A temperature-indicator product comprising a visual indicator comprising a thermochromic colour-memory composition and comprising an electron-donating colouring organic compound (A), an electron-accepting colouring organic compound (B) and reaction medium compound (C). The visual indicator comprises a first portion comprising a first thermochromic colour-change composition in its lower temperature state and a second portion comprising a second thermochromic colour-change composition in its higher temperature state. The product is useful as a tamper-evident indicator or as a freeze indicator.

This disclosure describes three-dimensional printing kits, methods, and systems for three-dimensional printing with scent additives. In one example, a three-dimensional printing kit can include a powder bed material and a fusing agent to selectively apply to the powder bed material. The powder bed material can include polymer particles and a scent additive. The scent additive can be chemically stable at a melting point temperature of the polymer particles. The fusing agent can include water and a radiation absorber to absorb radiation energy and convert the radiation energy to heat.

This disclosure describes three-dimensional printing kits, methods, and systems for three-dimensional printing with scent additives. In one example, a three-dimensional printing kit can include a powder bed material and a fusing agent to selectively apply to the powder bed material. The powder bed material can include polymer particles and a scent additive. The scent additive can be chemically stable at a melting point temperature of the polymer particles. The fusing agent can include water and a radiation absorber to absorb radiation energy and convert the radiation energy to heat.

A white ink composition can include an aqueous ink vehicle including water and organic co-solvent, from 5 wt % to 30 wt % white metal oxide pigment, from 0.05 wt % to 1 wt % block copolymer dispersant adsorbed on a surface of the white metal oxide, and from 2 wt % to 30 wt % polyurethane binder. The block copolymer dispersant can have a weight average molecular weight from 5,000 Mw to 20,000 Mw and an acid number from 0 mg KOH/g to 40 mg KOH/g based on dry weight of the block copolymer dispersant.

A white ink composition can include an aqueous ink vehicle including water and organic co-solvent, from 5 wt % to 30 wt % white metal oxide pigment, from 0.05 wt % to 1 wt % block copolymer dispersant adsorbed on a surface of the white metal oxide, and from 2 wt % to 30 wt % polyurethane binder. The block copolymer dispersant can have a weight average molecular weight from 5,000 Mw to 20,000 Mw and an acid number from 0 mg KOH/g to 40 mg KOH/g based on dry weight of the block copolymer dispersant.

Discloses is a water-soluble color coating paint for coating a rubber foam thermal insulation material and a method for manufacturing the same, and specifically, a color coating paint and an insulation color coating paint which have excellent adhesion to a porous rubber foam thermal insulation material, and retain elasticity of the thermal insulation material, as well as very improved photocatalytic performance, and a method for manufacturing the same. The color coating paint may be applied to a surface regardless of the material or condition of the surface to be painted, and may be coated to a soft or porous surface due to elasticity provided therein. The coating film produced by the color coating paint blocks 95% or more of the emission of volatile organic compounds from the surface of the foam rubber thermal insulation material into the atmosphere.

Discloses is a water-soluble color coating paint for coating a rubber foam thermal insulation material and a method for manufacturing the same, and specifically, a color coating paint and an insulation color coating paint which have excellent adhesion to a porous rubber foam thermal insulation material, and retain elasticity of the thermal insulation material, as well as very improved photocatalytic performance, and a method for manufacturing the same. The color coating paint may be applied to a surface regardless of the material or condition of the surface to be painted, and may be coated to a soft or porous surface due to elasticity provided therein. The coating film produced by the color coating paint blocks 95% or more of the emission of volatile organic compounds from the surface of the foam rubber thermal insulation material into the atmosphere.

Methods and apparatus for producing a magnetic nanoparticle suitable for additive manufacturing techniques includes providing a solution having a plurality of metallic precursors to produce magnetic nanoparticles, a coordinating solvent, and a chelating agent. The solution is mixed and heated to grow nanoparticles wherein magnetic nanoparticles are formed. The solution is then cooled and a magnetic field is applied to the solution wherein ferrite nanoparticles are at least partially separated by size.

Methods and apparatus for producing a magnetic nanoparticle suitable for additive manufacturing techniques includes providing a solution having a plurality of metallic precursors to produce magnetic nanoparticles, a coordinating solvent, and a chelating agent. The solution is mixed and heated to grow nanoparticles wherein magnetic nanoparticles are formed. The solution is then cooled and a magnetic field is applied to the solution wherein ferrite nanoparticles are at least partially separated by size.

Ink formulations comprising bioactive particles, methods of printing the inks into three-dimensional (3D) structures, and methods of making the inks are provided. Also provided are objects, such as tissue growth scaffolds and artificial bone, made from the inks, methods of forming the objects using 3D printing techniques, and method for growing tissue on the tissue growth scaffolds. The inks comprise a plurality of bioactive ceramic particles, a biocompatible polymer binder, optionally at least one bioactive factor, and a solvent.