Mono-and polybenzyl-1,2,3,4-tetrahydronaphthalene compositions, use of said compositions or mixture of monobenzyl-,1,2,3,4-tetrahydronaphthalene as heat transfer fluid
AssigneeArkema Inc.
InventorRaymond Commandeur
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Abstract
The invention concerns compositions comprising a mixture of mono- and polybenzyl-1,2,3,4-tetrahydronaphthalenes. The invention also concerns said compositions or a mixture of monobenzyl-1,2,3,4-tetrahydronaphthalene isomers as heat transfer fluid. Said compositions or the mixture of monobenzyl-1,2,3,4-tetrahydronaphthalene isomers are obtained by the action of benzyl chloride on 1,2,3,4-tetrahydronaphthalene in the presence of FeCl3.
Claims11
Mono- and polybenzyl-1,2,3,4-tetrahydronaphthalene compositions, characterized in that they comprise a mixture of the following compounds (Y), (Y1), and (Y2):
- (Y) is a mixture of monobenzyl-1,2,3,4-tetrahydronaphthalene isomers of formula:
- (Y1) is a mixture of monobenzylation compounds of (Y), of formulae:
- (Y2) is a mixture of mono- or polybenzylation compounds of (Y1), of formulae:
- where y and z=0, 1 or 2;
- y′, y″, z′, z″=0 or 1, with the provisos that y+z is never 0, that y′+y″+z′+z″≧1, and that y+z+y′+y″+z′+z″≧3.
A heat transfer fluid comprising a mixture of monobenzyl-1,2,3,4-tetrahydronaphthalene isomers of formula I:
- and wherein said mixture comprises from 30% to 40% by weight of 5-benzyl-1,2,3,4-tetrahydronaphthalene and from 70% to 60% by weight of 6-benzyl-1,2,3,4-tetrahydronaphthalene.
Dependencies are inferred from the claim text.