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:
May. 11, 1999
Filed:
Aug. 07, 1997
Applicant:
Inventors:
Naoki Inui, Nara, JP;
Taketoshi Kikuchi, Osaka, JP;
Kanako Fukuda, Osaka, JP;
Takashi Sanada, Chiba, JP;
Assignee:
Sumitomo Chemical Co., Ltd, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
25240022 ; 25240023 ; 549 10 ; 549 12 ; 558 74 ; 558 83 ; 558 97 ;
Abstract
A five-coordinate phosphorous compound which is useful as an stabilizer for organic materials and represented by the formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 independently represent hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group; R.sup.3 represents hydrogen atom or an alkyl group; X represents a direct bond, a sulfur atom or a group represented by --CHR.sup.6 -- wherein R.sup.6 represents hydrogen atom, an alkyl group or a cycloalkyl group, and a process for producing the compound (I) are provided.