High temperature-stable fluorochemicals as hydrophobic and oleophobic additives to synthetic organic polymers
Assignee3M Innovative Properties Company
InventorsThomas P. Klun, Alton J. Gasper, John A. Temperante
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Abstract
This invention describes hydrophobic and oleophobic fibers, films and molded articles comprising synthetic organic polymer wherein dispersed within the fiber, fabric or molded article and present at the surface of the fiber, fabric or molded article are fluorochemical compounds. Method of preparing such fibers, films and molded articles, as well as articles made therefrom also are disclosed.
Claims21
A hydrophobic and oleophobic fiber comprising a composition prepared by forming a blend comprising synthetic organic polymer and one or more fluorochemicals selected from the group consisting of compounds depicted by the formulas:
- {(R.sub.f).sub.n --Q--O--C(O)}.sub.p --A
- {(R.sub.f).sub.n --Q--C(O)--O}.sub.p --A'
- {(R.sub.f).sub.n --Q--N(R)--C(O)}.sub.p --A
- {(R.sub.f).sub.n --Q--C(O)--N(R)}.sub.p --A'
- wherein:
- R.sub.f is a fluorinated alkyl group bonded through carbon;
- n is 1 or 2;
- Q is a divalent or trivalent linking group or a covalent bond;
- p is 2 or more, up to the valency of A or A';
- R is a hydrogen atom or is a substituted or unsubstituted alkyl group;
- A is the residue of a dimer or trimer acid;
- and
- A' is the residue of a dimer diol, a dimer diamine, a trimer triol, or a trimer triamine.
A hydrophobic and oleophobic fiber comprising a composition prepared by forming a blend comprising synthetic organic polymer and one or more fluorochemicals selected from the group consisting of compounds depicted by the formulas:
- {(R.sub.f).sub.n --Q--O--C(O)}.sub.p --A
- {(R.sub.f).sub.n --Q--N(R)--C(O)}.sub.p --A
- wherein:
- R.sub.f is a substituted or unsubstituted, cyclic or acyclic, linear or branched (or any combination thereof) fluorinated alkyl group bonded through carbon that can optionally contain one or more catenary heteroatoms;
- R.sub.f can contain one or more hydrogen atoms or one or more halogen atoms other than fluorine atoms, provided that at least 75% of the atoms attached to the carbon backbone are fluorine atoms;
- n is 1 or 2;
- Q is selected from the group consisting of --SO.sub.2 N(R')(CH.sub.2).sub.k --, --(CH.sub.2).sub.k --, CON(R')(CH.sub.2).sub.k -- and --(CH.sub.2).sub.k SO.sub.2 N(R')(CH.sub.2).sub.k --, where R' is hydrogen, a phenyl group or is a methyl or ethyl group and where each k is independently an integer from 1 to about 20;
- p is 2 or more, up to the valency of A;
- R is a hydrogen atom or is a substituted or unsubstituted alkyl group;
- and
- A is the residue of a dimer acid, representing an aliphatic moiety containing from about 30 to 170 carbon atoms.
Dependencies are inferred from the claim text.