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WPU—2802B
Aqueous aliphatic polyurethane dispersion
Product introduction:
The product with good room temperature drying and self-crosslinking function synthesized with water as the dispersion medium,and it had been formed
by adopting the IPN polymeric technology and molecule design.Excellent water-based glass coating,wood coating and plastic coating can be prepared from WPU-2802B.
Physical properties:
Type |
WPU-2802B |
Composition |
Aliphatic polyurethane |
ionicity |
anion |
Appearance |
milky white and blue liquid |
Non-volative contnet |
38±1% |
PH |
7±0.5 |
Sovent |
water |
Viscosity |
100-200mpa.s |
Free IPDI% |
0 |
Features:
u Fast dry-speed
u Good hardness, high gloss,good fullness, and excellent water resistance and abrasion resistance
u No free isocynate monomer, no benzene substance,formaldehyde and other toxic solvent, water-based, environmentaly friendly, and non-toxic
Application area
u water-baed glass coat
u water-baed plastic coat
u water-based ink
u leather, textile, paper, wood and other substrate
Application guide:
u Good yellowing resistance,can be used for light colour substrate.
u Hardness and flexibity can be enhanced when mixed with coupling agent
u high quality two-component top coat can be prepared mixed with isocynate curing agent.
u High hardness two-component coat can be prepared mixed with WA-128A of hydroxy acrylic emulsion.
u Can be diluted with water, good
compatibility with non-ionic and anionic water-dispersible polyester resin, water-dispersible alkyd resins, acrylic emulsions and water
dispersible PU curing agent;
u available to the desired viscosity
by thickening agent
u Painting method: spraying, curtain coating, dip coating;
u Curing conditions: room temperature or low temperature baking
Reference formula：
(Double-component platic coat for example)：
Material |
quantity/g |
|
A component |
2802B |
70 |
128A |
20 |
|
water |
9 |
|
Coupling agent |
0-1 |
|
Wetting agent |
0.1-0.5 |
|
Flatting agent |
0.1-0.5 |
|
Thickening agent |
certain amount |
|
B component |
Isocyanate curing agent |
10-15 |
Film performance：(25℃, 72 h)
testing item |
testing method |
result |
appearance |
visual observation |
Good fullness |
Gloss |
60℃glossmeter |
≥95% |
adhesion |
grid test |
0 class |
hardness |
pencil hardness |
≥2H |
Water resistance |
dipping |
≥72h |
Abrasion resistance |
national standards |
good |
Chemical resistance |
Sweaping,dipping |
good |
Packaging and storage:
u15KG, 50KG, 100KG, 200KG plastic drum;
u stored in 100% opaque airtight container;
u stored in cool and dry room place at 5-30℃;
u the shelf life will be significantly reduced in high temperature or exposure conditions;
u the shelf life is six months on the condition of not opening the can
Material safety:
The MSDS of the product will be provided under the client’s request
Special Note：This information is based on our existing technology and experience.and the provided technical advice are all on the basis of sincerity.it is not guaranteed for use in all samples and recipes,and all data above is just for reference.
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