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:
Mar. 25, 1986
Filed:
Aug. 27, 1984
Yukoh Takahashi, Toyonaka, JP;
Takeo Fujii, Toyonaka, JP;
Masahisa Shionoya, Izumi, JP;
Shinichi Yachigo, Toyonaka, JP;
Tamaki Ishii, Suita, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
There are provided piperidine derivatives having the formula ##STR1## wherein R represents a hydrogen atom or a C.sub.1 -C.sub.3 group, and R.sup.2 and R.sup.3 represent a hydrogen atom or taken together, form ##STR2## There is also provided a method for producing the above compounds which comprises reacting a tricetonamine derivative represented by the formula ##STR3## wherein R has the same meaning as described above, or its salt with sorbitol. The subject piperdine derivatives are useful as stabilizers for preventing the deterioration of polymers by light.