Application of Alkyl Phenolic Resins (Novolaks)

Difference between RESOL & NOVOLAC

Alkyl Phenolic Resin/PTOP Novolak

Rubber Goods (Tackifier) Tacky/Adhesive Tape Inks
Tire/Tyre Masking Tape As Tackifier
Conveyor Belts Fabric Tape
Hose Synthetic Tape
Rubber Coated Fabric
Mechanical Goods

Alkyl Phenolic Resin/PTBP Novolak

Rubber Goods (Tackifier) Tacky/Adhesive Tape Inks
Tire/Tyre Masking Tape Coil Coating
Conveyor Belts Fabric Tape Wire Enamel
Hose Synthetic Tape Protective Coating
Rubber Coated Fabric Marine Coating
Mechanical Goods Insulation Vanish

Alkyl Phenolic Resin/ Novola/Tackifier

Layers of Rubber need to be “held” in place before “curing”

Tackifier Resins impart “tack” to build these layers

Chemical Bond Formation

Occur during vulcaniztion

Hydrogen Bonding

Formend by Phenolic resin tackifiers

Van der Waals Forces

Weak intermolecular attraction improved by all tackifiers resins

ALKYL PHENOL RESINS / TACKIFIER / TACKIFYING/INSULATING/PTBP
POLYTONE® AP 120 POLYTONE® AP 120 H POLYTONE® AP 120 E
Colour Pale Yellow/Light Reddish Brown Pale Yellow/Light Reddish Brown Light Reddish Brown
Colour Gardner (60% Soln in Xylene) 8 Max 8 Max 12 Max
Softening Point (Ball & Ring) 92 – 103 °C 98 – 110 °C 135 – 145 °C
Acid Value 42 mg KOH/ g resin (Max) 60 mg KOH/ g resin (Max) 85 mg KOH/ g resin (Max)
ALKYL PHENOL RESINS / TACKIFIER / TACKIFYING/PTOP
POLYTONE® AP 121 POLYTONE® AP 121 H
Colour Pale Amber Pale Amber
Softening Point (Ball & Ring) 85 – 95 °C 92 – 104 °C
Acid Value 42 mg KOH/ g resin (Max) 42 mg KOH/ g resin (Max)
Free Phenol 1.0 % Max 1.0 % Max
  • Industry Leader & Standard: SI Group/SCHENECTADY (SP 1068)
  • Other Players: Sumitomo Bakelite, Arakawa, Kolon
  • Indian Players: SI Group
  • Major Consumer : Tire, Tire Remolding Compound Maker
  • Other Products used in this application
    • Hydrocarbon Resin
    • Petroleum Resin
    • C9 Resin
Rubber Goods (Reinforcing) Mounding Compounds Abrasives
Tire/Tyre Foundry Cutting Wheels
Conveyor Belts Switch Gears
Hose
Rubber Coated Fabric
Mechanical Goods

Alkyl Phenolic Resin/Reinforcing

  • These resin in presence of catalyst become “Thermoset”.
  • They provide “plasticizing effect” while processing.
  • They increase “Shore Hardness” of Rubber Compound.
  • They provide Hardness, Chip Resistance, Abrasion Resistance.

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