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:
Apr. 19, 1988
Filed:
Mar. 28, 1986
Applicant:
Inventors:
Kenji Tajima, Kuwana, JP;
Masayuki Takahashi, Tokorozawa, JP;
Kazunori Nishikawa, Matsudo, JP;
Takashi Takeuchi, Urawa, JP;
Assignee:
Adeka Argus Chemical Co., Ltd., Urawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
558 78 ;
Abstract
A process for preparing diaryl pentaerythritol diphosphites by reaction of phosphorous trichloride, pentaerythritol and an alkyl phenol having the formula ##STR1## wherein: R.sub.1 is selected from the group consisting of tertiary alkyl having from about four to about eight carbon atoms and cyclohexyl; and