Alkyl ammonium ionomers
AssigneeExxon Research & Engineering Co.
InventorsDouglas Brenner, Alexis A. Oswald
Life of this patent
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Abstract
Ionomers comprising higher alkyl ammonium or quaternary polyammonium salts of polyacids, particularly sulfonic acids, having anionic groups covalently bonded to carbon atoms comprising a backbone chain of a polymer, or to acyclic, alicyclic or aromatic radicals which are pendant to the backbone chain of the polymer, are novel compositions of matter. These ionomers vary in properties from water-soluble polyelectrolytes useful as thickening agents to thermoplastic elastomers which can be extruded, injection molded, vacuum formed, etc. at elevated temperatures. The elastomers are useful as specialty and general purpose rubbers.
Claims32
Polymers having the general formula:
- [C--A.sup.- ].sub.p+1 R.sub.3 N.sup.+ [Q--R.sub.2 N.sup.+ ].sub.P R
- wherein C is one of a plurality of carbon atoms comprising a portion of the polymer backbone chain of carbon atoms or is in an acyclic, alicyclic or aromatic radical which is pendant to the backbone chain and wherein said C is in a single polymer molecule;
- A.sup.- is an anionic radical covalently bonded to one or more of said C carbon atoms;
- and wherein the R groups represent substituents of the nitrogen atom(s) which are each independently selected from the group comprising hydrogen or C.sub.1 to C.sub.50 straight and branched chain acyclic, alicyclic, aryl, alkylaryl, and arylalkyl radicals and substituted functional derivatives thereof, wherein at least one of the R groups is selected from the group comprising C.sub.12 to C.sub.50 straight and branched chain acyclic, alicyclic, aryl, alkylaryl, and arylalkyl radicals and substituted functional derivatives thereof, and wherein each Q is independently selected from the group comprising C.sub.1 to C.sub.40 divalent straight and branched chain alkylene, cycloalkylene, arylene, dialkylene-arylene radicals and substituted functional derivatives thereof and --(CHY).sub.n --Z.sub.m --(CHY).sub.n, wherein Z is a hetero atom selected from the group consisting of oxygen and sulfur, m is zero or one, Y is hydrogen or said C.sub.1 to C.sub.50 radicals or substituted functional derivatives of said radicals and n is an integer of from 1 to 10, wherein p is from zero (for a monoammonium counterion) to about 10, and wherein said ammonium counterion at least partially neutralizes said anionic acid radicals.
Sulfonated polymers neutralized with di- or polyammonium quaternary counterions having the general formula:
- [C--SO.sub.3 -].sub.p+1 R'.sub.3 N.sup.+ [--Q--R'.sub.2 N.sup.+ ].sub.P R'
- wherein C is one of a plurality of carbon atoms comprising a portion of the polymeric backbone chain of carbon atoms or is in an acyclic, alicyclic or aromatic radical which is pendant to the backbone chain and wherein said C is in a single polymer chain, the --SO.sub.3 - groups are covalently bonded to one or more of said C carbon atoms in one or more of said polymeric backbone chains wherein each Q is independently selected from the group comprising C.sub.1 to C.sub.40 divalent straight and branched chain alkylene cycloalkylene, arylene, dialkylene-arylene radicals and substituted functional derivatives thereof and --(CHY).sub.n --Z.sub.m --(CHY).sub.n, wherein Z is a hereto atom selected from the group consisting of oxygen and sulfur, m is zero or one, Y is hydrogen or said C.sub.1 to C.sub.50 radicals or substituted functional derivatives of said radicals and n is an integer of from 1 to 10, wherein p is from one (for diammonium counterion) to about 10, and wherein the R' groups are each independently selected from the group comprising C.sub.1 to C.sub.11 straight and branched chain acyclic, alicyclic, aryl, alkylaryl and arylalkyl radicals and substituted functional derivatives thereof.
Dependencies are inferred from the claim text.