: 79-97-0), 4-hexyl-1,3-dihydroxybenzene (4-hexylresorcinol, CAS no. Chromic material is generally dyes and pigments that change color when exposed to external stimulus. <]/Prev 1308353/XRefStm 2556>> Optical properties of deinked pulp containing thermochromic offset inks in the market. 0000019635 00000 n 0000008524 00000 n 0000527734 00000 n : 69898-40-4), 2′-(dibenzylamino)-6′-(diethylamino) fluorane (CAS no. h�bb�f`b``Ń3� ���ţ�1� ��. All rights reserved.
We offer thermometers with single color displays, multi-color displays, QR Codes and more in various sizes and shapes. 13. : 110726-28-8). Color Sequence: Black » Red » Green » Blue (25-30ºC / 77-86ºF) Cold Activated Thermochromic Ink is used on 0000009715 00000 n The plate is then heated to a temperature greater than the fusion point of the compound (C). Adding PVP to these solutions clearly improved the wettability of the solution, so that crack-free, uniform films were formed. The thermochromic pigment composition according to claim 1, wherein the electron-donor organic dye is selected from the group consisting of 3-(4-diethylamino-2-ethoxyphenyl)-3-(1-ethyl-2-methylindol-3-yl)-4-azaphthalide (Blue 63, CAS no. chemical processes based on the in situ formation of the coating microcapsules, e.g. 0000019338 00000 n 0000029231 00000 n Even more preferably, the aryl group according to the disclosure is a phenyl group. : 136-77-6), 4,4′-cyclohexylidenebisphenol (BZP, CAS no. These interactions between the polymer molecules through the oppositely charged functional groups, accompanied by the interactions between the carbonyl groups and the vanadyl ions, ensure the formation of high-quality cross-linked films after removal of the solvent. TABLE 4 Formulas of the compositions with the compound (1) and with dodecyl paraben Composition according to Comparative the disclosure composition (% by weight) (% by weight) Compound (A): 3-(4-diethylamino-2- 2.0 2.0 ethoxyphenyl)-3-(1-ethyl-methylindol- 3-yl)-4-azaphthalide (Blue 63, CAS no. The temperatures measured are indicated in Table 1 below. Photochromic paints exhibit a photochemical reaction to UV light changing from an essentially colorless state to colored. : 36431-22-8) and 3,3,-bis-(1-butyl-2-methyl-indol-3-yl)-3H-isobenzofuran-1-one (Red 40, CAS no. PVP, as a film-forming promoter, was added to the above solution to form a precursor. 0000022891 00000 n [135] studied the colorimetric properties of commercially available leucodye-based thermochromic inks and found out that the color of the inks was dependent on the temperature, as well as the thermal history of the sample, which gives rise to color hysteresis. Color changing inks are smart and react to environmental fluctuations with color change.
0000190466 00000 n We use cookies to help provide and enhance our service and tailor content and ads. : 69898-40-4) Compound (B): 4,4′- 5.0 5.0 (hexafluoroisopropylidene) diphenol (Bisphenol AF, CAS no. : 74462-02-5), and α,α,α′-tris(4-hydroxyphenyl)-1-ethyl-4-isopropylbenzene (CAS no. 0000015706 00000 n
Others less frequent in high-performance apparel applications are solvatochromism, mechanochromism, chronochromism, magnetochromism, and biochromism. Another method through solvent–thermal and pyrolysis process was also reported to fabricate large-scale and cost-effective thermochromic films (Zhang et al., 2015). endstream endobj 575 0 obj <> endobj 576 0 obj <> endobj 577 0 obj <> endobj 578 0 obj <> endobj 579 0 obj <>stream : 1571-75-1), 2,2′-dihydroxybiphenyl (CAS no. 0000044569 00000 n Coating - Coatings are a layer of something deposited upon a material surface to add or enhance desired properties. nebulization/drying (spray drying), gelation or congelation of drops, fluidized bed coating (spray-coating). Alkyl: a saturated aliphatic hydrocarbon group, linear or ramified, in C. Aryl: any functional or substituent group derived from at least one aromatic cycle; an aromatic cycle corresponds to any flat mono or polycyclic group comprising a delocalized π system in which each atom of the cycle comprises an orbital p, said orbitals p covering one another; among such aryl groups, the phenyl, biphenyl, naphthalene and anthracene groups can be mentioned. To test the thermochromic effect, a drop of the thermochromic pigment composition is placed on a microscope slide. Before we look at the many reasons why you would use thermochromic paint, it is worth reminding ourselves exactly what we are talking about. : 34372-72-0), N,N-dimethyl-4[2-[2-(octyloxy)phenyl]-6-phenyl-4-pyridinyl] benzenamine (Yellow CK37, CAS no. 0000002556 00000 n 11.
0000032795 00000 n 0000014170 00000 n Pigment – a dry insoluble color matter or substance usually pulverized which when suspended in a liquid vehicle becomes a paint, ink, etc. Smooth PVP gel films covering the whole substrate were formed by spin-coating them with the aqueous PVP solution. xanthan gum or gum Arabic. This is achieved with an ink that combines a leuco dye with a conventional ink pigment.
Color changing paint can be used to monitor surface temperature and alert operators to potential hazards, maintenance requirements, etc.
H�d��N�V���#��S,!�}���A�} &1S���\����+��m� +���-��7��ܟ�߇��.����}xz>/����a��_�O�q7���g�����ys�����>�ܟ�^7�����ˋo�x|�2���z9Η����?�ç��������2�އ�pw7�e��Ͽ{��q����|��z��Ώ���x�:on����pۖ���|:���q��q_�=^�_{��%�]�u�t�v�u�w9ty��˱˩˹˥˵��G;�����?v�����c�;�����?v�����#���{�����|yX����I9��r&eܻ�\��. : 1806-29-7), 4,4′-(1,4-phenylenediisopropylidene) bisphenol (CAS no.
0000038104 00000 n Perfect as a complement to electronic monitoring. endstream endobj 580 0 obj <> endobj 581 0 obj <>stream
Temperature Indicating Coatings, Pigments, Ink, Paint & Labels Photochromic Paint, Ink, Dyes, Powder, Slurry and Masterbatch Definitions. (C) at least one compound serving as a reaction medium, capable of bringing about a reversible electron-acceptance/donation reaction that can be attributed to compounds (A) and (B) or a temperature change regulation agent. 1. When brought back inside, the inks become clear again. Thermochromic ink (also called thermochromatic ink) is a type of dye that changes color when temperatures increase or decrease. 0000142570 00000 n At 20° C., the two compositions comprising the compound (1) and the dodecyl paraben are both colored blue. 0000618447 00000 n 0000046194 00000 n
Thermochromism is the most widely used one in textile applications; it normally includes microencapsulated leuco-dyes or liquid-crystal technologies. 0000620292 00000 n 0000036086 00000 n A visual observation takes place through the comparison of the intensity of the color when the plate is heated to a temperature greater than the fusion point of the compound (C) with a plate placed at room temperature. From V.G. The thermochromic pigment composition according to claim 1, comprising: 4.
10. startxref %PDF-1.7 %���� LCR Hallcrest Photochromic Inks change color when exposed to ultraviolet light, usually from the sun or a black light. 0000030586 00000 n H�\��j� ��>�w�ٜ%P�r����NR�eby��6l�*����s���)d�o݀�@�q�;��@�ڂ. Applications include, but are not limited to, metal fabrication and annealing, surface temperature management, machine equipment and operations.