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US 11,634,607 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.
Claims38
A beverage can end coil coating composition comprising:
- a water-based coating composition comprising a lubricant and a polyether polymer that has a glass transition temperature of at least 60° C. and is present as a portion of a polyether-acrylic copolymer;
- wherein the polyether polymer portion has a number average molecular weight of at least 2,000, does not include any structural units derived from bisphenol A, bisphenol F, bisphenol S, or any diepoxides thereof, and does not include any structural units derived from a polyhydric phenol having estrogenic agonist activity greater than or equal to that of bisphenol S, and wherein the polyether polymer portion includes a plurality of segments of the below Formula (I) dispersed throughout a backbone of the polyether polymer portion:
- wherein:
- each of the oxygen atoms depicted in Formula (I) is present in an ether linkage;
- H denotes a hydrogen atom, if present;
- the segment of Formula (I) does not include any halogen atoms;
- each R1 is independently an atom or group having an atomic weight of at least 15 Daltons;
- v is independently 2 to 4, and wherein the depicted phenylene group(s) include an R1 group located at each ortho ring position relative to each depicted oxygen atom;
- w is 4;
- R2, if present, comprises a carbon-containing group, a sulfur-containing group, an oxygen-containing group, a nitrogen-containing group, or a combination thereof, with the proviso that that if R2 has a structure of the formula —C(R7)(R8) —, where R7 and R8 are each independently a hydrogen atom, an organic group, a sulfur-containing group, a nitrogen-containing group, or any other suitable group that is substantially non-reactive with an epoxy group, and wherein R7 and R8 can optionally join to form a cyclic group, then R2 has a molecular weight of (i) less than 42 Daltons or (ii) greater than 125 Daltons to less than 500 Daltons;
- n is 0 or 1;
- with the proviso that if n is 0, the phenylene groups depicted in Formula (I) can optionally join to form a fused ring system in which case w is 3;
- t is 0 or 1;
- and
- two or more R1 or R2 groups can join to form one or more cyclic groups;
- and
- wherein the polyether polymer portion includes a plurality of segments of Formula (I) in which t is 1.
14 more elements
A method for making a coated riveted beverage can end comprising the steps of:
- a) applying to an aluminum coil substrate a water-based coating composition comprising a polyether polymer that has a glass transition temperature of at least 60° C. and is present as a portion of a polyether-acrylic copolymer;
- wherein the polyether polymer portion has a number average molecular weight of at least 2,000, does not include any structural units derived from bisphenol A, bisphenol F, bisphenol S, or any diepoxides thereof, and does not include any structural units derived from a polyhydric phenol having estrogenic agonist activity greater than or equal to that of bisphenol S, and wherein the polyether polymer portion includes a plurality of segments of the below Formula (I) dispersed throughout a backbone of the polyether polymer portion:
- wherein:
- each of the oxygen atoms depicted in Formula (I) is present in an ether linkage;
- the segment of Formula (I) does not include any halogen atoms;
- each R1 is independently an atom or group having an atomic weight of at least 15 Daltons;
- v is independently 2 to 4, and wherein the depicted phenylene group(s) include an R1 group located at each ortho ring position relative to each depicted oxygen atom;
- w is 4;
- R2, if present, comprises a carbon-containing group, a sulfur-containing group, an oxygen-containing group, a nitrogen-containing group, or a combination thereof, with the proviso that that if le has a structure of the formula
- —C(R7)(R8) —, where R7 and R8 are each independently a hydrogen atom, an organic group, a sulfur-containing group, a nitrogen-containing group, or any other suitable group that is substantially non-reactive with an epoxy group, and wherein R7 and R8 can optionally join to form a cyclic group, then le has a molecular weight of (i) less than 42 Daltons or (ii) greater than 125 Daltons to less than 500 Daltons;
- n is 0 or 1;
- with the proviso that if n is 0, the phenylene groups depicted in Formula (I) can optionally join to form a fused ring system in which case w is 3;
- t is 0 or 1;
- and
- two or more R1 or R2 groups can join to form one or more cyclic groups;
- and
- wherein the polyether polymer portion includes a plurality of segments of Formula (I) in which t is 1;
- b) hardening the coating composition;
- and
- c) forming the substrate into a coated riveted beverage can end.
17 more elements
Dependencies are inferred from the claim text.