Compositions and protective coatings made therefrom
AssigneeLanda Corporation Ltd.
InventorsBenzion Landa, Meir Soria, Omer Ashkenazi, Sagi Abramovich
Life of this patent
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Abstract
There is disclosed a condensation curable coating composition in the form of an oil-in-oil emulsion, the coating composition being able to protect surfaces coated therewith from undesired contamination by materials coming in contact therewith. The surfaces to be so protected by the coating composition, once cured, can, by way of illustration, be of parts of printing systems and the materials coming in contact with such surfaces can be ink images or residues thereof.
Claims22
A condensation curable coating composition able to wet a surface to be coated therewith, the composition comprising:
- a) a polydimethylsiloxane (PDMS) having a silanol moiety, the silanol moiety being present in the PDMS at a weight per weight amount of 0.1 to 8.0 wt. %;
- b) a silicone resin having a silanol moiety, the silanol moiety being present in the silicone resin at a weight per weight amount of 0.5 to 10.0 wt. %;
- and
- c) a liquid carrier;
- wherein the PDMS and the silicone resin are substantially non-miscible one with the other, so that the condensation curable coating composition forms an oil-in-oil emulsion.
A kit for the preparation of a condensation curable coating composition, the kit comprising:
- I—a first compartment including a polydimethylsiloxane (PDMS) having a silanol moiety, the silanol moiety being present in the PDMS at a weight per weight amount of 0.1 to 8.0 wt. %, the first compartment optionally further including at least one curing agent provided that the PDMS is a non-reactive PDMS;
- II—a second compartment including a silicone resin having a silanol moiety, the silanol moiety being present in the silicone resin at a weight per weight amount of 0.5 to 10.0 wt. %;
- III—a third compartment including a liquid to further disperse a mixture to be formed by mixing contents of the first and second compartment;
- and optionally
- IV—a fourth compartment including at least one curing agent;
- wherein the PDMS of the first compartment and the silicone resin of the second compartment are substantially non-miscible one with the other, so that the condensation curable coating composition forms an oil-in-oil emulsion upon mixing thereof and upon dispersion within the liquid carrier of the third compartment.
Dependencies are inferred from the claim text.