摘要:
The invention concerns a method for making norbornene from dicyclopentadiene (DPCD) and ethylene characterised in that it consists in subjecting DCPD to partial monomerisation into CPD by pre-heating: at a temperature between 140 DEG C and 240 DEG C; and under pressure from 20 to 300 bars abs., before reacting it with ethylene with an ethylene/DCPD mol ratio of 1 to 20, at a temperature between 200 DEG C and 320 DEG C; under pressure from 20 to 300 bars abs.; and a retention time of 1 to 10 minutes, in stable reaction conditions between DCPD, CPD and ethylene.
摘要:
A method of producing benzene derivatives from furfural and its derivatives. Provided are routes for converting furfural and its derivatives into benzene derivatives including its intermediates.
摘要:
Systems and methods for producing dicyclopentadiene from cyclopentadiene using reactive jet mixing are disclosed. A C 5 hydrocarbon mixture that comprises cyclopentadiene (C 5 H 6 ) is injected as a jet stream into C 5 hydrocarbon liquid in a reactor tank. Under appropriate reaction conditions, cyclopentadiene is dimerized to form dicyclopentadiene.
摘要:
An aqueous bath for filling a vertical interconnect access or trench of a work piece with nickel or a nickel alloy, the bath comprising - a source of nickel ions, and optionally a source of ions of at least one alloying metal, - at least one buffering agent, - at least one of a dimer of a compound of formula (I) or mixtures thereof formula (I), wherein R 1 is a substituted or unsubstituted alkenyl group, R 2 may be present or not, and if present R 2 is a –(CH 2 ) n -SO 3 - group, wherein n is an integer in the range of 1-6, and wherein one or more of the hydrogens in the group may be replaced by a substituent, preferably hydroxide; and a method for filling a vertical interconnect access or trench of a work piece with nickel or a nickel alloy with said aqueous bath.
摘要:
Disclosed is an integrated process and system to generate power and convert acyclic C5 feedstock to non-aromatic, cyclic C5 hydrocarbon. A combustion device, such as a turbine, and reactor tubes containing catalyst compound are disclosed. A process involving contacting acyclic C5 feedstock with catalyst composition and obtaining cyclic C5 hydrocarbon is also disclosed.
摘要:
Disclosed is a process for the conversion of acyclic C5 feedstock to a product comprising cyclic C5 compounds, such as for example, cyclopentadiene, and catalyst compositions for use in such process. The process comprising the steps of contacting said feedstock and, optionally, hydrogen under acyclic C5 conversion conditions in the presence of a catalyst composition to form said product. The catalyst composition comprising a microporous crystalline ferrosilicate, a Group 10 metal, and, optionally, a Group 11 metal, in combination with an optional Group 1 alkali metal and/or an optional Group 2 alkaline earth metal.
摘要:
Disclosed is a process for the conversion of acyclic C 5 feedstock to a product comprising cyclic C 5 compounds, such as for example, cyclopentadiene, and catalyst compositions for use in such process. The process comprising the steps of contacting said feedstock and, optionally, hydrogen under acyclic C 5 conversion conditions in the presence of a catalyst composition to form said product. The catalyst composition comprising a crystalline aluminosilicate having a constraint index of less than or equal to 5, and a Group 10 metal, and, optionally, a Group 11 metal, in combination with a Group 1 alkali metal and/or a Group 2 alkaline earth metal.
摘要:
Methods or preparing para-xylene from biomass by carrying out a Diels-Alder cycloaddition at controlled temperatures and activity ratios. Methods of preparing bio- terephthalic acid and bio-poly(ethylene terephthalate (bio-PET) are also disclosed, as well as products formed from bio-PET.
摘要:
Methods or preparing para -xylene from biomass by carrying out a Diels-Alder cycloaddition at controlled temperatures and activity ratios. Methods of preparing bio- terephthalic acid and bio-poly(ethylene terephthalate (bio-PET) are also disclosed, as well as products formed from bio-PET.
摘要:
Embodiments in accordance with the present invention provide for forming essentially pure diastereomers of 5/6-substιtuted norbornene -type monomers Further, encompass polymerizing such diastereomers to form addition or ROMP polymers where a desired exo-/endo - ratio of the diastereomers is provided to the polymerization, such ratio designed to provide a desired ratio of endo-/exo- structured repeating units for a resulting polymer to have desired physical or chemical properties