Alkylated napthalene blendstocks and processes for producing the same
Alkylated naphthalene blendstock and processes for making the alkylated naphthalene blendstock are provided. The present processes comprise mixing an acid-form MWW-type catalyst, naphthalene, and a solvent to provide a reaction mixture and adding linear alpha olefins to the reaction mixture after heating. The resulting AN blendstock has an isomer ratio of less than 45 wt % mono alkylated naphthalene and greater than 55 wt % multi-alkylated naphthalene and can be combined with polyalphaolefin base stock to provide a synthetic lubricant formulation produced without triflic catalyst and with less process steps.
1 . A process for making an alkylated naphthalene (AN) blendstock comprising the steps of:
mixing an acid-form MWW-type catalyst, naphthalene, and a solvent to provide a reaction mixture, wherein the acid-form MWW-type catalyst has an average particle distribution between 55 μm and 85 μm, a surface area between 475 and 600 m 2 /g, and a total acidity of between 0.80 and 1.0 meq/g TPAD;
increasing the temperature of the reaction mixture; and
adding linear alpha olefins to the reaction mixture to produce the AN blendstock comprising an isomer ratio of less than 45 wt % mono alkylated naphthalene and greater than 55 wt % multi-alkylated naphthalene, wherein the linear alpha olefins comprise LAO14 or LAO16.
2 . The process for making an AN blendstock of claim 1 , wherein the AN blendstock has a kinematic viscosity between about 7.0 and 9.5 cSt KV100 as measured by D445.
3 . The process for making an AN blendstock of claim 1 , wherein the acid-form MWW-type catalyst is MCM-22H.
4 . The process for making an AN blendstock of claim 1 , wherein the catalyst load is less than 1.5 wt %.
5 . The process for making an AN blendstock of claim 1 , wherein the multi-alkylated naphthalene comprises di-alkylated naphthalene and tri-alkylated naphthalene.
6 . The process for making an AN blendstock of claim 1 , wherein the AN blendstock comprises more than 30 wt % di-alkylated naphthalene.
7 . The process for making an AN blendstock of claim 1 , wherein at least 98 wt % of naphthalene is converted.
8 . The process for making an AN blendstock of claim 1 , where the AN blendstock is made without triflic catalyst.
9 . The process for making an AN blendstock of claim 1 , wherein the linear alpha olefins are a mPAO.
10 . The process for making an AN blendstock of claim 1 , wherein the linear alpha olefins are a hybrid PAO.
11 . The process for making an AN blendstock of claim 1 , wherein the linear alpha olefins comprise at least two different linear alpha-olefins selected from C 3 to C 30 LAO.