Abstracts: Detergents and Cleansers Session

New Systems and Delivery Forms

09:00 – 09:30 | Friday, Hall 3
Co-granulates: A New Tool in Powder Formulation Technology
EN | Dr. Sascha Sansonetti
Incorporating multiple enzymes in powder detergent formulations is a well-established practice. With currently available technology, each enzyme activity is isolated in its own unique granulate and mixed together to constitute a multi-enzyme blend. However, this may result in sub-optimal distribution of the enzymes in the powder detergent, where one scoopful of product may not result in equal quantities of the individual enzyme activity, thereby limiting optimum detergent performance.
A co-granulate contains several enzymes built into the same granulate, which results in a multi-enzyme format with equally distributed components. The benefits of using such technologies in powder detergent products could include lower dosage per ton of detergent produced, improved performance consistency and improved quality across end-products and production batches. Further benefits can be utilized due to the easy handling for manufacturers with only one granulate, easier dosing, easier handling (lower product and inventory volume), decreased capital investment and decreased cost of freight & handling. Co-granulates can also enable detergent manufacturers to further increase detergent product concentration levels.
09:30 – 10:00 | Friday, Hall 3
Cleaning with Supercritical CO2:
A Green Alternative for Chlorinated Toxic Solvents in Industrial and Dry Cleaning

EN | Yves Duccini¹, Olivia Garaix²
(¹ SEPPIC, Puteaux, France; ² DFD, Le Bourget-du-Lac, France)
To clean metallic parts such as screws, bolts, nuts in the mechanical industries ethylene trichloride is widely used. This solvent is also used to remove processing oils and greases from protective gloves, etc.
Ethylene trichloride is flammable and toxic by inhalation. This product is forbiden since March 1st 2016.
This ban created a big disorder in mechanical engineering industries because no alternative solution is satisfactory. The urgency is crucial because if no solution is found, some companies will be forced to close.
The parts are normally soiled with lubricating and processing oils and greases that are formulations including various hydrophobes but also some hydrophilic molecules such as corrosion inhibitors.
Alternatives are either very expensive in energy (water) or unsure for health (petroleum solvents) and need an explosion proof environment. None of them are environment friendly.
Super critical CO2 is a hydrophobic solvent showing good solubilizing and degreasing properties for oily and fatty species. It is a 100% safe solvent for human and environment, non explosive and non flammable. Most of the used CO2 in a cleaning cycle is recycled.
However supercritical CO2 alone cannot clean 100% of the deposited dirts and spots. In most of the cases, cleaning additives must be used. DFD and SEPPIC worked together to develop green, non toxic and non flammable surfactants that will complement CO2 and achieve cleaning and degreasing results similar to the ones of ethylene trichloride.
This conference will describe the cleaning process with supercritical CO2 and all the trials with various blends of surfactants to ensure good performances on various metallic parts with different oils.
This technology open a door on dry cleaning with l CO2 as an alternative in ethylen tetrachloride used in all clothes dry cleaning shops and which will be banned in the early 2020.
10:00 – 10:30 | Friday, Hall 3
Performance Assessment and Properties of LAS from Renewable Sources
EN | Izaskun Barrio Iribarren¹, Estefanía Álvarez¹, Borja Rodríguez¹,
Javier Peláez¹, Jesús Lázaro¹, Francisco Aguilar², Ignacio López²
(¹ Centro de Investigación de CEPSA, Compañía Española de Petróleo S.A.U., Spain;
With the world population moving towards 9 billion by 2050 and fossil resources dwindling, it is needed to consider other feasible and economics routes for making chemicals.
The EU has declared the bio-based products sector to be a priority area. Bio-based products can make the economy more sustainable and decrease its dependence on crude oil although the use of bio-feedstock’s must be considered today as a complementary source in addition to traditional petro-based chemicals.
Since its launching in the early 60’s Linear Alkylbenzene Sulfonate (LAS) become the workhorse surfactant in household detergents due to its versatility, performance and well-documented safety credentials. Indeed, 3.3 million of tons in 2015 have been produced worldwide which means the most widely used synthetic surfactant in the world. Additionally, the world consumption of surfactants is expected to be increased by 4.5% from 2016 to 2020. Consequently, the rise on the demand as well as the increasing environmental awareness opens market opportunities for the use of alternative non-fossil based feedstocks.
Within this framework, LAS can be manufactured using n-paraffins obtained via deoxygenation of vegetable oils. The type of oil and the reaction mechanism are the key factors influencing the alkyl chain composition. The resulting product made from this route would not have the same homologue distribution than standard LAS.
The aim of the work is to assess the properties and performance of both Linear Alkylbenzene Sulfonates LAS and BioLAS. The studied parameters are physical chemical properties of the surfactant on one side, CMC (Critical micellar concentration) and Kraft Temperature. On the other hand, their performance is also measured in terms of foaming capacity and soil removal efficiency at different temperature and hardness.
In conclusion, BioLAS behaves in a very similar way compared to standard product.
11:00 – 11:30 | Friday, Hall 3
“Get Clean with Alkenes” – Delivering Detergents with High Compaction,
Low Foam and Cold Water Cleaning Using Derivatized Unsaturated Hydrophobes

EN | Steve Block
(Elevance Renewable Sciences, USA)
Cleaning products that are renewable and sustainable are of growing interest in the global economy. This is not only important from the perspective of providing alternatives to petroleum based materials, but also to provide ingredients that allow for energy use reduction. Industry trends driving toward cold water cleaning and increased actives concentrations are at the forefront of current efforts. As such, we have prepared unsaturated detergent range surfactants at lab scale for evaluation of physical properties and fabric cleaning application testing. Through comparisons of these materials with saturated analogues and industry standard C9-15 alcohol ethoxylates, the following improvements, which are widely recognized throughout the industry as key drivers for technological advances, were observed. (1) Lower cloud points that provide the delivery of equivalent or improved stain removal across a variety of soils at neutral pH using 20ºC wash and rinse temperatures. (2) Significant reduction of foam stability, which satisfies the desire for low foam in cleaning applications where foam control contributes to added value of new products. (3) Decreased aqueous viscosity as a function of increasing nonionic surfactant concentration, supporting the formulation of high-actives liquid detergent concentrates improving the overall sustainability profile with reduction of logistics costs and an optimized carbon footprint. (4) Demonstration of a reduced need for hydrotropy by lower-HLB developmental surfactants supporting reduced cost and complexity of formulation. These combined surfactant properties may not only provide improvement opportunities for current liquid detergent formulations, but also provide alternatives for developing and emerging economies currently transitioning from powder detergents.
11:30 – 12:00 | Friday, Hall 3
Impact of the Employed Methodology on the Overall
Perceived Performance of Autodishwash Detergents

EN | Stuart Walker, Dr. Kelly Pemartin Biernath
(McBride, Luxembourg)
Together with laundry detergents, the field of autodishwash (ADW) detergents is highly driven by technical performance and the formulator is continually challenged by changes in the market and also the legislation to maintain or improve product performance. For example phosphate bans, lower wash temperatures, and shorter cycles are current preoccupations.
As well as consumer panel testing, many retailers and consumer organisations rely on third party laboratory testing of ADW products to verify their performance. In ADW the IKW methodology is regarded as the de facto standard test. However, different test institutes interpret the test in different ways and continue to evolve their methods to maintain discrimination between products as new higher performing ingredients become available or new product functionalities are developed.
A detailed comparison has been made between the differing methodologies at a number of test laboratories and the impact these differences have on the choices a formulator must make to attain the required performance level. In addition a correlation between the results obtained at external laboratories and those obtained at consumer tests has been obtained.