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US 11,634,642 B2Granted
Biodegradable surfactant
AssigneeBASF SE
InventorsRoman Benedikt Raether, Juergen Tropsch, Christian Bittner, Thomas Wesley Holcombe, Michael Bernhard Schick
Life of this patent
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Abstract
The present disclosure is related to a surfactant comprising at least one C8 to C30 branched alkanol alkoxylate, a process for the preparation of the surfactant, an article comprising the surfactant, and a use of the surfactant. Also disclosed are readily biodegradable surfactants obtained from branched aliphatic alcohols and including a polyethylene oxide block.
Claims17
A surfactant of formula (I)
- R1—O—(—CH2—CH2—O)n—(—CH2—CH(R2)—O)m—(—CH2—CH2—O)p—H (I)
- wherein
- R1 is selected from the group consisting of 2-dodecyl, 2-ethylhexyl, 2-propylheptyl, iso-tridecyl, 2-tetradecyl, 2-hexadecyl, 7-ethyl-3-decyl, 3-methyl-6-ethyl-2-nonyl, 2-hexadecyl, 2-octadecyl, 3-nonadecyl, 3-methyl-2-octadecyl, 3-methyl-2-hexadecyl, 3-heptadecyl, iso-decyl, iso-undecyl, iso-dodecyl, 2-butyloctyl, 2-pentylnonyl and 2-hexyldecyl,
- R2 stands for methyl,
- n is in the range of 4 to 6,
- m is in the range of 5 to 20, and
- p is in the range of 1 to 25;
- and
- wherein the ratio n/m is in the range of 0.05 to 3.0 and the ratio p/m is in the range of greater than 0.0 to 5.0.
6 more elements
A surfactant of formula (Ia)
- R3—O—(—CH2—CH2—O)q—(—CH2—CH(R4)—O)r—H (Ia)
- wherein
- R3 is iso-tridecyl,
- R4 stands for methyl,
- q is in the range of 4 to 6, and
- r is in the range of 3 to 35.
3 more elements
Dependencies are inferred from the claim text.