摘要:
A nonwoven textile substrate formed from microfibers with a polyuerthane matrix fully and/or partially impregnated therein, a nonazo disperse dye within microfibers, including the surface, and the matrix. The dyed fibers having an L value of about 35 or less, an ΔE light fastness of about 6 or less when subjected to about 225 kilo-joules, and a long term crock of at least about 1.5.
摘要:
Aramid and aramid-blend fabrics are dyed or flame-retardant treated or both dyed and flame-retardant treated using conventional heat dyeing equipment. Amides capable of swelling the aramid fibers at least 1.5% and preferably having 7 to 14 carbon atoms are used as diffusion-promoting agents for dyes, flame retardant agents or both. Odor-free, flame resistant, colored or colored and highly-flame resistant products result.
摘要:
A process for colouring a synthetic textile material or fiber blend thereof which comprises applying to the synthetic textile material a compound of Formula (1): A--N.dbd.N--D--N.dbd.N--E Formula (1) wherein: A, D and E each independently is an optionally substituted heterocyclic or carbocyclic group and at least one of A, D or E carries directly at least one --SO.sub.2 F group or carries a substituent to which at least one --SO.sub.2 F group is attached. A process for the mass coloration of plastics which comprises incorporating into a plastics material a compound or mixture thereof which is free from water solubilising groups, of Formula (1).
摘要:
A method of tinting a sheet of transparent polyurethane comprising a coloring operation followed by a fixation operation.The aforesaid coloring operation is carried out through immersion of the polyurethane into a bath maintained under continuous agitation and formed of a dispersion of one or several colorants in an aqueous solution containing a surfactant or wetting agent, while the aforesaid fixation operation is carried out through rinsing in a boiling aqueous solution of sodium alkyl sulfonate of the type known under the mark "Teepol".The application to a double or composite sheet preformed to a thin laminate, that is to say, one layer of a thermoplastic polyurethane and one other layer of a thermosetting polyurethane.In a particularly useful embodiment of the invention the tinted polyurethane serves as a selective filter having almost zero transmission in the so-called cutoff range of wavelengths lying between about 350-560 nm. Eyeglasses made from such lenses are useful for victims of aphakia and retinitis pigmentosa.
摘要:
Hydrophobic synthetic fabrics dyed in deep shades utilizing disperse dyes can be improved in solvent bleeding properties by subjecting the dyed fabric to treatment comprising exposure to an aqueous alkaline solution at elevated temperatures prior to the usual heat setting of the dyed fabric. The process is particularly useful for polyester fabrics derived from aromatic polyesters.
摘要:
Azo dyestuffs, insoluble in water, are represented by the formula: ##STR1## wherein A represents the residue of a diazotizable benzene component carrying at least two substituents or the residue of a diazotizable heterocyclic component, R represents alkyl, B represents an unsubstituted or substituted alkyl group, and X represents hydrogen, chlorine, bromine, acylamino, benzoylamino, alkoxycarbonylamino, phenoxycarbonylamino, alkylsulfonylamino or phenylsulfonylamino, the dyestuff molecule being free of groups causing water solubility by formation of ions. These dyestuffs can be used for dyeing of hydrophobic fibers, in particular polyester fibers. Affinity is excellent and there are obtained bright, full-bodied shades very fast to wet tests, sublimation, abrasion and light.
摘要:
A process for dip dyeing aromatic polyamide fibers or fabrics with acid dyes with good dyeability and levelling properties, without modifying measures which may cause deterioration of the desirable properties of the aromatic polyamides, which comprises dip dyeing fibers or fabrics of an unmodified aromatic polyamide in a dye bath comprising an acid dye of the monosulfonic acid, monosulfonic acid-carboxylic acid, disulfonic acid, disulfonic acid-carboxylic acid, or carboxylic acid and at least 1 percent by weight (based on the weight of the solution) of a neutral or acidic inorganic salt, in the presence of a swelling agent having a phenolic hydroxyl group, and alkali metal salts thereof; and soaping the dyeing obtained.
摘要:
An apparatus for biaxially stretching a tubular film, by the use of a heated pressurized fluid supplied in the inside of the expanding tubular film and allowing to leak a part of the fluid through a thin layer clearance between the expanded tubular film and an inserted mandrel at the outside thereof and the difference of speeds between the feed side and takeup side, which is characterized by cylindrical nets of variable diameter, whose upper ends are fixed and on which a positive tension is applied vertically downwards, and which are provided at a leakage section of a heating pressurized fluid filling a thin layer clearance between the outer periphery of an umbrellalike insulating membrane and an expanded tubular film and at the discharge section of a cooling liquid along the outer periphery of an inserted bag mandrel and the expanded tubular film, respectively, to give a uniform and sufficient discharging resistance to the fluid at the entire outer periphery of the bag mandrel and thereby to reduce the leakage of the heating pressurized fluid, and to attain the facilitation of the pressure maintenance in the stretching section above the insulating membrane as well as the uniform discharge of the cooling liquid around the entire outer periphery of the bag mandrel.
摘要:
The dyeing of textile materials by first contacting the same with a liquid dye bath which may be either aqueous or essentially nonaqueous and which is maintained at an elevated temperature and then passing the dyed textile goods through a bath of molten metal maintained at a sufficiently elevated temperature that the aqueous portion of the dye bath liquid retained in the goods is converted to vapor and is completely reacted with the goods before the dyed goods leave the bath of molten metal, whereby the goods are expeditiously dyed and the dye liquid is completely exhausted without recourse to the use of superatmospheric pressures. Furthermore, the spent dye liquid no longer presents a pollution problem in the form in which it is discharged from the process.