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Multifunctional hydrotropes
H3i - Birmingham, 8 March 2016Dr. Sorel Muresan, Section Manager Cleaning EMEIA
• What is a multifunctional hydrotrope?
• Typical hydrotropes in AkzoNobel’s Cleaning portfolio
• Formulations and performance data
• Choosing the right hydrotrope for your application
• Q&A
Outlook
2Surface Chemistry EMEIA | Hydrotropes
Compounds that increase the solubility of a surfactant in a formulation
Referred to as “multifunctional hydrotropes” or “cosurfactants” when theyprovide additional value to formulations in synergy with the primary surfactant
3Surface Chemistry EMEIA | Hydrotropes
Temperature-induced clouding ofan aqueous solution containing
an alcohol alkoxylate
Reversed by addition ofa hydrotrope
Hydrotropes
Cloud point
Surface Chemistry EMEIA | Hydrotropes
Temperature above which an aqueous solution of a water-soluble surfactant becomesturbid. Cloud points are characteristic of nonionic surfactants.
- usually measured at 1% wt surfactant in water (but also in BDG or in NaCl aq)- increases with increasing number of EO units- decreases with increasing lenght of the hydrophobic chain (and branching)- can be adjusted with hydrotropes (increase) or salts (decrease)
T
4
5% Ethylan 1008X% Dissolvine GL-47-Srest Water
5% Ethylan 100817% Dissolvine GL-47-SY% Ampholak YJH-40rest Water
Surface Chemistry EMEIA | Hydrotropes 5
Cloud point and additives
Rinse with tap water
4
Measure a clean plate
1Soil the plate
2
Pour the cleaning formulation
3Measure after cleaning
5
Surface Chemistry EMEIA | Hydrotropes 6
Non-mechanical cleaningInternal AN test method: ”Black box test”
Typical hydrotropes in AkzoNobel’s Cleaning portfolio
7Surface Chemistry EMEIA | Hydrotropes
Cationic (Quat)Berol R648 NG
AmphotericsAmpholak YJH-40Ampholak XCEAmpholak YCE
Nonionics (Glucosides)AG 6202AG 6206AG 6210
Nonionics (other types)Berol SurfBoost AD15
Classes of functional hydrotropes
8Surface Chemistry EMEIA | Hydrotropes
Hydrotropic power cosurfactants vs SXS
Surface Chemistry EMEIA | Hydrotropes
Amount of hydrotrope, wt.%, as is
Cp,℃
Base formulation for cosurfactant hydrotropic efficacy test:5% Berol 260 + 8% Dissolvine GL-47-S + X% hydrotrope
9
Berol R648 NG upgrades theperformance of your formulation
• Excellent solubilization power and compatibility with othersurfactants and cleaning ingredients• Berol R648 NG is a multi-functional cosurfactant that can be
formulated with a wide range of nonionic and cationic surfactants andchelating agents
• Cost effective solution• Berol R648 NG provides best-in-class performance even at low
concentrations
• Wide range of applications• The unique chemistry of Berol R648 NG enables superior cleaning
performance of your formulations, ranging from household cleaners tothe most demanding industrial degreasers.
10Surface Chemistry EMEIA | Hydrotropes
Cleaning performance upon dilution
Surface Chemistry EMEIA | Hydrotropes 11
Cleaning tests – I&I formulations
12
Formulation 1
Formulation 2
Formulation 3
Formulation 4
Formulation 15.0% Berol 2606.5% SCS (40%)5.0% Dissolvine GL-47-S1.0% Alcoguard 4160Balance water
Formulation 25.0% Berol 2604.5% Berol R648 NG5.0% Dissolvine GL-47-S1.0% Alcoguard 4160Balance water
Formulation 35.0% Berol 2604.5% Berol R648 NG5.0% Dissolvine GL-47-S1.0% Alcoguard 41603.0% PnPBalance water
Formulation 44.0% Berol 2600.5% Ethylan 10054.0% Berol R648 NG5.0% Dissolvine GL-47-S1.0% Alcoguard 4160Balance water
Mechanical cleaningIKW tests using the Sheen scrubber
The unique chemistry of Berol R648 NG enables superiorcleaning performance at low concentrations
Surface Chemistry EMEIA | Hydrotropes
Ampholaks - amphoterics
Surface Chemistry EMEIA | Hydrotropes
Product Description Solid Properties
Ampholak YJH-40 Octyliminodipropionate 40% High conc. formulationLow foamingSoluble in 27% NaOH
Ampholak YCE Complexcocoiminopropionate
30% Corrosion protectionFoam boosterSoluble in 30% NaOH
Ampholak XCE Complexcocoiminodiglycinate
40% Dispersing propertiesFoam boosterSoluble in 20% NaOH
13
Surface Chemistry EMEIA | Hydrotropes 14
0
40
80
120
160
7% Ampholak YCE 6% Ampholak YJH-40 6% 4% 4%
Cosurfactants foaming
5% Berol 260X% Hydrotrope to reach a cloud point of 40°C6% TKPP4% Metasilicaterest Water
Foam height (immediately), mm
Temp: 20oCConc: 5 g/lWater hardness: 4odH
7% 6% 6% 4% 4%Ampholak Ampholak AG 6206 Berol 522 Berol R648 NGYCE YJH-40
Product Description Solid PropertiesAG 6202 Octylglucoside 65% Low foaming
DispersingWettingSoluble in 26% NaOH
AG 6206 Hexylglucoside 75% Low foamingDispersingSoluble in 50% NaOH
AG 6210 C8-C10 alkylglucoside 61% High foamingDispersingWettingSoluble in 50% NaOH
Surface Chemistry EMEIA | Hydrotropes 15
AGs - Alkyl Glucosides
Cosurfactants solubility in NaOH solution
0 20 40 60
Ampholak YJH-40
Ampholak YCE
Ampholak XCE
AG 6210
AG 6206
AG 6202
NaOH conc, %
5% product in water+ X% NaOH
Surface Chemistry EMEIA | Hydrotropes 16
AkzoNobel’s AG products comparedwith a typical APG
17Surface Chemistry EMEIA | Hydrotropes
AG 6202 AG 6206 AG 6210 TypicalAPG
Active content, % 65 75 61 70
Viscosity at 20oC, cps 265 775 350 4 800
Surface tension, dynes/cm25oC 0.1%
33 34 27 31
Contact angle 25oC 1%,after 1 min
36 34 33 33
Foam height, mm50oC 0.5%
8 0 100 150
18Surface Chemistry EMEIA | Hydrotropes
Berol SurfBoost AD15
An effective, readily and anaerobically
biodegradable, not classified cosurfactant
Readily biodegradable, OECD 301B
Anaerobically biodegradabale, OECD 311
EC50 at 48h >100mg/l, acute toxicity to daphnia magna, OECD 202
EC50 at 72h >100mg/l, acute toxicity to algae, OECD 201
Water based, without using VOC
Not classified according to GHS/CLP
19
Cleaning tests – Household formulationsNon-mechanical cleaning of ceramic tiles soiled with “kitchen soil”(20% Lambert soil, 50% corn oil, 30% water)
0
20
40
60
80
100
Formulation 1 Formulation 2 Commercialproduct 1
Commercialproduct 2
%So
ilre
mov
ed
Formulation 11% Berol 2602% Berol SurfBoost AD150.5% Dissolvine GL-47-SBalance waterpH ~11
Formulation 23% Berol 1851% Berol SurfBoost AD150.5% CitrateBalance waterpH ~8
Commercial product 1<5% nonionic surfactantspH ~11
Commercial product 25-15% nonionic surfactantspH ~11
Formulations 1 and 2 provides better or equal cleaning performance as the two references.
Notclassified
Surface Chemistry EMEIA | Hydrotropes
Notclassified
Choosing the right cosurfactant for your application
20Surface Chemistry EMEIA | Hydrotropes
Choice of multifunctional hydrotrope
High content ofchelating agent
Corrosion protection
Not classified
Good degreasing
21Surface Chemistry EMEIA | Hydrotropes
Choice of multifunctional hydrotrope
AG 6206Ampholak YJH-40
Ampholak YCEAmpholak XCE
Ampholak YCE
Ampholak YJH-40AG 6206
Ampholak YJH-40Berol SurfBoost AD15
AG 6202AG 6206AG 6210
Berol R648 NG
High content ofchelating agent
Corrosion protection
Not classified
Good degreasing
22Surface Chemistry EMEIA | Hydrotropes
Thank you for your attention
Please visit us on stand 211
23Surface Chemistry EMEIA - Cleaning
Legal disclaimer
24Surface Chemistry EMEIA | Hydrotropes