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(11)    Patent No :    AP 2194    (73) Applicant(s)       
(21)    Application No :    AP/P/2004/003086    DE BRUYN Henri Arnold, 31 Jack Bennett Street,       
            Sterrewag, 0181, Pretoria,       
                   
(22)    Filing Date :    14.01.2003    South Africa       
(24)    Date of Grant &    10.01.2011           
                   
(45)    Publication :

(30)  Priority Data    (72) Inventors

    (33) Country    (31) Number    (32) Date    DE BRUYN Henri Arnold, South Africa   
    ZA            2002/0291        14.01.2002    FOCKE Walter Wilhelm, South Africa   
    ZA            2002/2582        03.04.2002       
                            (74) Representative   
(84)    Designated State                   
    BW    GM    GH    KE    LS    MW    MZ   NA   SL    HONEY & BLANCKENBERG   
    SD    SZ    T Z    UG    ZM    ZW               
(51)    International    Classification    C09K 17/28 (2006.01)    C09K 17/40 (2006.01)   
                            C09K 17/48 (2006.01)       
(54)    Title

Binder composition and method for treating particulate material

(57)    Abstract

In accordance with this invention a binder composition for treating particulate material to form a solid aggregate matrix is prepared by providing a urea formaldehyde precondensate; a polar solvent; additional urea; an acid or salt thereof, the acid or salt thereof being selected such as to render the pH of the

binder composition to a value from 2.0 to 5.3; providing a sugar; providing a binding promoter for enhancing the binding between the binder composition and the particulate material; and mixing the above so as to form a binder composition. The binder composition is mixed with particulate material and allowed to set into a solid aggregate matrix over a period of longer than 30

(56)    Documents Cited :    WO 00 40669 A    GB 1184129 A    GB 1194227 A

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