1. basic overview
ethylene glycol tert-butyl ether (etb) is an ethylene glycol butyl ether substituted solvent with low photochemical reactivity. it has extremely low odor, low toxicity, and low photochemical reactivity, mild skin irritation, good miscibility with water, good dispersion stability for latex coatings, miscibility with most resins and organic solvents, and good hydrophilicity, and can be widely used in coatings, inks, cleaning agents, fiber wetting agents, plasticizers, organic synthesis intermediates, paint removers and many other fields. water-dispersed coatings made with this solvent have good storage stability, especially under low temperature conditions in winter.
2. application fields
1 water-based coating solvents
mainly used as solvents for water-based systems and latex water-dispersed coatings in the coating industry. because the hlb value of etb is close to 9.0, its function in the dispersion system plays the role of dispersant, emulsifier, rheology agent, and co-solvent. it has good performance in latex paints, colloidal dispersion paints, and dissolved aqueous solution resin paints in water-based paints. , used in building interior and exterior wall coatings, automobile primers, colored tinplate and other fields.
2 paint solvent
2.1 as dispersant. when producing extra black amino paint and extra black acrylic paint, it usually takes a lot of time to grind high-pigment carbon black to reach a certain fineness. however, using etb-soaked high-pigment carbon black, the grinding time can be shortened by more than half, and after painting the paint looks flatter and smoother.
2.2 use as a leveling agent and defoaming agent to improve the drying speed, flatness, gloss and adhesion fastness of water-dispersed coatings. due to its tert-butyl structure, it has high photochemical stability and safety, and can eliminate pinholes, small particles and bubbles in the paint film. water-dispersed coatings made of etb have good storage stability, especially under low temperature conditions in winter.
2.3 improve gloss. etb is used in amino paint and nitrocellulose paint to prevent “orange peel”-like markings and increase the gloss of the paint film by 2% to 6%.
3 ink dispersant
inks made with etb as a solvent, or used as a diluent and dispersant in printing inks, can greatly improve the rheology of the ink and improve the efficiency of high-speed printing. quality, gloss and adhesion.
4 printing and dyeing
modified silicone oil using etb as a solvent can be used in textile finishing to feel smooth and soft, and greatly reduce irritation to the skin.
5 fiber extraction agent
the american alied-signal company extracted polyethylene fiber containing 76% mineral oil with etb. after extraction, the mineral oil content in the fiber was reduced by 0.15%.
6 oxide titanium phthalocyanine dye
japanese canon company added ti (obu) 4 to the etb solution of 1,3-diaminoisoindoline and stirred at 130°c in 3 hours, titanium oxide phthalocyanine dye with 87% purity was obtained. the crystalline oxytitanium phthalocyanine made of porous oxidized titanium phthalocyanine and etb can be used as a photographic photosensitive sensor, which is highly sensitive to long-wave light.
7 high-efficiency household cleaner
japan’s asahi denko company reacts with propylene oxide and koh containing etb to obtain polyoxypropane monotert-butyl ether, which is a ideal as a highly effective household cleaner.
8 anti-corrosion hydrosol paint
japan paint company uses dimethyl ether, acrylic resin, etb, butanol, tio2, cyclohexylamine carbonate and defoaming agent to make one sprayable anti-corrosion hydrosol paint.
9 radio component carbon film resistor
the carbon film resistor uses etb as the resistance liquid. the surface is smooth and flat, which can eliminate the undesirable phenomena of pinholes and thick edges and improve the quality of electrical components. performance.
10 fuel additives
etb can be used as a co-solvent and improver for new boiler fuels. it not only improves combustion efficiency, but also reduces emissions. it serves as a new energy source for boilers and large marine diesel engines. , there are advantages in rigid demand for environmental protection and policy dividends.