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:
Jun. 30, 2020
Filed:
Jan. 16, 2018
Kuraray Co., Ltd., Kurashiki-shi, JP;
Hokko Chemical Industry Co., Ltd., Chuo-ku, JP;
Eriko Honda, Okayama, JP;
Tatsuya Yoshikawa, Kamisu, JP;
Tomoaki Tsuji, Kamisu, JP;
Hitoshi Koizumi, Hiratsuka, JP;
Kyoko Sugita, Atsugi, JP;
Nobumichi Kumamoto, Atsugi, JP;
KURARAY CO., LTD., Kurashiki-shi, JP;
HOKKO CHEMICAL INDUSTRY CO., LTD., Chuo-ku, JP;
Abstract
Provided are a water-soluble triarylphosphine for a palladium catalyst, which has high selectivity in a telomerization reaction and can be recovered with efficiency, an ammonium salt thereof, and a method for efficiently producing the same. Specifically, provided are bis(6-methyl-3-sulphophenyl)phenylphosphine; a bis(6-methyl-3-sulphonatopheyl)phenylphosphine diammonium salt obtained by reacting the phosphine with a tertiary amine having a total of 3 to 27 carbon atoms in groups bonded to one nitrogen atom; and a method for producing the same.