Printing of fiber blends, woven and non-woven or knit fabric
The present invention relates to a composition for printing a fiber blend, yarn, woven or non-woven or knit fabric comprising or consisting of at least acrylic, aramid, and optionally wool, a process for producing the composition, use of the composition, a process for printing said fiber blend, yarn, woven or non-woven or knit fabric, as well as to the printed fiber blend, yarn, woven or non-woven or knit fabric and the use thereof to manufacture goods like cloths therefore.
1. An aqueous composition for printing a fiber blend, yarn, woven, non-woven or knit fabric comprising or consisting of acrylic and aramid, wherein the composition comprises:
a) at least one cationic dye,
b) at least one dispersion comprising at least one pigment,
c) at least one leveling agent in an amount of from 4% to 12% by weight and selected from fatty acids, ethylene urea, fatty alcohol or sulphates thereof, fatty amines or sulphated fatty amine, alkyl aryl or sulphonates thereof, fatty alcohol ethylene oxide, phosphatic salts, aliphatic polyglycol ether, triazine derivates, or mixtures thereof,
d) at least one solvent in an amount from 4 to 12% by weight and selected from aromatic alcohols or aliphatic alcohols having aromatic groups, or aliphatic heterocyclic derivatives, and
e) at least one binder in an amount of from 0.5% to 12% by weight and selected from poly(butyl acrylate), copolymer of butyl(acrylate), ethyl(acrylate) and styrene, polyvinyl acrylate, acrylonitrile, or mixtures thereof,
wherein the % by weight is based on 100% by weight of the total aqueous composition.
2. The aqueous composition according to claim 1 , wherein the composition further comprises at least one reactive dye or at least one acid dye.
3. The aqueous composition according to claim 1 , wherein the composition further comprises at least one stabilizer selected from acrylate polymer(s), acrylamide copolymer(s), alkylphenol polyglycol ether, or mixtures thereof.
4. The aqueous composition according to claim 1 wherein the composition further comprises additives selected from a thickener, acid donor, or mixtures thereof.
5. The aqueous composition according to claim 1 , wherein the composition comprises:
0.01 to 7% by weight of the at least one cationic dye;
0.01 to 3% by weight of the at least one dispersion comprising at least one pigment;
0 to 4% by weight of at least one stabilizer;
0 to 7% by weight of at least one reactive dye or 0 to 7% by weight of at least one acid dye;
0 to 8% by weight of at least one thickener; and
0 to 5% by weight acid donor;
based on 100% by weight of the total composition, wherein the remainder to 100% by weight is water.
6. The aqueous composition according to claim 1 , wherein the composition comprises:
0.1 to 5% by weight of the at least one cationic dye;
0.01 to 5% by weight of at least one reactive dye or 0.01 to 5% by weight of at least one acid dye;
1 to 10% by weight of the at least one binder;
0.01 to 2.5% by weight of the at least one dispersion comprising at least one pigment;
5 to 11% by weight of the at least one solvent;
5 to 11% by weight of the at least one leveling agent;
0.1 to 4% by weight of at least one stabilizer,
1 to 5% by weight of at least one thickener; and
1 to 3% by weight of at least one acid donor;
based on 100% by weight of the total composition, wherein the remainder to 100% by weight is water.
7. A process for manufacturing the aqueous composition according to claim 1 , comprising the following steps:
Step A: Mixing and homogenizing all components for the composition, except the at least one cationic dye and the at least one dispersion comprising the at least one pigment;
Step B: Adding the at least one cationic dye and the at least one dispersion comprising the at least one pigment to the mixture obtained in Step A; and
Step C: Mixing and homogenizing the mixture obtained in Step B.
8. A process for printing a fiber blend, yarn, woven, non-woven or knit fabric comprising or consisting of acrylic and aramid and optionally wool comprising the following steps:
Step 1: Printing the fiber blend, yarn, woven, non-woven or knit fabric using the aqueous composition according to claim 1 ;
Step 2: Drying of the printed fiber blend, yarn, woven, non-woven or knit fabric obtained in Step 1 at temperatures of between 100° C. to 200° C.;
Step 3: Fixation of the at least one cationic dye present in the aqueous composition on the fiber blend, yarn, woven, non-woven or knit fabric by subjecting the printed fiber blend, yarn, woven, non-woven or knit fabric obtained in Step 2 to a steam process by applying saturated steam for at least 10 minutes and up to 50 minutes at a temperature of at least 90° C. up to 110° C.;
Step 4: Subjecting the printed fiber blend, yarn, woven, non-woven or knit fabric obtained in Step 3 to a curing step at a temperature of at least 130° C. up to 200° C. for at least 1 minutes up to 7 minutes;
Step 5: Subjecting the printed fiber blend, yarn, woven, non-woven or knit fabric obtained in Step 4 to a washing step; and
Step 6: Subjecting the printed fiber blend, yarn, woven, non-woven or knit fabric obtained in Step 5 to a final drying step at a temperature of at least 100° C. up to 200° C.
9. A printed fiber blend, yarn, woven, non-woven or knit fabric comprising or consisting of acrylic and aramid and optionally wool, wherein the fiber blend, yarn, woven, non-woven or knit fabric comprises as colorant at least one cationic dye and at least one pigment originating from the aqueous composition according to claim 1 .
10. The printed fiber blend, yarn, woven, non-woven or knit fabric according to claim 9 , wherein the printed fiber blend, yarn, woven, non-woven or knit fabric comprises 30 to 50% by weight of acrylic, 30 to 50% by weight of aramid and 0 to 25% by weight of wool based on 100% by weight of the fiber blend, yarn, woven, non-woven or knit fabric.
11. A printed fiber blend, yarn, woven, non-woven or knit fabric comprising or consisting of acrylic, aramid and optionally wool, wherein the fiber blend, yarn, woven, non-woven or knit fabric is printed according to the process as claimed in claim 8 .
12. The printed fiber blend, yarn, woven, non-woven or knit fabric according to claim 9 wherein the fiber blend, yarn, woven, non-woven or knit fabric is used for manufacturing protection cloth for army and police uniforms and equipment including backpacks, camping tents or ownings.
13. A printed fiber blend, yarn, woven, non-woven or knit fabric comprising or consisting of acrylic, aramid and optionally wool, wherein the fiber blend, yarn, woven, non-woven or knit fabric is printed with the aqueous composition according to claim 1 .
14. A printed fiber blend, yarn, woven, non-woven or knit fabric comprising or consisting of acrylic, aramid and optionally wool, wherein the fiber blend, yarn, woven, non-woven or knit fabric is printed with the aqueous composition produced according to claim 7 .