摘要:
An optical article with a plurality of optically detectable marks on a first surface of the optical article, wherein a mark of the plurality of marks has a thickness of less than or equal to about 1 micrometer, and wherein the plurality of optically detectable marks have uniform thickness.
摘要:
A method for preparing a polymer-organoclay composite composition comprises combining a solvent and an unexfoliated organoclay to provide a first mixture, wherein the unexfoliated organoclay comprises alternating inorganic silicate layers and organic layers, and has an initial spacing between the silicate layers; exposing the first mixture to an energized condition of a sufficient intensity and duration to increase the initial spacing of the inorganic silicate layers, to provide a second mixture; contacting the second mixture with a polymer composition so that the polymer composition fills at least one region located between at least one pair of silicate layers, wherein the polymer composition is at least partially soluble in the solvent; and removing at least a portion of the solvent from the second mixture, wherein the inorganic silicate layers remain separated by the polymer after removal of the solvent.
摘要:
A thermally responsive ink composition consisting of at least one halochromic optical-state change material, at least one base, at least one solvent, and at least one binder material. The pH of the ink composition is such that the halochromic optical-state change material remains in its basic state until it is acted upon by a thermal stimulus. The ink composition is capable of transforming from a first optical state to a second optical state upon a change in pH caused by exposure to a thermal stimulus. A thermally responsive ink composition consisting of at least one quaternary onium salt of an halochromic optical-state change material, at least one solvent, and at least one binder material is also disclosed. Coating compositions prepared using these ink compositions and optical articles comprising these coating compositions are also disclosed.
摘要:
In one embodiment, the present invention provides a method of making a polymer-organoclay composite composition comprising (a) contacting under condensation polymerization conditions a first monomer, a second monomer, a solvent, and an organoclay composition, said organoclay composition comprising alternating inorganic silicate layers and organic layers, to provide a first polymerization reaction mixture, wherein one of said first monomer and second monomers is a diamine and the other is an dianhydride; (b) carrying out a stoichiometry verification step on the first polymerization reaction mixture; (c) optionally adding additional reactant (monomer 1, monomer 2, or chainstopper) to the first polymerization reaction mixture to provide a second polymerization reaction mixture; and (d) removing solvent from the first polymerization reaction mixture or the second polymerization reaction mixture to provide a first polymer-organoclay composite composition comprising a polymer component and an organoclay component wherein the organoclay component is at least 10% exfoliated.
摘要:
A thermally responsive ink composition consisting of at least one halochromic optical-state change material, at least one base, at least one solvent, and at least one binder material. The pH of the ink composition is such that the halochromic optical-state change material remains in its basic state until it is acted upon by a thermal stimulus. The ink composition is capable of transforming from a first optical state to a second optical state upon a change in pH caused by exposure to a thermal stimulus. A thermally responsive ink composition consisting of at least one quaternary onium salt of an halochromic optical-state change material, at least one solvent, and at least one binder material is also disclosed. Coating compositions prepared using these ink compositions and optical articles comprising these coating compositions are also disclosed.
摘要:
An optical article for playback in a player includes a permanent player-readable code comprising a first set of a plurality of optically-detectable marks disposed on the optical article; a second set of plurality of optically-detectable marks disposed on a surface of the optical article; wherein the plurality of optically-detectable marks are in a pre-determined combination of a first state and a second state; and at least one first control logic comprising at least one sector; wherein each optically detectable mark is associated with a particular first control logic; wherein each first control logic is executed only when its associated optically-detectable mark is in a pre-determined state; wherein a customized player-readable code is determined using a combination of the plurality of optically-detectable marks and their associated first control logic; and wherein the optical article is activated when the customized player-readable code is in a pre-determined relationship with the permanent code.
摘要:
A thermochromic ink composition comprises at least one thermochromic optical-state change material, at least one thermally responsive pH modifier, at least one solvent, and at least one binder material, wherein the thermochromic ink composition has a viscosity between about 0.1 centipoise (cPs) and about 10,000 cps, and a maximum optical absorbance in a range from about 200 nm (nanometers) to about 800 nm, and wherein the thermochromic ink composition is capable of transforming from a first optical state to a second optical state upon exposure to a thermal stimulus. The thermochromic ink composition may be used to deposit a thermochromic coating composition which may be used as part of an anti-theft system for optical articles. Methods for thermal activation of the compositions are also provided.