(7) Polyurethane Dispersion for Natural Leather Coatings
Articles
B-65
A-20A
T-32
T-62B
Characteristics
Cationic
High penetration to leather,
Resistant to acidic additives
Hydrolysis resistant
Anti-blocking at embossing,
Resistance to color migration
Excellent film
formation behavior

Hydrolysis resistant,
Good adhesion to leather,
Anti-blocking at embossing
Soft grade
Good tough feeling
Excellent film formation behavior
Hydrolysis resistant,
Good adhesion to leather,
Anti-blocking at embossing
Abrasion resistant
Middle soft grade
Very high gloss & transparency
Hydrolysis resistant,
Abrasion resistant
Section sensitivity
Application
Coatings containing acidic additives,
Light coating for anti-loose grain,
Coating for anti-color migration
Base coat & top coat for nature leather

Top coat or finish for

nature leather

High gloss top coat or finish for natural leather

Solid content (%)
33
35
38
38
Viscosity (cps)
< 200
< 200
< 200
< 200
PH Value
3.5-5.5
7.0-9.0
7.0-9.0
7.0-9.0
Appearance of dispersion
Semi-transparent white
Almost transparent
Semi-transparent white
Semi-transparent white
Content of organic solvent
0
0
0
DMAc=8%
Content of formaldehyde, APEO, Sn
0
0
0
---
Comply with Reach Requirements
Yes
Yes
Yes
DMAc=8%
Appearance of dried film
Transparent
Transparent
High gloss & transparent
High gloss & transparent
100% Modulus
(kg/cm2)
45 ±10
36 ±6
45 ±10
70 ±20
Tensile Strength
(kg/cm2)
> 100
> 250
> 300
> 350
Elongation (%)
> 500
> 550
> 500
> 450
Flexibility (Cycle)
---
> 100,000
> 100,000
> 100,000
 Storage Time
12 months
12 months
8 months
8 months
 
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