A pretreatment agent for inkjet textile printing, comprising an N-vinylformamide-based cationic polymer and an organic solvent, wherein the organic solvent is a protic polar solvent.

A pretreatment agent for inkjet textile printing, comprising an N-vinylformamide-based cationic polymer and an organic solvent, wherein the organic solvent is a protic polar solvent.

A printing ink for a washing-free cold transfer printing process and a method for printing a polyester fabric by using the printing ink are provided. The printing ink includes a thickener, a disperse dye, a binder, a surfactant, a dispersant and water. The thickener is a waterborne polyurethane thickener with a solid content of about 20-40% and preferably about 25-35%, and the waterborne polyurethane thickener has the following structure:

##STR00001##

where m is 8-20, preferably 8-15, n is 15-25, preferably 17-20, and k is 1-8, preferably 2-6.

A printing ink for a washing-free cold transfer printing process and a method for printing a polyester fabric by using the printing ink are provided. The printing ink includes a thickener, a disperse dye, a binder, a surfactant, a dispersant and water. The thickener is a waterborne polyurethane thickener with a solid content of about 20-40% and preferably about 25-35%, and the waterborne polyurethane thickener has the following structure:

##STR00001##

where m is 8-20, preferably 8-15, n is 15-25, preferably 17-20, and k is 1-8, preferably 2-6.

The present disclosure provides a method for processing an all-polyester fiber cotton-like fabric with sunlight resistance. The method includes: 1) weaving a PTT/PET bicomponent composite stretch yarn into a fabric; 2) dyeing processing the fabric; and 3) finalizing and finishing, wherein the finalizing and finishing comprises: a) preparing a finishing liquor obtained by mixing a crosslinking agent and an emulsion of benzophenone-containing polyorganosiloxane; b) padding the fabric; and c) drying and finalizing at a high temperature.

The present disclosure provides a method for processing an all-polyester fiber cotton-like fabric with sunlight resistance. The method includes: 1) weaving a PTT/PET bicomponent composite stretch yarn into a fabric; 2) dyeing processing the fabric; and 3) finalizing and finishing, wherein the finalizing and finishing comprises: a) preparing a finishing liquor obtained by mixing a crosslinking agent and an emulsion of benzophenone-containing polyorganosiloxane; b) padding the fabric; and c) drying and finalizing at a high temperature.

A method and an integrated system for dyeing synthetic, natural, and blended textiles in the form of fabrics, yarns, and garments are provided. The integrated system includes a first pressurizing pump for pressurizing liquefied CO.sub.2 to supercritical CO.sub.2 (ScCO.sub.2); a second pressurizing pump for pressurizing CO.sub.2 to liquefied CO.sub.2; a liquefied CO.sub.2 storage vessel for storing the liquefied CO.sub.2 and the separated liquefied CO.sub.2 from the one or more cyclone separators; a heater for heating the ScCO.sub.2; a dyestuff vessel for mixing a dyestuff and the ScCO.sub.2 to obtain ScCO.sub.2-mixed dyestuff; a dyeing vessel for dyeing the textile by circulating the ScCO.sub.2 and the ScCO.sub.2-mixed dyestuff between the dyeing vessel and the dyestuff vessel; and one or more cyclone separators for removing the dyestuff from the ScCO.sub.2-mixed dyestuff to obtain separated liquefied CO.sub.2.

A method and an integrated system for dyeing synthetic, natural, and blended textiles in the form of fabrics, yarns, and garments are provided. The integrated system includes a first pressurizing pump for pressurizing liquefied CO.sub.2 to supercritical CO.sub.2 (ScCO.sub.2); a second pressurizing pump for pressurizing CO.sub.2 to liquefied CO.sub.2; a liquefied CO.sub.2 storage vessel for storing the liquefied CO.sub.2 and the separated liquefied CO.sub.2 from the one or more cyclone separators; a heater for heating the ScCO.sub.2; a dyestuff vessel for mixing a dyestuff and the ScCO.sub.2 to obtain ScCO.sub.2-mixed dyestuff; a dyeing vessel for dyeing the textile by circulating the ScCO.sub.2 and the ScCO.sub.2-mixed dyestuff between the dyeing vessel and the dyestuff vessel; and one or more cyclone separators for removing the dyestuff from the ScCO.sub.2-mixed dyestuff to obtain separated liquefied CO.sub.2.

Provided herein is a dyed substrate with at least 70 wt. % of dyed PLA-fibres having a poly(lactic acid) content of at least 70 wt. %, the dyed substrate having a total poly(lactic acid) content of at least 70 wt. %. The dyed PLA-fibres are dyed with one or more disperse dyes, and the dyed substrate has the following CIELAB colour: 0L*25; 5a*5; and 5b*5. A method of preparing the dyed substrate is also provided.

Provided herein is a dyed substrate with at least 70 wt. % of dyed PLA-fibres having a poly(lactic acid) content of at least 70 wt. %, the dyed substrate having a total poly(lactic acid) content of at least 70 wt. %. The dyed PLA-fibres are dyed with one or more disperse dyes, and the dyed substrate has the following CIELAB colour: 0L*25; 5a*5; and 5b*5. A method of preparing the dyed substrate is also provided.