Microcrystalline wax
AssigneeShell Oil Company
InventorsAndries Hendrik JANSSEN, Gerrit Leendert BEZEMER, Edward Julius CREIJGHTON, Guy Lode Magda Maria VERBIST, Pim LOHMEIJER, Christina Georgieva CHRISTOVA-ZDRAVKOVA
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Abstract
The present invention provides a microcrystalline wax having a needle penetration according to ASTM D-1321 at 25° C. of more than 1, a crystallinity according to XRD between 5 and 70%, an initial boiling point of less than 500° C., a congealing point in the range of from 60 to 120° C., an oil content according to ASTM D-721 of more than 2 wt. %, wherein the microcrystalline wax has a fraction up to C40 having at least 5 wt % of multiple methyl-branched paraffins as determined with GC×GC.
Claims9
Microcrystalline wax having a needle penetration according to ASTM D-1321 at 25° C. of more than 1, a crystallinity according to XRD between 5 and 70%, an initial boiling point of less than 500° C., a congealing point in the range of from 60 to 120° C., an oil content according to ASTM D-721 of more than 2 wt. %, wherein the microcrystalline wax has a fraction up to C40 having at least 5 wt % of multiple methyl-branched paraffins as determined with GC×GC.
A process for preparing a microcrystalline wax, the process at least comprising the following steps:
- a. providing a FT wax having a carbon chain length distribution in the range of from 20 to above 120 and a crystallinity according to XRD of more than 75%, wherein at least 1 wt. % of the FT wax has a carbon chain length of more than 120;
- b. subjecting the FT wax to a isomerization step at temperatures in the range of from 200 to 400° C. and a pressure between 1 to 25 Mpa, and a WHSV between 0.1 and 5 kg/l/h, using a catalyst comprising a molecular sieve with a pore size between 5 and 7 angstrom and a SiO2/AlO3 ratio of at least 25, preferably from 50 to 180 and a group VIII metal to obtain a microcrystalline wax having a needle penetration according to ASTM D-1321 at 25° C. of more than 1, a crystallinity according to XRD between 5 and 70%, an initial boiling point of less than 500° C., a congealing point in the range of from 60 to 120° C., an oil content according to ASTM D-721 of more than 2 wt. %, wherein the microcrystalline wax has a fraction up to C40 having at least 5 wt % of multiple methyl-branched paraffins as determined with GC×GC.
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Dependencies are inferred from the claim text.