USA. Kao Corporation has been issued the patent number 20170281498 for internal olefin sulfonate composition and a cleansing composition containing the same.

Kao Corporation; "Internal Olefin Sulfonate Composition and Cleansing Composition Containing Same" in Patent Application Approval Process (USPTO 20170281498) 20 October 2017 Investment Weekly News 2017 OCT 28 (VerticalNews) -- By a News Reporter-Staff News Editor at Investment Weekly News -- A patent application by the inventors YOSHIKAWA, Yohei (Wakayama-shi, JP); MITSUDA, Yoshinori (Wakayama-shi, JP); HORI, Hiroshi (Wakayama-shi, JP); NISHIMOTO, Yoshifumi (Wakayama-shi, JP); DOI, Yasuhiro (Kainan-shi, JP), filed on June 16, 2017, was made available online on October 12, 2017, according to news reporting originating from Washington, D.C., by VerticalNews correspondents. This patent application is assigned to Kao Corporation. The following quote was obtained by the news editors from the background information supplied by the inventors: "Anionic surfactants, particularly, alkyl sulfates and alkyl polyoxyalkylene sulfates, are excellent in detergency and foaming power, and thus are widely used as cleansing ingredients for domestic or industrial use. An olefin sulfonate, particularly, an internal olefin sulfonate obtained with an internal olefin having a double bond inside an olefin chain, not at its end, as a raw material, has been reported as one of the anionic surfactants. "Such an internal olefin sulfonate is generally obtained by sulfonating an internal olefin through reactions with a gaseous sulfur trioxide-containing gas, followed by neutralization and then hydrolysis of the resulting sulfonic acid. The internal olefin sulfonate is known to have good biodegradability or the like, but is still insufficient in a basic performance as cleansing agents including foamability and foam quality, compared with general-purpose surfactants such as salts of alkyl polyoxyalkylene sulfuric acid esters. Thus, further improvement in such basic performance has been desired. As more people have concerned the water-saving in recent years, the additional value of foam dissipation property in addition to good foamability, foam quality, foaming speed, and foam durability in the presence of model sebum has also been required for use as active ingredients in laundry detergents, dishwashing detergents, shampoos or the like. "Patent Document 1 discloses a specific internal olefin sulfonic acid for the purposes of the solubilizing ability, penetrating ability, and interfacial tension reducing ability. It discloses that when it is used as a shampoo, it lathers well without friction, and achieves an improved feel. "Patent Document 2 describes a specific internal olefin sulfonate for the purposes of improving detergency, and discloses examples of application to shampoos and the like, and Patent Document 3 also describes an aqueous liquid cleansing agent containing a specific internal olefin sulfonate and having a low cloud point." In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventors' summary information for this patent application: "The present invention provides an internal olefin sulfonate composition comprising (A) an internal olefin sulfonate having 16 carbon atoms and (B) an internal olefin sulfonate having 18 carbon atoms, wherein a mass content ratio (A/B) of component (A) to component (B) is from 75/25 to 90/10, and wherein a mass ratio (hydroxy form/olefin form) of a content of a hydroxy form in the internal olefin sulfonate of the component (A) and the component (B) to a content of an olefin form in the internal olefin sulfonate of the component (A) and the component (B) is from 75/25 to 100/0. "Also, the present invention provides a cleansing composition comprising the aforementioned internal olefin sulfonate composition." URL and more information on this patent application, see: YOSHIKAWA, Yohei; MITSUDA, Yoshinori; HORI, Hiroshi; NISHIMOTO, Yoshifumi; DOI, Yasuhiro. Internal Olefin Sulfonate Composition and Cleansing Composition Containing Same. Filed June 16, 2017 and posted October 12, 2017. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220170281498%22.PGNR.&OS=DN/20170281498&RS=DN/20170281498 Keywords for this news article include: Kao Corporation. Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2017, NewsRx LLC