MX9705413A - Proceso de terminado de poliglicol. - Google Patents

Proceso de terminado de poliglicol.

Info

Publication number
MX9705413A
MX9705413A MX9705413A MX9705413A MX9705413A MX 9705413 A MX9705413 A MX 9705413A MX 9705413 A MX9705413 A MX 9705413A MX 9705413 A MX9705413 A MX 9705413A MX 9705413 A MX9705413 A MX 9705413A
Authority
MX
Mexico
Prior art keywords
hypophosphorous acid
salts
polyglycol
polyglycols
finishing processes
Prior art date
Application number
MX9705413A
Other languages
English (en)
Other versions
MXPA97005413A (es
Inventor
Abel De Oliveira
Sergio Ferauche Souza
Ricardo Araujo
Original Assignee
Dow Quimica S A
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 Dow Quimica S A filed Critical Dow Quimica S A
Priority to MXPA/A/1997/005413A priority Critical patent/MXPA97005413A/es
Priority claimed from MXPA/A/1997/005413A external-priority patent/MXPA97005413A/es
Publication of MX9705413A publication Critical patent/MX9705413A/es
Publication of MXPA97005413A publication Critical patent/MXPA97005413A/es

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

Abstract

Se describen poliglicoles que tienen un peso equivalente de OH de por lo menos 700, que pueden se terminados con ácido hipofosforoso para separar el catalizador básico residual. El ácido hipofosforoso forma sales con metales alcalinos tales como potasio. Estas sales también forman cristales grandes, semejantes a aguja, los cuales son fácilmente filtrables. Los procesos de terminado del poliglicol que utilizan ácido hipofosforoso se pueden utilizar para preparar polioles con bajas concentraciones de metal alcalino, en tanto que producen sustancialmente menos desperdicio solido y líquido que los procesos de terminado convencionales.
MXPA/A/1997/005413A 1997-07-17 Proceso de terminado de poliglicol MXPA97005413A (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MXPA/A/1997/005413A MXPA97005413A (es) 1997-07-17 Proceso de terminado de poliglicol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MXPA/A/1997/005413A MXPA97005413A (es) 1997-07-17 Proceso de terminado de poliglicol

Publications (2)

Publication Number Publication Date
MX9705413A true MX9705413A (es) 1998-10-31
MXPA97005413A MXPA97005413A (es) 1999-01-11

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