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US 3,943,074 AGranted
Vinyl phosphonic acid-divinyl sulfone copolymer ion exchange resin
Assignees.a. Texaco Belgium n.v.
InventorLothar G. Dulog
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Abstract
Disclosed are cross-linked polymer catalysts containing phosphonic acid groups on aliphatic bonds which are useful for hydrating alkenes under moderate temperature and pressure conditions.
Claims4
A vinylphosphonic copolymer ion exchange resin acid catalyst consisting essentially of repeating units of the formula:
- ##EQU7## wherein the ratio x/y ranges from about 0.5 to about 1.5.
A method of making a vinylphosphonic acid catalyst which comprises heating in an oxygen-free atmosphere in the presence of a radical initiator a vinylphosphonate of the formula:
- ##EQU8## wherein R = lower alkyl with a divinyl sulfone of the formula:
- CH.sub.2 =CH--SO.sub.2 --CH=CH.sub.2
- hydrolyzing the resulting product in acid and recovering a solid copolymeric catalyst of the formula:
- ##EQU9## wherein the ratio x/y ranges from about 0.5 to about 1.5.
1 more element
Dependencies are inferred from the claim text.