Application example 1
Acrylic emulsions
Acrylic emulsions that use Nichigo G-Polymer™ have the outstanding stability and
special film attributes characteristic of protective colloid-type emulsions.
Acrylic emulsions that use Nichigo G-Polymer™ demonstrate excellent mechanical stability,
chemical stability, pigment mixture stability, freezing and melting stability, and low temperature
viscosity stability
1) Malon test, 10% emulsion, 10 kgf, 1000 rpm, 10 min.
2) Aqueous solution observed after sodium
sulfate (0.5 g) added to 10 g diluted emulsion and left for 30 minutes
3) Ca(OH)2
added to the emulsion until condensation occurs
4) Viscosity 27 days after
polymerization/viscosity immediately after polymerization
Films derived from acrylic emulsions that use Nichigo G-Polymer™ have unique film
characteristics.
Film from acrylic emulsions that use Nichigo G-Polymer™ demonstrate excellent water resistance
compared to conventional polyvinyl acetate emulsions that use PVOH.
Films from acrylic emulsions that use Nichigo G-Polymer™ maintain their shape even after 60
minutes immersed in water.
In contrast, every polyvinyl acetate emulsion film breaks down and
loses its shape.
【Samples】
Left : Film at room temperature from redispersed emulsion of acrylic emulsion powder
that uses Nichigo G-Polymer™
Center : Film at room temperature from redispersed emulsion
of EVA emulsion powder
Right : Film at room temperature from redispersed emulsion of VAc/Veova10
emulsion powder
By using crosslinking agents together with acrylic emulsions that use Nichigo G-Polymer™, the
water resistance of films can be improved.
1) Sumimal M-30W (methylol melamine): 0.42 (parts/ emulsion)
2) Measurement of emulsion film
hazing after being immersed in 23℃ water for three hours
Films of acrylic emulsions that use Nichigo G-Polymer™ demonstrate outstanding solvent
resistance.
Emulsions were applied to PET films, and toluene was dripped on the dried (at 23℃) emulsion
films. → These pictures show the emulsion films after drying.
Films of acrylic emulsions that use Nichigo G-Polymer™ have excellent adhesion when used with
glass and other hydrophilic materials.
These pictures show films after emulsions were applied to glass panes and the dried (at 23℃)
emulsion films were immersed in water for 24 hours.
