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US 2015/0021323 A1Published application
Compositions for Containers and Other Articles and Methods of Using Same
AssigneeValspar Sourcing, Inc.
InventorsJeffrey Niederst, Richard H Evans, Robert M. O'Brien, Kevin Romagnoli, Mark S. Von Maier
Life of this patent
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Abstract
This invention provides a polymer, which is preferably a polyether polymer, for use in coating compositions. Containers comprising the polymer and methods of making such containers are also provided. The invention further provides powder coating compositions including the polymer, which have utility in a variety of coating end uses, including, for example, valve and pipe coatings.
Claims32
(canceled)
An article comprising:
- a food or beverage container, or a portion thereof, having:
- a metal substrate;
- a coating composition disposed on at least a portion of the substrate, the coating composition comprising:
- a polyether polymer that includes at least 25% by weight of aryl or heteroaryl groups and is substantially free of bound bisphenol monomer, or a diepoxide thereof, and includes one or more segments of the below Formula (II):
- wherein:
- H denotes a hydrogen atom, if present,
- each R1, if present, is independently an atom or group having an atomic weight of at least 15 Daltons,
- v is 0 to 4, and
- wherein two or more R1 groups can join to form one or more cyclic groups.
6 more elements
(canceled)
15-16. (canceled)
19-20. (canceled)
28-29. (canceled)
A method comprising,
- providing a coating composition comprising:
- a polyether polymer having a number average molecular weight of at least 2,000 and a glass transition temperature of at least 60° C., wherein the polyether polymer is free of halogens, includes at least 25% by weight of phenylene groups, is substantially free of bound bisphenol monomer, or a diepoxide thereof, and includes one or more segments of the below Formula (II):
- wherein:
- H denotes a hydrogen atom, if present,
- each R1, if present, is independently an atom or group having an atomic weight of at least 15 Daltons,
- v is 0 to 4, and
- wherein two or more R1 groups can join to form one or more cyclic groups;
- and
- applying the coating composition to at least a portion of a metal substrate prior to or after forming the metal substrate into a food or beverage container or a portion thereof.
6 more elements
34-40. (canceled)
Dependencies are inferred from the claim text.