H
A
P
- O
  - O
  - O
  - O
  - O
- D
N
H
Ü
- U
- Z
- A
- F
K

Optical Brighteners For Plastic, Resin

E
A

O

<F, P, O,F<

V

ST-2 (2) — O
W

荧光增白剂OB新 — O

cof — O

荧光增白剂ER-2新 — O

cof — O

荧光增白剂351新 — O

荧光增白剂4bk新 — O

Intermediate

M

O
2
O
O
O
O
O
F
A
T
O
2

V
Ä
B

D

O
G

D
<

D
B

<
M

<
E

.

Z

A2
D
M2
A
O1
W
P2
P
K2
W
D2
D

v

F
B
F
F
O
4
O
F
A
B
O

3
T
s

© Fluorescent Whitening Agent Vbl Brightner KCB Shandong Subang Optical Brightener 52 Ranipal WG Optical Brightening Agents >