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US 10,294,388 B2Granted
Compositions for containers and other articles and methods of using same
AssigneeSwimc LLC
InventorsJeffrey Niederst, Richard H. Evans, Robert M. O'Brien, Kevin Romagnoli, Mark S. Von Maier
Life of this patent
Estimating the term…
Abstract
This invention provides a polymer, which is preferably a polyether polymer. The polymer may be uses in coating compositions. Containers and other articles comprising the polymer and methods of making such containers and other articles are also provided. The invention further provides compositions including the polymer (e.g., powder coatings), which have utility in a variety of coating end uses, including, for example, valve and pipe coatings.
Claims27
An article comprising a food or beverage container, or a portion thereof, having a metal substrate and a coating applied on at least a portion of the metal substrate;
- wherein the coating is substantially free of bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof;
- and wherein the coating is formed from a coating composition that includes a polyether polymer prepared from ingredients including:
- (i) an extender comprising a dihydric phenol that does not include substituent groups at ortho ring positions relative to the phenol hydroxyl groups, and
- (ii) a diepoxide compound that includes a segment of the below Formula (I):
- wherein:
- each of the oxygen atoms depicted in Formula (I) is present in an ether linkage;
- each R1 is free of halogen atoms and is independently a carbon-containing group or a sulfur-containing group;
- v is independently 0 to 4;
- w is 4;
- R2 is an organic group that includes only 1 carbon atom or at least 8 carbon atoms, wherein R2 includes a carbon atom that is attached to a carbon atom of each of the phenylene groups depicted in Formula (I), with the proviso that if R2 includes only 1 carbon atom then each depicted phenylene group includes at least one R1 group that includes 1 or 2 carbon atoms and is located at an ortho ring position relative to the depicted oxygen atom;
- n is 1;
- t is 1;
- and
- R1 if present, can join with one or more other R1 groups and/or R2 to form one or more cyclic groups.
11 more elements
An article comprising a food or beverage container, or a portion thereof, having a metal substrate and an interior food-contact coating applied on at least a portion of the metal substrate;
- wherein the coating is substantially free of bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof;
- and wherein the coating is formed from a liquid thermoset coating composition that includes a polyether polymer prepared from ingredients including:
- (i) an extender comprising catechol, hydroquinone, resorcinol, or a mixture thereof, and
- (ii) a diepoxide compound that includes a segment of the below Formula (I):
- wherein:
- each of the oxygen atoms depicted in Formula (I) is present in an ether linkage;
- each R1 is free of halogen atoms and is independently a carbon-containing group or a sulfur-containing group that;
- v is independently 0 to 4;
- w is 4;
- R2 is an organic group that includes only 1 carbon atom or at least 8 carbon atoms, wherein R2 includes a carbon atom that is attached to a carbon atom of each of the phenylene groups depicted in Formula (I), with the proviso that if R2 includes only 1 carbon atom then each depicted phenylene group includes at least one R1 group that includes 1 or 2 carbon atoms and is located at an ortho ring position relative to the depicted oxygen atom;
- n is 1;
- t is 1;
- and
- R1, if present, can join with one or more other R1 groups and/or R2 to form one or more cyclic groups.
11 more elements
A coating composition, comprising:
- a polyether polymer that includes at least 25% by weight of aryl or heteroaryl groups and has a glass transition temperature of at least 60° C. and a number average molecular weight of at least 2,000, wherein the polymer is formed by reacting ingredients including:
- (i) an extender comprising a dihydric phenol that does not include substituent groups at ortho ring positions relative to the phenol hydroxyl groups, and
- (ii) a diepoxide compound that includes a segment of the below Formula (I):
- wherein:
- each of the oxygen atoms depicted in Formula (I) is present in an ether linkage;
- each R1 is free of halogen atoms and is independently a carbon-containing group or a sulfur-containing group;
- v is independently 0 to 4;
- w is 4;
- R2 is an organic group that includes only 1 carbon atom or at least 8 carbon atoms, wherein R2 includes a carbon atom that is attached to a carbon atom of each of the phenylene groups depicted in Formula (I), with the proviso that if R2 includes only 1 carbon atom then each depicted phenylene group includes at least one R1 group that includes 1 or 2 carbon atoms and is located at an ortho ring position relative to the depicted oxygen atom;
- n is 1;
- t is 1;
- and
- R1, if present, can join with one or more other R1 groups and/or R2 to form one or more cyclic groups;
- and
- a liquid carrier;
- wherein the coating composition is a thermoset food or beverage can coating composition suitable for use in forming an interior food-contact can coating, and wherein the coating composition is substantially free of bisphenol A, bisphenol F, bisphenol S, polyhydric phenols having estrogenic activity greater than or equal to that of bisphenol S, and epoxides thereof.
13 more elements
Dependencies are inferred from the claim text.