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Wacker SiliconeWacker-Belsil Formula for Beauty

Dr. Koini / 14.10.199

Vo lati le Sil icones

fo r

Personal Care

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Volati le Sil icone Fluids

Product INCI Designation Common Name

Wacker-Belsil CM 040 Cyclopentasiloxane Pentamer or D5Wacker-Belsil DM 0.65 Hexamethyldisiloxane Dimethicone 0.65 cstWacker-Belsil DM 1 plus Dimethicone

Properties / Benefits

Low Surface Tension - good spreading characteristics

Low Bp/High Vapor Pressure - Rapid evaporation- completely dry between 25 sec. - 100 min. @ 25 C

Low Heat of Vaporization - 30 - 46 cal/g (Ethanol = 210 cal/g)- no cooling or stinging effect

Soluble in Solvent Alcohols, Organic Esters, and some Natural Oils- formulation flexibility

Gas Permeable, Physiologically Inert- non-irritating, non-occlusive on skin

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Volatile Silicones in Personal Care

Glob al Sales Data

0

10000

20000

30000

40000

50000

60000

1996 1997 1998 1999 (est.)

MetricTons

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Evaporation rates according to DIN 53249

0

20

40

60

80

100

0 20 40 60 80 100 120

Time (min)

Evaporatio

n(%)

CM 040 (= D5)

D4/D5 (=80/20 wt-%)

D4

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0

20

40

60

80

100

0 20 40 60 80 100 120

Time (min)

Evaporatio

n(%)

DM 0.65

DM 1

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0

20

40

60

80

100

0 20 40 60 80 100 120

Time (min)

Evaporatio

n(%)

Water

Isopropanol

Ethanol


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0

20

40

60

80

100

0 20 40 60 80 100 120

Time (min)

Evaporatio

n(%)

DM 0.65

CM 040 (= D5)

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0

20

40

60

80

100

0 20 40 60 80 100 120

Time (min)

Evaporation(%)

DM 0.65

CM 040 (= D5)

D4/D5 (=80/20 wt-%)

D4

Water

DM 1 plus

DM 1

K inetics / DM 1 plus:

Time [min] Rate of evaporation [%/min]

0 - 10 10

30 0.5

>60 0.15

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Typical properties of volatile silicones:

CM 040

(=D5)

D4/D5 D4 DM 0.65 DM 1 DM 1 plus

Appearance clear,

colourless

clear,

colourless

clear,

colourless

clear,

colourless

clear,

colourless

clear,

colourlessViscosity, approx.

[mm2/s]

4.2 3.0 2.5 0.65 1.0 1.0

Density at 25C [g/cm3] 0.96 0.95 0.96 0.76 0.81 0.83

Melting Point [C] -45 -14 17 -68

Boiling Point [C] 205 180 172 100 152 153

Flash Point,closed cup [C]

77

DIN51758

>70 55 4

DIN 53169

40

DIN53213

32

DIN51795

Surface Tension, at20C [mN/m], approx.

18.0 18.0 17.8 15.9 17.4 17.3

Refractive Index,at 25C, approx.

1.397 1.395 1.394 1.375 1.382 1.385

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Volatile Silicones in Hair Care

Use levels

Diluent, carrier for silicone gums 1.0 - 75%Reduction in wet combing forces

No build-up potentialTransient shineDelivery system for cuticle coats, shine spraysReduced drying timesPrevention of clogging of pumps and valvesResin plasticizer

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Hair Care:

Volatile Silicones as solvents for polydimethylsiloxane fluids:

Benefits: - improved spreadability- durable conditioning- improved feel- reduction of wet and dry combing forces- enhanced shine

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Volatile Silicones in Skin Care

Use Level

Diluent, carrier, delivery system 0.5 - 10%Transient emollientImproves rub-in and spreading characteristicsDetackifier

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Skin Care:


Benefits: - soft, smooth feel emolliency

- anti - whitening- anti - soaping- hydrophobicity- breathable barrier

Volatile Silicones as solvents for surface active silicones:

Benefits: - preparation of W/O-, W/Si-emulsions- light, non-greasy impression- low irritation potential

Volatile Silicones as solvents for silicone resins:

Benefits: - hydrophobicity- film former- smooth feel- long-lasting effect

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Use levels

Carrier, delivery system 1.0 - 65%Rapid dry without cooling or stinging effectLubricant for aerosol actuators, roller ballsTransient emollientDetackifier

Volatile Silicones in Antiperspirants / Deodorants

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An tiperspirants / Deodorants:


Benefits: - anti whitening- lubricant (also for volves, pumps)- nice skin feel

Volatile Silicones as solvents for surface-active silicones:

Benefits: - light, non-greasy impression- low irritation potential

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Use Levels

Improves pigment distribution 1.0 - 10%Improves rub-in characteristicsTransient emollientControlled evaporation sets pigments in placeCarrier for film-forming resinsImproves flow (nail polishes)

Volatile Silicones in Color Cosmetics

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Color Cosmet ics :

Volatile Silicones as solvents for silicone resins:

Benefits: - long lasting effect- sweat proof- reduction of pigment transfer- reduction of pigment agglomeration


Benefits: - improved spreadability- soft, smooth film- hydrophobicity

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Environmental Considerations

- volatile silicones

- not found in soil or water (high vapor pressure, extremely low water solubility)

- in the atmosphere: oxidative chemical degradation

=> ultimately converted to SiO2, H2O, CO2

- VOC exempt (are not VOC ozone precursors)

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