Invention Grant
- Patent Title: Preparation of biopolyol esters for lubricant application
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Application No.: US14771137Application Date: 2014-02-28
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Publication No.: US09885006B2Publication Date: 2018-02-06
- Inventor: Normawati Samsodin , Sara Shahruddin , Farah Fazlina M Yasin
- Applicant: PETROLIAM NASIONAL BERHAD
- Applicant Address: MY Kuala Lumpur
- Assignee: Petroliam Nasional Berhad
- Current Assignee: Petroliam Nasional Berhad
- Current Assignee Address: MY Kuala Lumpur
- Agency: LeClairRyan, a Professional Corporation
- Priority: MYPI2013000713 20130228
- International Application: PCT/MY2014/000026 WO 20140228
- International Announcement: WO2014/133380 WO 20140904
- Main IPC: C07C59/147
- IPC: C07C59/147 ; C11C3/00 ; C07C67/08 ; C10M105/42 ; C10M107/32

Abstract:
Ester polyol esters are a unique class of lubricants that have adjustable molecular weights, viscosities, and pour points based on the character of their reaction materials and relative ratios. There is provided a method for preparing at least one ester polyol ester, the method comprising the method comprising preparing a reaction mixture comprising at least one polyol compound; at least one dicarboxylic acid; and at least one monocarboxylic acid, wherein the at least one polyol compound is esterified with the at least one dicarboxylic acid and the at least one monocarboxylic acid, wherein the reaction mixture has a hydroxyl group to carboxyl group ratio (HCR) corresponding to a ratio of moles of hydroxyl groups to moles of carboxyl groups, and the HCR is less than about 1.
Public/Granted literature
- US20160002569A1 THE PREPARATION OF BIOPOLYOL ESTERS FOR LUBRICANT APPLICATION Public/Granted day:2016-01-07
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