摘要:
Methods and apparatuses for activating colorant in selected regions of an article in which the colorant is incorporated are described. The colorant activation can create various desired visual aspects.
摘要:
A method for preparing the tinted contact lens with the covalently bonded novel reactive tinting compound is disclosed. The reactive tinting compound with mono vinyl functionality is prepared by reacting the reactive dye with a hydrophilic monomer containing both pendent hydroxyl and vinyl groups under an alkaline condition. The water soluble reactive dyes containing either difluoro-chloropyrimidine or β-sulphatoethylsulphone reactive groups are used for synthesis of the reactive tinting dye. The lens forming materials are photo-polymerized in the presence of the reactive tinting compound to prepare a tinted contact lens. The reactive tinting compound is copolymerized with the lens forming monomers in a single photo-polymerization step that requires no subsequently alkaline soaking or developing step as used in the prior art. In addition, the covalently bonded dye is stable and durable in the lens and does not fade or leach out after multiple high-pressure thermal sterilizations.
摘要:
According to the invention, a metal salt and an oxygen source are applied to penetrate or impregnate a suitable substrate sequentially in effective amounts so as to react in contact with the substrate and produce a mineral compound fixed within the surface of the substrate. The inventive combination of a mutually compatible metal salt, oxygen source, and substrate brings about an in situ reaction, and modifies the substrate to bring about a lasting desired effect. The mineral compound that is produced according to the invention is linked to the substrate, is stable and long-lasting or permanent, and is immobilized or insolubilized in the substrate. The mineral compound is bound or contained within and on the surface of the substrate, so it may be said to be ingrained in the fibers or matrix of the substrate, or embedded within the substrate. The desired effect is preferably a color. A wide variety of metal salts may be used depending on the desired effect. The oxygen source is preferably a peroxide, and the substrate is preferably a cellulose product such as wood, cotton, or paper; leather; or masonry. The invention contemplates methods of treating substrates, treatment kits, and treated products. With wood products, the invention provides a water-based stain of low toxicity useful for soft woods.
摘要:
A process for the surface functionalization of a polymeric substrate, which process comprises: a) contacting the substrate with a diarylcarbene precursor, b) generating a carbene reactive intermediate from the diarylcarbene precursor so that it reacts with the substrate to functionalize the surface, and c) further functionalizing the activated substrate obtained in step (b).
摘要:
The present invention relates to methods of dyeing a material, comprising (a) soaking the material in an aqueous solution which comprises one or more mono-, di- or polycyclic aromatic or heteroaromatic compounds; and (b) treating the soaked material in an aqueous solution with (i) a hydrogen peroxide source and an enzyme exhibiting peroxidase activity or (ii) an enzyme exibiting oxidase activity on the one or more aromatic or heteroaromatic compounds; wherein the material is a fabric, yarn, fiber, garment or film made of fur, hide, leather, silk or wool.
摘要:
Disclosed are processes for tinting hydrogel materials, such as contact lenses, by dissolving a leuco sulfate ester of a vat dye in an compatible monomer solution, adding an oxidizing initiator to the monomer solution, and oxidizing and polymerizing the monomer solution and dye in the same solution. In one aspect, the oxidation and polymerization are conducted simultaneously whereas in another embodiment, the oxidation of the soluble leuco sulfate ester of a vat dye to the insoluble vat dye and polymerization are conducted sequentially in the same reaction medium.
摘要:
A method for manufacturing dyed woven or knitted fabric includes preparing woven or knitted fabric using metallic yarn and normal-pressure dyeing polyester yarn having an elasticity modulus of 400 to 600 kg/mm2 and an elongation of 30 to 40%, fabricating a dye bath by putting a dye solution obtained by dispersing a dye in water, dyeing the woven or knitted fabric by putting the prepared woven or knitted fabric into the fabricated dye bath, raising a temperature of the dye bath starting from 35 to 45° C. for 30 to 50 minutes at a rate of 1.2 to 1.5° C./min, and maintaining the heated dye bath at 90 to 100° C. for 15 to 25 minutes, and washing the dyed woven or knitted fabric. The dyed woven or knitted fabric has a light reflection reduction rate of 20% to 30%.
摘要翻译:制造染色机织或编织物的方法包括使用金属丝和弹性模量为400至600kg / mm 2和伸长率为30至40%的常压染色涤纶纱线制备编织物或针织物,制造染浴 将通过将染料分散在水中而获得的染料溶液,通过将制备的编织物或针织物放入制造的染浴中对织造或针织物进行染色,将染浴从35℃开始升温至30℃至30℃ 50分钟,速率为1.2〜1.5℃/分钟,并将加热的染浴保持在90〜100℃15〜25分钟,洗涤染色机织或针织物。 染色机织或针织物的光反射减少率为20%至30%。
摘要:
Methods and apparatuses for activating colorant in selected regions of an article in which the colorant is incorporated are described. The colorant activation can create various desired visual aspects.
摘要:
Various methods for forming dyed microspheres are provided. One method includes activating a chemical structure coupled to a dye using heat or light to form a reaction intermediate in the presence of a microsphere. The reaction intermediate covalently attaches to a polymer of the microsphere thereby coupling the dye to the polymer and forming the dyed microsphere. Additional methods are provided for forming a dyed microsphere coupled to a molecule. These methods include dyeing the microspheres as described above in addition to synthesizing the molecule on an outer surface of the dyed microspheres. A population of dyed microspheres is also provided. Each of the dyed microspheres of the population includes a dye attached to a polymer of each of the dyed microspheres by a chemical structure. A coefficient of variation in dye characteristics of the population of dyed microspheres attributable to the dye is less than about 10%.