Characteristics and applications:
RA resin series are made from modified rosin with special process. Provide excellent dissolvability in low carbon alcohol, light color aging resistance and light resistance. Widely used in alcohol soluble and water soluble precoated adhesive, pressure-sensitive adhesive, plastic printing ink and electronic flux.
Specifications.
| Item No. | Appearance | Softening point (R&B oC) | Gardner Color (50%ethanol) | Acid No. (mgKOH/g) |
| RA90 | Light yellow flaky solid | ≥90 | ＜5 | ≥180 |
| RA90W | Light yellow flaky solid | ≥90 | ＜3 | ≥180 |
| RA100 | Light yellow flaky solid | ≥100 | ＜5 | ≥190 |
| RA100W | Light yellow flaky solid | ≥100 | ＜3 | ≥190 |
| RA120 | Light yellow flaky solid | ≥120 | ＜5 | ≥210 |
| RA120W | Light yellow flaky solid | ≥120 | ＜3 | ≥210 |
| RA140 | Light yellow flaky solid | ≥140 | ＜10 | ≥145 |
| RA140W | Light yellow flaky solid | ≥140 | ＜4 | ≥145 |
| RA160 | Light yellow flaky solid | ≥10 | ＜10 | ≥145 |
| RA160W | Light yellow flaky solid | ≥160 | ＜4 | ≥145 |