Santoweb® D

Santoweb® D by Lanxess is a treated cellulose fiber product that provides reinforcement for uncured and cured rubber compounds. It increases product stiffness, green strength and reduces die swell, cold flow, cut growth rate in rubber compounds. It also functions as filler. It contains a resorcinol-based resin for good bonding to the rubber matrix. 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. It provides reinforcement for uncured and cured rubber compounds. It shows compatibility with NR, SBR, BR and CR. It contains 68% wood pulp and 32% SBR binder. It can be processed by calendaring and extrusion. Santoweb® D is designed for raw edge V-belt base compounds, low pressure hoses, gaskets, diaphragms and tire bead apex compounds. Recommended dosage for improved green strength is at levels of 1-4% by weight, increased flexural stress at 5-15% by weight and very significant fiber reinforcement at 10-20% by weight.