METHOD OF MAKING A FINISHED PRODUCT FROM A FEEDSTOCK, AN ALKALINE EARTH METAL OXIDE OR HYDROXIDE, AND A THERMOSETTING RESIN

Title:

METHOD OF MAKING A FINISHED PRODUCT FROM A FEEDSTOCK, AN ALKALINE EARTH METAL OXIDE OR HYDROXIDE, AND A THERMOSETTING RESIN

Document Type and Number:

WIPO Patent Application WO2002090292

Kind Code:

A3

Abstract:

A method of making a finished product includes the steps of (a) providing a dry feedstock selected from the group consisting of particles or fibres of a lignocellulosic material; particles of an expanded mineral; particles of a foamed set hydraulic binder; particles of an undensified silica fume or a mixture of two or more thereof; (b) mixing the feedstock with: (i) a suitable amount of a thermosetting resin in finely divided dry powder form; (ii) a suitable amount of a first binding agent selected from the group consisting of an alkaline earth metal oxide or hydroxide; or a mixture of two or more thereof, in finely divided dry powder form; and (iii) a second binding agent such as a pozzolan in finely divided dry powder form; to give a starting material; (c) subjecting the starting material of step (b) to suitable conditions of temperature and pressure to cause the thermosetting resin to set to form a cohesive product; (d) providing to the cohesive product of step (c) water in an amount sufficient to permit the reaction of the first and second binding agents to form a binder; and (e) allowing the binder to set to form the finished product. The finished product may, for example, be a board.

Inventors:

SYMONS MICHAEL WINDSOR (ZA)
LESSING JOHANNES GERHARDUS VIS (ZA)

Application Number:

PCT/IB2002/001566

Publication Date:

January 03, 2003

Filing Date:

May 09, 2002

Export Citation:

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Assignee:

BALMORAL TECHNOLOGIES PROPRIET (ZA)
WINDSOR TECHNOLOGIES LTD (BS)
SYMONS MICHAEL WINDSOR (ZA)
LESSING JOHANNES GERHARDUS VIS (ZA)

International Classes:

C04B28/04; C04B28/18; C04B40/06; (IPC1-7): C04B40/06; C04B28/18

Domestic Patent References:

WO1998037032A1	1998-08-27
WO2001058824A1	2001-08-16

Foreign References:

US5637412A	1997-06-10
US4202851A	1980-05-13
US5358676A	1994-10-25
EP0585998A1	1994-03-09
DE2165354A1	1972-07-27

Other References:

PATENT ABSTRACTS OF JAPAN vol. 2000, no. 04 31 August 2000 (2000-08-31)

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