Abstract: A modified polyamide polymer having a high amino end group content, with more than 30 percent of the amino end groups being secondary or tertiary amine, dramatically improves the dye bleed performance. The modified polyamide may be prepared by polymerization of polyamide-forming monomers in the presence of a carboxylic acid and a hindered piperidine derivative in amounts sufficient to achieve the high amino end group content.

Abstract: Micro-particles of transition metals or their compounds can be generated as an integral part of a fiber by first attaching a nucleating agent to the fiber, and then adding a solution of metal ions. The ions are reduced by the nucleating agent in the fiber, and micro-particles are generated in or on the fiber. Because of the strong color signal resulting from a low concentration of metal micro-particles, the method is cost effective even when using gold or titanium ions. Various colors were generated by changing the size and spacing of the micro-particles, the metal or metal complex used, and the characteristics of the fiber. The dyed fibers displayed colors ranging from pink, red, purple, yellow, orange, peach, brown, gold, silver, grey, green, and black. These colors resisted bleaching by either chemicals or light.

Abstract: Provided is a plurality of ultra-violet light protection formulas in the form of liquids and creams which can be topically applied to various surfaces/substrates to protect such surfaces from the deleterious effects of light primarily in the ultra violet range and in addition, enhance the surface characteristics in some instances. The surfaces/substrates can by typically leather, vinyl, finished wood, unfinished wood, and a host of others too numerous to mention. An example of one formula is illustrated with an ultra-violet light indicating dye for use as an indicator.

Abstract: This invention relates to a process for the production of a partially metallized textile structure of synthetic polymers or natural fibers, which comprises rendering the particular side or areas of the fabric which are not to be metallized hydrophobic or inactive by printing them with thermodiffusion dyes before the metal treatment.