Higher secondary alcohol alkoxylate precursor, higher secondary alcohol alkoxylate adduct and higher secondary alkyl ether sulfate ester salt, and methods for producing these

Patent metadata

Field	Value
Publication number	US-12570592-B2
Application number	US-202017753461-A
Country	US
Kind code	B2
Filing date	Sep 8, 2020
Priority date	Sep 9, 2019
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

A higher secondary alcohol alkoxylate precursor is obtained by reacting a long-chain olefin with a (poly)alkylene glycol. The precursor has a content of (poly)alkylene glycol of 0.2% by mass or lower with respect to the total mass of the higher secondary alcohol alkoxylate; a higher secondary alcohol alkoxylate adduct which is an alkylene oxide adduct of the higher secondary alcohol alkoxylate precursor; and a higher secondary alkyl ether sulfate ester salt which is a sulfated product of the higher secondary alcohol alkoxylate precursor or the higher secondary alcohol alkoxylate adduct.

First claim

The invention claimed is:

1 . A method for producing a higher secondary alcohol alkoxylate, the method comprising the steps of:
adding a (poly) alkylene glycol to a double bond of a long-chain olefin having 8 to 30 carbon atoms in the presence of a catalyst to thereby obtain a higher secondary alcohol alkoxylate; and bringing a solvent into contact with the higher secondary alcohol alkoxylate to thereby wash the higher secondary alcohol alkoxylate to reach a content of (poly) alkylene glycol of 0.001% by mass or higher and 0.2% by mass or lower with respect to a total mass of the higher secondary alcohol alkoxylate, wherein the adding is carried out under a solvent-free condition.

2 . The method according to claim 1 , wherein the solvent is a solvent containing water.

3 . A method for producing a higher secondary alcohol alkoxylate adduct, the method comprising further adding an alkylene oxide to the higher secondary alcohol alkoxylate precursor obtained by the method according to claim 1 in the presence of a catalyst.

4 . A method for producing a higher secondary alkyl ether sulfate ester salt, the method comprising sulfating the higher secondary alcohol alkoxylate precursor obtained by the method according to claim 1 , and further neutralizing the resultant.

5 . A method for producing a higher secondary alkyl ether sulfate ester salt, the method comprising sulfating the higher secondary alcohol alkoxylate adduct obtained by the method according to claim 3 , further neutralizing the resultant.

6 . The method according to claim 1 , wherein the higher secondary alcohol alkoxylate is washed to reach the content of (poly) alkylene glycol of 0.005% by mass or higher and 0.2% by mass or lower with respect to the total mass of the higher secondary alcohol alkoxylate.

7 . The method according to claim 1 , wherein the long-chain olefin comprises an olefin isomer mixture having 12 to 18 carbon atoms.

8 . The method according to claim 7 , wherein the olefin isomer mixture has 12, 14, 16, or 18 carbon atoms.

9 . A method for producing a higher secondary alcohol alkoxylate, the method comprising the steps of:
adding a (poly) alkylene glycol to a double bond of a long- chain olefin having 8 to 30 carbon atoms in the presence of a catalyst only, to thereby obtain a higher secondary alcohol alkoxylate; and bringing a solvent into contact with the higher secondary alcohol alkoxylate to thereby wash the higher secondary alcohol alkoxylate to reach a content of (poly) alkylene glycol of 0.001% by mass or higher and 0.2% by mass or lower with respect to a total mass of the higher secondary alcohol alkoxylate.

10 . A method for producing a higher secondary alcohol alkoxylate, the method comprising the steps of:
reacting a (poly) alkylene glycol with a long-chain olefin having 8 to 30 carbon atoms in the presence of a catalyst in a reactor to thereby obtain a higher secondary alcohol alkoxylate, wherein an initial reaction mixture charged to the reactor consists essentially of the long-chain olefin, the (poly) alkylene glycol, and the catalyst; and bringing a solvent into contact with the higher secondary alcohol alkoxylate to thereby wash the higher secondary alcohol alkoxylate to reach a content of (poly) alkylene glycol of 0.001% by mass or higher and 0.2% by mass or lower with respect to a total mass of the higher secondary alcohol alkoxylate.

Assignees

• Nippon Catalytic Chem Ind

Inventors

• Okada Atsushi
• Inaoka Toru

Classifications

• C11D1/83

  Mixtures of non-ionic with anionic compounds · CPC title

• C08G65/3344

  containing oxygen in addition to sulfur · CPC title

• C08G65/329

  with organic compounds · CPC title

• C08G65/2609

  containing aliphatic hydroxyl groups · CPC title

• C07C303/24

  of esters of sulfuric acids · CPC title