Hydrogenated resin

Foral 85 LB

Foral 85 LB resin is the glycerol ester of highly hydrogenated refined wood rosin. It is an exceptionally pale thermoplastic resin that has outstanding resistance to oxidation and to discoloration caused by heat and aging.

Key properties

Foral 85 LB resin can be used as a tackifier resin in various types of adhesives, and in protective and barrier type coatings that require an exceptional degree of color retention and oxidation resistance.

It is particularly effective in tackifying acrylic PSA formulations. A lower level of residual unsaturation provides more consistent performance in curable acrylic adhesives systems.


  • Tackifier resin for pressure sensitive adhesives used for tapes, labels, medical applications, and specialty applications
  • Tackifier resin in curable acrylic adhesives
  • Promotes aggressive surface wetting and tack
  • Improves adhesion to low energy surfaces
Find out more

  • Very high degree of hydrogenation
  • Resistant to oxidation
  • Pale color
  • Excellent color retention

  • Inherent tackiness
  • Wide solubility and compatibility
  • Low odor

Softening point, drop method, °C

Min 80, Max 88

Acid number, mg KOH/g


Color, USDA rosin scale, maximum


Softening point, ring and ball, °C


Color, USDA rosin scale


Density at 25°C, lbs/gal (kg/l)

8.9 (1,07)

Color, Gardner, 50% solids in toluene



Bag, multiwall, kraft



Net weight

50 lbs, 22.68 kg




Not regulated


21 CFR 175.105

21 CFR 177.1200


21 CFR 175.125(b)
21 CFR 175.300
21 CFR 175.320
21 CFR 175.380
21 CFR 175.390
21 CFR 176.180
21 CFR 176.200
21 CFR 176.210

21 CFR 177.1210
21 CFR 177.1400
21 CFR 177.2600
21 CFR 178.3120
21 CFR 178.3800
21 CFR 178.3850
21 CFR 178.3870

Pastillated or flaked resins may fuse, block, or lump during hot weather months, if stored near sources of heat, if double or triple stacked, or if stored for prolonged periods of time.

These forms of resin are prone to gradual oxidation, some more so than others. This could result in darkening and/or could have an adverse effect on solubility in organic solvents.

Care should be given to minimize opportunities for product oxidation throughout processing. Accordingly, it is strongly recommended that proper storage conditions and strict control of inventory be observed at all times, taking care that the oldest material is used first.