[EN] (R)-CHIRAL HALOGENATED 1-SUBSTITUTEDAMINO-(n+1)-ALKANOLS USEFUL FOR INHIBITING CHOLESTERYL ESTER TRANSFER PROTEIN ACTIVITY<br/>[FR] AMINO-(N+1)-ALCANOLS 1-SUBSTITUES HALOGENES R-CHIRAUX, UTILES COMME INHIBITEURS DE L'ACTIVITE DE LA PROTEINE DE TRANSFERT DE L'ESTER DE CHOLESTERYLE
申请人:MONSANTO CO
公开号:WO2000018724A1
公开(公告)日:2000-04-06
The invention relates to substituted aryl and heteroaryl (R)-Chiral Halogenated 1-Substitutedamino-(n+1)-Alkanol compounds useful as inhibitors of cholesteryl ester transfer protein (CETP; plasma lipid transfer protein-I) and compounds, compositions and methods for treating atherosclerosis and other coronary artery diseases. Novel high yield, stereoselective processes for the preparation of the chiral substituted alkanol compounds from chiral and achiral intermediates are described.
PROCESS FOR OBTAINING MALEIC ANHYDRIDE BY DISTILLATION
申请人:Windecker Gunther
公开号:US20100113805A1
公开(公告)日:2010-05-06
What is described is a process for obtaining maleic anhydride by distillation from a solution of maleic anhydride in a high-boiling absorbent which has been obtained by gas phase oxidation of a hydrocarbon and at least partial absorption of the oxidation products into the absorbent, by
i) introducing the solution into the side of a feed column with a rectifying section disposed above the feed point and a stripping section disposed below the feed point,
ii) providing an upper combining column which communicates with the upper end of the rectifying section and a lower combining column which communicates with the lower end of the stripping section,
iii) providing a draw column which communicates with the upper combining column and the lower combining column,
iv) drawing maleic anhydride off as a side draw from the draw column, and drawing off compounds having a lower boiling point than maleic anhydride at the top of the upper combining column and the high-boiling absorbent at the bottom of the lower combining column.
The maleic anhydride obtained as a side draw has a low content of acrylic acid and acetic acid.
An electrostatographic toner composition including a colorant and a resin, the resin being a polyether polymer containing repeating units of the following formula:
wherein R is a residue remaining subsequent to the removal of the hydroxyl groups from a dihydric phenol, R" is an aryl or alkyl radical, Z is the residue remaining subsequent to the removal of the hydroxyl groups from an alkylene ether glycol of the formula
wherein R' is a hydrogen atom, or methyl, n is an integer having a value of 2 to 4, and m is a number such that the polyether polymer has a reduced viscosity of from 0.2 to 0.6.
An aromatic sulfide polymer, from which molded articles can be prepared, is produced by reacting together in an organic solvent elemental sulfur, a polyhalogen-substituted aromatic compound, an aldehyde or condensate thereof as a reductant to remove excess oxygen and a caustic alkali as a scavenger for gaseous carbon dioxide.
Process for production of high to ultra-high molecular weight linear polyarylenesulfides
申请人:KUREHA KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0166368A2
公开(公告)日:1986-01-02
By maintaining an arylenesulfide prepolymer with a melt viscosity of 5 to 3,000 poise at a temperature of 245 to 290 °C under a liquid-liquid two-phase separated state in a solvent for 1 to 50 hours, the molecular weight of said prepolymer is increased to a high to ultra-high value while the linearity of the polymer is retained.