32results about How to "Excellent water fastness" patented technology

New photosensitive optically variable inks are capable of printing images having improved resistance to water. The inks produce images which can be viewed with both visible and ultraviolet light to have physically coincident positive and negative images. They contain at least two types of colorants and other suitable ingredients to enable preparation for printing. The first colorant comprises a fluorescent dye emitting light within a characteristic emission band when excited by fluorescent-exciting radiation. The second colorant, which comprises a colloidal pigment alone or with a dye, has a light absorption band at longer wavelengths than the characteristic emission band of the first colorant or overlapping the emission wavelength of the first colorant, effectively to result in a dark color. The composition also contains an aqueous liquid vehicle comprising water and a water-soluble vehicle in sufficient amounts to achieve an ink viscosity and surface tension effective for application of the ink to a substrate in a predetermined pattern by ink jet printing.

A molding method for moldable bio-substance materials comprises crushing the bio-substance materials into an incompact state, and then extruding and molding the same. There is at least a wedged extruding cavity is formed between the extruding head and the extruding surface of the molding die. The movement between the extruding head and the extruding surface of molding die is a differential speed movement, and the particles of the materials are extruded between these two surfaces and are grinded, twisted up, stretched, flaked, and then extruded to the small end of the wedged extruding cavity, and further into the molding cavity of molding die to be molded therein. The molding method and equipment of this invention can give the molded product certain strength and water-fastness without using any chemical binders. It is convenient for storing the product and keeping the product in a functional state, and thus it minimizes the cost for fabrication, transportation and storage.

An ink jet ink composition which provides an image having improved wet abrasion resistance comprising water, a cationic, water-soluble dye and from about 0.1 to about 10% by weight of a hardener.

The present invention is drawn to multimeric dyes, ink-jet inks, and systems that can be used to print images having good water fastness and humid fastness, as well as good color characteristics. Specifically, a multimeric dye for ink-jet printing can comprise a first dye molecule chemically coupled to a second dye molecule through a linker group, wherein the multimeric dye is stable in the presence of interfering metals. These multimeric dyes can be used to form ink-jet inks and can be used in printing systems in accordance with embodiments of the present invention.

The invention discloses an acid dye used for dyeing nylon fiber. Its general chemical structure formula is: R as a diazo component is an aromatic sulfonic acid group. The present invention also simultaneously provides the preparation method of the above-mentioned acid dye. The acid dye prepared by the invention does not contain heavy metals, and as a new type of acid dye, it has excellent water treatment fastness, excellent light fastness and bright shade for nylon fiber dyeing.