Microcapsule-containing composition, thermal recording material using the same and process of preparing microcapsule-containing composition
AssigneeFuji Photo Film Co., Ltd.
InventorKoreshige Ito
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Abstract
Provided are a microcapsule-containing composition comprising microcapsules, each having a microcapsule wall comprising, as a constituent, at least one selected from polyurethane and polyurea produced by polymerizing a compound having active hydrogen and an isocyanate compound, and a compound of a transition element from Group IV in the long-form Periodic Table; and a thermal recording material wherein this composition is used to suppress changes in thermal recording sensitivity with the passage of time and exhibit excellent color reproduction.
Claims20
A microcapsule-containing composition comprising:
- microcapsules each having a microcapsule wall comprising, as a constituent, at least one selected from polyurethane and polyurea produced by polymerizing a compound having active hydrogen and an isocyanate compound;
- and
- a compound of a transition element from Group IV in the long-form Periodic Table.
A thermal recording material comprising at least one thermal recording layer made from a microcapsule-containing composition comprising microcapsules each having a microcapsule wall comprising, as a constituent, at least one selected from polyurethane and polyurea produced by polymerizing a compound having active hydrogen and an isocyanate compound;
- and a compound of a transition element from Group IV in the long-form Periodic Table.
A process of preparing a microcapsule-containing composition comprising the step of:
- polymerizing a compound having an active hydrogen and an isocyanate compound in the presence of a compound of a transition element from Group IV in the long-form Periodic Table so as to produce microcapsules having a microcapsule wall comprising, as a constituent, at least one selected from polyurethane and polyurea.
Dependencies are inferred from the claim text.