The Universal Selection Source:
Polymer Additives
by SpecialChem
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Santoweb® H

Technical Datasheet | Supplied by Lanxess
65% wood pulp with 35% EPDM as binder. Acts as a filler. It contains resorcinol-formaldehyde resin, a methylene receptor to maximize bonding of the fibers to the rubber matrix. It provides reinforcement for uncured and cured rubber compounds. Increases green strength, reduces die swell and cold flow. It does not cause compound staining. It should be used with a methylene donating chemical for applications in which adhesion of the fiber to the rubber matrix is critical. Compatible with EPDM and IIR. Recommended for low pressure hoses, gaskets and diaphragms. Provides improved green strength with loadings of 1-4 wt.%, increased flexural stress at levels of 5-15 wt.% and very significant fiber reinforcement at 10-20 wt.%.
Product Type
  • Fillers > Cellulosics
  • Fibers > Biofibers > Cellulose-based
Chemical Composition
Wood pulp with EPDM binder
Physical Form
Product Status
Applications/ Recommended for
  • Other Rubber > IIR, Butyl Rubber
  • Other Rubber > EPDM
  • Synthetic rubbers
  • Sealants, seals & gaskets
  • Pipes, Hoses & Fittings > Hoses
  • Diaphragms
  • Calendering
  • Extrusion
  • Diaphragms
  • Mechanical/ physical performance > Stiffness
  • Diaphragms
Food contact approval
Bio Based
Bio Based Content (%)
65%, Wood pulp based
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