Method for preparing insecticidal textiles by a dyeing process of synthetic fibres with pyrethoids

Abstract

The present invention relates to a method for preparing insecticidal textiles, which is characterized in that, by depending on the dyeing mechanism, synthetic fabrics or yarns are dyed with pyrethroids by an exhaust dyeing or a pad dyeing process. The said synthetic fibre fabrics include multifilament, monofilament, and/or staple yarn fabrics of polyester, polyamide, polyurethane, polypropylene, polyethylene, polyacryl-nitrile, or polyvinyl chloride, and their blended or interlaced fabrics with natural fibers. The said yarns are multifilament, monofilament, and/or staple yarns of the above fibers or their blended and interlaces yarns with natural fibers. The said pyrethroids are hydrophobic and insoluble in water, have a molecular weight of less than 700 and a decomposition temperature of higher than the heat treatment temperature for exhaust dyeing or pad dyeing, and have at least one of the following groups —OH, —CN, —NH2, —NHR, —NR2, —NHCOR, —I, —Cl, —Br, —NO2, —SONH2,

Description

Claims

1. A method for preparing insecticidal textiles, characterized in that the synthetic fabrics are dyed with pyrethroids by an exhaust dyeing or a pad dyeing process, wherein the said synthetic fiber fabrics include multifilament, monofilament, and/or staple yarn fabrics of polyester, polyamide, polyurethane, polypropylene, polyethylene, polyacryl-nitrile, or polyvinyl chloride, and their blended or interlaced fabrics with natural fibers, or in that, the synthetic fiber yarns are dyed with the pyrethroids by an exhaust dyeing process, wherein the said synthetic fiber yarns include multifilament, monofilament, and/or staple yarns of the above various fibers, and their blended or interlaced yarns with natural fibers.

2. The method for preparing insecticidal textiles according to the claim 1, characterized in that the said pyrethroids are hydrophobic and insoluble in water, have a molecular weight of less than 700 and a decomposition temperature of higher than the heat treatment temperature for exhaust dyeing or pad dyeing, and have at least one of the following groups: —OH, —CN, —NH2, —NHR, —NR2, —NHCOR, —I, —Cl, —Br, —NO2, —SONH2,

3. The method for preparing insecticidal textiles according to the claim 1 or 2, characterized in that, for the said polypropylene fiber, the exhaust dyeing temperature is 60 to 105° C. and the exhaust dyeing time is 10 to 120 minutes, and the heat treatment temperature for pad dyeing is 85 to 155° C. and the heat treatment time for pad dyeing is 0.2 to 6 minutes.

4. The method for preparing insecticidal textiles according to the claim 1 or 2, characterized in that, for the said polyester fiber, the exhaust dyeing temperature is 60 to 140° C. and the exhaust dyeing time is 10 to 120 minutes, and the heat treatment temperature for pad dyeing is 140 to 215° C. and the heat treatment time for pad dyeing is 0.2 to 4 minutes.

5. The method for preparing insecticidal textiles according to the claim 1 or 2, characterized in that, for the said polyamide fiber, the exhaust dyeing temperature is 65 to 110° C. and the exhaust dyeing time is 10 to 120 minutes, and the heat treatment temperature for pad dyeing is 130 to 200° C. and the heat treatment time for pad dyeing is 0.2 to 4 minutes.

6. The method for preparing insecticidal textiles according to the claim 1 or 2, characterized in that, for the said polyurethane fiber, the exhaust dyeing temperature is 65 to 110° C. and the exhaust dyeing time is 10 to 120 minutes, and the heat treatment temperature for pad dyeing is 150 to 200° C. and the heat treatment time for pad dyeing is 0.2 to 4 minutes.

7. The method for preparing insecticidal textiles according to the claim 1 or 2, characterized in that, for the said polyvinyl chloride fiber, the exhaust dyeing temperature is 50 to 90° C. and the exhaust dyeing time is 10 to 120 minutes, and the heat treatment temperature for pad dyeing is 50 to 100° C. and the heat treatment time for pad dyeing is 0.3 to 7 minutes.

8. The method for preparing insecticidal textiles according to the claim 1 or 2, characterized in that, for the said polyacrylonitrile fiber, the exhaust dyeing temperature is 60 to 120° C. and the exhaust dyeing time is 10 to 120 minutes, and the heat treatment temperature for pad dyeing is 120 to 200° C. and the heat treatment time for pad dyeing is 0.2 to 4 minutes.

9. The method for preparing insecticidal textiles according to the claim 1 or 2, characterized in that, for the said polyethylene fiber, the exhaust dyeing temperature is 40 to 90° C. and the exhaust dyeing time is 10 to 60 minutes, and the heat treatment temperature for pad dyeing is 50 to 100° C. and the heat treatment time for pad dyeing is 0.3 to 7 minutes.