摘要:
Pigment dispersions that when used in printing ink having a relative interfacial tension drop of less than 1.5, and offering an ink viscosity of less than 150 Pa.s, and containing at least 45 wt. % pigment.
摘要:
A process for preparing transparent Pigment Yellow 138 by grinding Pigment Yellow 138 in the presence of a grinding agent, preparing an aqueous slurry of the ground particles, and filtering the slurry resulting in a filter cake containing particles of transparent Pigment Yellow 138. In addition, a process for improving color strength of an ink and/or plastic composition is also disclosed by adding transparent Pigment Yellow 138 to the composition.
摘要:
This invention provides a device that enhances a computer user's visual environment by providing a useful and/or aesthetically pleasing frame for the computer display screen. In a preferred embodiment, the screen is removably attached to the bezel of a computer display in a manner that permits substantially the entire display screen to be viewed through an opening in the screen frame.
摘要:
The present invention provides a reversible piezochromic system that changes appearance upon application of a mechanical force. The reversible piezochromic system includes a cavity defined by a first substrate and a second substrate. The cavity includes at least a first fluid. The first fluid spreads when a mechanical force is applied to the system. The relaxation time of the first fluid depends upon the internal forces of the system. These internal forces at least include the surface energy differences between the substrates and the fluid or fluids, and the rheological properties of the fluid or fluids.
摘要:
Colored conductive fluids for electrowetting or electrofluidic devices, and the devices themselves, are disclosed. The colored conductive fluid includes a polar solvent and a colorant selected from a pigment and/or a dye. The polar solvent has (a) a dynamic viscosity of 0.1 cP to 1000 cP at 25° C., (b) a surface tension of 25 dynes/cm to 90 dynes/cm at 25° C., and (c) an electrowetting relative response of 20% to 80%. The colored conductive fluid itself can have an electrical conductivity from 0.1 μS/cm to 3,000 μS/cm and can have no greater than 500 total ppm of monatomic ions with ionic radii smaller than 2.0 Å and polyatomic ions with ionic radii smaller than 1.45 Å. The colored conductive fluid should not cause electrical breakdown of a dielectric in the device in which it is employed. An agent for controlling electrical conductivity can optionally be added to the colored conductive fluid.
摘要:
Colored fluids for electrowetting, electro fluidic, or electrophoretic devices, and the devices themselves, are disclosed. The colored fluid can include a nonaqueous polar solvent having (a) a dynamic viscosity of 0.1 cP to 50 cP at 250 C, (b) a surface tension of 25 dynes/cm to 55 dynes/cm at 250 C, and (c) an electrowetting relative response of 40% to 80%. Such colored fluids further include a colorant selected from a pigment and/or a dye. In another embodiment, the colored fluid can include a non-polar solvent and an organic colorant selected from a pigment and/or a dye. Such colored fluids can be black in color and have a conductivity from 0 pS/cm to 5 pS/cm and a dielectric constant less than 3. The use of the colored fluids offers improvements in reliability, higher levels of chroma in the dispersed state, and the ability to achieve higher contrast ratios in display technologies.
摘要:
A dry colorant composition is disclosed and contains (a) pigment; (b) inert carrier; and (c) rheological additive having the structure: P—(U—Y)s wherein P is the residue of an organic colorant, Y is a polyalkylene oxide or polyalkylene moiety, U is a linking moiety covalently bonding Y to P, and s is an integer from 1 to 3.
摘要:
Disclosed are methods for using color inconstancy pigments and/or dyes, such as rare earth doped color inconstancy pigments, in security applications including semi-overt and covert security application.
摘要:
The flow and handling characteristics of arylide yellow and orange pigment dispersions are improved by incorporating in them a small amount of a rheology modifier that is the product obtained by reacting an arylide yellow or orange pigment with a primary diamine and a glycidyl ether.
摘要:
An apparatus for displaying procedural information cards on a computer video monitor includes a central shaft having an upper end and a lower end, the upper end capped by an upper cross member having an upper planar arm extending in one direction from the shaft, and an upper arcuate arm extending the opposite direction. The lower end is terminated by a lower cross member having a lower planar arm and a lower arcuate arm. The apparatus includes means for affixing the apparatus to a surface on a computer video monitor. The arcuate arms of the apparatus extend outwardly from the monitor to facilitate installation and flipping of the cards. Each of the arcuate arms comprises a generally semi-circular ring, and means for preventing inadvertent removal of the cards from the arcuate arms.