Hydro gelator for cosmetics

ADEKA NOL GT-700

2

Hydro gelator for cosmetics

ADEKA NOL GT-700

INCI name : PEG-240/HDI COPOLYMER BIS-DECYLTETRADECETH-20 ETHER

2% aqueous solution

High-elastic water gel

Tolerance for salt

Good stability

Purity Appearance Melting point Viscosity of 1%aqCloud

point(1%aq)

>99%white-yellow

solid55-65ºC 1000 5000mPa·s 60-75ºC

3

OH CH2 CH2 O H 240

O CH2 CH2 O H R20

CH2 CH2 CH2 CH2 CH2 CH2 NCOOCN

n

Hydrophobic group

(DECYLTETRADECETH)

Connecting group

(HDI)

Hydrophilic group

PEG-240

NCO OH NH

C

O

O+

Urethane bond

Each monomer is connected with urethane bond

R=C24

INCI name : PEG-240/HDI COPOLYMER BIS-DECYLTETRADECETH-20 ETHER

4

Viscosity of ADEKA NOL GT-700 aq

1.E+00

1.E+01

1.E+02

1.E+03

1.E+04

1.E+05

1.E+06

0.01 1 100 10000

Shear rate (s-1)

Visco

sity (mPa・s)

1%

1.5%

2%

1% 1.5% 2%

Storagetaking gel out

of bottle

Spreading gel

on the skin.

Spray

5

Method of mixing with water

Appearance Melting point Cloud point

white-yellow solid 55-65ºC 60-75ºC

G T -700

80℃ 80℃ U nder 60～75℃

cool cool to r.t.

C loudy liquidW ater C lear gel

6

Compare with other gelators

GT-700 2%aq Carbomer 1%

TEA 0.6%

Xanthan gum 2%aq

clear

not sticky

high-elastic

sticky

no restoration

stringynot clear

sticky

7

Influence of salt

1.E+00

1.E+02

1.E+04

1.E+06

1.E+08

1.E+10

0.01 1 100 10000

Shear rate (s-1)

Visco

sity(m

Pa・

s)

NaC l 0%

NaC l 1%

NaC l 3%

Carbomer 1%, TEA 0.6%

Influence of NaCl

Salts have no influence

on the viscosity

GT-700 2%aq

Influence of NaCl

1.E+00

1.E+01

1.E+02

1.E+03

1.E+04

1.E+05

1.E+06

0.01 1 100 10000

Shear rate (s-1)

Viscosity (mPa・s)

NaC l 0%NaC l 1%NaC l 3%NaC l 5%NaC l 10%

The viscosity decrease

by addition of NaCl

8

1.E+00

1.E+02

1.E+04

1.E+06

1.E-03 1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04

Shear rate (s-1)

Viscosity (mPa・s)

15℃

25℃

40℃

50℃

GT-700 2%aq

The viscosity changes reversibly by temperature in 15 - 50ºC

heating

cooling

*The irreversible separation is shown at 60ºC due to reach to cloud point.

9

1.E+00

1.E+01

1.E+02

1.E+03

1.E+04

1.E+05

1.E+06

0.01 1 100 10000

Shear rate (s-1)

Visco

sity (mPa・

s)

0% 1%3% 5%10% 20%50%

Conc. of PG

Viscosity gradually decrease with increase of PG concentration.And water gel collapse at high-concentration of PG.

* Same tendency in case of glycerin, 1,3-BD and DPG

collapsing of gel

keeping the gel

10

pH 7.7

pH 1.7

pH 10.0

GT-700 2%aq in buffer solution

After 28 days

Storage temp : 40ºC

Viscosity measurement temp : 25ºC

immediate

Stability against of acids, alkalis and redox agents

11

Stable Unstable

Water (pH 2-10)

13% Thioglycolic acid aq

10% bromic acid salt aq

High concentration of acids, alkalis

H2O2

Hypochlorous acid salt

12

Influence of surfactant

1.E+00

1.E+01

1.E+02

1.E+03

1.E+04

1.E+05

1.E+06

1.E+07

0.01 1 100 10000Shear rate (s

-1)

Viscosity (mPa・s)

0%

0.1%

0.3%

0.5%

1%

2%

surfactant 0.1 1% :gel strength increase

surfactant over 2% :gel collapse

GT-700 2%aq, influence of surfactant

Surfactant SODIUM LAURETH SULFATE

(Anionic surfactant)

* Same tendency in case of nonionic, cationic and ampholytic surfactants

13

Gelation mechanism of GT-700

~1% 1~1.5%

Hydrophilic

group

Micelle

Convection (low viscosity)Soft gel

(increase of viscosity) Hard gel

~1.5%

Hydrophobic

group

14

GT-700 2%aq

Add surfactant

surfactant

GT-700/surfactant = 2/1

gel strength increase

Add surfactant

GT-700/surfactant = 1/1

gel collapse

15

n

Hydrophobic group

Hydrophilic group

GT-700 acts as a surfactant and a gelatinizing agent

Emulsion gel can be obtained

Formulation

oil* 10% GT-700 2%

water 88%

oil :Liquid paraffin

Isopropyl miristate

The emulation gel is stable in one month.

16

Summary

Salt Tolerance

Emulation gelSpray

Good Stability

ADEKA NOL GT-700

Hydro gel

Surfactant inhibition

Thixotropic

High-elastic

17

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