Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
POLISHING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2017/163565
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a polishing material which is not susceptible to decrease of the polishing rate over a relatively long period of time. The present invention is a polishing material which comprises a base sheet and a polishing layer that is laminated on the front surface of the base sheet and contains abrasive grains and a binder, and which is characterized in that: the polishing layer comprises a plurality of kinds of abrasive grains; and if first abrasive grains are a kind of abrasive grains having the largest grain diameter among the plurality of kinds of abrasive grains and second abrasive grains are a kind of abrasive grains having the second largest grain diameter among the plurality of kinds of abrasive grains, the ratio of the average grain diameter of the second abrasive grains to the average grain diameter of the first abrasive grains is from 5% to 70% (inclusive). It is preferable that the total content of the abrasive grains in the polishing layer is from 50% by volume to 85% by volume (inclusive). It is preferable that the content of the first abrasive grains in the polishing layer is from 1% by volume to 25% by volume (inclusive). It is preferable that the first abrasive grains are diamond abrasive grains and the second abrasive grains are alumina abrasive grains.

Inventors:
TAKAGI Daisuke (6-6, Minatojima-Minamimachi 4-chome, Chuo-ku, Kobe-sh, Hyogo 47, 〒6500047, JP)
IWANAGA Tomoki (6-6, Minatojima-Minamimachi 4-chome, Chuo-ku, Kobe-sh, Hyogo 47, 〒6500047, JP)
SAITO Kazuo (6-6, Minatojima-Minamimachi 4-chome, Chuo-ku, Kobe-sh, Hyogo 47, 〒6500047, JP)
TAURA Toshikazu (6-6, Minatojima-Minamimachi 4-chome, Chuo-ku, Kobe-sh, Hyogo 47, 〒6500047, JP)
Application Number:
JP2017/001708
Publication Date:
September 28, 2017
Filing Date:
January 19, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BANDO CHEMICAL INDUSTRIES, LTD. (6-6 Minatojima-Minamimachi 4-chome, Chuo-ku Kobe-sh, Hyogo 47, 〒6500047, JP)
International Classes:
B24D3/00; B24D11/00
Attorney, Agent or Firm:
AMANO Kazunori (6th Floor Fujikogyo-Nishimotomachi Building, 1-18, Aioi-cho 1-chome, Chuo-ku, Kobe-sh, Hyogo 25, 〒6500025, JP)
Download PDF: