Patent ID: RE41136

Claim:
A process for producing 2,6-dialkylnaphthalene from a feedstock, comprising the following steps: I. separating said feedstock into a naphthalene, monoalkynaphthalene monoalkylnaphthalene , and dialkylnaphthalene fractions: II. separating and purifying 2,6-dialkylnaphthalene from said dialkylnaphthlane dialkylnaphthalene fraction of step I to produce 2,6-dialkylnaphthalene and a second dialkylnaphthalene fraction; III. alkylating said monoalkylnaphthalene fraction of step I with an alkylating agent to produce dialkylnaphthalene and recycling the dialkylnaphthalene to step I; IV. transalkylating said naphthalene fraction of step I and said second dialkylnaphthalene fraction produced in step II, to produce monoaIkylnaphthalene monoalkylnaphthalene , and isomers of dialkylnaphthalene; wherein said monoalkynaphthalene monoalkylnaphthalene fraction produced in step I is cracked before step III, or in step III, or after step III.