Room temperature curable silane terminated and stable waterborne polyurethane dispersions which contain fluorine and/or silicone and low surface energy coatings prepared therefrom

A dispersion comprising polymer of formula (I)

• (SIL-X)-ISO-Y-(POL-X-ISO-Y)n˜(CE-X-ISO-Y)m˜(WDC-X-ISO-Y)q-(SIL) (I)
• wherein (POL-X-ISO-Y), (CE-X-ISO-Y), and (WDC-X-ISO-Y) can be randomly distributed or form blocks;
• wherein SIL independently represents
• R3 is independently selected from the group consisting of hydrogen;
• alkyl groups comprising about 1 to about 4 carbon atoms;
• acyl groups comprising about 2 to about 5 carbon atoms;
• and oxime groups of the formula —N═CR5R6, wherein R5 is independently selected from the group consisting of monovalent alkyl groups comprising about 1 to about 12 carbon atoms and wherein R6 is independently selected from the group consisting of monovalent alkyl groups comprising about 1 to about 12 carbon atoms;
• R7 is independently selected from the group consisting of monovalent alkyl groups comprising about 1 to about 12 carbon atoms;
• R4 is independently selected from the group consisting of divalent radicals comprising about 2 to about 20 carbon atoms, wherein said R4 radicals contain no isocyanate reactive functional groups;
• p independently represents an integer of 1 to 3;
• X is independently selected from the group consisting of divalent radicals selected from the group consisting of
• wherein R is independently selected from the group consisting of phenyl, linear aliphatic groups comprising about 1 to about 12 carbon atoms, branched aliphatic groups comprising about 1 to about 12 carbon atoms, and cycloaliphatic groups;
• ISO independently represents a moiety derived from a polyisocyanate component comprising a compound having 2 isocyanate groups and optionally further comprising a compound having greater than 2 isocyanate groups;
• wherein each ISO moiety is optionally fluorinated and optionally contains silicone;
• Y is independently a divalent radical selected from the group consisting of
• wherein R is as defined above;
• POL independently represents a moiety derived from a component comprising a first compound having 2 isocyanate reactive functional groups selected from the group consisting of polyols, polyamines and polythiols, each isocyanate reactive functional group having at least one active hydrogen, and optionally a second compound having greater than 2 isocyanate reactive functional groups selected from the group consisting of polyols, polyamines, and polythiols, each isocyanate reactive functional group having at least one active hydrogen;
• wherein at least one of the following of (i), (ii), and (iii) is true:
• (i) at least one POL moiety contains fluorine;
• (ii) at least one POL moiety contains silicone;
• (iii) at least one POL moiety contains both fluorine and silicone;
• n represents an integer of about 2 to about 85;
• CE independently represents a moiety derived from a chain extender component comprising a difunctional chain extender having 2 isocyanate reactive functional groups, each isocyanate reactive functional group having at least one active hydrogen and optionally a polyfunctional chain extender having at least 3 isocyanate reactive functional groups, each isocyanate reactive functional group having at least one active hydrogen;
• wherein each CE moiety is optionally fluorinated and optionally contains silicone;
• m represents an integer of about 1 to about 84;
• WDC independently represents a moiety derived from a water-dispersing compound, wherein the water dispersing compound possesses at least one water dispersing group and at least two isocyanate reactive functional groups, each isocyanate reactive functional group containing at least one active hydrogen;
• q represents an integer of about 2 to about 85;
• wherein at least one of the following is true:
• at least one ISO moiety contains fluorine;
• at least one ISO moiety contains silicone;
• at least one ISO moiety contains both fluorine and silicone;
• at least one CE moiety contains fluorine;
• at least one CE moiety contains silicone;
• at least one CE moiety contains both fluorine and silicone;
• wherein a sufficient amount of at least one of the following:
• (i) fluorine;
• (ii) silicone;
• (iii) fluorine plus silicone:
• is present in the dispersion such that a coating of the dispersion has a surface energy of less than 35 dynes/cm.