Application of the hottest surfactants in water so

2022-08-06
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Application of surfactants in water-soluble and organic pigments wetting agents wetting agents available on the market, such as JFC, jfcs, pingpingjia series, El series and AEO series, penetrant T, etc., are surfactants and wetting agents for textiles. All wetting agents used in textile are hydrophobic based on aliphatic carbon chains, which have more accurate chemical structure data with dyes (pigments) aromatic hydrocarbons, no similarity, low affinity and weak binding. Therefore, the application of hydrophobic group of wetting agent for dye (pigment) is aromatic hydrocarbon, which combines with dye (pigment) particles in a strong anchoring way, so as not to fall off from the particle surface during long-term storage, and the hydrophilic group extends in water to provide steric or electric repulsion

the subsequent spin off is intended to make the company more focused on the different degree of combination between wetting agents with aromatic hydrophobic groups and dye (pigment) particles. Take TX-10 and solsperse27000 as examples for comparison

after sulfating TX-10, s-27000 and emulsifier 600, two hydrophilic groups in one molecule were obtained

in addition to sulfation, there is also carboxylic acid esterification, which has good compatibility with many commonly used organic pigment carboxylic polymer dispersants

in order to improve the affinity with the hydrophobic part of organic pigments, xuyanli of Beijing University of chemical technology and others studied the surface modification of phthalocyanine blue with tmeen20 carboxylate as an aqueous decomposition agent, which fully achieved the characteristic treatment of one machine with multiple uses

when 0.5%~3.0% of the above additives were added to phthalocyanine blue, the critical surface tension C (SC) increased from 23mn/m to 34.8mn/m, increased by 351%; The contact angle with water was reduced from 82.4 to 47, a decrease of 347%. Therefore, the wettability of phthalocyanine blue in water was greatly improved. After treatment, the fluidity was increased by 2.5 times, and the dispersion stability in water was increased by 29%

the above nonionic surfactants are carboxylated to obtain corresponding products, which can be used as surfactants for wetting and dispersing dyes (pigments)

dispersant

lignosulfonic acid is the most effective dispersant. Lignosulfonate is an anionic surfactant composed of a plurality of hydroxyl and sulfonic groups of 4-carboxyl-3-methoxypropane, with an average molecular weight of 8000~13000. The sulfonate is generally sodium salt, calcium salt and ammonium salt. It is a kind of polymer electrolyte

ammonium lignosulfonate is more effective than other sulfonates in improving the solubility of dyes. However, ammonium lignosulfonate has not been mass produced in China. It is suggested to use borresperseam-320 of borregard company; Reed's ligosol can obtain smooth product surface TSF, ligosol TSD, ligosol tsf-65 and ligosol sfx-65, etc

production of environment-friendly water-based ink with additives, water-soluble resin and pigment of water-based ink

water-soluble resin: rosin modified maleic acid resin, ethyl carbamate resin, styrene modified maleic acid resin, water-based amino resin, polyvinyl alcohol, carboxymethyl cellulose and other water-soluble acrylic modified resins are often used in China

surfactant for water-based ink additives

there are several kinds of water-based ink additives: ① defoamer, used to eliminate foam in water-based ink, the dosage is generally 1%~2%. ② Ink stabilizer is mainly used to prevent ink from coalescence and mildew during storage and transportation, reduce ink viscosity and adjust pH value of ink. Generally, ammonia or ethanolamine are used. ③ Other additives include dispersants, preservatives, leveling agents, slip enhancers and cross-linking agents, etc. through the scientific use of these additives to improve the weakness of water-based ink, so as to improve the stability of water-based ink

solvent for water-based inks

the optimized basic formula of water-based inks: water-soluble acrylic acid 25%~35%, water 15%~25%, ethanol 5%~15%, triethylamine 5%~10%, pigments 10%~30%, additives 1%~3%

application of environmental friendly water-based ink: at present, the most important application fields of environmental friendly water-based ink are flexographic printing and gravure printing. 95% of flexographic printing materials use water ink and 80% of gravure printing materials use water ink. In 2001, there were 200 narrow width flexographic printing production lines in China, with an annual demand of 100000 tons of water-based ink

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