Demande de catalogue

Cellulosic Specialties
Bermocoll EBMs Ethyl methyl hydroxyethyl cellulose EUROCOAT 2010

November 2010

Bermocoll makes a difference

Bermocoll is used as: · thickener · stabilizer · water retarding agent in water borne paint

Bermocoll in latex paint

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Bermocoll EBMs
Bermocoll EBMs are used in · flat paint · satin paint · semi-gloss paint · chemical plaster

Bermocoll in latex paint 2010

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BERMOCOLL EBM Ethyl methyl hydroxyethyl cellulose
OH OH H2C CH 2 O CH 2 H2C HO O O O H 2C CH 2 O CH 2 H 3C H2 C OH O CH 2 H 2C OH CH 3 H2C CH 2 O CH 2 H 3C H3C O O OH H2C OH O O O O H 2C O H2 C CH 2 H3C CH 2 OH O HO OH H 2C O H 2C HO O O H 2C O O H 2C O O O CH 2 H 2C OH O CH 2 OH H2 C O CH 2 O CH 2 OH HO O O H 2C O H2C CH 2 O H2 C O H2C CH 2 CH3 H 2C CH 2 O CH 2 OH

H2C

Cellulosic SpecialtiesBusiness Unit | Title

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Bermocoll EBMs range
Physical data
Appearance Particle size Water content Salt content pH (1% solution) Whitish powder 98%<500 m Max 4% Max 6% Neutral

Viscosity at 20°C (Brookfield LV) 1% solution
Bermocoll EBM 1000 Bermocoll EBM 3000 Bermocoll EBM 5500 Bermocoll EBM 8000 500 ­ 800 mPa.s 2000 ­ 3000 mPa.s 5000 ­ 6500 mPa.s 7000 ­ 9000 mPa.s

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Main characteristics of Bermocoll EBMs
Bermocoll EBM: · combines the properties of HEC and HPMC · has excellent resistance against enzymatic attack · is low foaming · gives excellent storage stability · gives good colour acceptance

Bermocoll in latex paint

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Resistance against enzymatic attack
OH OH O O O O O O O OH HO O O O OH HO OH OH O HO O O O O O O O O OH O O O O OH O O O OH O O O OH

· Cellulase enzymes attack cellulose chains at the O bridge between two anhydroglucoses

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OH OH HO O O O O O O OH O O O O O O OH O O O O O HO OH O O O O O O O O O OH O O OH O O O O O O OH O

· Placing the substituents in protective positions makes the attack impossible

OH

Bermocoll in latex paint

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Enzymatic resistance: Bermocoll EBM vs EBS vs E
100

Bermocoll EBM
90

Remaining viscosity (%)

Bermocoll EBS
80

70

Bermocoll E
60

50

1% aqueous. solution, 20°C, pH 7

40 0 10 20 30 40 50 60

Time (min)
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Enzymatic resistance: Bermocoll EBM vs Biost HEC vs MHPC

· Viscosimetric determination of the resistance to enzymatic degradation of cellulose derivatives, at 20°C. · BERMOCOLL EBM has excellent enzymatic resistance.
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Foaming test according to the "Vindan" method
· A graduated cylinder containing 200 ml of 0.1% polymer solutions is rotated at a specific speed, 40 rpm for 60 seconds. · Then the foam height is measured immediately and after varying times.

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Foaming test Bermocoll EBM vs HEC and HMPC

· Bermocoll EBMs show an excellent performance in Vindan foaming test
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Color acceptance Bermocoll EBM vs Biost HEC vs MHPC

· Comparison in a PVC 60 paint with 0.4% addition of different cellulose ethers · Bermocoll EBM shows excellent color acceptance
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Scrub resistance Bermocoll EBM vs Biost HEC vs MHPC

· The test is performed with abrasive media. · The number of cycles is that performed to remove the paint from the shim.
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Cloud point Bermocoll EBM vs EBS
Viscosity, mPa·s (cP) pH7
10,000 3,000 1,000 300 100 30 10 30 86 40 104 50 122 60 140 70 158 80 176 90 194 Temp, °C Temp, °F EBS Flocc. temp. EBM

· Bermocoll EBM has a very high cloud point, linked also to the storage stability of the finished product
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