Marking comprising glass beads in a matrix

Details Marking comprising glass beads in a matrix Marking comprising glass beads in a matrix

C - Chemistry, Metallurgy

08

K

240/150, 117/183

C08K 9/04 (2006.01) C08K 7/20 (2006.01) C09D 5/33 (2006.01) E01F 9/04 (2006.01) E01F 9/08 (2006.01) G09F 3/00 (2006.01) G09F 13/16 (2006.01) G09F 19/22 (2006.01)

Patent

CA 1336997

There is described a marking kit which comprises material which is capable of forming a polymeric matrix together with glass beads for incorporation into such matrix; surface treated glass beads suitable for incorporation into such matrix; a process for the surface treatment of such glass beads; a reflective surface marking comprising a synthetic matrix incorporating such glass beads; and a process for the reflective marking of a surface. The glass beads have been surface-treated so that the surface tension of the treated beads is greater than the surface tension of the matrix-forming material, but less than 70 mN/m. In the surface treatment, the beads are brought into contact with at least one organic or organo-metallic compound selected from chloro, bromo, iodo,amino, chloroamino, mercapto and epoxy compounds to form a coating on their surface of a type which makes them hydrophobic and may give the beads a surface tension within the range 30 to 51 mN/m. Thus treated beads are suitable for incorporation in layers of a matrix material to form a reflective marking for a pavement. The marking may be formed by depositing the required thickness of matrix-forming material and sprinkling the treated beads on the surface of that material before it hardens.

580865

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