Crosslinked polyester compositions, method of manufacture, and uses thereof

A composition, comprising the thermally crosslinked reaction product of

• a poly(ethylene terephthalate), poly(1,4-butylene terephthalate), poly(ethylene naphthalate), poly(butylene naphthalate), (polytrimethylene terephthalate), poly(1,4-cyclohexylenedimethylene 1,4-cyclohexanedicarboxylate), poly(1,4-cyclohexylenedimethylene terephthalate), poly(cyclohexylenedimethylene-co-ethylene terephthalate), poly(butylene-co-poly(oxytetramethylene) terephthalate), poly(butylene-co-poly(oxyethylene) terephthalate), or a combination comprising at least one of the foregoing;
• and
• a compound comprising an epoxy group, a compound comprising an epoxy group and a silane group, a copolymer comprising units derived from the reaction of an ethylenically unsaturated compound and glycidyl (meth)acrylate, a terpolymer comprising units derived from the reaction of two different ethylenically unsaturated compounds and glycidyl (meth)acrylate, a styrene-(meth)acrylic copolymer containing a glycidyl group incorporated as a side chain, an oligomer containing a glycidyl group incorporated as a side chain, a diglycidyl ether of bisphenol A, a novolac epoxy resin, a phenolic epoxy polymer, or a combination comprising at least one of the foregoing materials.

A composition comprising a thermally crosslinked reaction product of a poly(1,4-butylene terephthalate), and beta-(3,4-epoxycyclohexyl)ethyl triethoxysilane.

A method for the manufacture of the thermally crosslinked polyester composition, comprising contacting the polyester and the carboxy-reactive material at a temperature and for a time sufficient to crosslink the polyester with the carboxy-reactive material.

A composition, comprising

• from 0.0005 to 20 weight percent of a visual effect additive;
• and
• from 80 to 99.9995 weight percent of a thermally crosslinked reaction product of a polyester and a carboxy-reactive material, each amount being based on the combined weight of the visual effect additive ant the thermally crosslinked reaction product, wherein the reaction product at least partially encapsulates the visual effect additive.

A method for the manufacture of a visual effect additive composition, comprising at least partially encapsulating 0.0005 to 20 weight percent of a visual effect additive with 80 to 99.9995 weight percent of the thermally crosslinked reaction product of a polyester and a carboxy-reactive material, each based on the combined weight of the visual effect additive and the reaction product.