Huels Chemische Werke Ag

Also Published As

Publication number Publication date
AU6134699A (en) 2000-03-21
WO2000012458A1 (en) 2000-03-09
TW474912B (en) 2002-02-01

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