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US 8,568,888 B2Granted
Dendritic polyurethane coating
AssigneeNanovere Technologies, Inc.
InventorThomas F. Choate
Life of this patent
Estimating the term…
Abstract
The invention herein relates to a surface protective dendritic polymer coating compositions and to the cross-linked surface protective coatings formed thereby.
Claims31
A surface-protective coating composition, comprising:
- (1) a first component comprising:
- a globular dendritic polymer having a peripheral cross-linkable hydroxyl functionality of about 32 to about 64;
- optionally, an acrylic compound having a peripheral cross-linkable hydroxyl functionality of about 2 to about 6;
- optionally, a plurality of metal oxide nanoparticles optionally encapsulated in a cross-linkable hydroxyl functional polymer and/or a cross-linkable hydroxyl functional fluorosurfactant;
- optionally, a sterically hindered amine light stabilizer;
- optionally, a UV absorber;
- optionally, a cross-linking catalyst;
- and
- a first substantially anhydrous solvent in which the above materials are dissolved or, in the case of the nanoparticles, are dispersed;
- and
- (2) a second component comprising:
- a cross-linking agent capable of reacting with hydroxyl groups;
- and
- a second substantially anhydrous solvent which may be the same as or different from the first substantially anhydrous solvent,
- wherein the first and second components are mixed together to form the coating composition.
12 more elements
A surface-protective coating composition, comprising:
- (1) a first component comprising:
- a densely branched, globular dendritic polymer having a peripheral cross-linkable hydroxyl functionality of 64;
- optionally, an acrylic compound having a peripheral cross-linkable hydroxyl functionality of about 2 to about 6;
- optionally, a plurality of metal oxide nanoparticles optionally encapsulated in a cross-linkable hydroxyl functional polymer and/or a cross-linkable hydroxyl functional fluorosurfactant;
- optionally, a sterically hindered amine light stabilizer;
- optionally, a UV absorber;
- optionally, a cross-linking catalyst;
- and
- a first substantially anhydrous solvent in which the above materials are dissolved or, in the case of the nanoparticles, are dispersed;
- and
- (2) a second component comprising:
- a cross-linking agent capable of reacting with hydroxyl groups;
- and
- a second substantially anhydrous solvent which may be the same as or different from the first substantially anhydrous solvent,
- wherein the first and second components are mixed together to form the coating composition.
12 more elements
Dependencies are inferred from the claim text.