Crosslinked copolymers comprising fluorovinylether functionalized aromatic moieties
AssigneeE. I. Du Pont de Nemours and Company
InventorsOWEN C. COMPTON, Neville Everton Drysdale, Fredrik Nederberg, Soonjoo Son, Judith Johanna Van Gorp
Life of this patent
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Abstract
Disclosed are crosslinked copolymers comprising a copolymer with crosslinks between olefinically unsaturated positions in the backbone of one type of repeat unit and a second repeat unit that is a fluorovinylether functionalized aromatic repeat unit. The crosslinked copolymers are useful for imparting improved soil, water, and oil resistance to materials including fibers, fabrics, carpets, films, plaques, and shaped articles.
Claims22
A crosslinked copolymer material comprising a copolymer comprising a first repeat unit having a backbone and a second repeat unit, wherein said first repeat unit is crosslinked between positions that are olefinically unsaturated in the backbone prior to crosslinking, and said second repeat unit is a fluorovinylether functionalized aromatic repeat unit represented by the structure (I)
- wherein,
- Ar represents a benzene or naphthalene radical;
- each R is independently H, C1-C10 alkyl, C5-C15 aryl, C6-C20 arylalkyl;
- OH, or a radical represented by the structure (II)
- with the proviso that only one R can be OH or the radical represented by the structure (II);
- R1 is a C2-C4 alkylene radical which can be branched or unbranched,
- X is O or CF2;
- Z is H, Cl, or Br;
- a=0 or 1;
- and,
- Q represents the structure (Ia)
- wherein q=0-10;
- Y is O or CF2;
- Rf1 is (CF2)n, wherein n is 0-10;
- and,
- Rf2 is (CF2)p, wherein p is 0-10, with the proviso that when p is 0, Y is CF2.
A process comprising
- (a) combining a fluorovinylether functionalized aromatic diester or diacid, an olefinically unsaturated mono-anhydride, and at least one C2-C4 alkylene glycol, branched or unbranched, to form a reaction mixture, and stirring the reaction mixture to form a copolymer comprising repeat units having the structure (I)
- wherein,
- Ar represents a benzene or naphthalene radical;
- each R is independently H, C1-C10 alkyl, C5-C15 aryl, C6-C20 arylalkyl;
- OH, or a radical represented by the structure (II)
- with the proviso that only one R can be OH or the radical represented by the structure (II);
- R1 is a C2-C4 alkylene radical which can be branched or unbranched,
- X is O or CF2;
- Z is H, Cl, or Br;
- a=0 or 1;
- and,
- Q represents the structure (Ia)
- wherein q=0-10;
- Y is O or CF2;
- Rf1 is (CF2)n, wherein n is 0-10;
- and,
- Rf2 is (CF2)p, wherein p is 0-10, with the proviso that when p is 0, Y is CF2.
- and repeat units having the structure (V) comprising olefinic unsaturation
- wherein R2 is independently H or C1-C10 alkyl;
- and R3 is a C2-C4 alkylene radical;
- wherein the fluorovinyl ether functionalized aromatic diester or diacid is represented by the structure (III)
- wherein,
- Ar represents a benzene or naphthalene radical;
- each R is independently H, C1-C10 alkyl, C5-C15 aryl, C6-C20 arylalkyl;
- OH, or a radical represented by the structure (II)
- with the proviso that only one R can be OH or the radical represented by the structure (II);
- R2 is H or C1-C10 alkyl;
- X is O or CF2;
- Z is H, Cl, or Br;
- a=0 or 1;
- and,
- Q represents the structure (Ia)
- wherein q=0-10;
- Y is O or CF2;
- Rf1 is (CF2)n, wherein n is 0-10;
- and,
- Rf2 is (CF2)p, wherein p is 0-10, with the proviso that when p is 0, Y is CF2,
- (b) mixing the copolymer comprising repeat units having the structure (I) and repeat units having the structure (V) of (a) with at least one crosslinking agent to form a curable composition;
- and
- (c) raising the temperature above room temperature;
- wherein crosslinks form between the olefinically unsaturated positions in structure (V) of (a).
Dependencies are inferred from the claim text.