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 (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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