| abstract |
THE PRESENT INVENTION RELATES TO A TREATMENT OF GLASS BEADS WHICH MAKES THEIR WETABILITY CONTROLLED. THE PEARLS ARE COATED WITH A MIXTURE OF SUBSTANCES INCLUDING A SUBSTANCE WHICH, IF USED ALONE, WOULD MAKE THE BALLS HYDROPHOBIC WHILE RETAINING THEIR OLEOPHILIC CHARACTER AND A SECOND SUBSTANCE WHICH, IF IT WERE USED ALONE, WILL MAKE THE BALLS HYDROPHOBIC WHILE RETAINING THEIR OLEOPHILIC CHARACTER AND A SECOND SUBSTANCE WHICH, IF IT WERE USED, HYDROPHOBIC. THE TREATED BEADS ARE SUITABLE AS A FILLER IN POLYMERS AND IN PARTICULAR SUITABLE AS A REFLECTING AGENT IN PAINTS (EG PAINTS FOR ROAD MARKS). |