HPMC's "identity code"

You may not know that in the architectural coatings, tablets and capsules, and even ice cream that can be seen everywhere in life, there is an "invisible guardian" hidden - hydroxypropyl methylcellulose (HPMC). This white powder is like a transformer, which can be transformed into an adhesive, thickener, and moisturizer, but HPMC of different "levels" has different superpowers. Remember these 3 sets of codes and easily unlock its hidden skills!

The first code: ingredient ratio (methoxyl + hydroxypropyl)

- High methoxyl content (19-30%): waterproof and moisture-proof expert, especially suitable for building mortar

- High hydroxypropyl content (4-12%): elastic moisturizing expert, the golden partner of medical capsules

The second code: viscosity index (50,000-200,000 mPa·s)

- Low viscosity (5-100): like "flowing stream water", the first choice for eye drops and sprays

- Medium viscosity (400-2000): like "thick honey", the secret weapon of building latex paint

- High viscosity (4000+): comparable to "super glue", tile adhesives cannot do without it

The third code: body shape characteristics

- Coarse particles: instant players, time-saving and labor-saving mixing on construction sites

- Fine particles: representative of exquisite style, smooth as silk in cosmetics

[Industry pass secrets]