According to the color fixing principle of the color fixing agent, after introducing the active group into the PDMDAAC color fixing agent, the active group in the structure can be used to covalently cross-linked with the hydroxyl group on the fiber fabric to improve the color fixing performance. Four cationic monomers can be used for copolymerization modification of PDMDAAC, including crosslinking reactive cationic modified monomers, namely triallylammonium chloride (tamac), 3-chloro-2-hydroxypropyl triallylammonium chloride (chtaac), crosslinking cationic modified monomers nn-diallyl-3-hydroxyazacyclobutane ammonium chloride (DHAC) and 3-chloro-2-hydroxypropylmethyldiallyl ammonium chloride (CHMDAAC).
If the linear structure of PDMDAAC color fixing agent is transformed into the micro intersection network structure of pseudo plane, the action range of color fixing agent and dye can be expanded, and the overall force between dye and color fixing agent can be improved, so as to improve the color fixing performance of color fixing agent. The copolymerization of three allyl groups in the structure of cross-linking monomer 3-chloro-2-hydroxypropyl Triallyl ammonium chloride (chtaac) with DMDAAC can play a cross-linking role, while changing the linear structure of PDMDAAC into a plane like micro intersection structure, and the reactive group (3-chloro-2-hydroxypropyl) in the structure can have covalent cross-linking reaction with hydroxyl groups on the fabric to improve the color fixing performance. N. Two allyl groups in the structure of n-diallyl-3-hydroxyazacyclobutane ammonium chloride (DHAC) are copolymerized with pdmdaa, and the active group can be introduced into PDMDAAC.
Color fixing agent PDD (CHTAAC)
It is prepared from nn-diallyl-3-hydroxy heterochlorocyclobutane ammonium chloride (DHAC) and DMDAAC.
Fixing agent PPC
3-chloro-2-hydroxypropyl Triallyl ammonium chloride (chtaac) was prepared by the reaction of chtaac and DMDAAC. By controlling the structure and relative molecular weight of the product, a micro Crosslinking Copolymerization modified PDMDAAC color fixing agent with controllable relative molecular weight and structure is obtained, which provides a new type of polyquaternary ammonium salt color fixing agent to improve the color fastness to friction for the printing and dyeing industry. Its color fastness to dry rubbing is more than grade 4, the best color fastness to wet rubbing is grade 4, the color fastness to white cloth is grade 4-5, and the fading fastness of the original is grade 4-5.
Fixing agent PDV
The flexible chain segment is introduced into the macromolecule of color fixing agent to improve the color fixing performance and the softness of the fabric. PDD was synthesized with DMDAAC and DHAC, and then dy-v411 vinyl silicone oil was added to synthesize the color fixing agent PDV. PDV V can improve the wearing comfort of the fabric. The finished fabric is softer, fluffy and smoother than the original fabric, and the bending recovery ability, extensibility and thickness become better.
Vinyl on the molecular chain has good reactivity and can participate in a variety of chemical reactions, such as addition reaction, free radical reaction and so on.
