试验证实，PATC有一个最适添加量，在此用量下PATC不仅可以
（使含粉体系）降粘,同时还可以提高体系的稳定性
CS-PP
Page | 4
Microstructure (10X10) with different PATC concentrations
100倍下的显微照片
X=0 X=0.5 X=1 X=2
Formula 2 A ABIL EM 90 乳化剂
TEGOSOFT DEC
碳酸二乙基己酯
DC 345 环硅烷 TEGOSUN TDEC 45 B Water Glyerin VARISOFT PATC NaCl preservative
％ 2.0 9.0
14.0 10.0 To 100
5.0 x
1.0 q.s.
A new method to prepare low viscosity but stable W/O system
一种制备低粘度稳定油包水 体系的新方法
CS-PP shanghai Lab
Background 研究背景
Low viscosity W/O system is difficult to make，especially for powder contained formulas like sunscreen lotion ( shake-shake formula) and low viscosity liquid foundation. The main reason is not easy to stabilize: oil separation or powder sedimentation always occurs.
Compared with Formula 1,
TEGOSUN TDEC 45 decreased from 14% to 10% TDEC 45的含量从14％降至10，相当于粉量从6.3% 降至4.5%。
CS-PP
X value
0
0.25
Viscosity 1088 mpa.s
714.7
Centrifugal test ，1000rpm
PATC
Viscosity mpa.s 1184
980
Centrifugation test ，离心测试 1000rpm
10min
Oil out OK
20min
Oil out OK
30min
Oil out OK
PL Flake 1408
XL 80 1418
SB Z 1173
Oil out 出油 Oil out 出油 Oil out 出油
OK
OK
OK
OK
Oil out 出油 Oil out 出油
Compare with other hydrophilic emulsifier, cationic emulsifier shows outstanding
suspension ability for W/O powdery system
can only get stable viscosity no less than 5000cps.
使用疏水的硅石或者膨润土。根据反复测试和筛选，可稳定的最低粘度
为5000－6000cps
2. A patent from Beiersdorf (US 7138128 B2) claimed that cationic polymer can improve stability of low
低粘度W/O含粉体系，如防晒(shake-shake 配方)，低粘度粉底液等， 通常遇到的最大问题是离心出油或者粉沉积，体系难以稳定.
Two methods have been studied targeting to this topic:
对文献和经验中的两种解决办法进行了研究：
1. Stabilizers like fumed hydrophobic silica or hydrophobic bentonite was studied and screened, but it
10min
Oil out OK
20min
Oil out OK
30min
Oil out OK
0.5 10.7
Water out Water out Water out
Less nano powder added, less cationic emulsifier needed 含粉量降低，PATC的最适用量随之降低
45℃2weeks
OK OK
W
O
O
W
O
O
W
OK coarse W
O: oil out; W: water out
分层
破乳
PATC has an optimum amount in this system, at a certain range, viscosity can be
lowered but suspending stability is improved! This finding is very interesting.
Page | 5
Compare with other O/W emulsifiers
和其它HLB值较高的乳化剂相比较
Based on Formula 1，0.5% PATC was substituted by PL Flake (GMS SE, anionic)，Abil care XL 80
(nonionic) and REWOPOL SB Z (anionic). Results are as follows:
在配方1基础上，将0.5%PATC换成TEGIN PL Flake (自乳化单甘酯)，ABIL Care XL 80（硅油改性的非离子水包油乳化剂），以及REWOPOL SB Z （月桂基磺基琥珀 酸盐），研究这些不同离子性的亲水乳化剂对W/O含粉体系离心稳定性的影响。
Emulsifier
blank
viscosity, high water content W/O system, but the result also shows the lowest stable viscosity is above 5000cps.
Beiersdorf的一篇专利宣称使用阳离子聚合物可以帮助稳定较低粘度的
CS-油PP 包水体系，但是同样，最低的粘度还是在5000－6000cps
％ 2.0 7.0
17.0 14.0
To 100 5.0 x 1.0 q.s.
X
0
0.5 1.0
2.0
Viscosity mpa.s
1184 980 437.3 42.7
Centrifugal test，3000rpm
5min
O
OK OK
W
10min
O
15min
O
30min
O
Heat
O
stability
A
ABIL EM 90
2.0
2.0
TEGOSOFT DEC
8.0
8.0
DC 345
11.0
11.0
TEGOSUN TDEC 45
14.0
14.0
B
Water
59
59
Байду номын сангаас
Glyerin
5.0
5.0
VARISOFT PATC
0
0.5
NaCl
1.0
1.0
preservative
q.s.
q.s.
Viscosity（sp62, 30rpm） 1877mpa.s 1173mpa.s
which is unstable even with 3000mpa.s.
C加S-PP水增稠后，F6可通过稳定性测试，F5即使粘度更高但是不稳定
Graph
Page | 9
Different nano TiO2（solid powder） 超细钛白粉干粉的情况
Centrifugal (3000rpm,30min)
Oil out Less oil out
Formula 5 2.0 5.0 9.0
14.0 64 5.0 0 1.0
q.s. 3157mpa.s
Oil out
Formula 6 2.0 5.0 9.0
14.0 64 5.0 0.5 1.0
q.s. 2165mp.s
dispersion of tested hydrophobic treated TiO2 powders.
图片结果显示只有PATC对当前测试的疏水改 性超细钛白粉有较好的分散作用，这进一步证 实PATC和粉体之间的相互作用。
Page | 7
lower content super fined TiO2 system 在较低含量超细粉体系中的情况
OK
Compared with F3，F4 has lower viscosity and better stability.
和配方F3相比，F4的粘度更低且稳定性更好
After adding more water, the system can be stable at around 2000 mpa.s(F6)，much better than F5,
阳离子乳化剂与其它乳化剂相比，对W/O含粉体系的降粘和悬浮稳定性改善最明 显
CS-PP
Page | 6
Dispersing effect by different surfactants
对疏水处理钛白粉的分散性比较
0.5%Surfactants + water + TEGOSUN TDEC 45