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Title:
HIGH-PERFORMANCE HEAVY-DUTY HIGH-TEMPERATURE WATERPROOFING LUBRICATING GREASE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/191910
Kind Code:
A1
Abstract:
A high-performance heavy-duty high-temperature waterproofing lubricating grease and a preparation method therefor. The components of said lubricating grease comprise a synthetic calcium sulfonate grease, polyurea and a functional additive. The synthetic calcium sulfonate grease comprises a base oil, synthetic calcium sulfonate having an ultra-high alkali value and glacial acetic acid. The polyurea includes MDI, tallow amine and cyclohexylamine. The functional additive includes high-temperature antioxidants, copper corrosion resistant additives, atactic polypropylene, styrene-isoprene-styrene block copolymers and melamine cyanurate. Polyurea calcium sulfonate complex is prepared in a grease production kettle. The temperature of materials in the kettle is increased to 120 to 130°C, until water in the kettle is completely removed. A functional additive is added, the temperature of materials in the kettle is increased to 170 to190°C, and the temperature is maintained for about 10 minutes, so as to obtain a high-performance heavy-duty high-temperature waterproofing lubricating grease. The present invention has comprehensive and excellent properties: strong bearing capacity, good wear resistance and friction reduction property, excellent water resistance and acid and base resistance, strong corrosion resistance, good oxidation stability and thermal stability, and being cost-effective.

Inventors:
LI HONGQIANG (CN)
LI WENTING (CN)
ZHANG LIJIA (CN)
LI YANHAN (CN)
Application Number:
PCT/CN2019/087956
Publication Date:
October 01, 2020
Filing Date:
May 22, 2019
Export Citation:
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Assignee:
SHANDONG KEYSTONE LUBE TECH CO LTD (CN)
International Classes:
C10M135/10; C10M169/00; C10N30/00
Foreign References:
CN106118832A2016-11-16
CN102690716A2012-09-26
CN1414076A2003-04-30
CN102504920A2012-06-20
CN109439421A2019-03-08
US8507421B22013-08-13
Attorney, Agent or Firm:
BEIJING DIRECTION STANDARD INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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