RECESS WAX

recess

KOKONOE RW-99 are the hot-melt type adhesive waxes for lens recessed tools that comprise mainly thermoplastic resin, petroleum bitumen and natural wax. The raw materials are purified by our own purification technique.

 

img_recess

  • KOKONOE RW-99 melt at lower temperature and the lower viscosity of the melts results in an adhesive layer of more uniform thickness.
  • The melts from KOKONOE RW-99 solidify in a shorter period of time and show a stronger adhesion force.
  • KOKONOE RW-99 absorb the strains caused by heat shrinkage.
  • KOKONOE WR-99 are easily soluble in hydrocarbonic solvents, and thus can be readily washed out.
  • The blackish brown color of KOKONOE RW-99 enables you to easily detect greys and streaks on a lens.

 

Grade

Softening

point

Working

Temprature

Penetration Adhesion
Force at 25℃
hg/cm2
Viscosity(cps)
Test

cond. A☆

Test

Cond. B★

at

100℃

at

120℃

at
140℃
No.1 55 90~130 5 13 25 600 135 42
No.2 55 90~130 5 13 30 950 210 65
No.3 58 100~140 3 8 45 550 130 45
No.4 55 90~130 3 13 40 310 94 30
No.5 55 90~130 3 10 45 330 98 30
No.6 52 80~120 10 40 25 225 70 28
No.7 52 80~120 20 80 15 140 54 20
No.8 76 120~160 5 13 30 850 120 45
(Remarks Blackish brown rod, 20℃ 140L 50g/rod)
☆ For 5 seconds at 25℃ under 100g load.
★ For 60 seconds at 25℃ under 200g load.
Remarks:The above are typical analysis data (Not specifications).