FILM ENHANCER AND RHEOLOGY MODIFIER FOR PAINTS AND COATINGS

PAGE 1 MATERIAL CHANGE FOR GOOD

WHO ARE WE AND WHAT DO WE DO?

CelluComp is a dynamic material science company based in Scotland that develops high performance products based on sustainable resources. At CelluComp we believe in the possibilities offered by materials produced from non-hydrocarbon feed-stocks. Several years of R&D has led to the development of a range of high performance additives suitable for use in a variety of end applications.

Our vision is to promote ‘Material Change for Good’ and our principle activity is the development and commercialisation of Curran ®, a material produced by extraction of nano-cellulose fibres from root vegetables such as carrots and sugar beet.

In March of 2015, CelluComp completed the construction of its state of the art manufacturing facility based in Glenrothes, Scotland. From that point on we began producing Curran® for the purpose of commercialisation and we are now shipping product to customers and prospects around the globe.

NANO-CELLULOSE FIBRES FROM ROOT VEGETABLES

CelluComp has invented and has a patent-pending proprietary process that is unique in allowing the properties of cellulose nano-fibres to be fully utilised. The platelet structure of Curran ® fibres makes them effective rheology modifiers in end uses such as paints and coatings, concrete, drilling fluids, food, cosmetics and personal care and home care products. The same platelet structure provides impressive reinforcing effects in paints and coatings, paper, concrete and some personal care products. Curran ® is compatible in a variety of common water based polymer systems.

A SUSTAINABLE AND GREEN ALTERNATIVE

Curran ® is manufactured from waste streams produced by the food processing industry. Common raw materials are carrots or sugar beet, and because only materials otherwise discarded by the food industry are used, it does not compete with food crops for scarce land. CelluComp is working with major players in the food processing industry to optimise use of vegetable waste. Compared to other materials used as additives Curran ® has a low carbon footprint as a result of low energy consumption during production.

PAGE 2 MATERIAL CHANGE FOR GOOD

PAGE 3 MATERIAL CHANGE FOR GOOD

CURRAN ® CV5000CelluComp’s Curran ® CV5000 additive provides a unique set of properties for the coating industry. Based on novel fibre technology and derived from root crops, Curran ® is a green multi-functional additive for film enhancement and rheology modification. High technical performance combined with the renewable nature of Curran ® helps solve some of the major challenges faced by the paint & coating industry today.

Curran ® can be used to provide outstanding enhancement to both application performance, drying properties and final film quality. Designed for use in a range of water based coatings, Curran ® is safe and easy to use. Careful formulating with Curran ® can lead to simplified formulations and resulting cost savings. Curran ® c an increase coating hardness, flexibility and crack resistance without comprising the water or corrosion resistance.

CURRAN ® SUPPLY FORMS

CURRAN ® PASTE/SLURRY

Curran ® in its primary state is a thick paste, with approx. 1-2% solid matter and 98-99% water. Providing a pumpable slurry. Both paste and slurry forms are readily mixed into water based coating formulations, resins, cosmetics and other aqueous liquids.

CURRAN ® POWDER

Curran ® powder is produced from the slurry material by removal of water. Powders are free-flowing and dust free, with a solids level of approx. 18-22%. Powders are the most popular form foruse in paints & coatings and are convenient fortransport, storage and use. Dispersion into aqueoussystems is readily achieved using conventionalindustry mixing equipment.

Product Purpose Forms ColourPowder

S.G. (g/cm 3)

% Non-Volatile

(Powder/Paste)

pH Viscosity (cP)*

Curran® CV5000

For Film enhancement & Rheology modification

Powder/paste te 1.0718 - 22%

1 - 2 % 5 - 6 1200 –

1600**

*=1% Curran ® solids in water/ Brookfield RV: spindle 3: 10rpm

**dependent on shear

PAGE 4 MATERIAL CHANGE FOR GOOD

FEATURE BENEFIT

FILM PROPERTIES

Drying behaviour Improves through drying and Increases open time

Film reinforcing e ect Increased film hardness. Good flexibility retention

Film reinforcing e ect Increased crack resistance during curing from 4°C to 60°C.

Requires less coalescent Improved wet scrub resistance

Good water resistance Broad application possibilities including moisture resistant decorative paints or industrial coatings

Good colour performance Improved touch up colour matching and opacity.

RHEOLOGY

Pseudoplastic Highly efficient shear thinning rheology modifier

High efficiency Low loadings required if used for rheology modification

APPLICATION

High viscosity at low-shear Reduced spatter; Good sag control

Reduced dirt pick up

E ective across a wide pH range Hydration possible in pH range 2-12; Formulating flexibility

GENERAL

Zero VOC Reduced VOC coatings

Based on waste streams of renewable raw materials (carrots/sugarbeet) Increased eco-friendly coating formulations

Unique fibre technology Efficient viscosity modification

APE free Environmentally friendly coatings

Non-toxic Safe and easy to handle

Very low dust, non-wood source fibre No workplace environmental dust problems & easy incorporation

PAINTS & COATINGS FEATURES/BENEFITS SUMMARY

PAGE 5 MATERIAL CHANGE FOR GOOD

MUD-CRACKINGAddition of Curran ® reduces the tendency for mud-cracking during drying of wall paint emulsion systems at both high and low tempertures. In the example below VAE coating samples were tested by applying onto plasterboard substrates cooled to 4ºC, and then dried at 4ºC with constant airflow over the samples.

Crack resistance was examined at varying levels of Curran®. An addition of 0.2% (w/w) based on active content was found to provide improved crack resistance. With this improvement, it was found that 90% of the NX795 (Texanol) could be removed from the formulation.

CURRAN ® AS FILM ENHANCER

SCRUB RESISTANCEUsing a standard wall paint emulsion at varying PVCs, samples were tested to EN ISO 11998 for film loss under scrub resistance, each panel having been cured for 28 days at 21°C prior to testing. In each case the formulation using Curran ® , outperformed the same formulation when based on a standard HEC.

Standard Formula(Full NX795)

Modified with 0.2% Curran®(90% Less NX795)

Standard Formula(90% Less NX795)

PAGE 6 MATERIAL CHANGE FOR GOOD

CURRAN ® IN WATERCurran ® is an effective rheology modifier in water based systems. The graph shows rheology profiles for Curran ® in water, illustrating its e effectiveness over a wide range of viscosities and strong shear-thinning behaviour.

®

CURRAN ® IN WALL PAINT EMULSION SYSTEMSCurran ® acts as a Green rheology modifier in water based paint systems. The graph illustrates Currans strong shear-thinning behaviour, which contributes to excellent sag and anti-settling performance.

CURRAN ® WITH ASSOCIATIVE THICKENERSCurran ® is an e ective thickener in water-based coatings. However, the graph below demonstrates that Curran ® , when mixed with most associative thickeners, produces an exponential thickening e ect – especially when compared to the mix of leadingHEC’s and associative thickeners. This synergy with Curran ® allows for cost-e ective formulating and formulating flexibility.

CURRAN ® AS RHEOLOGY MODIFIER

RHEOLOGY CURVES FOR CURRAN ® IN WATER

1% Curran ® powder in water/ Brookfield RV: spindle 3.

0.5% Curran solids in Architectural Acrylic coating

0.5% Curran solids in Architectural Acrylic coating

0

2000

4000

6000

8000

10000

12000

14000

0 20 40 60 80 100 120

Vis

cosi

ty (c

Ps)

B rookfield rpm

C V5000

0

5000

10000

15000

20000

0.2 0.3 0.4 0. 5

Visc

osity

(cp

s) a

t 10

rpm

Concentration of associative thickener (% )

Thick ener

Curran & Acrysol RM 55

Market Leading HEC & Acrysol RM 55

Curran & Tego Viscoplus 3010

RHEOLOGY CURVES FOR CURRAN ® IN ACRYLIC SYSTEM

CURRAN ® SYNERGY WITH ASSOCIATIVE THICKENERS

PAGE 7 MATERIAL CHANGE FOR GOOD

0

2

4

6

8

10

12

14

1 3 5 7 9

pH

Time (W eeks)

pH2

pH5

pH9

pH12

Control

0

500

1000

1500

2000

2500

3000

3500

4000

4500

0 1 2 3 4 5 6 7 8 9 10

Visc

osity

(Cps

) at

10rp

m

pH2

pH5

pH9

pH12

Control

Time (Weeks )

CURRAN® pH STABILITYThe viscosity of Curran® in water based systems is stable over a wide range of pH as shown by the data in the graphs. This can increase formulation flexibility, reduce cost and reduce coating manufacturing time.

CURRAN® pH STABILITY

VISCOSITY VS. PH LEVELS OVER 9 WEEKS

MATERIAL CHANGE FOR GOOD PAGE 9

INCORPORATION INSTRUCTIONS:

Although Curran® can be used as a rheology modifier, it is important to understand that Curran® is not a simple “drop in” product. Curran® requires high sheer to re-disperse and rehydrate and must be incorporated differently to standard cellulose thickeners. Below is a recommended procedure for the successful incorporation of Curran® Powder.

1. Make up your Premix.

2. Mix to homogeneity at c.1000rpm*which should take 1-2 minutes.

3. Whilst stirring, add required amountof Curran®.

4. Increase speed of mixer to c.3000rpm*to begin dispersion and hydrationof the Curran®.

5. After 2 minutes add pigments and begindispersion/grind phase.

6. Continue mixing at c.3000rpm* until thepigments have fully dispersed. During thistime the Curran® will fully disperse andhydrate. This phase should run no lessthan 15 minutes.

7. When fully dispersed continue withlet-down phase.

* These speeds are relevant to lab dispermat using a 4cm saw tooth blade and 9cm diameter vessel.

MATERIAL CHANGE FOR GOOD PAGE 10

EXAMPLE FORMULATIONS

AN EXAMPLE OF A CURRAN DECRATIVE FORMULATION WITH A HIGH PVC BUT GOOD SCRUB AND CRACK RESISTANCE

MATERIAL SG NVC WEIGHT

Water

BYK 154

BYK 1785

ACTICIDE FIN

TEXANOL

CURRAN

mix 1-2mins at 300rpm

TITANIUM DIOXIDE RC 813

SATINTONE 5 HB

SNOWCAL 70

mix 15 mins at 300rpm

PRIMAL AC337

BYK 1785

ACRYSOL RM 55

mix 5 mins at 3000rpm

ROPAQUE ULTRA

1.0001.1601.000

1.046

0.950

1.058

4.100

2.630

2.700

1.100

1.0601.000

1.0601.000

0.000

42.0030.00

0.00

0.00

16.43

100.00100.00

100.00

30.00

45.5030.0030.00

Total

Volume

SG

NVC

1000.000692.724

1.44451.74

363.086.00

2.00

1.404.00

36.52

80.00

80.00

295.00

40.0088.00

1.00

3.00

(g)

MATERIAL CHANGE FOR GOOD

UKNeoTech Specality Chemicals LtdSouthlandsScarsdale Ridge, BardseyLeeds LAS17 9BPUKTel: +44 1937 573542richard @neotechsc.com

GERMANYKRAHN CHEMIE GmbHGrimm 10 20457 Hamburg GERMANYTel: +49 40 32092 277b.camp@krahn.de

NETHERLANDSKeyser & MackayLeidsegracht 191017 NA Amsterdam NEDERLANDTel: +31 20 626 33 23n.visscher @ keymac.com

POLANDKrahn Chemie Polska Sp. Z.o.o Ul. Bystra 7 61-366 Poznan POLANDTel: +48 61 87320 10 p.miernik @ krahn.pl

FRANCEKeyser & MackayImmeuble Le Véga30, Rue Mozart92110 CLICHY LA GARENNE FRANCETel: +331 552 30 363d.francois @keymac.com

SPAIN & PORTUGAL Corquimia Industrial S.L Avda de Cornella 142, 3 4 08950 Esplugues de Llobregat BarcelonaSPAINTel: +34 (0) 934 70 65 88i.fernandez @corquimia.com

MIDDLE EASTDesbro Middle East Limited BK 03-04Jebel Ali Free Zone (South) DubaiUNITED ARAB EMIRATESTel: +971 (488) 60901jose @desbrome.com

DISTRIBUTORS

Co-funded by the Eco-innovation Initiative of the European Union

CELLUCOMP

Unit 3, West Dock, Harbour Place, Burntisland, Fife, UK KY3 9DW

Tel: +44 15 9287 0335

enquiries @ cellucomp.com

www.cellucomp.com

Contacts

International Business Manager Alain Denechaud

Customer Relations Manager Laura Elliot