Introduction to PIPES

As a kind of biological buffer, PIPES has a pH range of 6.1-7.5 and a pKa value of 6.8 at 25°C. It can be used in laboratory research and development 

processes and chemical production processes.

Application of PIPES

1.Application in fertilizers

The continued use of fertilizers results in a loss of soil fertility and nutrient balance. To increase crop yields and meet the growing needs of a growing 

population, more and more fertilizers are being used. In addition, the extensive application or use of urea, its rapid hydrolysis and nitrification in soil 

are leading to the worsening of soil health and environmental problems such as greenhouse gas emissions and groundwater contamination. To improve 

soil fertility, farmers apply micronutrient fertilizers and/or inhibitors in addition to conventional fertilizers. Because it is administered separately, there is 

potential for over-application, under-application, and misuse, and separate administration is more laborious.

Therefore, there is a need for improved fertilizer granules with improved application properties. Therefore, the CN108026118B patent provides a fertilizer 

granule. The fertilizer granules include fertilizer core granules and a nitrogen-containing fertilizer composition. The fertilizer core granules contain a variety 

of fertilizer additives, specifically pH buffers, inhibitors, binders, micronutrients, etc.

The pH buffer can be 3-{[tris(hydroxymethyl)methyl]amino}propanesulfonic acid, tris(hydroxymethyl)methylamine, N-tris(hydroxymethyl)methylglycine, 

3-[N- Tris(hydroxymethyl)methylamino]-2-hydroxypropanesulfonic acid, 4-2-hydroxyethyl-1-piperazinesulfonic acid, 2-{[tris(hydroxymethyl)methyl]amino}ethyl 

Sulfonic acid, 3-(N-morpholino)propanesulfonic acid, piperazine-N,N′-bis(2-ethanesulfonic acid), dimethylarsinic acid, sodium citrate salt, 

2-(N- Morpholinyl)ethanesulfonic acid, 2(R)-2-(methylamino)succinic acid, etc.

2.Application in ink

The inkjet recording method is a method in which droplets of ink are ejected from fine nozzles and adhered to a recording medium for recording. 

This method has the characteristic of being able to record high-resolution and high-quality images at high speed using a relatively inexpensive device. 

In the inkjet recording method, the properties, stability, and image quality of the ink used are very important. Existing technologies include inkjet printing 

inks in which disperse dyes and silicone-based surfactants are dispersed through resins. When mixing dyes such as disperse dyes that are insoluble or poorly 

soluble in water, a naphthalene-based dispersant is used. The naphthalene-based dispersant causes an odor. The existing technology also mixes silicone 

surfactants. If silicone surfactants are added to the ink, although the initial surface tension is reduced, the surface tension will gradually increase during 

long-term storage, and the filling properties and ejection stability will deteriorate, sometimes resulting in poor image quality. Deterioration. Therefore, 

the CN109306203B patent provides an inkjet ink composition for sublimation transfer printing. The ink composition includes disperse dye, dispersion resin, 

organic silicon surfactant, and solubilizer.

This ink composition can add a pH adjuster as needed. As a pH adjuster, adipic acid, citric acid, succinic acid, lactic acid, N,N-bis(2-hydroxyethyl)-

2-aminoethanesulfonic acid (BES), 4-(2-hydroxyethyl) may be used. )-1-piperazineethanesulfonic acid (HEPES), morpholinoethanesulfonic acid (MES),

N-(2-acetamido)-2-iminodiacetic acid (ADA), piperazine-1,4-di (2-ethanesulfonic acid) (PIPES), N-(2-acetamide)-2-aminoethanesulfonic acid (ACES), 

N-tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid (TES) , acetamide glycine, trimethylglycine, glycinamide, N-diglycine and other Good buffers, 

phosphate buffer, citrate buffer, tris buffer, etc.

The inkjet ink composition for sublimation transfer enables printing and dyeing with suppressed odor, has good filling properties, is less likely to change 

in physical properties during storage, and has excellent storage stability.