INFLUENCE OF THE HLB OF A NONIONIC ADDITIVE ON THE DETERGENCY OF ALKALINE CLEANERS CONTAINING AN ANIONIC SURFACTANT
Abstract
The resultant of the combined properties of penetrability, peptization, and wetting, as judged by asphalt detergency, shows synergism on the addition of certain nonionics to medium pHALKALINE CLEANING SOLUTIONS (capH12) containing an anionic surfactant. Nonionic additives with HLB values of 13.2 to 17.1 imparted good to excellent asphalt detergency to solutions containing sodium dodecyl sulphate (SDS) or alkyl (straight chain) aryl sulphonate (SKBS); and nonionics with HLB values of 13.4 to 18.18 gave fair to excellent asphalt removal in cleaners containing sodium oleate. In all three systems, asphalt detergency decreased with further increase in nonionic HLB to 19.05. The anionic with the highest HLB (SDS) formed the most synergistic mixtures in the 13.2 to 17.1 nonionic HLB range. Increasing HLB of the nonionic additives correlates in general with increasing surface tension of their 0.39% solutions; and the effectiveness of the nonionics in improving asphalt detergency increases with increasing values of nonionic surface tension until a nonionic HLB of 17.1 is reached. A number of synergistic anionic-nonionic surfactant combinations were developed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 10, 1963
- Accession Number
- AD0295586
Entities
People
- A. Mankowich