Patent · US Expired

Crosslinked organic resins containing SiO.sub.2 and sulphonic acid groups

US4804704A · kind A · utility

1Cited by

3References

9Claims

0Family size

Assignee

EC Erdolchemie GmbH · DE

Inventors

Bernhard Schleppinghoff · Dormagen, DE
Mathias Lux · Bergheim, DE
Horst Reinhardt · Bergheim, DE

Key dates

Filing date	Mar 10, 1987
Grant date	Feb 14, 1989
Priority date	—
Expiry date	Mar 10, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/52
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Crosslinked organic resins, containing SiO.sub.2 and sulphonic acid groups, having an SiO.sub.2 content of 0.1-10% by weight, relative to the total weight of the SiO.sub.2 -containing resins, are prepared by steeping crosslinked organic resins, containing sulphonic acid groups, in the alkali form in aqueous alkali metal silicate solutions or (quaternary) alkylammonium silicate solutions, and subsequently precipitating the SiO.sub.2 using mineral acid, and simultaneously converting the resin into the H.sup.+ form. These resins can be used as acid catalysts in the cleavage of tert.-alkyl ethers into the basic tertiary olefins and the basic alkanols. This use has proven particularly advantageous when the tert.-alkyl alkyl ethers to be cleaved are employed together with water for the cleavage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.