Method for the production of 1,3-propandiol

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

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568458, C07C 29141, C07C 3120, C07C 4564, C07C 4719

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active

051718987

ABSTRACT:
The hydration of acrolein in the presence of a chelate-forming ion exchange resin based on polystyrene/divinyl benzene as catalyst and on the subsequent hydrogenation of the reaction mixture freed of the non-reacted acrolein and containing 3-hydroxypropionaldehyde is disclosed. As a result of using chelate-forming ion exchangers with anchor groups of the formula ##STR1## in which Z=H, C.sub.1 -C.sub.6 -alkyl, --CH.sub.2 --CH(CH.sub.3)--Y' or --(CH.sub.2).sub.o --Y' and Y and/or Y'=--COOH, --OH, pyridyl or --P(O)(CH.sub.2 OH)OH, the hydration occurs at lower temperatures with a greater space-time yield and especially a greater selectivity than when using previously known ion exchangers. Resins with methylene imino diacetic acid anchor groups in the H form or partially doped with alkali-, alkaline-earth or earth-metal ions are especially suitable.

REFERENCES:
patent: 3518310 (1970-06-01), Lutz
patent: 3536763 (1970-10-01), Eleuterio et al.
patent: 5015789 (1991-05-01), Arntz et al.

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