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Patent Searching and Data


Title:
TAIL SEAL COMPOSITION FOR USE IN SHIELD MACHINE
Document Type and Number:
WIPO Patent Application WO/2016/021690
Kind Code:
A1
Abstract:
Provided is a tail seal composition exhibiting excellent cut-off performance and pumpability. A tail seal composition for use in a shield machine and containing 15-60 mass% of a lubricant base oil, 30-70 mass% of an inorganic powder, and 2-10 mass% of a fiber material containing short and long fibers, wherein the lubricant base oil contains mineral oil and polybutene in a mass ratio of 20:1-1:1.

Inventors:
ARAI TAKASHI (JP)
TOKUMO YASUHA (JP)
Application Number:
PCT/JP2015/072377
Publication Date:
February 11, 2016
Filing Date:
August 06, 2015
Export Citation:
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Assignee:
JX NIPPON OIL & ENERGY CORP (JP)
International Classes:
C09K8/34; C10M101/02; C10M107/08; C10M125/10; C10M125/30; C10M169/04; E21D9/06; E21D11/00; C10N20/02; C10N20/04; C10N20/06; C10N30/00; C10N40/00
Foreign References:
JPH01272687A1989-10-31
JPH02180983A1990-07-13
JPH0296087A1990-04-06
JPH03197798A1991-08-29
JPH08143885A1996-06-04
Attorney, Agent or Firm:
MOEGI PATENT OFFICE (JP)
Patent business corporation It burns and is ぎ特許事務所. (JP)
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