|Tag:||spiera weakly acidic|
Does your hair lose the curl due to the high temperature and humidity in your area?
For effortless styling, I want to get a perm because my curls fall flat easily due to the high humidity.
But, I’m also worried about the damage to my hair since I also have dyed hair.
Let me introduce Showa Denko Group’s perm agent technology that work well with dyed hair and is damage-free.
Structure of perm
There are four bonds in hair.
- Peptide bonds : The bonds are hydrolyzed and broken by excessive alkaline agents and hydrogen peroxide.
- Disulfide (S-S) bonds : The bonds are broken by reducing agents and recombined by oxidizing agents.
- Ionic bonds : The bonds are broken when the pH tends to alkaline and tightly bound when pH is weakly acidic(pH 4.5-5.5).
- Hydrogen bonds : The bonds are broken when hair is wet and recombines when it dries.
Of the four bonds mentioned above, disulfide bonds, ionic bonds, and hydrogen bonds are broken to form hair’s permanent wave.
The surface of the hair is composed of a hydrophobic material called “cuticle”, and the inside is composed of a hydrophilic material called”cortex”. In order to break the aforementioned bonds, it is necessary to open this cuticle and allow the chemical to seep into the hair. For this reason, colorants and perms are usually alkaline.
Under alkaline state the cuticles open and allow the chemicals to penetrate, but at the same time, the proteins tend to flow out, which damages the hair and reduces its strength.
In other words, to avoid damage, you need a perm agent that is not alkaline.
This is why we developed the thiol compound “SPIERA™”, which has both hydrophobic and hydrophilic properties. Since it has both properties, so it easily soaks into the hair and there is no need to force the hair to become alkaline.
SPIERA™ can penetrate into hair in a weak acidic state and provide sufficient curling power.
Also, if you turn colored hair to alkaline, it will lose its color, but with SPIERA™, you don’t have to worry about that.
SPEIRA™ is the solution to live your life with healthy beautiful dyed and permed hair.
If you are interested, please contact us.
NEW! Technical Article No. 11
HPLC Analysis of Antidiabetic Drugs
Drugs, including antidiabetic drugs, with different targets have various chemical structures. This makes it difficult for an HPLC method to simultaneously analyze all antidiabetic drugs which may contain peptides, sugars, and lowmolecular weight compounds of different properties. Thus, analysis of each drug requires a specific method with an appropriate column and optimized analytical conditions. This technical article introduces application data for the analysis of four antidiabetic drugs using Shodex™ columns.
✓ Oral Antidiabetic Drug (Metformin);
✓ Liraglutide; and
Click here to read the full PDF version.
Contact us today for your free, no-obligation technical consultation and demo offer.
|Tag:||molecular sieve Semiconductor toxic gas|
Semiconductors such as smartphones and laptops support our convenient lives with their functions.
This time, I would like to introduce the Showa Denko Group’s technology that helps semiconductor manufacturing.
Using a large amount of harmful gas? And looking to remove it?
The semiconductor manufacturing process typically goes through the following processes.
In this process, special gases are used in the Etching, Cleaning, and Deposition processes.
This gas contains toxic components such as (CF4, CHF3,ClF2, F2, Cl2, HF etc) and must be properly treated at the work site after use.
Thus, the following removal devices are installed at each site.
The removal device is filled with adsorbents such as activated carbon and molecular sieves, and by passing through these adsorbents, harmful components such as chlorine ions and fluorine ions are removed. Such equipment is indispensable to maintain a safe working environment.
So why do customers choose Showa Denko’s Molecular Sieves among many other manufacturers?
This is because:
・The binder ratio in the molecular sieve is lowered to maximize the adsorption efficiency.
For these reasons, our semiconductor industry customers have been patronizing our molecular sieves for many years.
“I need to improve the performance of the treatment device”
“I want to purchase reasonably price Molecular Sieve”
If you are in the semiconductor industry with such needs, do not hesitate to contact Showa Denko when selecting adsorbent materials.
Utilizing the experience of the world’s top share, we will provide the solution that suits your work site.
Click the button below to submit your inquiry.