The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1998
Filed:
Nov. 20, 1995
Hiroshi Yamamoto, Suita, JP;
Hisakazu Shindou, Suita, JP;
Hirokazu Itoh, Kobe, JP;
Tadahiro Yoneda, Ibaragi, JP;
Masatoshi Yoshida, Nara, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
An unsaturated aldehyde expressed by Formula (I) below is hydrated with a solution in the presence of a carboxylic-acid-based resin having of a structure expressed by Formula (II) below: ##STR1## where R represents one of a hydrogen atom and a hydrocarbon group having up to five carbons; ##STR2## where R.sub.1 and R.sub.2 respectively represent a hydrogen atom, hydrocarbon group having up to five carbons, or --(--CH.sub.2 --).sub.p1 --X group, p.sub.1, k.sub.1, and m.sub.1 respectively represent an integer from zero to six, n.sub.1 represents an integer from one to six, Y.sub.1 represents --O--, --S--, or --NR.sub.3 --, R.sub.3 represents a hydrogen atom or hydrocarbon group having up to five carbons, and X represents a carboxylic-acid-based resin main body. Using a heat-resistant catalyst as above makest it possible to increase the reaction rate by heating, and produce hydroxyalkanal at high selectivity and yield out of an industrially advantageous high-concentration unsaturated aldehyde solution.