摘要:
Process for the preparation of a hydrocarbonaceous distillate and a hydrocarbonaceous residue, which comprises mixing a residual fraction of a product obtained by catalytic cracking or hydrocracking a hydrocarbonaceous feedstock, with a second hydrocarbonaceous fraction having such a boiling range that at least 50%w boils at a temperature above 400°C, and subjecting the resulting mixture to a subatmospheric distillation yielding at least one distillate fraction and one residue. The residue this prepared is a suitable component in bitumen compositions.
摘要:
Process for the preparation of copolymers of carbon monoxide with one or more olefinically unsaturated compounds, by copolymerising the monomers in the presence of a catalyst composition containing a Group-VIII metal and washing the formed copolymer by contacting the copolymer with a liquid which contains, dissolved in a solvent, a mono-, di- or tricarboxylic acid having up to 8 carbon atoms, or a zinc, aluminium or magnesium salt thereof.
摘要:
Stabilized copolymer compositions comprising an alternating copolymer of carbon monoxide and an olefinically unsaturated compound and from 0.03 to 3.0 %w of a sterically hindered phenolic (blend) compound selected from: 1) bis- and tris-phenolic alkanes, 2) tris-phenolic (alkyl)benzenes, 3 tris-phenolic cyanurates, 4) symmectrical diesters of hydroxyphenyl substituted aliphatic monocarboxylic acids and N,N′-bis(hydroxyalkyl)oxalamide, 5) blends comprising on the one hand specific defined phenolic compounds, and on the other hand aromatic amines and/or compounds of general formula R¹OOC-(CH₂) p -S-(CH₂) q -COOR² in which p, q, R¹ and R² have defined meanings.
摘要:
Process for the preparation of a hydrocarbonaceous distillate and a hydrocarbonaceous residue, which comprises mixing a residual fraction of a product obtained by catalytic cracking or hydrocracking a hydrocarbonaceous feedstock, with a second hydrocarbonaceous fraction having such a boiling range that at least 50%w boils at a temperature above 400°C, and subjecting the resulting mixture to a subatmospheric distillation yielding at least one distillate fraction and one residue. The residue this prepared is a suitable component in bitumen compositions.
摘要:
A process for the preparation of 2-cyanohexanoic acid derivative having the general formula: wherein X and Y each represent a chlorine or bromine atom, each Hal represents a fluorine, chlorine or bromine atom and R 1 and R 2 each independently represent an alkyl group of one to four carbon atoms, which comprises reacting a pentenoic acid compound of the general formula: wherein R 1 and R 2 have the same meaning as in the general formula I, with a tetrahalomethane of the general formula: wherein Hal, X and Y have the same meaning as in the general formula 1, in the presence of a catalyst and a solvent for the reactants, characterized in that the catalyst is a transition metal in a divided state belonging to Groups VIB, VIIB or VIII of the Periodic Table of the Elements or a carbonyl of such a transition metal. The 2-cyanohexanoic acid derivatives are useful as intermediates in the manufacture of synthetic pyrethroids which are a group of very active insecticides.
摘要:
Process for the preparation of copolymers of carbon monoxide with one or more olefinically unsaturated compounds, by copolymerising the monomers in the presence of a catalyst composition containing a Group-VIII metal and washing the formed copolymer by contacting the copolymer with a liquid which contains, dissolved in a solvent, a mono-, di- or tricarboxylic acid having up to 8 carbon atoms, or a zinc, aluminium or magnesium salt thereof.
摘要:
Flame-retardant polymer compositions comprising a linear alternating copolymer of carbon monoxide and at least one ethylenically unsaturated compound and a flame-retardant quantity of a substance which is able to generate, upon decomposition, a flame-retarding gaseous compound, characterised in that said substance is a basic or potentially basic reacting metal compound selected from the group of compounds consisting of oxalates and hydroxides, and has an initial decomposition temperature which is at least 25 °C higher than the crystalline melting point of said polymer.
摘要:
Flame-retardant polymer compositions comprising a linear alternating copolymer of carbon monoxide and at least one ethylenically unsaturated compound, and at least a flame-retarding quantity of an organohalogen compound containing one or more polyhalogen substituted rings and having a halogen content of at least 50% m, and/or a compound selected from the group consisting of antimony trioxide, metal borates and mixtures thereof.