- Patent Title: Lubricant film-forming composition and screw joint for steel pipe
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Application No.: US14915059Application Date: 2014-09-02
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Publication No.: US09725671B2Publication Date: 2017-08-08
- Inventor: Keishi Matsumoto , Kunio Goto , Masayoshi Sasaki
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION , VALLOUREC OIL AND GAS FRANCE
- Applicant Address: JP Tokyo FR Aulnoye-Aymeries
- Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION,VALLOUREC OIL AND GAS FRANCE
- Current Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION,VALLOUREC OIL AND GAS FRANCE
- Current Assignee Address: JP Tokyo FR Aulnoye-Aymeries
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2013-181623 20130902
- International Application: PCT/JP2014/073010 WO 20140902
- International Announcement: WO2015/030252 WO 20150305
- Main IPC: C10M169/00
- IPC: C10M169/00 ; C10M105/34 ; C10M169/04 ; C10M169/06 ; C10M105/26 ; C10M125/02 ; C10M127/00 ; C10M129/06 ; E21B17/042 ; F16L57/06 ; F16B33/06

Abstract:
A lubricant film-forming composition includes as a composition: 40 to 80 mass % of a base oil consisting of one or more selected from pentaerythritol fatty acid ester and trimethylolpropane fatty acid ester; 5 to 20 mass % of a solidifying agent consisting of paraffin wax; and 10 to 40 mass % of a solid lubricant consisting of one or more selected from alkali metal salt of hydroxystearic acid and alkali earth metal salt of hydroxystearic acid. A total content of the base oil, the solidifying agent, and the solid lubricant is 85 mass % or more and 100 mass % or less, and the lubricant film-forming composition does not contain heavy metals.
Public/Granted literature
- US20160208194A1 LUBRICANT FILM-FORMING COMPOSITION AND SCREW JOINT FOR STEEL PIPE Public/Granted day:2016-07-21
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