Method for hydrating poly-or monomethylol alkanals

Details Method for hydrating poly-or monomethylol alkanals Method for hydrating poly-or monomethylol alkanals

2006-06-13

2006-06-13

Witherspoon, Sikarl A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S814000, C568S852000, C568S863000

Reexamination Certificate

active

07060861

ABSTRACT:
In a process for the catalytic hydrogenation of a polymethylolalkanal or a monomethylolalkanal of the formula (I)where R may be identical or different and are each a substituted or unsubstituted aliphatic hydrocarbon having from 1 to 22 carbon atoms, an aryl or arylalkyl group having from 6 to 22 carbon atoms or a methylol group, in the presence of a copper-containing catalyst, the hydrogenation feed comprising the polymethylolalkanal or monomethylolalkanal has a total content of metal ions of groups 3 to 14 of the Periodic Table of the Element of up to 5 ppm.

REFERENCES:
patent: 6187971 (2001-02-01), Kratz
patent: 6201160 (2001-03-01), Brudrmueller
patent: 6207865 (2001-03-01), Breitscheidel
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patent: 99/03801 (1999-01-01), None
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Tong et al. Adsorption of Metal Ions on a New Chelating Ion-Excahnge Resin Chemically Derived from Chitosan. Chemistry Letters, 1991, (9), p 1529-1532.

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