Abstract:
An improved process for the manufacture of Alpha -methyl ethers of anthraquinone from the corresponding nitroanthraquinones by reacting the nitro compound with methanol in the presence of at least the stoichiometric amount of anhydrous or virtually anhydrous potassium carbonate with heating. Pure Alpha -methyl ethers are obtained in high space-time yields. The Alpha nitroanthraquinones used may, if desired, be mixtures such as are obtained in the mononitration or dinitration of anthraquinone.
Abstract:
PRODUCTION OF BZ-1-BZ-1''-DIBENZANTHRONYL SULFIDES FROM HALOGEN-SUBSTITUTED BZ-1-BENZANTHRONES CHRACTERIZED BY THE USE OF AN ETHER ALCOHOL AS SOLVENT AND OF AN ALKALI METAL SULFIDE.
Abstract:
The invention relates to the use of amines and/or Mannich adducts as detergents and/or dispersants in fuel and lubricant compositions for direction injection spark ignition engines. The invention also relates to fuel and lubricant compositions containing at least one such Mannich adduct, and to a bisaminoalkylated Mannich adduct.
Abstract:
The present invention relates to the use of amines and/or Mannich adducts as detergents and/or dispersants in fuel and lubricant compositions for direct-injection gasoline engines. The invention further relates to fuel and lubricant compositions which comprise at least one such Mannich adduct, and also a bisaminoalkylated Mannich adduct.
Abstract:
Uso de un componente A, que contiene por lo menos una amina de la fórmula NR1R2R3, en donde: cada R1, R2 y R3 representa independientemente H, alquilo C1-20 o cicloalquilo C3-20, en donde dos restos alquilo pueden formar un anillo junto con el átomo de nitrógeno al cual están unidos, y en donde los restos alquilo y cicloalquilo pueden estar interrumpidos por uno o más grupos elegidos entre O y NR4 y/o pueden estar sustituidos por uno o más grupos OR5 o NR6R7, en donde R4, R5, R6 y R7, independientemente uno de otro, son como se definieron para R1, R2 y R3; y/o un componente B, que contiene por lo menos un aducto de Mannich, de la fórmula (1), en donde: R1 y R2 son definidos independientemente como R1, R2 y R3 del componente A; R8 representa un resto poliisobuteno; R9 representa un grupo alquilo C1-6; R10 representa H o alquilo C1-6; m representa un número de 0 a (4-n) y n representa un número de 1 a 3, como detergentes y/o dispersantes en composiciones de combustibles y lubricantes para motores Otto de inyección directa, que funcionan en un rango lambda de 0,9 a 9. Procedimiento para la reducción de depósitos en motores Otto de inyección directa. Composiciones de combustibles y lubricantes y concentrados de aditivos que contienen por lo menos un aducto de Mannich bisaminoalquilado.
Abstract:
(A) Prepn. of blue-shade gloss pigments is obtd. by treatment of silicatic flakes which are coated with titanium dioxide (the titanium dioxide coating having a geometric layer thickness of 10-60 nm) with a reducing gas mixt. (which contains a vaporised organic cpd. and ammonia) at 800-900 degrees C. (B) Blue-shade gloss pigment is based on silicatic flakes which comprise a reduced titanium dioxide and has a geometric layer thickness of 10-60 nm and a CIELAB colour value -2 ≤ a* ≤ b* ≤ -20 (measurement angle 20 degrees ,'standard light type'D65).
Abstract:
PCT No. PCT/EP95/01871 Sec. 371 Date Dec. 2, 1996 Sec. 102(e) Date Dec. 2, 1996 PCT Filed May 17, 1995 PCT Pub. No. WO95/33009 PCT Pub. Date Dec. 7, 1995Interference pigments based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere are useful for producing forgeryproof documents and packaging.
Abstract:
PCT No. PCT/EP95/01871 Sec. 371 Date Dec. 2, 1996 Sec. 102(e) Date Dec. 2, 1996 PCT Filed May 17, 1995 PCT Pub. No. WO95/33009 PCT Pub. Date Dec. 7, 1995Interference pigments based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere are useful for producing forgeryproof documents and packaging.