Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1987-03-10
1989-02-14
Henderson, Christopher
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
525442, 524575, 524594, C08K 334, C08K 336
Patent
active
048047040
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.
REFERENCES:
patent: 2578937 (1951-12-01), Kunin
patent: 4125506 (1978-11-01), Lundberg
patent: 4286082 (1981-08-01), Tsubakimoto
Lux Mathias
Reinhardt Horst
Schleppinghoff Bernhard
Ec Erdolchemie GmbH
Henderson Christopher
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