152 results about "N-propyl acetate" patented technology

A covert material for printing onto a printing medium is provided, the covert material comprising a covert pigment and a binder encapsulating the covert pigment into a particle, where the binder comprises at least one of cellulose acetate butyrate (CAB), butyral vinyl acetate, acetyl butyrate, and acetate butyrate. Alternatively, the binder comprises at least one of polyester, polyolefin, acetyl butyrate, acetate butyrate, polystyrene copolymer, and polystyrene-polyvinylpyridine. The covert material can comprise additional components, such as ethyl acetate and/or n-propyl acetate. In one embodiment, the covert pigment comprises about 0.5-5% of the covert material. In one embodiment, the binder comprises about 5-30% of the covert material. In one advantageous embodiment, the covert pigment comprises at least 2% of the covert material and the binder comprises about 20-25% of the covert material. The covert material can further comprise at least one of a colorant, a surface additive, and a magnetic particle. The covert material can be part of a toner or ink. In at least some embodiments, the particle can have many different sizes, including sizes greater than 1 micron, greater than 5 microns, and greater than 20 microns. In one embodiment, the covert printing material is constructed and arranged to be printed using a printer having a predetermined resolution, wherein the particle has a size that is substantially the same as the size of a single pixel or dot printed using the predetermined resolution. The covert material can be constructed and arranged to satisfy a predetermined number of the NCITS 322 tests.

The invention discloses solvent type gravure pearlescent ink, belonging to the field of ink. The solvent type gravure pearlescent ink comprises the following components in percentage by weight: 10%-20% of pearlescent pigments, 10%-20% of solid resin, 10%-20% of ethyl acetate, 10%-25% of ethanol, 5%-10% of isopropanol, 20%-25% of n-propyl acetate, 5%-10% of propanediol butyl ether and 0.1%-5% of a compound aid, wherein the compound aid is a mixture of a dispersing agent, a wetting agent, a color spreading agent and a flattening agent. The invention further discloses a preparation method of the solvent type gravure pearlescent ink. The preparation method comprises the following steps: preparation of resin liquid, dispersion of the pearlescent pigments, mixing, and sand grinding. By virtue of environment-friendly solvents, the solvent type gravure pearlescent ink is free of benzene and halogenated hydrocarbon, low in toxicity and small in smell; the volatilization velocity of the ink is controlled by virtue of volatilization gradients of the different solvents, and the ink presents the relatively good glossiness and pearlescent effect; the preparation method is simple and practical; the production cost is effectively lowered, the ink is stable in quality and has strong universality in the field of gravure printing; a printed product has a good surface effect.