IP Verse

Surface-Treated Fillers For Ultrathin Breathable Films

Patent No. EP3383939 (titled "Surface-Treated Fillers For Ultrathin Breathable Films") was filed by Omya on Nov 11, 2016. The application was issued on Jan 12, 2022.

Patent Summary

This breathable film has a basis weight of 1–10 g/m² and comprises at least one thermoplastic polymer and a surface-treated filler material product. The filler consists of a ground calcium carbonate-comprising material and a treatment layer (0.1–3 wt.%). The filler material is characterized by a weight median particle size (d50) of 0.1–7 µm, a top cut particle size (d98) ≤ 15 µm, a specific surface area (BET) of 0.5–150 m²/g, a residual total moisture content ≤ 1 wt.%, and a fineness where ≥ 65 wt.% of particles are < 1 µm. The treatment layer comprises one or more of: phosphoric acid ester blends, saturated aliphatic linear or branched carboxylic acids (C5–C24), aliphatic aldehydes, polydialkylsiloxanes, or mixtures thereof, including their salty reaction products.

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CompanyOpposition DateRepresentative
SCHAEFER KALKOct 12, 2022MAI BESIER

Dossier Documents

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  • Date

    Description

EP3383939

OMYA
Application Number
EP16795026A
Filing Date
Nov 11, 2016
Status
Granted And Under Opposition
Dec 10, 2021
Publication Date
Jan 12, 2022
External Links
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