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US 12,077,676 B2Granted
Polycyclocarbonate compounds and polymers and compositions formed therefrom
AssigneeSwimc LLC
InventorsSebastien Gibanel, Benoit Prouvost
Life of this patent
Estimating the term…
Abstract
Polycyclocarbonate compounds and upgraded molecular weight polymers made from such compounds are provided. The polymers have particular utility in coating compositions, especially for use on food and beverage contact substrates that are formed into or will be formed into containers or container components.
Claims22
A method of coating a food or beverage container, the method comprising:
- providing a coating composition that includes a polyether polymer that includes a reaction product of ingredients including:
- (i) an extender having at least two functional groups reactive with a cyclocarbonate group and (ii) a polycyclocarbonate compound that includes a cyclic group other than a cyclocarbonate group, wherein the polyether polymer is free of urethane linkages in a polymer backbone;
- and
- applying the coating composition to a metal substrate prior to or after forming the metal substrate into a food or beverage container or portion thereof.
1 more element
A method of coating a riveted can end of a food or beverage container or portion thereof, the method comprising:
- providing a coating composition that includes a polyether polymer that includes a reaction product of ingredients including:
- (i) an extender having at least two functional groups reactive with a cyclocarbonate group and (ii) a dicyclocarbonate compound that includes a cyclic group other than a cyclocarbonate group, wherein the polyether polymer is free of urethane linkages in a polymer backbone;
- and
- applying the coating composition to a metal substrate prior to or after forming the metal substrate into a riveted food or beverage container end;
- wherein the polymer has a polydispersity index (PDI) of 1.5 to 5.
2 more elements
A method comprising:
- causing a coating composition that includes a polyether polymer that comprises a reaction product of ingredients including:
- (i) an extender having at least two functional groups reactive with a cyclocarbonate group and (ii) a dicyclocarbonate compound that includes a cyclic group other than a cyclocarbonate group, wherein the polyether polymer is free of urethane linkages in a polymer backbone;
- wherein the polyether polymer has a polydispersity index (PDI) of 1.5 to 5, a glass transition temperature of at least about 40° C., and a number average molecular weight of at least about 2000;
- and
- applying the coating composition to a metal substrate to form a food-contact coating prior to or after forming the metal substrate into a food or beverage container or portion thereof.
2 more elements
Dependencies are inferred from the claim text.