Azidated copolymers and processes for preparing same
AssigneesArlanxeo Deutschland GmbH, University of Waterloo
InventorsConrad Siegers, Dana Adkinson, Gregory J. E. Davidson, Lorenzo Ferrari, Mario Gauthier
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Abstract
The present invention relates to functionalized copolymers of isoolefins and olefinic monomers, particularly to azidated copolymers. The present invention also relates to methods of preparing such azidated copolymers. The functionalized copolymers are used in various technology areas such as surface modification, adhesion, drug delivery, compatibilization of polymer blends or motor oil and fuel additives, and in providing clean cured products without contaminant leaching and/or side products.
Claims44
A bulk material comprising azidated copolymer, the azidated copolymer comprising copolymer chains comprising:
- a) repeating units derived from at least one isoolefin monomer;
- and
- b) repeating units derived from at least one olefinic monomer,
- wherein one or more of the repeating units derived from the at least one olefinic monomer have one or more azide groups attached through a C—N single bond, and
- wherein:
- the copolymer chains have chain ends and repealing units derived from at least one olefinic monomer that are not chain ends, and one or more of the repeating units comprising an azide group is a repeating unit that is not a chain end;
- and
- each copolymer chain in the bulk material has at least one azide group, and the copolymer chains in the bulk material have an average number of azide groups per copolymer chain equal to or greater than 2.
A bulk material comprising azidated copolymer, the azidated copolymer comprising copolymer chains comprising:
- a) repeating units derived from at least one isoolefin monomer;
- and
- b) repeating units derived from at least one olefinic monomer, wherein about 20% to about 100% of the repeating units derived from at least one olefinic monomer comprise attached azide groups attached through a C—N single bond, and
- wherein:
- the copolymer chains have chain ends and repeating units derived from at least one olefinic monomer that are not chain ends, and one or more of the repeating units comprising an azide group is a repeating unit that is not a chain end;
- and
- each copolymer chain in the bulk material has at least one azide group, and the copolymer chains in the bulk material have an average number of azide groups per copolymer chain equal to or greater than 2.
A bulk material comprising azidated copolymer, wherein the azidated copolymer is a star branched polymer comprising copolymer chains comprising:
- a) repeating units derived from at least one isoolefin monomer;
- and
- b) repeating units derived from at least one olefinic monomer,
- wherein one or more of the repeating units derived from the at least one olefinic monomer have one or more azide groups attached through a C—N single bond, and
- wherein:
- the copolymer chains have chain ends and repeating units derived from at least one olefinic monomer that are not chain ends, and one or more of the repeating units comprising an azide group is a repeating unit that is not a chain end;
- and
- each copolymer chain in the bulk material has at least one azide group, and the copolymer chains in the bulk material have an average number of azide groups per copolymer chain equal to or greater than 2.
A process for preparing bulk azidated copolymer, the process comprising contacting
- a copolymer comprising copolymer chains of repeating units derived from at least one isoolefin monomer and repeating units derived from at least one olefinic monomer;
- and
- an azidation reagent
- to form bulk azidated copolymer comprising copolymer chains, wherein:
- in the copolymer chains, one or more of the repeating units derived from the at least one olefinic monomer have one or more azide groups attached through a C—N single bond,
- the copolymer chains have chain ends and repeating units derived from at least one olefinic monomer that are not chain ends, and one or more of the repeating units comprising an azide group is a repeating unit that is not a chain end;
- and
- each copolymer chain in the bulk azidated copolymer has at least one azide group, and the copolymer chains in the bulk azidated copolymer have an average number of azide groups per copolymer chain equal to or greater than 2.
Dependencies are inferred from the claim text.