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US 5,853,642 AGranted
Process for the in-line polymerization of olefinic monomers
AssigneeMinnesota Mining and Manufacturing Company
InventorsAllen R. Siedle, Gaddam N. Babu, Katherine A. Brown-Wensley, James R. Peterson
Life of this patent
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Abstract
A process that involves the in-line polymerization of olefinic monomer(s) and catalyst systems comprising a transition metal species that mediates the polymerization of the monomer(s) is disclosed. This process provides the immediate use of the resultant polymer without extensive further processing.
Claims30
A process for making a poly(olefin) film in an in-line procedure comprising the steps:
- a) coating a substrate with a layer of a mixture comprising
- 1) at least one olefinic monomer, having 5 to 30 carbon atoms, having one of the formulae ##STR7## wherein (A) R.sup.1 is hydrogen and R.sup.2, R.sup.3, and R.sup.4 are independently hydrogen or a C.sub.1 -C.sub.27 aryl, aralkyl, aliphatic, or cycloaliphatic group, with the provisos that at least one of R.sup.2, R.sup.3, and R.sup.4 must be hydrogen and that R.sup.2, R.sup.3, and R.sup.4 cannot all be hydrogen, or
- (B) R.sup.1 and at least one of R.sup.2, R.sup.3, and R.sup.4, as well as the carbon atoms to which they are attached, form at least one strained aliphatic ring, and
- (C) R.sup.5 is (CR.sup.2 R.sup.3).sub.m where m is 1 or 2 and R.sup.2 and R.sup.3 are independently hydrogen or a C.sub.1 -C.sub.27 aryl, aralkyl, aliphatic, or cycloaliphatic group with the provisos that R.sup.2 and R.sup.3 cannot be hydrogen when m is 1 and that R.sup.2 and R.sup.3 cannot both be hydrogen when m is 2;
- and
- 2) an effective amount of a catalyst system comprising a transition metal-containing species;
- and
- b) allowing said at least one monomer in said layer on said substrate to polymerize to a poly(olefin) film.
5 more elements
A process for making a poly(olefin) film in an in-line procedure comprising the steps:
- a) providing a substrate coated with a layer of a mixture comprising
- 1) at least one olefinic monomer, having 5 to 30 carbon atoms, having the formulae ##STR8## wherein R.sup.1 is hydrogen and R.sup.2, R.sup.3, and R.sup.4 are independently hydrogen or a C.sub.1 -C.sub.27 aryl, aralkyl, aliphatic, or cycloaliphatic group, with the provisos that at least one of R.sup.2, R.sup.3, and R.sup.4 must be hydrogen and that R.sup.2, R.sup.3, and R.sup.4 cannot all be hydrogen, and
- 2) an effective amount of a Ziegler-Natta or metallocene catalyst system comprising a transition metal-containing species;
- and
- b) allowing said at least one monomer to polymerize to a poly(olefin) film, said method being performed in an environment that is inert toward said catalyst system.
2 more elements
Dependencies are inferred from the claim text.