Alkylbenzenesulfonate surfactants
US6306817A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Jan 7, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D1/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A surfactant composition comprising: PA1 alkylarylsulfonate surfactant system comprising at least two isomers of the alkylarylsulfonate surfactant of the formula: ##STR1## PA1 wherein: PA2 L is an acyclic aliphatic hydrocarbyl of from 6 to 18 carbon atoms in total; PA2 M is a cation or cation mixture and q is the valence thereof; PA2 and b are numbers selected such that said composition is electroneutral; PA2 R' is selected from H and C.sub.1 to C.sub.3 alkyl; PA2 R" is selected from H and C.sub.1 to C.sub.3 alkyl; PA2 R'" is selected from H and C.sub.1 to C.sub.3 alkyl; any of R' and R" is nonterminally attached to L and at least one of R' and R" is C.sub.1 to C.sub.3 alkyl; and PA2 A is aryl; and wherein: PA2 said alkylarylsulfonate surfactant system comprises two or more isomers with respect to positions of attachment of R', R" and A to L; PA2 in at least about 60% of said composition, A is attached to L in the position which is selected from positions alpha- and beta- to either of the two terminal carbon atoms thereof; and wherein further said alkylarylsulfonate surfactant system has at least one (preferably both) of the following properties: PA2 said alkylarylsulfonate surfact…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.