Cation complexes between cation guests and polymer hosts that contain cyclic ether units
AssigneeMinnesota Mining and Manufacturing Company
InventorsWilliam J. Schultz, Margaret C. Etter, Alphonsus V. Pocius, Samuel Smith
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Abstract
Complex compositions that comprise a cation guest and a polymer host are provided. The polymer host contains one or more cation-complexing segments that contain hetero atoms in a polydentate complexing array. At least two of the hetero atoms in the cation complexing segment comprise a cyclic ether selected from tetrahydrofuran 2,5-diyl units and tetrahydropyran 2,6-diyl units.
Claims33
A complex that comprises a cation guest and a polymer host wherein said polymer host has a number average molecular weight of at least 1000 and contains one or more cation-complexing segments of the formula ##STR26## wherein said segments comprise at least 5% by weight of said polymer and wherein A is a cyclic ether selected from
- (a) tetrahydrofuran 2,5-diyl units of the formula ##STR27## and (b) tetrahydropyran 2,6-diyl units of the formulae ##STR28## wherein R.sup.1 through R.sup.6 are individually selected from hydrogen and hydrocarbon groups;
- R.sup.7 and R.sup.8 are individually selected from hydrogen, hydrocarbon groups and halo groups;
- Q is a divalent linking moiety;
- B.sup.1 and B.sup.2 are individually selected from A, ##STR29## wherein D.sup.1 and D.sup.2 are individually selected from oxygen and sulfur and E.sup.1 and E.sup.2 are individually selected from hydrogen, lower alkyl groups, cycloalkyl groups and aryl groups;
- n is an integer of at least 2;
- and
- represents the remainder of the polymer chain;
- provided that at least one half of the R.sup.1 through R.sup.8 groups are hydrogen;
- and
- provided that when there are four or more A groups joined consecutively together in said cation-complexing segment, at least about 30% of the junctures between adjacent A groups have a threo configuration.
A composite comprising a first phase of a polymer matrix and a second phase selected from inorganic fillers and inorganic fibers each having cationic sites on their surfaces, said second phase having bonded thereto a polymer host having a number average molecular weight of at least 1000 and containing one or more cation-complexing segments of the formula ##STR34## wherein said segments comprise at least 5% by weight of said polymer host and wherein A is a cyclic ether selected from
- (a) tetrahydrofuran 2,5-diyl units of the formula ##STR35## and (b) tetrahydropyran 2,6-diyl units of the formulae ##STR36## wherein R.sup.1 through R.sup.6 are individually selected from hydrogen and hydrocarbon groups;
- R.sup.7 and R.sup.8 are individually selected from hydrogen, hydrocarbon groups and halo groups;
- Q is a divalent linking moiety;
- B.sup.1 and B.sup.2 are individually selected from A, ##STR37## wherein D.sup.1 and D.sup.2 are individually selected from oxygen and sulfur and E.sup.1 and E.sup.2 are individually selected from hydrogen, lower alkyl groups, cycloalkyl groups and aryl groups;
- n is an integer of at least 2;
- and
- represents the remainder of the polymer chain;
- provided that at least one half of the R.sup.1 through R.sup.8 groups are hydrogen;
- and
- provided that when there are four or more A groups joined consecutively together in said cation-complexing segment, at least about 30% of the junctures between adjacent A groups have a threo configuration.
An article comprising a continuous sheet that has cationic surface sites, a thin layer of a polymer host bonded to said continuous sheet, and a layer of a polymer on said layer of polymer host
- said polymer host having a number average molecular weight of at least 1000 and containing one or more cation-complexing segments of the formula ##STR38## wherein said segments comprise at least 5% by weight of said polymer host and wherein A is a cyclic ether selected from
- (a) tetrahydrofuran 2,5-diyl units of the formula ##STR39## and (b) tetrahydropyran 2,6-diyl units of the formulae ##STR40## wherein R.sup.1 through R.sup.6 are individually selected from hydrogen and hydrocarbon groups;
- R.sup.7 and R.sup.8 are individually selected from hydrogen, hydrocarbon groups and halo groups;
- Q is a divalent linking moiety;
- B.sup.1 and B.sup.2 are individually selected from A, ##STR41## wherein D.sup.1 and D.sup.2 are individually selected from oxygen and sulfur and E.sup.1 and E.sup.2 are individually selected from hydrogen, lower alkyl groups, cycloalkyl groups and aryl groups;
- n is an integer of at least 2;
- and
- represents the remainder of the polymer chain;
- provided that at least one half of the R.sup.1 through R.sup.8 groups are hydrogen;
- and
- provided that when there are four or more A groups joined consecutively together in said cation-complexing segment, at least about 30% of the junctures between adjacent A groups have a threo configuration.
A method of forming a complex between a cation guest and a polymer host that comprises the steps of
- (a) providing a cation guest;
- (b) contacting said guest with a polymer host having a number average molecular weight of at least 1000 and containing one or more cation-complexing segments of the formula ##STR42## wherein said segments comprise at least 5% by weight of said polymer host and wherein A is a cyclic ether selected from
- (a) tetrahydrofuran 2,5-diyl units of the formula ##STR43## and (b) tetrahydropyran 2,6-diyl units of the formulae ##STR44## wherein R.sup.1 through R.sup.6 are individually selected from hydrogen and hydrocarbon groups;
- R.sup.7 and R.sup.8 are individually selected from hydrogen, hydrocarbon groups and halo groups;
- Q is a divalent linking moiety;
- B.sup.1 and B.sup.2 are individually selected from A, ##STR45## wherein D.sup.1 and D.sup.2 are individually selected from oxygen and sulfur and E.sup.1 and E.sup.2 are individually selected from hydrogen, lower alkyl groups, cycloalkyl groups and aryl groups;
- n is an integer of at least 2;
- and
- represents the remainder of the polymer chain;
- provided that at least one half of the R.sup.1 through R.sup.8 groups are hydrogen;
- and
- provided that when there are four or more A groups joined consecutively together in said cation-complexing segment, at least about 30% of the junctures between adjacent A groups having a threo configuration;
- and
- (c) forming the complex between said guest and said host.
Dependencies are inferred from the claim text.