Merck Patent Gmbh

Merck Patent Gesellschaft MIT Beschrankter Haftung

Martin Friz

Reiner Dombrowski

Uwe Anthes

Gerhard Pfaff

Stephanie Andes

Michael Uhlig

Beate Dombrowski, Legal Representative

Matthias Kuntz

Reiner Vogt

Katsuhisa Nitta

Gerd Bauer

Christina Schank

Gerald Fuchs-Pohl

Siegfried Raabe

Detlef Albrecht

Nitta Katsuhisa

The invention relates to a vapour-deposition material for the production of optical layers of high refractive index which comprises titanium oxide and gadolinium oxide and/or dysprosium oxide, to a process for the preparation thereof, and to the use thereof.

Vaporizing material for producing highly refractive optical layers

The invention relates to a vapor-deposition material for the production of optical layers of medium refractive index which comprises aluminum oxide and gadolinium oxide, dysprosium oxide and/or ytterbium oxide, to a process for the preparation thereof, and to the use thereof.

Evaporation material for the production of average refractive optical layers

The invention relates to a vapour-deposition material for the production of optical layers of high refractive index which comprises titanium oxide and ytterbium oxide in a molar ratio of from 4:1 to 1:4, to a process for the preparation thereof, and to the use thereof.

Vapour-deposition material for the production of optical layers of high refractive index

The present invention relates to vapor-deposition materials comprising TaO, where x=4.81 to 4.88, to processes for the preparation of the vapor-deposition materials, and to the use thereof for the production of layers of high refractive index.

Vapor-deposition material for the production of layers of high refractive index

The invention relates to multilayered luster pigments based on metallic substrates, which are completely surrounded by a plurality of layers, where these layers comprise at least one layer pack (A) having a colorless dielectric layer of a material with a refractive index n of &#x2266;1.8, and a colorless dielectric layer of a material with a refractive index n of &#x3e;1.8, and a selectively or non-selectively absorbent layer (B), and to a process for their production, and to their use.

Multilayered luster pigments

A pigment with a metallic luster, comprising a wafer-like substrate made of aluminium dioxide having a thickness of more than 250 nm and less than 1 &#x3bc;m, which is fully enveloped by a metal layer.

Pigment with a metallic luster

Process for the production of hydrophobic layers on optical substrates which have an alkaline earth metal fluoride or alkali metal fluoride layer as the outermost layer or consist of alkaline earth metal fluorides or alkali metal fluorides, by thermal vapor deposition with polyfluorohydrocarbons in a high vacuum.

Method and agent for producing hydrophobic layers on fluoride layers

A vapor-deposition material for the production of high-refractive-index optical layers of titanium oxide, titanium and lanthanum oxide under reduced pressure comprising a sintered mixture having the composition TiO &plus;z*La O , where x&equals;1.5 to 1.8 and z&equals;10 to 65% by weight, based on the total weight of the mixture. The constituents of the mixture are in the range of 10 to 65% by weight of lanthanum oxide, 38 to 74% by weight of titanium oxide and 2 to 7% by weight of titanium.

Vapor-deposition material for the production of high-refractive-index optical layers, and process for the production of the vapor-deposition material

Multilayer interference pigment with transparent central layer

The invention relates to a material for and method of preparing water-repellent coatings on optical substrates. Compounds of formula I

Material for and method of preparing water-repellent coatings on optical

The invention relates to a vapor-deposition material for the production of optical coatings of medium refractive index by deposition-coating of substrates in vacuo. The material is a compound of the formula La.sub.1-x Al.sub.1+x O.sub.3 where x=0 to 0.84.

Vapor-deposition material for the production of optical coatings of

The invention relates to a vapor-deposition material for the production of high-refraction optical coatings by coating substrates in vacuo. The material is a compound of the formula La.sub.2 TiO.sub.7-x where x=from 0.3 to 0.7.

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Darmstadt, Germany

Martin Friz