公开(公告)号：WO2022056366A1

公开(公告)日：2022-03-17

申请号：PCT/US2021/050042

申请日：2021-09-13

Applicant: STEPAN COMPANY

Inventor： MURPHY, Dennis S. ,  BUTIKAS, Renata A. ,  WOLFE, Patrick Shane ,  VOLLMER, Matthew V.

IPC: C07C229/08

Abstract: Compositions comprising at least one dialkyl amino acid ester salt as a cationic active are disclosed. The compositions are useful for hair care, as well as in other applications, such as cleaning compositions, fabric softening compositions, and skin care compositions. The dialkyl amino acid ester salts are derived from the esterification reaction of an amino acid having at least two carboxylic acid groups with a fatty alcohol, wherein the amine group of the amino acid is protonated with an acid. The compositions may further include a glyceride component comprising monoglycerides, diglycerides, or a combination thereof.

公开(公告)号：WO2022265998A1

公开(公告)日：2022-12-22

申请号：PCT/US2022/033265

申请日：2022-06-13

Applicant: STEPAN COMPANY ,  VOLLMER, Matthew V. ,  OULMAN, Donald E. ,  BROWN, Aaron ,  SMITH, Dennis ,  GUSTAFSON, Doug ,  APPLEBURY, Terry

Inventor： VOLLMER, Matthew V. ,  OULMAN, Donald E. ,  BROWN, Aaron ,  SMITH, Dennis ,  GUSTAFSON, Doug ,  APPLEBURY, Terry

IPC: C02F1/00 ,  C02F1/72 ,  B01D61/00 ,  C02F1/046 ,  C02F1/048 ,  C02F1/40 ,  C02F1/42 ,  C02F1/66 ,  C02F1/722 ,  C02F1/78 ,  C02F2101/32 ,  C02F2101/366 ,  C02F2103/36

Abstract: A method of degrading 1,4-dioxane in the wastewater produced during the manufacture of alkyl ether sulfates is disclosed. The method includes the steps of (a) mixing from 100 to 10,000 ppm, preferably 1,000 to 4,000 ppm of ozone with the wastewater; (b) introducing H2O2 into the wastewater in an amount of 0.01 to 10, preferably 0.1 to 0.5 molar equivalents of H2O2 to ozone, and (c) mixing the ozone, H2O2, and wastewater to generate hydroxyl radicals reactive with the 1,4-dioxane, without the addition of a metal catalyst. The hydroxyl radicals react with the 1,4-dioxane and degrade it into carbon dioxide, water and/or carbonate. The method is effective to reduce a concentration of 1,4-dioxane in the wastewater from a range of about 10 ppm to about 1000 ppm of dioxane down to less than 5 ppb of 1,4-dioxane after treatment. The method is also effective for removing hydrocarbon species that may be present in the wastewater.

公开(公告)号：EP4211107A1

公开(公告)日：2023-07-19

申请号：EP21867748.2

申请日：2021-09-13

Applicant: Stepan Company

Inventor： MURPHY, Dennis S. ,  BUTIKAS, Renata A. ,  WOLFE, Patrick Shane ,  VOLLMER, Matthew V.

IPC: C07C229/08

公开(公告)号：EP4355693A1

公开(公告)日：2024-04-24

申请号：EP22825604.6

申请日：2022-06-13

Applicant: Stepan Company ,  Vollmer, Matthew V. ,  Oulman, Donald E. ,  Brown, Aaron ,  Smith, Dennis ,  Gustafson, Doug ,  Applebury, Terry

Inventor： VOLLMER, Matthew V. ,  OULMAN, Donald E. ,  BROWN, Aaron ,  SMITH, Dennis ,  GUSTAFSON, Doug ,  APPLEBURY, Terry

IPC: C02F1/00 ,  C02F1/72 ,  B01D61/00

CPC classification number: C02F2101/36620130101 ,  C02F2103/3620130101 ,  C02F1/66 ,  C02F1/722 ,  C02F1/78 ,  C02F1/42 ,  C02F2101/3220130101 ,  C02F1/40 ,  C02F1/048 ,  C02F1/046