HIGH PERFORMING TITANIUM DIOXIDE DISPERSIONS

Metal oxides with a wide band gap, such as titanium dioxide

(TiO2), or with a direct band gap, such as zinc oxide (ZnO),

absorb and reflect UV energy from the sun’s radiation. This

makes them useful as UV filters and as pigments in the

cosmetic industry. Unfortunately, they are also photo-active,

promoting the formation of reactive oxygen species and

catalyzing the decomposition of organic materials. This is not

desired in personal care applications, where the protective

functions of these organic compounds are needed.

Commercial surface modifications have not eliminated this

degradation, so a new means of protection was needed.

L E V E R A G I N G A N E W PAT E N T E D C O AT I N G S Y S T E M A N D P U R E P H O T O S TA B I L I T Y S C I E N C E

Hallstar has developed UV filter dispersions highlighting both the benefits of photo-protected titanium dioxide and an industry leading mineral UV filter aesthetic. Leveraging a patent-protected C3+ coating system consisting of silica moieties (derived primarily from tetraorthosilicate), alkyl groups (derived from triethoxycaprylylsilane) and polydimethylsiloxane

(derived from dimethiconol) with our market leading photostabilizer technology, SolaStay® S1 (ethylhexyl methoxycrylene) and HallBrite® BHB (butyloctyl salicylate), we’ve introduced to the market how mineral UV filters can be easy to work with and also result in nic e feeling, low whitening, high performance sunscreens for customers.

® HallBrite® EZ-FLO TDX Plus HallBrite® EZ-FLO TDX

Competitor A Competitor B Competitor C

Absorbance Spectra of UV Filter Concentrates: 0.001% Active TiO2 Diluted in C12-15 Alkyl Benzoate

1 cm Path Length

Wavelength (nm)

Abs

orba

nce

(Att

enua

tion) 0,9

0,80,70,60,50,40,30,2

0300 400 500 600 700 800 900 1000

0,1

1

Transmittance Spectra of UV Filter Concentrates: 0.001% Active TiO2 Diluted in C12-15 Alkyl Benzoate

1 cm Path Length

Wavelength (nm)

Perc

ent T

rans

mitt

ance

9080706050403020

0300 400 500 600 700 800 900 1000

10

100

TiO2 (23%) TiO2 (40%)

SolaStay® S1

HallBrite® BHB

Polar Solvent

HallBrite® BHB

Protected TiO2Delivery System

Highly DispersedTiO2

Increased SPFResults

Combine withAvobenzone

Broad SpectrumProtection China

Approved

High UVBProtection

EasilyPourable

Highly Stable(45°C)

No ParticlePerception

Minimal Whitening

Patented C3+ Coating(Silica Moieties,

Alkyl Groups,Polydimethylsiloxane)

HallBrite ® EZ-FL O TDX

HallB

rite®

EZ-

FL

O TDX Plus

SolutionHallStar has developed UV filter dispersions highlighting both the benefits of photo-protected Titanium Dioxide and an

industry leading mineral UV filter aesthetic. Leveraging a patent-protected C3+ coating system consisting of Silica moieties

(derived primarily from Tetraorthosilicate), Alkyl groups (derived from Triethoxycaprylylsilane) and Polydimethylsiloxane

(derived from Dimethiconol) with our market leading photostabilizer technology, SolaStay® S1 (Ethylhexyl Methoxycrylene)

and HallBrite® BHB (Butyloctyl Salicylate), we’ve introduced to the market how mineral UV filters can be easy to work with

and also result in nice feeling, low whitening, high performance sunscreens for customers.

Drawdowns of dispersions diluted in C12-15 Alkyl Benzoate.

Drawdowns made using #4 Meyer rods on dark substrates.

The greater whitening effect of competitor products is very

apparent.

HallBrite®

EZ-Flo tDXHallBrite®

EZ-Flo tDX PlusCompetitorProduct A

CompetitorProduct B

introDuCtionMetal oxides with a wide band gap, such as Titanium Dioxide (TiO

2), or with a direct band gap, such as Zinc Oxide

(ZnO), absorb and reflect UV energy from the sun’s radiation. This makes them useful as UV filters and as pigments in

the cosmetic industry. Unfortunately, they are also photo-active, promoting the formation of reactive oxygen species

and catalyzing the decomposition of organic materials. This is not desired in personal care applications, where the

protective functions of these organic compounds are needed. Commercial surface modifications have not eliminated

this degradation, so a new means of protection was needed.

HallBrite® EZ-FLO TDX Plus

HallBrite® EZ-FLO TDX

Competitor A

Competitor B

Competitor C

Wavelenght (nm)

Ab

sorb

an

ce (

Att

en

uati

on

) 1

0,9

0,8

0,7

0,6

0,5

0,4

0,3

0,2

0,1

0

300 400 500 600 700 800 900 1000

Absorbance Spectra of UV Fi l ter Concentrates : 0.001% act ive TiO2

d i luted in C12-15 Alkyl Benzoate - 1 cm Path Length

Wavelenght (nm)

Perc

en

t Tra

nsm

itta

nce

100

90

80

70

60

50

40

30

20

10

0

300 400 500 600 700 800 900 1000

Transmittance Spectra of UV Fi l ter Concentrates : 0.001% act ive TiO2

d i luted in C12-15 Alkyl Benzoate - 1 cm Path Length

HigH PErForming titAnium DioXiDE DiSPErSionSleveraging a new patented coating system and pure photostability science

The HallStar Company - 120 S. Riverside Plaza, Suite 1620 - Chicago, IL 60606 - USA - +1-312-385-4494

hallstar.com

TiO2 (23%) TiO

2 (40%)

SolaStay® S1

HallBrite® BHB

Polar Solvent

HallBrite® BHB

Protected TiO2

Delivery System

Highly DispersedTiO

2

Increased SPFResults

Combine withAvobenzone

Broad SpectrumProtection China

Approved

High UVBProtection

EasilyPourable

Highly Stable(45°C)

No ParticlePerception

Minimal Whitening

Patented C3+ Coating(Silica moieties,

Alkyl groups,Polydimethylsiloxane)

HallBrite ® E

Z-F

LO

TD

X

Hal

lBri

te®

EZ

-FLO

TDX Plus

Wavelength (nm)

Ab

sorb

an

ce (

Att

en

uati

on

)

Perc

en

t Tra

nsm

itta

nce

Wavelength (nm)

1

0,9

0,8

0,7

0,6

0,5

0,4

0,3

0,2

0,1

0

100

90

80

70

60

50

40

30

20

10

0

300 400 500 600 700 800 900 1000 300 400 500 600 700 800 900 1000

Drawdowns of dispersions diluted in C12-15 alkyl benzoate. Drawdowns made using #4 Meyer rods on dark substrates. The greater whitening effect of competitor products is very apparent.

www.hallstar.com © Hallstar, All Rights Reserved. 10/15www.hallstar.com © Hallstar, All Rights Reserved. 10/15

HIGH PERFORMING TITANIUM DIOXIDE DISPERSIONS (continued)

Formula # JZ8-286B JZ8-286C JZ8-286D JZ8-287B JZ8-287C JZ8-287D

Oil Phase Ingredients (%)

C12-C15 alkyl benzoate 30.00 25.00 20.00 30.00 25.00 20.00

HallBrite® EZ-FLO TDX Plus 10.00 15.00 20.00 - - -

HallBrite® EZ-FLO TDX - - - 10.00 15.00 20.00

Cetearyl alcohol 0.50 0.50 0.50 0.50 0.50 0.50

VP/Eicosene copolymer 1.00 1.00 1.00 1.00 1.00 1.00

Potassium cetyl phosphate,

hydrogenated palm glycerides2.00 2.00 2.00 2.00 2.00 2.00

Glyceryl stearate 1.35 1.35 1.35 1.35 1.35 1.35

PEG-100 Stearate 1.00 1.00 1.00 1.00 1.00 1.00

Water Phase Ingredients (%)

Water 48.25 48.25 48.25 48.25 48.25 48.25

Disodium EDTA 0.05 0.05 0.05 0.05 0.05 0.05

Xanthan gum 0.25 0.25 0.25 0.25 0.25 0.25

Glycerin 3.00 3.00 3.00 3.00 3.00 3.00

Caprylyl glycol, phenoxyethanol,

hexylene glycol0.60 0.60 0.60 0.60 0.60 0.60

Acrylamide/sodium

acryloydimethyltaurate

copolymer, isohexadecane,

polysorbate 80

2.00 2.00 2.00 2.00 2.00 2.00

TOTAL (%) 100.00 100.00 100.00 100.00 100.00 100.00

Average SPF (in vitro) 9 13 21 14 21 32

Critical Wavelength (CW), nm 374 377 377 373 373 373

25

% HallBrite® EZ-FLO TDX Plus vs. SPF and CW

20

15

10

5

10 15 20

378

376

374

372

370

SPF CW

Ave

rage

SPF

(in

vitr

o)

Criti

cal W

avel

engt

h (C

W),

nm

% HallBrite® EX-FLO TDX Plus

40

% HallBrite® EZ-FLO TDX vs. SPF and CW

30

20

10

0

10 15 20

378

376

374

372

370

SPF CW

Ave

rage

SPF

(in

vitr

o)

Criti

cal W

avel

engt

h (C

W),

nm

% HallBrite® EX-FLO TDX