PROCESS FOR SYNTHESIS OF ANTIMICROBIAL COPPER NANOPARTICLES

    公开(公告)号:EP3329778A1

    公开(公告)日:2018-06-06

    申请号:EP16207212.8

    申请日:2016-12-28

    摘要: The present invention belongs to the field of processes for preparation of antimicrobial nanoparticles, more particularly to the field of processes for preparation of antimicrobial copper nanoparticles which include functional alkoxysilanes, preferably aminopropyltrimethoxysilane (APTMS) as precursors, which function as capping agents.
    The essence of the synthesis process of copper nanoparticles is in that it includes high-temperature polyol synthesis based on organic based colloidal solution of copper nanoparticles with the average particle size in the range from 5 nm to 170 nm using functional trialkoxysilane molecules as capping agents (which limit particle growth). Antimicrobial copper nanoparticles prepared according to the synthesis process have a wide spectrum of use, for example as bactericides in paints or plasters for hospital equipment, in medical instruments and devices, in preparation of textiles with antimicrobial properties, in water treatment, in food processing as well as in objects and equipment in public spaces, public transportation, paints, toys, kitchens and hospital utensils.

    FUNCTIONALIZED SURFACE
    10.
    发明公开
    FUNCTIONALIZED SURFACE 审中-公开
    功能化表面

    公开(公告)号:EP3319424A1

    公开(公告)日:2018-05-16

    申请号:EP16741111.5

    申请日:2016-07-11

    CPC分类号: A01N37/46 A01N25/08 A01N25/34

    摘要: A nitrided metal surface functionalized with molecules, each molecule comprising at least one binding group and an antimicrobial moiety. The molecules are immobilized on the surface by only covalent interactions between the binding groups of the molecules and nitrogen atoms within the nitrided metal surface. The binding group is a carboxyl and at least some of the molecules consist of antimicrobial moiety. Preferably, the molecule or the antimicrobial moiety is a peptide or fragment thereof. The exemplified peptide is derived from defensin. The metal may be steel, iron, titanium, aluminium, chromium, molybdenum or an alloy thereof. Also claimed are articles comprising the functionalized nitrided surface which find use in inhibiting or reducing the growth of microorganisms on surfaces that are frequently touched. The article may be part of a worktop, chair, desk, table, door, handle, railing, keyboard or medical device. A method for preparing the functionalized nitrided surface is also claimed.