441 results about "Emulsion polymerisation" patented technology

The invention discloses an uvioresistant acrylic resin coating and a preparation method thereof, and belongs to the technical field of acrylic resin paints.The uvioresistant acrylic resin coating is characterized in that step-by-step functional design is adopted, a functional polyurethane prepolymer is constructed through prepolymerization reaction and double-bond end capping, fluorosilicone modified acrylate emulsion is prepared through a core-shell emulsion polymerization process, and the uvioresistant acrylic resin coating is obtained. Then carrying out surface silane modification on hexagonal boron nitride and carrying out composite coating to obtain a modified boron nitride auxiliary agent; and finally, carrying out composite emulsification and dispersion compounding on all the components to obtain the anti-ultraviolet acrylic resin coating. Through the synergistic enhancement effect of the fluorosilicone modified core-shell structure and the surface modified boron nitride, the ultraviolet aging resistance and the insulation reliability of the coating are remarkably improved on the basis of keeping high adhesive force, excellent flexibility and impact resistance of the coating; the problems that a traditional acrylic coating is prone to yellowing and pulverization under long-term ultraviolet radiation, and the mechanical property is reduced are effectively solved, and the acrylic coating is suitable for the field of electronic equipment protective coatings with high requirements for weather resistance, mechanical strength and electrical insulating property.

The invention provides an environment-friendly water-based acrylic emulsion adhesive without containing an organic solvent. The environment-friendly water-based acrylic emulsion adhesive is prepared from the following raw materials: 55-60 wt% of eleostearic acid hydroxyethyl acrylate (TMA), 15-25 wt% of butyl acrylate (BA), 3-10 wt% of acrylic acid (AA), 2-5 wt% of a cross-linking agent, 3-8 wt% of modified soil and 0.5-1 wt% of an initiator as a solid phase; the liquid phase is deionized water, and the environment-friendly water-based acrylic emulsion adhesive is prepared through semi-continuous emulsion polymerization. The prepared environment-friendly water-based acrylic emulsion adhesive is high in biodegradability and low in VOC content, has the mechanical property matched with that of a traditional acrylic emulsion adhesive and also has the self-repairing capacity, waste materials can be treated by changing the temperature or pH condition, the environment-friendly water-based acrylic emulsion adhesive can be recycled for multiple times, and the recycling cost is reduced.

The invention relates to high-adhesion weather-resistant water-based ink and a preparation process thereof, and relates to the field of ink materials and preparation, and the high-adhesion weather-resistant water-based ink is prepared from the following raw materials in parts by mass: 25-40 parts of waterborne polyurethane, 10-20 parts of waterborne acrylate, 35-50 parts of water-based color paste, 1-4 parts of auxiliaries and water; the water-based acrylate is obtained through emulsion polymerization, and polymeric monomers comprise epoxy acrylate, hydroxyethyl acrylate, pentaerythritol tetraacrylate and acrylic acid; the epoxy acrylate comprises fatty acid modified epoxy diacrylate. The preparation method comprises the following steps: adding the water-based polyurethane resin and the water-based acrylate into water, stirring, adding the water-based color paste, stirring, adding the auxiliary agent, stirring, adjusting the viscosity, stirring, and filtering to obtain the high-adhesion weather-resistant water-based ink. The water-based ink has the effect of improving the adhesive force and weather resistance of the water-based ink.

The invention discloses an anti-ultraviolet nano-material, which is characterized in that nano-spheres with uniform and controllable size and anti-ultraviolet capability are prepared by utilizing reverse microemulsion polymerization reaction and adopting a one-pot method. The preparation process is simple, the process is safe, and the use of halogen compounds is not involved. Only 1-5wt% of the nanospheres prepared by the invention are added, so that the waterborne epoxy coating has enhanced mechanical properties and ultraviolet resistance.

The invention discloses an embolism microsphere and a preparation method thereof.The embolism microsphere is prepared through the following steps that a polycarboxylate microsphere is prepared by combining a free radical polymerization method and an emulsion polymerization method, and the polycarboxylate microsphere is obtained; and saponifying and hydrolyzing the polycarboxylate microspheres to hydrolyze the polycarboxylate microspheres to obtain hydroxyl polymer microspheres, and introducing an acidic group onto the hydroxyl polymer microspheres to obtain the embolism microspheres containing both the hydroxyl group and the acidic group. The embolism microsphere disclosed by the invention realizes high loading capacity and controllable release of the anti-tumor drug, realizes accurate embolism in blood flow, and improves the treatment effect of the drug.

The invention belongs to the field of digital ink jet, and discloses a preparation method of a colored nano resin particle dispersion and application of the colored nano resin particle dispersion in digital ink jet. By adopting a cosolvent method, the solubility of the pigment is improved by adding a cosolvent into a monomer, and the coating rate of the pigment is increased. Meanwhile, special monomers are not needed, common traditional emulsion polymerization monomers can be used, the manufacturing process is simple, neck clamping is not prone to occurring, and reaction control is easy. According to the invention, the pigment is coated by an emulsion polymerization technology to obtain the colored nano resin particle dispersion, the digital ink-jet ink is prepared from the colored nano resin particle dispersion, and the ink layer of the digital ink-jet ink has better water resistance, light resistance and migration resistance compared with the traditional dye ink, and has good adhesiveness.

The invention provides an environment-friendly water-based pressure-sensitive adhesive as well as a synthesis method and application thereof. The environment-friendly water-based pressure-sensitive adhesive comprises a dehydroabietic acid-based acrylate derivative grafted acrylate emulsion and a rosin emulsion, wherein the acrylate emulsion is prepared from an acrylate monomer, a dehydroabietic acid-based acrylate derivative monomer, an emulsifier, an initiator and water through an emulsion polymerization reaction. The dehydroabietic acid-based acrylate derivative monomer is prepared from a rosin derivative dehydroabietic acid and a hydroxyl acrylate monomer through an esterification reaction; according to the environment-friendly water-based pressure-sensitive adhesive, the synthesis method and the application thereof, the comprehensive performance of the acrylate pressure-sensitive adhesive is improved, the environment-friendly water-based acrylate pressure-sensitive adhesive is developed, the rosin derivative is added as a synthesis or compounding raw material, dependence on fossil raw materials is reduced, and meanwhile, the environment-friendly water-based acrylate pressure-sensitive adhesive is prepared. The comprehensive performance such as initial adhesion and peel strength of the pressure-sensitive adhesive is remarkably improved, and the whole production and use process is free of VOC emission and environmentally friendly.

The invention discloses a polycarboxylate superplasticizer with a linear water-reducing rate as well as a preparation method and application of the polycarboxylate superplasticizer. The water reducing agent is prepared from a polyether macromonomer phosphating derivative, a carboxylic acid monomer, a sulfonic acid monomer, an ester slump retaining monomer, a linear regulation and control monomer and other units through a free radical emulsion polymerization process. Compared with a traditional polycarboxylic acid water reducer, the water reducer has more regular side chain arrangement, higher charge density, higher adsorption capacity and more stable dispersing performance, the water-reducing rate can be linearly increased along with the increase of the mixing amount within the effective mixing amount range, and the water-reducing efficiency is improved. The problem that the concrete fluidity is difficult to control due to nonlinear fluctuation of the water reducing rate of a traditional polycarboxylic acid water reducing agent is solved, and the method has important significance on improving the concrete construction stability and the engineering quality. The product provided by the invention has excellent mud resistance and slump loss resistance besides high linear water-reducing rate, is suitable for various cast-in-place and precast concrete projects, and has remarkable economic value and application prospect.

The invention relates to the technical field of hydrophobic materials, in particular to a water-based acrylate emulsion based on structured hydrophobic particle modification as well as a preparation method and application of the water-based acrylate emulsion. The industrial problems that hydrophobic particles are prone to agglomeration and the hydrophobic effect is not lasting are solved. According to the emulsion, long-chain alkyl silane modified silicon dioxide serves as a structured hydrophobic phase, in-situ hybridization is carried out on the structured hydrophobic phase, a hydrophobic silane coupling agent, an acrylate monomer and the like through a semi-continuous emulsion polymerization method, and a stable micro-nano rough structure and a low-surface-energy surface are successfully constructed in a coating. According to the preparation method, a physical hydrophobic structure and chemical hydrophobic components are ingeniously combined, the prepared emulsion is good in stability, the water contact angle after film forming can reach 110 degrees or above, and the emulsion has excellent static hydrophobic and dynamic moisture-resistant performance and has wide application prospects in the fields of buildings, textiles, leather and the like.

The invention discloses a water-based environment-friendly peelable coating for a glass substrate and a preparation method of the water-based environment-friendly peelable coating, and belongs to the technical field of water-based coatings. The preparation method comprises the following steps: firstly, carrying out chemical modification on polydimethylsiloxane (PDMS) by utilizing a silane coupling agent to prepare K-PDMS with polymerizable double bonds; then carrying out copolymerization on the K-PDMS and an acrylate monomer through an emulsion polymerization method to prepare a water-based acrylic resin emulsion; and finally, mixing the emulsion with deionized water, an auxiliary agent and color paste to prepare a water-based strippable coating, applying the water-based strippable coating to the surface of a glass substrate, and drying to form a strippable coating. According to the present invention, the compatibility problem of PDMS and acrylic resin is fundamentally solved through the chemical bonding manner, such that the obtained coating has advantages of excellent peelability, high mechanical strength, prominent hydrophobicity and good heat resistance, and is especially suitable for the efficient demolding of the glass mold and the temporary surface protection of the glass product.

The invention discloses an elastomer enhancement strategy based on a covalent organic framework nano confinement effect, and belongs to the field of elastomer enhancement. Aiming at the defects of the existing polymer material in mechanical properties or functional characteristics, the COF is introduced into a polymerization system through a dispersion process adaptive to different polymerization reaction characteristics: in emulsion polymerization, the COF is pre-dispersed in an acrylate monomer, and then the solid elastomer is prepared through emulsification, polymerization initiation, demulsification and drying. In condensation polymerization, the COF dispersion liquid is added into the polyurethane prepolymer, and the enhanced elastomer is prepared through chain extension and curing. In free radical polymerization, a COF aqueous dispersion is blended with monomers such as acrylamide, and the composite hydrogel is prepared through thermal initiation polymerization. According to the method, the mechanical strength, the toughness and the functional characteristics of the obtained composite material are remarkably improved by utilizing the regular pore channels and the active surface of the COF.

The invention belongs to the technical field of polyester window films, and particularly relates to a high-transmittance polyester film and a preparation method thereof. The composite window film comprises a wear-resistant layer and a BOPET base material layer, the wear-resistant layer is obtained by curing a coating liquid, and the coating liquid comprises the following raw materials in parts by mass: 100 parts of an epoxy acrylic resin emulsion, 8-12 parts of silane modified silicon dioxide, 3-5 parts of a modifier, 0.1-0.3 part of a light stabilizer and 40-60 parts of water. The modifier is prepared by reacting epoxy cyclohexyl ethyl POSS and amino polyethylene glycol hydroxyl according to a molar ratio of 1: (8.1-8.2), the solid content of the epoxy acrylic resin emulsion is 30-35wt%, and the epoxy acrylic resin emulsion is prepared by carrying out emulsion polymerization on an unsaturated epoxy monomer, a soft monomer and a hard monomer according to mass ratios of (15-25): (20-40): (40-60). The modifier has a flexible spacer arm formed by a rigid nano-sized inorganic siloxane cage core and a polyethylene glycol chain, and the flexible spacer arm acts on the surface of silicon dioxide to play a role in fixing and also plays a role in a three-dimensional barrier to block silicon dioxide agglomeration, and meanwhile, the wear resistance and the light transmittance of the polyester film are improved.

The present invention provides a method of preparing a stain-resistant coated substrate (e.g., a board, sheet, panel, tile, assembly, or film) for construction and building (e.g., for exterior use), the method comprising coating a substrate with a coating composition of one or more aqueous emulsion polymers and one or more photoinitiators (e.g., a hydrogen-abstracting initiator) onto the substrate to form a coated substrate, at least partially curing or drying the coating, and exposing the at least partially cured coating on the coated substrate to UV light to cause the photoinitiator to react with itself or with the coating composition. In the method, the wavelength of the UV light used preferably matches or at least overlaps the spectral activation or excitation window of the one or more photoinitiators.

The present application relates to the field of paint technology, and particularly relates to a wear-resistant acrylic resin paint and a preparation method thereof. The paint is prepared by modifying the surface of silicon carbide powder with a vinyl composite silane coupling agent, and through semi-continuous emulsion polymerization with a water-based acrylic system, combined with leveling agents, defoaming agents and light stabilizers and other components, to obtain an acrylic resin paint with excellent wear resistance and mechanical properties. The vinyl composite silane coupling agent simultaneously introduces hydrophilic quaternary ammonium salt groups and polymerizable vinyl groups in the molecule, significantly improving the dispersibility and reaction accessibility of the silicon carbide particles in the water-based system, effectively solving the problems of aggregation of traditional modified alkenyl silicon carbide particles and low copolymerization efficiency of alkenyl groups at the molecular level. The prepared paint coating has significantly improved wear resistance, adhesion and tensile properties, and has a compact structure and stable performance, and is suitable for high-performance functional protective and decorative coating fields.

The invention discloses an emulsion polymer which contains a structural unit A, a structural unit B, a structural unit C and a structural unit D. The structural unit A has a structural unit shown in a formula (1), the structural unit B has a structural unit shown in a formula (2), the structural unit C has a structural unit shown in a formula (3), and the structural unit D has a structural unit shown in a formula (4). The weight percentage of the structural unit A is 5-15%, the weight percentage of the structural unit B is 2-40%, the weight percentage of the structural unit C is 10-70%, the weight percentage of the structural unit D is 1-80%, and the viscosity average molecular weight of the emulsion polymer is 30 million to 30 million; wherein R is an alkyl group, preferably a straight chain alkyl group or a branched chain alkyl group of C6-C18.

This invention discloses a polymer-loaded drug-eluting nanoparticle with high encapsulation efficiency and its application in coatings and surface film materials. The polymer-loaded drug-eluting nanoparticles are prepared via emulsion polymerization, simultaneously loading antibacterial drugs with different log P values. The preparation process is simple, and the resulting product has small particle size, high molecular weight, high uniformity, and high drug encapsulation efficiency, achieving the substitution of non-reactive surfactants with reactive surfactants. A coating can be prepared using the above-mentioned polymer-loaded drug-eluting nanoparticles. The coating can be further used to prepare sustained-release antibacterial surface film materials through cross-linking film formation, exhibiting good mechanical properties, excellent chemical resistance, and high safety. This invention can be widely applied to various environmental and material surfaces, including but not limited to surface modification of instruments and building materials in residential and medical environments, thereby achieving a long-lasting antibacterial effect.

The present invention generally relates to methods and compositions for making tissue, paper or paperboard and for enhancing their retention and drainage. In particular, the present disclosure provides a method for enhancing retention and draining by adding a retention and drainage aid comprising a fast reversed phase cationic emulsion polyacrylamide (QIC-EPAM) and a polyvinylamine (PVAm) polymer. Manufacture of paper under these conditions provides improved retention, gravity drain rate, and DDA drain time without excessive flocculation, and allows for a significant reduction in PVAm dosage.

The invention relates to a low-VOCs acrylic resin water-based coating and a preparation method thereof, and belongs to the technical field of high polymer materials and chemical coatings, the low-VOCs acrylic resin water-based coating comprises the following raw materials by weight: 40-80 parts of a modified acrylic resin emulsion, 0-30 parts of a pigment filler, 1-5 parts of a water-based auxiliary agent, 10-30 parts of deionized water and 0.5-2 parts of a post-addition cross-linking agent; the modified acrylic resin emulsion is prepared from a core-layer monomer mixture and a shell-layer monomer mixture through a core-shell emulsion polymerization process, and the shell-layer monomer mixture comprises a functionalized internal plasticizing monomer and a self-crosslinking functional monomer. The monomer is prepared by reacting long-chain fatty alcohol with diisocyanate to prepare an isocyanate-terminated prepolymer and then grafting the isocyanate-terminated prepolymer with a hydroxyl-containing acrylic monomer, a long-chain alkyl structure provided by the long-chain fatty alcohol plays a remarkable internal plasticizing role on the surfaces of latex particles, and the friction force between polymer chain segments is effectively reduced.

The invention discloses a preparation method of a high-water-resistance super-water-permeability wood lacquer emulsion, and relates to the technical field of water-borne wood lacquer emulsions.The method comprises the steps that a core-forming emulsion V1, a shell-forming emulsion V2, a silane coupling agent solution V3, a priming initiator solution I1, a core-forming emulsifier initiator solution I2 and a shell-forming emulsion initiator solution I3 are prepared respectively; preparing a reaction place R1; preparing a reaction base solution R2; preparing an intermediate emulsion R21; dropwise adding a shell emulsion V2 into the intermediate emulsion R21, dropwise adding a shell emulsion initiator solution I3 at the same time, after dropwise adding, preserving heat for 60 minutes at 83 + / -1 DEG C, and then cooling to 75-80 DEG C for post-treatment to obtain a water-based acrylic core-shell polymer emulsion; on the premise of ensuring good water resistance of a paint film, the prepared polymerizable emulsion system does not influence transparency of the paint film, and a silane coupling agent is introduced in the emulsion polymerization process to improve durability and adhesiveness.

The invention discloses an interface molecularly imprinted polymer microsphere as well as a preparation method and application thereof, and relates to the technical field of functional polymer materials. The preparation method comprises the following steps: firstly, enabling template molecules to react with a silane coupling agent to form a template molecule compound; and then anchoring the template molecule compound on the surface of SiO2 particles, so that the template molecule compound simultaneously plays the dual roles of a stabilizer and an imprinting template in Pickering emulsion polymerization. And after the polymerization is completed, removing the template molecule modified SiO2 particles to obtain the polymer microspheres of which the imprinting sites are completely exposed on the surfaces of the microspheres. Molecular imprinting sites of the microspheres are uniformly distributed on the surface and are in an open and highly accessible state, so that the recognition rate and the binding capacity of target molecules are remarkably improved, and the microspheres have excellent selective enrichment and separation performance on target analytes; a reliable technical path is provided for practical application of the molecularly imprinted material in the fields of solid-phase extraction, sensing detection, medicine purification and the like.

The application discloses a kind of paper printing vacuum aluminum plating water-based coating liquid.The coating liquid includes low Tg / high hardness water-based acrylic emulsion and polycarbonate type and / or acrylic modified water-based polyurethane dispersion as film-forming material, with water-based auxiliary agent, film-forming auxiliary agent, wax emulsion, water and other substances.Low Tg / high hardness water-based acrylic emulsion is to use alkali-soluble acrylic ester solid resin selected under specific condition as reactive macromolecular rheological control emulsifier, and to use seed emulsion polymerization method to synthesize core-shell structure of styrene-acrylic emulsion.The coating liquid of the application has excellent rheological property, excellent sealing property and film-forming property, super-high aluminum plating gloss, wear resistance, excellent anti-sticking and anti-glare property, chemical resistance, resolubility, printing adaptability, environmental protection, and is suitable for various printing and coating methods, especially suitable for printing industry of tobacco and liquor with extremely strict requirements on printing speed, drying speed, wear resistance, anti-sticking and aluminum plating appearance.

The application provides a miniemulsion polymer, which is prepared by a miniemulsion polymerization method through controlling pre-emulsion droplet particle size by a high-pressure homogenizer, using specific auxiliary stabilizers and specific primary emulsifiers. After the miniemulsion polymer is incorporated into a base material, an engineering material with high air tightness, high water tightness, high bonding strength and excellent durability can be obtained, which is used for the durability protection or sealing of engineering structures or the bonding between different materials, and has the advantages of simple process, low cost and outstanding comprehensive performance.

A method for preventing adhesion of and clogging with a mineral raw material by performing at least any of transfer and treatment of a raw material mixture in which a mineral raw material has been brought into contact with a cationic w / o emulsion polymer in a transfer and treatment facility and preventing adhesion of and clogging with the mineral raw material in the transfer and treatment facility, wherein the cationic w / o emulsion polymer has an intrinsic viscosity of 10.0 dL / g or less.

The invention discloses a deepening pigment printing adhesive and a preparation method thereof, and belongs to the technical field of textile printing and dyeing auxiliaries. The adhesive comprises the following raw materials: 2%-4% of 1, 5-bis [(2-hydroxyethyl) amino]-9, 10-anthraquinone, 1%-2% of hydroxyethyl acrylate, 3%-5% of hexamethylene diisocyanate, 30%-35% of an acrylate monomer, 0.6%-1% of an acrylic monomer, 0.8%-1.2% of an anionic emulsifier, 0.8%-1.2% of a nonionic emulsifier, 0.3%-0.5% of a water-soluble initiator, 1%-1.2% of ammonia water and the balance of deionized water. Firstly, three raw materials are subjected to an addition polymerization reaction to obtain a cross-linking monomer, and then the cross-linking monomer and an acrylate monomer are subjected to emulsion polymerization to obtain a target product. After the product is applied to printing, the compatibility of the adhesive and dye is improved due to the anthraquinone structure in the structure, so that the color yield of a pigment printing fabric is improved, and the effect of deepening is achieved.

The present application relates to a kind of anti-crack road marking paint suitable for alpine region and preparation method thereof, belong to the field of coating technology.The present application is by synthesizing allyl silicon modified pyridine quaternary ammonium salt monomer containing silicon atom, pyridine quaternary ammonium salt and branched fatty chain and spiro ring thioether quaternary ammonium salt monomer containing sulfide, carboxyl, quaternary ammonium salt and spiro ring structure, and two monomers and butyl acrylate, decyl acrylate are carried out emulsion polymerization reaction, and polyacrylate emulsion is prepared, then polyacrylate emulsion, rutile titanium dioxide, mica powder, talcum powder and alumina fiber are mixed, and road marking paint is prepared.The road marking paint of the present application has good adhesion, wear resistance, water resistance, alkali resistance, flexibility, glass bead firm adhesion and anti-freezing performance simultaneously.

The application relates to the technical field of paint manufacturing, in particular to a method for preparing a water-based hydroxyl acrylate latex and a two-component paint. The preparation method comprises the following steps: performing emulsification treatment on part of acrylate monomers, hydroxyl acrylate monomers, hyperbranched polyester polyol, carboxyl monomers, a crosslinking agent, part of an emulsifier and part of water to obtain a pre-emulsified solution; performing a first polymerization reaction on the remaining acrylate monomers, the remaining emulsifier, part of an initiator and the remaining water to generate a seed emulsion; gradually adding the pre-emulsified solution and the remaining initiator into the seed emulsion to perform a second polymerization reaction, and then adding an additive to perform post-treatment to obtain the water-based hydroxyl acrylate latex. The water-based hydroxyl acrylate latex is prepared by using a free radical emulsion polymerization method and a seed emulsion polymerization process, has low VOC content, is green and environmentally friendly, has high water resistance, strong salt mist resistance, high adhesion to a substrate to be coated, good quick-drying performance and good pigment wrapping performance, and can be used for preparing a two-component paint.

The application relates to the technical field of synthetic rubber, in particular to a nitrile rubber, a preparation method and application thereof, wherein the preparation method adopts at least potassium saponification soap and / or sodium saponification soap of disulfated rosin acid, C 10 -C 13 A composite emulsifier system composed of linear alkyl benzene sulfonic acid and naphthalene sulfonic acid formaldehyde condensate sodium salt and a low-temperature emulsion polymerization process, and the obtained nitrile rubber can be used in the field of oil-resistant sealing in a hydraulic oil operation environment.

The application discloses a high-beta-crystal-phase polyvinylidene fluoride fiber piezoelectric film and a preparation method thereof, wherein the preparation method comprises the following steps: step one: polyvinylidene fluoride resin with a weight average molecular weight of 500,000-800,000, a long branched chain content of 1.2‰-5‰, and a 7% mass fraction NMP solution rotary viscosity of 5000-8000 mpa.s at 25 DEG C is prepared by emulsion polymerization of polyvinylidene fluoride monomer and difluoro-monochloroethane; and step two: the polyvinylidene fluoride resin obtained in step one is made into an electrostatic spinning precursor solution, and the electrostatic spinning precursor solution is spun and film-formed by an electrostatic spinning method. The polyvinylidene fluoride nanofiber film with finer and higher beta-crystal-phase content can be prepared by adjusting the content of the long branched chain and the viscosity of the electrostatic spinning solution.

The present application relates to the technical field of water-soluble polymer emulsion, in particular to a composite anion modified polyacrylate flocculant emulsion, a preparation method and application thereof.The preparation method comprises (1) water phase preparation, (2) oil phase preparation, (3) mixed emulsification, (4) inverse emulsion polymerization, (5) emulsion monomer modification, and (6) emulsion post-treatment.The composite anion modified polyacrylate flocculant emulsion can be used in the red mud settling and washing process.The present application increases flocculation, adds polymerization aids, structural functional monomers and emulsion monomer modification processes, maximizes the content of active components, enriches the monomer functional groups, makes the molecular weight of long-chain molecules of the flocculant larger, enhances the bridging capacity and electrical neutralization performance, and improves the applicability of low aluminum-silicon ratio diaspore and the economy of alumina production.

The invention relates to a fabric low-color-change softening agent and a preparation method thereof. The low-color-change fabric softening agent is prepared by the following steps: preparing an emulsion polymer from 5-15% by mass of divinyl-terminated polydimethylsiloxane, 5-15% by mass of double-bond single-terminated polyurethane, 3-15% by mass of poly (ethylene glycol) (methyl) acrylate and 2-10% by mass of allyl polyoxyethylene ether in the presence of an emulsifier, and then adding 0.05-0.5% by mass of an additive. Compared with conventional softeners, the fabric low-color-change softener prepared by the invention has small influence on colored light of dyed fabrics, especially sensitive yarn-dyed fabrics, small yellowing on white fabrics, excellent hand feeling and good hydrophilicity.