Polymer fine particles having structural color development property
AssigneeMitsubishi Chemical Corporation
InventorsShota Nakahara, Masaya Ota, Kousuke Minetaki, Kenta Yamamoto
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Abstract
Polymer fine particles having a number average particle diameter of 50 to 450 nm and a CV value of particle diameter on a number basis of 5% or less, or polymer fine particles having a structural color development property when arranged. An acid value of the polymer fine particles is 5 to 38 mg KOH/g. An emulsion in which the polymer fine particles are dispersed in a medium mainly containing water. In addition, a structure in which the polymer fine particles are arranged and develop color.
Claims15
Polymer fine particles having a number average particle diameter of 50 to 450 nm and a CV value of particle diameter on a number basis of 5% or less, wherein
- the polymer fine particles are composed of a polystyrene-based polymer which contains 90.0 mass % or more of styrene repeating units, based on a total mass of the polystyrene-based polymer and which contains a monomer unit derived from a metal salt of styrenesulfonic acid,
- the polymer fine particles have an acid value of 5 to 14.1 mg KOH/g, and
- a Tg of the polymer fine particles is 60° C. or higher.
Polymer fine particles having a structural color development property when arranged, wherein
- the polymer fine particles are formed of a polystyrene-based polymer which contains 90.0 mass % or more of styrene repeating units, based on a total mass of the polystyrene-based polymer and which contains a monomer unit derived from a metal salt of styrenesulfonic acid,
- the polymer fine particles have an acid value of 5 to 14.1 mg KOH/g, and
- a Tg of the polymer fine particles is 60° C. or higher.
Dependencies are inferred from the claim text.