Title:
COATING DRUG FOR FORMING SOLID LUBRICATING FILM, PRODUCTION METHOD FOR SAID COATING DRUG, OIL WELL PIPE REPAIRING METHOD, LUBRICATION IMPROVING METHOD FOR OIL WELL PIPE, AND OIL WELL PIPE
Document Type and Number:
WIPO Patent Application WO/2024/043132
Kind Code:
A1
Abstract:
Provided is a drug which is environmentally friendly and durable for actual use in a well. The drug is for forming a solid lubricating film by being applied to a metal surface. The drug contains a solid lubricant, a binder resin, and a solvent as main components, wherein: the solvent contains water as a main component and is obtained by adding, as an additive, a lower alcohol having at most 3 carbon atoms to water; the volume of the additive is 0.5-10 with respect to 100 of the volume of the water; at least 95% of the volume of the solvent is composed of the water and the additive; the solid lubricant contains at least 95% of graphite and metallic soap and at most 1% of alkali soap, with respect to the total weight of solid lubricating components; the amount of the graphite is 0.5-5% with respect to the entire amount of the solid lubricant, in terms of weight ratio; the binder resin is a water-soluble or water-dispersible polymer; and the polymer is a polymer or copolymer containing at least 90% of monomers belonging to acrylate or methacrylate with respect to the total weight of the binder resin.
Inventors:
ISHIGURO YASUHIDE (JP)
GOTO SEIGO (JP)
KOGA TAKASHI (JP)
KAWAI TAKAMASA (JP)
OZAKI SEIJI (JP)
SATO HIDEO (JP)
FUJIMOTO SACHIKO (JP)
TAKANO JUN (JP)
OKUBO AKIRA (JP)
SHODA KOICHI (JP)
KOBAYASHI RYOTA (JP)
KUBO RYOTA (JP)
TOYOSAWA KOTA (JP)
GOTO SEIGO (JP)
KOGA TAKASHI (JP)
KAWAI TAKAMASA (JP)
OZAKI SEIJI (JP)
SATO HIDEO (JP)
FUJIMOTO SACHIKO (JP)
TAKANO JUN (JP)
OKUBO AKIRA (JP)
SHODA KOICHI (JP)
KOBAYASHI RYOTA (JP)
KUBO RYOTA (JP)
TOYOSAWA KOTA (JP)
Application Number:
PCT/JP2023/029434
Publication Date:
February 29, 2024
Filing Date:
August 14, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
TOYO DRILUBE CO LTD (JP)
TOYO DRILUBE CO LTD (JP)
International Classes:
C09D133/00; C09D5/02; C09D7/40; C09D7/61; C09D7/63; C10M125/02; C10M129/26; C10M129/40; C10M129/44; F16L15/04; C10N10/02; C10N10/04; C10N20/06; C10N40/00; C10N50/02
Domestic Patent References:
| WO2009072486A1 | 2009-06-11 |
Foreign References:
| JP2008537062A | 2008-09-11 | |||
| JP2014501885A | 2014-01-23 | |||
| JPS6284193A | 1987-04-17 | |||
| JPH1036876A | 1998-02-10 |
Attorney, Agent or Firm:
TANAKA Hidetetsu et al. (JP)
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