Coating composition
AssigneeThe University of Melbourne
InventorsSandra KENTISH, Yidi LEI, Colin A. SCHOLES, Liang LIU, Karteek BOGA
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Abstract
Disclosed is a coating composition for forming a hydrogen-barrier coating on a surface. The coating composition can comprise a crosslinked polyhydroxy polymer, said crosslinked polyhydroxy polymer obtained by reacting a polyhydroxy polymer with a hydroxyl-reactive crosslinking agent; and a carrier.
Claims39
A coating composition for forming a hydrogen-barrier coating on a surface, said coating composition comprising:
- a crosslinked polyhydroxy polymer, said crosslinked polyhydroxy polymer obtained by reacting a polyhydroxy polymer with a hydroxyl-reactive crosslinking agent;
- and
- a carrier,
- wherein the coating composition exhibits shear-thinning behaviour.
A coating composition according to any one of the preceding claims, wherein the polyhydroxy polymer has a number average molecular weight (Mn) of about 30,000 g/mol to about 500,000 g/mol.
A coating composition according to any one of the preceding claims, wherein the hydroxyl-reactive crosslinking agent is a diepoxide crosslinking agent.
A coating composition according to any one of the preceding claims, wherein the mole ratio of the hydroxyl groups in the polyhydroxy polymer to hydroxyl-reactive groups of the hydroxyl-reactive crosslinking agent is about 50:2 to 5:2.
A coating composition according to any one of the preceding claims, wherein the carrier is selected from the group consisting of water, ethanol and combinations thereof.
A coating composition according to any one of the preceding claims, wherein the crosslinked polyhydroxy polymer comprises less than about 20% by weight of the coating composition.
A coating composition for forming a hydrogen-barrier coating on a metallic surface, said coating composition comprising:
- a crosslinked poly(vinyl alcohol) polymer, said crosslinked poly(vinyl alcohol) polymer obtained by reacting a poly(vinyl alcohol) polymer with a diepoxide crosslinking agent;
- and
- a carrier.
A precursor composition for forming a coating composition, said precursor composition comprising:
- a poly(vinyl alcohol) polymer;
- a diepoxide crosslinking agent;
- and
- a carrier.
Dependencies are inferred from the claim text.