Download - Multifunctional hydrotropes

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


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


Non-mechanical cleaningInternal AN test method: ”Black box test”

Typical hydrotropes in AkzoNobel’s Cleaning portfolio


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


Hydrotropic power cosurfactants vs SXS


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.


Cleaning performance upon dilution


Cleaning tests – I&I formulations

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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


Ampholaks - amphoterics


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

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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


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


AkzoNobel’s AG products comparedwith a typical APG


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


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

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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


Notclassified

Choosing the right cosurfactant for your application


Choice of multifunctional hydrotrope

High content ofchelating agent

Corrosion protection

Not classified

Good degreasing


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


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23Surface Chemistry EMEIA - Cleaning

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