Compositions for the oil and water repellent finishing of fiber materials
AssigneeCiba Specialty Chemicals Corporation
InventorsFranz Dirschl, Simpert Lüdemann, Edeltraud Schidek, Heinz Gaugenrieder, Wilhelm Artner
Life of this patent
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Abstract
Compositions comprising an ester with perfluoroalkyl groups and an oligo- or polyurethane which may likewise contain perfluoroalkyl groups are useful for the oil and water repellant finishing of sheetlike textile materials. The compositions may additionally include acrylic polymers having perfluoroalkyl groups and extenders. Especially the use of nonionic aqueous dispersions of the compositions makes it possible to obtain textiles with little if any effect losses after mechanical abrasion and good LAD effects.
Claims18
A composition comprising a component A and a component B, component A being an ester or a mixture of esters and being obtainable by reacting a dicarboxylic acid or a mixture of dicarboxylic acids of the formula (I)
- HOOC[Parenclosest]CH R[Parenclosest]aCOOH (I)
- with a diol or a mixture of diols selected from diols of the formulae (II) to (XI)
- [RF1[Parenopenst]CH2[Parenclosest]b[Parenopenst]X—CH2[Parenclosest]c]2C(CH2OH)2 (II)
- HO—CH2—CRR′[Parenopenst]X[Parenclosest]dCRR′—CH2OH (III)
- HO[Parenopenst]CH2[Parenclosest]e[Parenopenst]SiR2—O[Parenclosest]fSiR2[Parenopenst]CH2[Parenclosest]eOH (IV)
- HO—CH2CH2—N R″—CH2CH2OH (V)
- HO[Parenopenst]CHR[Parenclosest]t[Parenopenst]CHR—CHR—O[Parenclosest]gCHR—CHR—OH (VI)
- [RF2[Parenopenst]CH R2[Parenclosest]b1C(R2)(OH)—CH R2—]2X1 (VII)
- [RF2—CH═CH—CH2—Y—CH2—C(R2)(OH)—CH2—]2X1 (VIII)
- [RF2—CH═CH—CH2—Y—CH2—C(R2)(Z)—CH2—]2X1 (IX)
- [RF2—CH═CH—CH2X1—CH2—]2C(CH2OH)2 (X)
- [RF2[Parenopenst]CHR2[Parenclosest]b1C(R2)(Z)—CHR2—]2X1 (XI)
- subject to the proviso that at least one diol of the formula (II) or of the formula (III) or of one of the formulae (VII) to (XI) participates in the reaction, and component B being an oligourethane or polyurethane obtainable by reacting a diol or a mixture of diols selected from diols of the formulae (II) to (XII)
- (HO—CH2)3C—CH2—CH3 (XII)
- with a diisocyanate or a mixture of diisocyanates of the formula (XIII)
- OCN—R′″—NCO (XIII)
- where any R is independently of the others hydrogen or an alkyl radical of 1 to 4 carbon atoms,
- a is from 2 to 10,
- b is from 1 to 4,
- c is 0 or 1,
- d is 0 or 1,
- RF1 is CF3[Parenopenst]CF2[Parenclosest]h1,
- h1 is from 3 to 15,
- R′ is [Parenopenst]CH2[Parenclosest]b RF1 when d is 1 and —X[Parenopenst]CH2[Parenclosest]b RF1 when d is 0,
- e is from 1 to 4,
- f is from 10 to 50,
- g is from 0 to 6,
- t is from 0 to 8,
- X is —O—, —S—, —NR— or —PR—,
- R″ is R or —CH2CH2OH,
- X1 is —O—, —S—, —NR2—, —PR2—, —S[Parenopenst]CH2[Parenclosest]b1S—, [Parenopenst]S[Parenclosest]u, —S(O2)— or
- —S(O2)—(CH2[Parenclosest]b1—S(O2)—,
- Y is —O—, —S—, —NR2— or —PR2—,
- Z is [Parenopenst]CH2[Parenclosest]c1[Parenopenst]OCpH2p[Parenclosest]OCHR—CHR[Parenclosest]d1OH,
- b1 is from 1 to 4,
- c1 is from 0 to 18,
- d1 is from 0 to 8,
- RF2 is CF3[Parenopenst]CF2[Parenclosest]h2,
- h2is from 3 to 19,
- e1 is from 0 to 8,
- any R2 is independently of the others hydrogen or a branched or unbranched alkyl radical of 1 to 18 carbon atoms,
- p is from 3 to 8,
- u is from 2 to 8,
- R′″ is a divalent aliphatic or cycloaliphatic radical of 4 to 40 carbon atoms or is a divalent aromatic radical of the formula
- —C6H3(R)— or —C6H3(R)—CH2—C6H3(R)— or —C6H3(R)—CR2—C6H3(R)—,
- where C6H3 is a trivalent radical derived from benzene, and if desired blocking any isocyanate groups left in the reaction product of diol and diisocyanate.
Dependencies are inferred from the claim text.