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POLISHING AGENT FOR SYNTHETIC QUARTZ GLASS SUBSTRATE AND METHOD FOR POLISHING SYNTHETIC QUARTZ GLASS 发明申请

2023-02-28 2430 1158K 0

专利信息

申请日期 2025-06-24 申请号 US16090680
公开(公告)号 US20190119524A1 公开(公告)日 2019-04-25
公开国别 US 申请人省市代码 全国
申请人 SHIN ETSU CHEMICAL CO LTD
简介 A polishing agent for a synthetic quartz glass substrate, containing polishing particles and water includes ceria particles as base particles, and composite oxide particles of cerium and at least one rare earth element selected from trivalent rare earth elements other than cerium are supported on surfaces of the base particles. This provides a polishing agent for a synthetic quartz glass substrate, the polishing agent having high polishing rate and being capable of sufficiently reducing generation of defects due to polishing.


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