search.noResults

search.searching

dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
Lube-Tech


PUBLISHED BY LUBE: THE EUROPEAN LUBRICANTS INDUSTRY MAGAZINE


No.119 page 1 Oxidation stability


and base oil sulphur a dynamic relationship of additive response factors


Prof. Thomas Norrby and Dr. Ann-Louise Jonsson, Nynas AB, Sweden Summary


The world base oil landscape is currently going through rapid structural changes. The rate of change is unparalleled in modern times, with Group I base oil production capacity rapidly declining, and Group II capacity rapidly expanding. The main technical and commercial driver for this change is the technical needs of the automotive engine oil applications. Industrial lubricants, however, have a technical need firmly based in the Group I base oils, mainly due to viscosity and solvency needs. Thus, the rapid decline of Group I availability poses a great challenge for industrial lubricants formulators. Based on our Naphthenic base oil technology, Nynas has developed a new range of Group I replacement base oils. The properties of these closely mimic those of Group I base oils, and we have investigated the low temperature performance, and elastomer material compatibility of these. A key property of fully formulated lubricants is oxidation stability. In this study, we have utilised HP-DSC to explore the oxidation stability of naphthenic-paraffinic base


32 LUBE MAGAZINE NO.148 DECEMBER 2018


oil blends in model formulations with primary and secondary antioxidants. Correlations between added primary and secondary antioxidants and overall base oil Sulphur could be established, which serve as useful guidelines for lubricant formulators.


Introduction


The world base oil market is currently undergoing rapid change. Very large projects for the production of Group II and Group III have been completed in recent years in different regions of the world. Some estimates of the base oil market indicate that, by name plate capacity, the world market would be between 6 and 10 million metric tonnes per annum. This base oil glut spills over onto the Group I producers, which in 2015 alone has resulted in the announced closures in Western Europe of ca. 1.5 million metric tonnes, ca 20 % of the total regional base oil production. Thus, rapid changes in the base oil market, driven mainly by the technical demand from high performance automotive engine oil applications, are impacting all lubricant applications.


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68