Patent · US Active

Temporary protective lacquer optical element

US11697712B2 · kind B2 · utility

0Cited by

2References

11Claims

0Family size

Assignee

tooz technologies GmbH · DE

Inventors

Joerg Puetz · Aalen, DE
Hans-Joachim Weippert · Aalen, DE
Matthias Krieg · Heidenheim, DE

Key dates

Filing date	May 22, 2017
Grant date	Jul 11, 2023
Priority date	—
Expiry date	Jun 21, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG03F7/0275
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A lacquer composition is provided, comprising 20%-79.9% by weight, based on the total weight of the composition, of a thiol compound having two or more thiol groups, 20%-79.9% by weight, based on the total weight of the composition, of a compound having two or more carbon-carbon double bonds and 0.1%-10% by weight, based on the total weight of the composition, of a separating agent having an alkyl radical having 4-20 carbon atoms, where the alkyl radical is unsubstituted or fluorine-substituted and the alkyl radical is bonded to a functional group. Also provided are the use of this lacquer composition as a protective lacquer on an optical surface of an optical element in the production of the optical element, and an optical element comprising the protective lacquer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.