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AssigneeDaikin Industries, Ltd.
InventorsIkuo Yamamoto, Yutaka Ohira, Yoshio Funakoshi, Shinichi Minami, Ginjiro Tomizawa
Estimating the term…
Disclosed is a fluorine-containing polymer having: (A) a repeating unit derived from a fluorine-containing monomer which is represented by the following formula: CH2═C(—X)—C(═O)—Y—[—(CH2)m-Z-]p—(CH2)n—Rf (I) (B) a repeating unit derived from a monomer containing no fluorine atom, and if necessary (C) a repeating unit derived from a crosslinkable monomer. This fluorine containing polymer has excellent water repellency, oil repellency and antifouling property.
A fluorine-containing compound of the formula:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Having sulfone or sulfoxide groups and singly-bound oxygen atoms bound to the same carbon skeleton: with sulfone or sulfoxide groups bound to…
Having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton: the carbon skeleton being acyclic and unsaturated
Having cyano groups bound to acyclic carbon atoms: containing cyano groups and carboxyl groups, other than cyano groups, bound to the same…
Having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton: the carbon skeleton being acyclic and saturated
Term ended 29 Jun 2025 (estimated)
The present invention relates to a polymer and a treatment which impart excellent water repellency, oil repellency and soil resistance to a textile, a masonry, a filter (for example, an electrostatic filter), a dust protective mask, and a part of fuel cell.
Hitherto, various fluorine-containing compounds are proposed. The fluorine-containing compounds have the advantageous effects of having properties excellent in heat resistance, oxidation resistance, weather resistance and the like. The fluorine-containing compounds are used as, for example, the water- and oil-repellent agent and soil release agent by utilizing the properties that the fluorine-containing compounds have low free energy, i.e., difficulty in adherence.
Examples of the fluorine-containing compounds used as the water- and oil-repellent agent include a fluorine-containing polymer having repeating units derived from (meth)acrylate ester having a fluoroalkyl group. It is proposed that a (meth)acrylate ester having a spacer which is an organic group positioned between an acrylate group and a fluoroalkyl group is used in the fluorine-containing polymer. Such fluorine-containing polymers having the spacer are disclosed in, for example, U.S. Pat. Nos. 3,655,732, 3,773,826, 3,916,053 and 5,439,998. These fluorine-containing polymers, however, could not impart sufficient water- and oil-repellency.
The fluorine-containing polymer of the present invention comprises (A) repeating units derived from the above-mentioned fluorine-containing compound (a) (that is, the fluorine-containing monomer (a))
The fluorine-containing polymer of the present invention is a homopolymer or copolymer.
In the case that the fluorine-containing polymer is the copolymer, the fluorine-containing polymer may contain: (B) repeating units derived from a monomer free from a fluorine atom, and (C) optionally, repeating units derived from a crosslinkable monomer, in addition to the repeating unit (A).