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.
Claims23
A film 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:
- {(Rf)n—Q—O—C(O)}p—A
- {(Rf)n—Q—C(O)—O}p—A′
- {(Rf)n—Q—N(R)—C(O)}p—A
- {(Rf)n—Q—C(O)—N(R)}p—A′
- wherein:
- Rr 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 method of rendering synthetic organic polymer hydrophobic and oleophobic comprising blending with the polymer one or more fluorochemicals selected from the group consisting of compounds depicted by the formulas:
- {(Rf)n—Q—O—C(O)}p—A
- {(Rf)n—Q—C(O)—O}p—A′
- {(Rf)n—Q—N(R)—C(O)}p—A
- {(Rf)n—Q—C(O)—N(R)}p—A′
- wherein:
- Rf 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 molded article 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:
- {(Rf)n—Q—O—C(O)}p—A
- {(Rf)n—Q—C(O)—O}p—A′
- {(Rf)n—Q—N(R)—C(O)}p—A
- {(Rf)n—Q—C(O)—N(R)}p—A′
- wherein:
- Rf 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.
Dependencies are inferred from the claim text.