Process for the preparation of polyvinyl compounds
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsKenneth G. Moloy, Bernard D. Dombek
Life of this patent
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Abstract
A process for the preparation of monomeric polyvinyl compounds and/or oligomers thereof comprising: (i) preactivating a supported rhenium oxide catalyst with a hydrocarbyl metal compound; and (ii) reacting, under metathesis reaction conditions, norbornene or one or more substituted norbornenes, or mixtures thereof, with ethylene in the presence of the activated supported catalyst of step (i).
Claims30
A process for the production of polyvinyl compounds, oligomers thereof and mixtures thereof which comprises reacting norbornene, substituted norbornene or a mixture thereof with ethylene in the presence of a hydrocarbyl metal activated supported rhenium oxide catalyst.
A process for the production of polyvinyl compounds of the formula:
- ##STR16## and oligomers and mixtures thereof which comprises reacting in the presence of a hydrocarbyl metal activated supported rhenium oxide catalyst, ethylene and a norbornene compound of the formula:
- ##STR17## wherein:
- R is independently hydrogen, alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, aralkyl, alkaryl, --CN, --NH.sub.2, --OR', --COR', COOR', --OH, --Si(OR').sub.3-a (R').sub.a, --NO.sub.2, --NO, or halogen;
- R' is independently alkyl, cycloalkyl, aryl, alkaryl, or aralkyl;
- and
- a is 0, 1 or 2;
- with the proviso that at least one R is other than hydrogen.
A process for the preparation of monomeric polyvinyl compounds and/or oligomers thereof comprising:
- (i) preactivating a supported rhenium oxide catalyst with a hydrocarbyl metal compound;
- and
- (ii) reacting, under metathesis reaction conditions, norbornene or one or more substituted norbornenes, or mixtures thereof, with ethylene in the presence of the activated supported catalyst of step (i).
1,2,4-trivinylcyclopentane.
2,4-divinylcyclo[3.3.0]oct-6-ene.
1,3-divinyl-4-ethylidenecyclopentane.
2,4-divinylcyclopentane carbonitrile.
1,3-divinyl-4-triethoxysilylcyclopentane.
2,4-divinylcyclopentyl acetate.
A process for the production of 1,2,4-trivinylcyclopentane which comprises reacting 5-vinyl-2-norbornene with ethylene in the presence of Re.sub.2 O.sub.7 /Al.sub.2 O.sub.3 catalyst and tetramethyltin at a temperature of 20.degree. C. to 25.degree. C. and a pressure of 650 psia to 1400 psia.
Dependencies are inferred from the claim text.