| US 7,462,747 B2 | ||
| Process for preparing polyalcohols from formaldehyde having a low formic acid content | ||
| Timan Sirch, Schifferstadt (Germany); Michael Steiniger, Neustadt (Germany); Steffen Maas, Bubenheim (Germany); Stefan Rittinger, Mannheim (Germany); Stephan Schlitter, Limburgerhof (Germany); Maria Guixa, Mannheim (Germany); Todd C. Spengeman, Missouri City, Tex. (US); and Jeffrey T. Andress, Lake Jackson, Tex. (US) | ||
| Assigned to BASF Aktiengesellschaft, Ludwigshafen (Germany) | ||
| Filed on Apr. 30, 2007, as Appl. No. 11/797,007. | ||
| Claims priority of application No. 07100160 (EP), filed on Jan. 05, 2007. | ||
| Prior Publication US 2008/0167506 A1, Jul. 10, 2008 | ||
| Int. Cl. C07C 37/20 (2006.01); C07C 27/04 (2006.01); C07C 29/14 (2006.01) | ||
| U.S. Cl. 568—799 [568/862; 568/891] | 20 Claims |
1. A process for preparing polymethylol compounds of formula (I)
 comprising:
condensing an aldehyde having from 2 to 24 carbon atoms with formaldehyde in an aldol reaction to form an alkanal of formula
(II);
 hydrogenating the alkanal of formula (II); wherein
the radicals R are each, independently of one another, a further methylol group or an alkyl group having from 1 to 22 carbon
atoms or an aryl or aralkyl group having from 6 to 22 carbon atoms,
the condensing an aldehyde with formaldehyde is catalyzed by a tertiary amine, and
the formaldehyde is an aqueous formaldehyde solution having a formic acid content of <150 ppm.
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