Coating classification: new pigment dispersant

Core tip: Introduction: One of the important application fields of organic pigments is paint coloring and ink coloring In order to obtain coating and ink products that meet the requirements, many manufacturers and companies are committed to the research and development of various types of multifunctional pigment dispersants with specific application characteristics, most of which are polymer type surfactants Polymer dispersants usually play the role of wetting, dispersing, anti flocculation, stabilizing dispersion system and reducing viscosity Among them, the composite products of resin surfactants with synergistic effect and polymer surfactants obtained by polymerization of different monomers developed in recent years are included Presently will Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Introduction: one of the important application fields of organic pigments is paint coloring and ink coloring In order to obtain coating and ink products that meet the requirements, many manufacturers and companies are committed to the research and development of various types of multifunctional pigment dispersants with specific application characteristics, most of which are polymer type surfactants Polymer dispersants usually play the role of wetting, dispersing, anti flocculation, stabilizing dispersion system and reducing viscosity Among them, the composite products of resin surfactants with synergistic effect and polymer surfactants obtained by polymerization of different monomers developed in recent years are included Now the representative varieties that have been popularized and applied are introduced as follows Dispersant ayd: disperser ayd series dispersant is a mixture of several surfactants, which can synergize, wet pigment, resist pigment flocculation, and stabilize the dispersion after coating The functions of dispersant are as follows: A accelerate the wetting of pigment particles, and have good fluidity when adding the solid content of dispersion system; B Reduce the particle size of grinding base material, increase the grinding efficiency and output; C display high color saturation and coloring intensity, so that the pigment can reach the maximum coloring power; D good compatibility with different coatings, long-term viscosity stability; e no hard settlement and agglomeration, and good glossiness can be maintained during aging; F It has no bad effect on the drying time, film fastness, water resistance and glossiness of the coating It can increase the leveling property and obtain better surface glossiness g Minimize bloom, float and wear It can be divided into two categories: the compound products of anionic and nonionic surfactants and polymer dispersants W-22 and w-28 of disperse-ayd series are the complex of anionic surfactant (ASAA) and non-ionic surfactant (NSAA), which are mainly suitable for waterborne (diluted) coatings W-22 is used for Hansha yellow, toluidine red, ear nitroaniline orange, benzidine yellow and inorganic pigments such as TiO2, cadmium yellow and carbon black; w-28 is used for phthalocyanine blue, phthalocyanine green, chromophenol red pigment, quinacridone and reducing pigment Disperse-ayd 15 is composed of modified thermoplastic polypropylene resin, acrylic resin and propylene glycol monomethyl ether acid solution (PM Aceta), which is mainly suitable for preparing dispersion with high concentration of pigment and can directly synthesize final solvent coating The pigment dispersion system prepared by ayd-15 has good compatibility with various alkyd resins (long oil and medium oil) It can be used to prepare products with air drying, baking and finishing, uniform color, good durability and chemical stability Disperser BYK series dispersant: disperser BYK series dispersant is a special dispersant for coatings and plastics Its composition is a new type of special polymer dispersant, especially suitable for the wetting and dispersion of organic and inorganic pigments Take DISPER Byk-163, for example, is composed of polymer block copolymers Compared with the classical dispersing and wetting AIDS, it has strong adsorption on the surface of pigment, obviously improves the wetting effect on pigment particles, shortens the grinding process, and increases the output per unit time It has excellent anti flocculation effect and prevents the re aggregation of dispersed particles, which is particularly suitable for the preparation of solvent based coatings It has a polymer structure Characteristics, does not affect the durability of the coating surface In the process of application, the resin and solvent can be premixed evenly, and then DISPER BYK-163 can be added to the abrasive base After good dispersion, the pigment can be added The amount of dispersant is 10%-25% of the pigment amount, and the inorganic pigment can be reduced to 1%-10% Similarly, the disper byk-358 is a leveling agent for solvent based coatings, which is composed of acrylate copolymer, soluble in Alkylbenzene (acid value is 1 mg KOH / g), and used for top-grade automobile finish, paint and varnish The main function is to improve the leveling property and have excellent compatibility with most of the base materials Efka series dispersants: efka series dispersants are suitable for ink printing and coating industry, all of which belong to different types of polymer dispersants A Efka-5044 / 5244 is a dispersing and wetting agent suitable for coating systems with or without solvent, especially for the preparation of bentonite colloid B Efka-5064 / 5066 has good compatibility with a variety of resins (alkyd, amino resin, nitrocellulose, polypropylene amine, etc.) and is an efficient wetting dispersant, which can prevent the paint system from blooming C Efka-4046 / 4047 is specially designed as dispersant and wetting agent for top grade automobile finish and metal surface coating Both of them can reduce pigment grinding time, improve coloring strength and improve the stability of dispersion Efka-4046 is suitable for the dispersion of inorganic and organic pigments, while efka-4047 is especially suitable for some pigment varieties that are difficult to disperse D Efka-6745 is a derivative concordant dispersant suitable for phthalocyanine pigment It can modify or activate the surface of phthalocyanine pigment, thus strengthening the polymer dispersant, making it easy to bond firmly on the particle surface, improving the coloring strength and reducing the floating color phenomenon of the dispersion In a word, the above kinds of polymer dispersants can reduce the viscosity of materials by 2% - 10%, and are recommended for the following pigment varieties: c.i.p.y.173 (sando Nin yellow 6gl), p.o.36 (novoperm orange HL 70), p.r.170 (novoperm red f3rk), p.r.178 (paliogen red l3910hd) and p.r.179 (paliogen Marron l3920) Solsperse series hyperdispersants: solsperse series hyperdispersants, whose production technology is strictly blocked Features: it can obviously reduce the viscosity of grinding base material; improve the grinding dispersion rate, increase the solid content and thus improve the production capacity; improve the coloring strength and thus reduce the cost of pigment This kind of polymer dispersant also includes two kinds: one is the colored synergist, which contains the molecular structure similar to the treated pigment, so as to help adsorb on the surface of the pigment, change its polarity, and then combine with the polymer dispersant; the other is the colorless polymer dispersant with specific structure The super dispersants suitable for automotive / industrial coating systems include the original solsperse27000 and 28000 varieties and the newly added two varieties: solsperse26000 and 24000sc (suitable for high boiling point aliphatic hydrocarbon solvents) The latter 24000SC is a new product form processed by cold spray cooling Compared with the original 24000GR, the new product can be dissolved in a variety of solvents more quickly, such as ethyl acetate, methyl ethyl ketone MEK, toluene, xylene and other solvents, and can be dissolved only 2 to 5min According to the solubility and structure of dispersant, it has some typical uses for non-polar solvents Taking phthalocyanine blue (p.b.15:3) as an example, polymer dispersant was added to the grinding base material without dispersant, and three rollers were used for grinding dispersion The binder in the formula was alkyd, phenol modified resin, neutral hydrocarbon resin and diluent It can be seen that the solid content of pigment and resin was significantly increased, and the ratio of pigment / binder was increased from 0.7 to 1.43 Type ch polymer dispersant: Ch series Hyperdispersant is a kind of polymer pigment surface treatment agent Its molecule contains anchor group and solvation chain It is suitable for the preparation of easily dispersible pigments with good dispersion stability in the use medium The product types are roughly divided into three different anchor groups, which are suitable for: organic pigments without machine and polar organic pigments; weak acid organic pigments; nonpolar or hydrophobic organic pigments In conclusion, the polymer multifunctional dispersant has been paid more attention by many researchers Compared with the classical dispersant, especially in the preparation of non-aqueous solvent pigment dispersion, the polymer multifunctional dispersant not only accelerates the wetting effect, reduces the viscosity, improves the grinding efficiency, but also greatly improves the coloring strength and the solid content of the dispersion system, and through the three-dimensional barrier effect of the polymer carbon chain Therefore, polymer dispersant has played an important role in oil-based ink printing and coating industry Not only that, in the past decade, it is developing applications in other fields, such as additives used as lubricants; additives for rheological properties of oil-based drilling fluid, to reduce viscosity, speed up circulation, and not increase drilling resistance (ICI product brand: hypermer om1); and additives used in magnetic materials It can be predicted that with the in-depth study of the relevant basic theories in this field, more and more polymer dispersants with practical significance will be developed to meet various specific requirements Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,