| abstract |
NEW ORGANIC COMPOUNDS USEFUL AS ADDITIVES FOR MOTORFUELS ARE OF THE FORMULA 2-(R-(NH-(CH2)N)M-),4-R1,5-R2,6-R3,7-R4-PERHYDROISOINDOLE- 1,3-DIONE WHEREIN THE HYDROCARBON RING IS A CYCLOHEXANIC, AROMATIC, DIHYDROAROMATIC OR TETRAHYDROAROMATIC RING, R1, R2, R3 AND R4 ARE EACH A HYDROGEN ATOM OR AN ALIPHATIC, LINEAR OR BRANCHED, SATURATED OR UNSATURED HYDROCARBON RADICAL, R1 TO R4 HAVING AS A WGOLE FROM 0 TO 30 CARBON ATOMS, R1 AND R4 BEING OPTIONALLY INTERCONNECTED SO AS TO FROM A BICYCLIC COMPOUND, THE ASSEMBLY-R1-R4 COMPRISING 1 TO 2 CARBON ATOMS, N IS AN INTEGER FROM 2 TO 10, M IS AN INTEGER FROM 0 TO 10 AND R IS A MONOVALENT ALIPHATIC HYDROCARBON RADICAL CONTAINING FROM 1 TO 30 CARBON ATOMS. |