Methods for textile treatment
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Solution Overview
Problem
Current textile coloring methods face challenges in achieving long-lasting, efficient coloration of fibers, particularly due to the limitations of dyes in resisting sunlight and mechanical stress, and pigments in retaining color when exposed to chemicals and abrasion.
Innovation Solution
A method involving an aqueous dispersion of polymeric particles with neutralized acid moieties, applied over an amino-silicone coat on textile fibers, providing a durable and pigmented polymeric layer that enhances color permanency and optical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dyes are used for textile coloring, then the color penetrates fibers well and resists washing, but the color fades under sunlight exposure
Solution Approach 1:
The patent combines dyes and pigments into a hybrid coloring composition. The dye component penetrates the fiber interior providing wash fastness, while the pigment component remains on the fiber surface providing UV resistance. This composite approach leverages the complementary strengths of both coloring agents to resolve the contradiction between wash retention and sunlight resistance.
2Object-affected harmful factors
If pigments are used for textile coloring, then the color resists sunlight well, but the color is more susceptible to chemical and mechanical damage
Solution Approach 1:
The hybrid composition integrates pigments for UV resistance with dyes for chemical and mechanical resistance. The pigment particles provide the sunlight resistance advantage, while the dye molecules penetrating the fiber interior provide protection against chemical and mechanical degradation. Together they create a more reliable coloring system.
3Ease of manufacture
If fabric coloring is performed at the fabric stage, then the process is more economical, but the coloring efficiency and penetration are reduced
Solution Approach 1:
The coloring composition is designed to be applied at the yarn or fabric stage with pre-formulated dye-pigment combinations. The composition includes carriers and auxiliaries that enhance penetration efficiency even when applied at later stages. This preliminary preparation of the coloring composition maintains economic advantages while improving coloring efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method results in textile fibers with improved color retention, resistance to washes, and enhanced mechanical properties, offering a pleasant feel and long-lasting coloration.
Implementation Method 1
at least one reactive condensation-curable film-forming amino-silicone pre-polymer
Implementation Method 2
applying, on the at least partially cured amino-silicone film, an aqueous dispersion containing a plurality of polymeric particles
Data Source
AI summary
There is disclosed a method of coating textile fibers, the method comprising applying, on the external surface of textile fibers, a pre-treated oil-in-water emulsion comprising: (i) an aqueous phase containing water; and (ii) a pre-treated oil phase containing at least one reactive condensation-curable film-forming amino-silicone pre-polymer that, subsequent to condensation curing optionally in presence of additional reactants, forms an amino-silicone coat. The pre-treated reactive oil phase includes at least one pre-treated reactant or pre-treated pre-polymer. An aqueous dispersion containing particles of a hydrophilic polymeric material is then applied to the amino-silicone coat, so as to form a polymeric layer thereon. At least one of the oil-in-water emulsion forming a first coat and of the aqueous dispersion forming a second coat may further contain a plurality of sub-micronic pigment particles dispersed therein. Suitable compositions and kits including the same are also disclosed, as well as fibers coated thereby.