摘要:
Chemical compounds and methods for removing dye from polyester fibers, in particular poly(ethylene terephthalate) ('PET') fibers, is disclosed. The compounds and methods are particularly useful for removing dye from panel fabric made from recycled PET fibers. The method involves contacting the PET with a dye removal compound in a sealable vessel. The contents of the vessel are agitated and heated to achieve an increase in pressure and temperature. Following a cooling down period, the PET is removed and rinsed with water. The dye removal compound includes an aqueous solution of at least one leveling agent.
摘要:
Dyed poly(trimethylene terephthalate) fibers having a lightfastness of 4 or higher after 480 kJ incident UV radiation, and processes for preparing the fibers, are provided. The fibers are useful in automotive applications and other uses wherein UV absorption is likely.
摘要:
Use of at least one transition metal coordination compound for improving the light fastness of dyed polyester material. The transition metal coordination compound may be used together with diperse dyes.
摘要:
Disclosed are a modified polyester fiber and a process for producing the same. The modified polyester fiber comprises the component of alkoxylated 2-methyl-1,3-propanediol and has the properties of easy dyeability at low temperatures and good colorfastness to laundering. The modified polyester fiber can be produced by undergoing a polymerization reaction of alkoxylated 2-methyl-1,3-propanediol, alkanediol, and terephthalic acid or an alkyl ester thereof, and then spinning. The modified polyester fiber can be dyed at low temperature and has excellent dyeability and colorfastness to laundering. Therefore, this modified polyester fiber can be widely used in the application of synthetic fiber product.
摘要:
Chemical compounds and methods for removing dye from polyester fibers, in particular poly(ethylene terephthalate) ('PET') fibers, is disclosed. The compounds and methods are particularly useful for removing dye from panel fabric made from recycled PET fibers. The method involves contacting the PET with a dye removal compound in a sealable vessel. The contents of the vessel are agitated and heated to achieve an increase in pressure and temperature. Following a cooling down period, the PET is removed and rinsed with water. The dye removal compound includes an aqueous solution of at least one leveling agent.
摘要:
A process for the continuous dyeing of plastic films, such as polyethylene terephthalate, is characterized by passing the film through a dye bath comprised of dye stuffs dissolved, suspended or dispersed in a liquid carrier comprised at least in part of a polymer, preferably a polyol, having at least one free hydroxyl group and a molecular weight within the range of from about 200 to about 600. The hydrogen bonding provided by the hydroxyl group, together with the high molecular weight and high boiling point of the polyol, mitigate against migration of the dye stuff out of the film, i.e., fading of the film, and impart long lasting color fastness to the film. Rapid diffusion of the dye bath into the film is enhanced by thermal and ultrasonic energization of the bath.
摘要:
Use of pigments according to formula (I) (formula see on enclosed paper version) wherein the substituents have the meanings as defined in claim 1 for dyeing semisynthetic or synthetic hydrophobic fiber materials in aqueous media as well as semisynthetic or synthetic hydrophobic fiber materials dyed with such pigments.
摘要:
A thermoplastic molding composition comprising a transparent resinous component suitable for tinting by dip-dye method is disclosed. The resinous component is selected from the group consisting of (i) a blend of (co)polycarbonate resin and (co) polycaprolacone, and (ii) a copolymer containing carbonate and caprolactone structural units. The composition, characterized in that it is free of photochromic colorants, may be molded by thermoplastic means, and the molded article is then dippeddyed by immersion in a tinting solution. The tinted articles are suitable for making, among others, optical lenses.
摘要:
Verfahren zur Erzeugung von Fluoreszenz auf dunklen textilen Fäden 10 ohne Farbtonänderung mit hoher Dauerhaftigkeit. Im Gegensatz zu ungefärbten textilen Garn ist es bisher nicht möglich dunkel gefärbte Garne oder textile Flächen so mit einer fluoreszierenden Eigenschaft permanent auszustatten, dass sie, bei Anregung, genügend Fluoreszenzlicht aussenden, um durch Strichcodeleser sicher auswertbar zu sein und gleichzeitig der Farbton bei Tageslicht unverändert bleibt. Mittels eines Färbeverfahrens für dunkel bis schwarz 11 vorgefärbte textile Garne 10 oder textile Flächen wird eine handelsübliche das ultraviolette Licht absorbierende Substanz 12 (Weißtöner) in die Randzone 14 der textilen Fasern 10 permanent eingebracht. Die weißtönerhaltige Faserrandschicht wird durch geeignete Konzentration und Verfahrensführung nur so weit ausgebildet, daß bei Tageslicht sowohl das Garn 10 weiter den ursprünglichen Farbton beibehält als auch eine starke Fluoreszenz entsteht. Die Herstellung von gewebten unsichtbaren Strichcodes mit Fluoreszenz in dunkel gefärbten textilen Flächen (Etiketten) ist eine Anwendung.