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:
Aug. 01, 1989
Filed:
Jun. 07, 1988
Masao Kitano, Yokohama, JP;
Tsunemasa Ueno, Kawasaki, JP;
Kouichi Kojima, Kawasaki, JP;
Yutaka Morimoto, Yokohama, JP;
Nippon Shokubai Kagaku Kogyo Co., Ltd., Osaka, JP;
Abstract
In a method for the production of a dithiodialdehyde represented by the formula II: ##STR1## wherein R.sup.1 and R.sup.2 are independently alkyl group of 1 to 8 carbon atoms, by condensation of an active hydrogen-containing aldehyde represented by the formula I: ##STR2## wherein R.sup.1 and R.sup.2 have the same meanings as defined above, with sulfur monochloride, the improvement which comprises simultaneously supplying said active hydrogen-containing aldehyde and sulfur monochloride to an inactive solvent, or adding said active hydrogen-containing aldehyde to a mixture of said inactive solvent with the sulfur monochloride.