43results about How to "Strong retention rate" patented technology

The invention discloses a composite wax microemulsion composition, a preparation method and application thereof. The composite wax microemulsion composition contains: 8-28% by weight of high-melting point oxidized polyethylene wax, 4-14% by weight of low-melting point wax, 1-3% by weight of hyperbranched Gemini surfactant, 0.5-3% by weight hyperbranched softening agent, 3-13% by weight of emulsifier, 0.1-1% by weight of sodium hydroxide or potassium hydroxide, and 50-80% by weight of water, based on the total weight of the composite wax microemulsion. The composite wax microemulsion can be prepared by a one-step high-temperature emulsification method, and the process is simple. The prepared composite wax microemulsion has good centrifugation stability and dilution stability. Finishing it on textiles can significantly improve the smoothness of textiles, reduce the dynamic friction coefficient of yarns, improve the sewing performance and hydrophilicity of knitted fabrics, and reduce yellowing.

The invention relates to a vintage dyeing method for knitted wool fabric. The method comprises the steps of: (1) laying knitted wool fabric fully deoiled in a dyeing machine, feeding water, adding a pretreating agent, conducting temperature rise and preservation, discharging pretreatment solution, and washing; (2) feeding water, adding in a cation modifying agent and glacial acetic acid, controlling the pH value at 5-7.5, conducting temperature rise and preservation, discharging residual liquid, and washing; and (3) feeding water, adding in a leveling agent at room temperature, running for 5 to 10min, adding in coating, running for 10-20min, then conducting temperature rise, adding in a color fixing agent and a softening agent, running for 10-20min, then conducting temperature rise, adding in glacial acetic acid, running for 30-60min, conducting temperature reduction to 55-60 DEG C, discharging liquid and washing. The method is adopted for dyeing the wool fabric, the dye-uptake of the coating is high, no residual liquid is left; the excellent washing fastness and wet friction color fastness are achieved, and good application prospects can be reached.

The invention relates to a production process for filled paper. The production process comprises the following steps: mixing a papermaking filling material, cationic starch and a cationic starch cross-linking agent so as to prepare a mixed liquor system; adjusting the temperature of the mixed liquor system to allow the cationic starch to be gelatinzed and cross-linked so as to realize wrapping of a filling material particle; mixing the mixed liquor system in which wrapping of the filling material particle is finished with a pulp fiber so as to prepare paper pulp; and subjecting the paper pulp to paper making so as to obtain finished paper. The invention also relates to the filled paper produced by using the production process. Compared with the prior art, the production process for the filled paper provided by the invention has the following advantages: influence of the filling material on paper strength can be overcome, and more filling materials can be added to replace the pulp fiber. The filled paper produced by using the production process has the advantages of low cost and high strength.

The invention discloses an anti-wrinkle finishing method for cotton fabrics without formaldehyde and without loss of strength, and belongs to the field of anti-wrinkle finishing of textiles. The invention adopts the lipoic acid analog containing disulfide bond (or mercapto group) and carboxyl group as the anti-wrinkle finishing agent of cotton fabric, and establishes a method for anti-wrinkle finishing of cotton fabric without formaldehyde and loss of strength. First, the cotton fabric after scouring and bleaching is immersed in the dimethyl sulfoxide solution of the lipoic acid analogue, and the esterification reaction is completed under the action of a dehydrating agent and a catalyst; the disulfide bond in the lipoic acid analogue is reduced by a reducing agent into two mercapto groups, and finally oxidized to a disulfide bond under a certain tension to form a covalent cross-linked structure to obtain a durable wrinkle-resistant cotton fabric. The cotton fabric after finishing is strong without damage, has excellent wrinkle resistance and good washing stability. Since the molecular structure of lipoic acid analogs does not contain formaldehyde, there will be no problems such as formaldehyde release during processing or consumption, ensuring the safety of wrinkle-resistant cotton fabrics.

The invention relates to a noniron finishing method for purified cotton textiles with high strength retention, which comprises the following steps of: padding the purified cotton textiles by using finishing liquid with the liquid rate being 40-80%, then baking, and finally, neutralizing, washing and softening, wherein a preparation method of the finishing liquid comprises the following steps of: adding 1, 3, 5-triacryloyl-hexahydro-1, 3, 5-triazine FAP (Fibroblast Activation Protein) and alkali into water according to the mass ratio of (50-160):(2-50), and heating to 80-95 DEG C, so as to carry out hydrolysis reaction on FAP till FAP is completely dissolved. According to the method, the problem of poor water solubility is overcome; the ammonia water modification disadvantage is also avoided; the effects of finishing, non-ironing and resisting crease of cotton fabrics by hydrolyzing FAP are good; because the purified cotton textiles are crosslinked under alkali conditions, the high-temperature acid degradation of cellulose is avoided; and the strength retention is high.