Patent ID: 6248812
Filing Date: 2001-06-19
Classification: C04B,Y02W

Abstract:
A method of preparing a cohesive product containing a hydraulic binder, for the subsequent manufacture of a finished product by hydration of the hydraulic binder in the cohesive product, from a feedstock selected from the group consisting of a lignocellulosic material, exfoliated vermiculite, expanded perlite, and a mixture of two or three thereof, which method includes the steps of:(1) providing the feedstock in the form of substantially dry finely divided linocellulosic fibres, or substantially dry finely divided exfoliated vermiculite particles, or substantially dry finely divided expanded perlite particles, or a mixture of two or three thereof;(2) mixing the feedstock with:a) a suitable amount of a thermosetting resin in finely divided dry powder form, andb) a suitable amount of hydraulic binder in finely divided dry powder form; to give a dry starting material; and(3) forming the dry starting material of step (2) while subjecting it to suitable conditions of temperature and pressure to cause the thermosetting resin to set to form the cohesive product.