The disclosure provides dyes for marking hydrocarbon compositions. More particularly, the disclosure relates to non-mutagenic dyes for marking hydrocarbon compositions.

The disclosure provides dyes for marking hydrocarbon compositions. More particularly, the disclosure relates to non-mutagenic dyes for marking hydrocarbon compositions.

The present invention concerns a method for the partial dyeing, in particular for the colour laser engraving, of plastic components, in particular thermoplastic plastic components, more particularly thermoplastic plastic components, comprising a layer construction as well as the resulting partially dyed, preferably colour laser engraved plastic components, in particular thermoplastic plastic components.

A photochromic mixture including a photochromic material and a thermosetting transparent polymer material, which are uniformly mixed and dissolved in a solvent, is provided. A formation method of a photochromic device based on the photochromic mixture and a light-transmissive head-mounted display device with the photochromic device are further provided. In the photochromic mixture, the change in the structure of the photochromic material under UV light and room light causes a significant change in its absorption spectrum so the color changes. This property is utilized for the benefits: First, the contrast of the head-mounted display device under strong light irradiation is improved. The display effect is enhanced. Second, the damage to human eye by UV light at the natural environment is reduced. Third, under the same optical requirement, the required energy consumption of self-light-emitting elements in the light-transmissive head-mounted display device is correspondingly reduced. It's more energy saving and environmental protecting.

Provided are stimuli-responsive composite particles which contain microcapsules containing an electron-donating dye precursor and particles of an electron-accepting compound causing the electron-donating dye precursor to develop color, in which the microcapsules are attached to at least a portion of the surface of each of the particles of the electron-accepting compound. Also provided is a manufacturing method of the stimuli-responsive composite particle.

The present invention concerns a method for the partial dyeing, in particular for the colour laser engraving, of plastic components, in particular thermoplastic plastic components, more particularly thermoplastic plastic components, comprising a layer construction as well as the resulting partially dyed, preferably colour laser engraved plastic components, in particular thermoplastic plastic components.

A liquid concentrate of pigments of mineral and organic hybrid solid particles of 0.5 to 2 m, including a copolymer consisting of: 5 to 40 wt % of anchor sequence(s) consisting of a linear copolymer formed from a first monomer with a basic nitrogenous group added from compound(s) selected from vinylpyridines, and a second monomer of the anchor sequence consists of an ethylene monomer containing an aromatic group, the weight content of the first monomer relative to the second monomer being 40-60 wt %, 25 to 90 wt % of the hydrophobic sequence(s) obtained from a polymer-substituted ethylene macromonomer of which the monomer units contain COOR.sub.10 groups, where R.sub.10 is an optionally substituted C1-C10 alkyl, and 5 to 70 wt % of hydrophilic sequence(s) obtained from an ethylene macromonomer substituted by a hydrophilic sequence comprising a polyethylene glycol sequence substituted by a terminal alkoxy group, or connected to a polypropylene glycol sequence.

A printing ink composition contains a disperse dye, a dispersant, and water, in which the dispersant contains one or more compounds represented by:

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wherein each Ar independently represents an aromatic ring having 6 to 24 carbon atoms, R1 and R2 independently represent a substituent selected from the group consisting of H, OCH.sub.3, OH, COOH, SO.sub.3H, OSO.sub.3H, an alkyl group having 1 to carbon atoms, and a salt thereof, R3 represents a substituent selected from the group consisting of OH, COOH, SO.sub.3H, OSO.sub.3H, and a salt thereof, R4 represents a substituent selected from the group consisting of H, OCH.sub.3, OC.sub.2H.sub.5, an alkyl group having 1 to 3 carbon atoms, and a salt thereof, the substituent introduction numbers a, b, c, and d each represent an integer of 1 to 8, and the number of repetitions m represents an integer of 1 to 50.

The present disclosure discloses application of a deep eutectic solvent in textile dyeing, belonging to the technical field of ecological dyeing and finishing of textiles. A natural hydrophobic deep eutectic solvent system (HDES) is first used as a dyeing medium to perform reactive dyeing on cotton. Firstly, the prepared natural hydrophobic deep eutectic solvent is mixed with a small amount of dye aqueous solution at high speed to prepare dye liquor, and then cotton fabric soaked with alkali liquor is put into a dye bath for dyeing. The dyeing method doesn't require addition of inorganic salts and other dyeing auxiliaries, but uses a small amount of water and alkali agent to achieve the same dyeing effect as traditional water bath, and the dyeing medium is safe and environment-friendly. After dyeing, cyclic dyeing can be achieved by simply separating the dye bath, which truly realizes green dyeing of reactive dyes.

The disclosure provides dyes for marking hydrocarbon compositions. More particularly, the disclosure relates to non-mutagenic dyes for marking hydrocarbon compositions.