Question 1

Why must leather coating matting agents be wax-free?

Accepted Answer

In ultra-thin leather finish films (5–15 µm), wax-treated silica particles can migrate to the surface and create a greasy or tacky feel that disrupts the silky hand leather buyers demand. Wax can also interfere with subsequent topcoat adhesion and cause delamination in flexed leather applications. HMMAT 100 Series is untreated, guaranteeing zero wax contamination and a clean silica-to-binder interface at any film thickness.

Question 2

How does HMMAT 100 achieve high transparency in thin leather films?

Accepted Answer

HMMAT 100 Series offers d50 options from 3 to 18 µm, allowing formulators to precisely match particle size to DFT. In thin leather films (5–15 µm), finer sub-grades with d50 3–6 µm scatter light at a scale below the human perception threshold, delivering effective gloss reduction while maintaining maximum transparency and colour clarity of the leather substrate below.

Question 3

What binder systems is HMMAT 100 compatible with for leather finishes?

Accepted Answer

HMMAT 100 untreated silica is compatible with polyurethane (PU) dispersion topcoats, acrylic emulsion systems, nitrocellulose lacquers, and solvent-borne PU systems widely used in leather finishing. Its neutral surface chemistry does not interfere with crosslinker packages (aziridine, carbodiimide, isocyanate) used in high-performance PU leather topcoats.

Question 4

How does HMMAT 100 contribute to the silky tactile feel demanded by luxury leather brands?

Accepted Answer

The controlled surface roughness created by HMMAT 100 particles — without any waxy boundary layer — produces a dry, smooth micro-texture at the film surface. This micro-texture reduces static friction and gives the characteristic silky-dry hand of premium leather finishes. The absence of wax migration ensures the tactile effect is durable and consistent throughout the product lifecycle.

Question 5

What is the minimum FCL order for HMMAT 100 and what private-label options are available?

Accepted Answer

Minimum order for HMMAT 100 Series is 1 FCL (20 MT). Private-label packaging is available in 25 kg multi-wall paper bags with custom printing of your brand name, product code, and language of choice. Documentation includes CoA (particle size, BET surface area, oil absorption, pH), SDS/MSDS, REACH compliance letter, and batch traceability record.

گرید	d50 / عملیات	محدوده DFT	تناسب کاربردی
HMMAT 140	3–4 µm / بدون عملیات	5–10 µm	رویه فوق‌نازک، حداکثر شفافیت
HMMAT 155	5–6 µm / بدون عملیات	8–15 µm	تکمیل استاندارد چرم PU، لمس ابریشمی
HMMAT 100 (متوسط)	8–10 µm / بدون عملیات	12–25 µm	پوشش‌های چرمی ضخیم‌تر، مات عمیق
HMMAT 100 (درشت)	14–18 µm / بدون عملیات	20–40 µm	کاربردهای چرم بافت ساختاری

HMMAT برای پوشش‌های چرم.

صفر واکس — شیمی فیلم تمیز

شفافیت بالا در DFT 5–15 µm

لمس خشک ابریشمی و بادوام

تامین حجم OEM برای خطوط تکمیل چرم

قابلیت‌های تامین OEM

راهنمای انتخاب گرید برای پوشش‌های چرم

سوالات فنی متداول

راه‌حل پوشش چرم پیشنهادی

Talk to a chemist about HMMAT برای پوشش‌های چرم.