Compositions – Durable finishes for textile materials – or processes of... – Oil or water repellent or soil resistant or retardant
Patent
1999-09-24
2000-12-19
Gupta, Yogendra
Compositions
Durable finishes for textile materials, or processes of...
Oil or water repellent or soil resistant or retardant
252 861, 106 2, 4273934, D06M 900, C09K 300
Patent
active
061623695
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to fluorochemical compositions for the treatment of substrates, in particular fibrous substrates such as textiles to impart stain release properties to those substrates.
BACKGROUND OF THE INVENTION
Fluorochemical compositions for the treatment of substrates such as leather, textiles, and paper, are well known and are used to impart various properties to the substrate such as water and/or oil repellency, waterproofness, stain release, and anti-staining. For example, U.S. Pat. No. 5,276,175 discloses isocyanate derivatives comprising fluorochemical oligomers. In particular, the disclosed fluorochemical compositions comprise fluorinated compounds, wherein the fluorinated compound comprises a fluorochemical oligomeric portion, an organic moiety, and a group that can impart soft hand, stain release, water repellency, or a durable property when applied to a fibrous substrate, and wherein the fluorochemical oligomeric portion is bonded to the organic moiety through an isocyanate-derived linking group. Substrates treated with such compositions are shown to exhibit durable and abrasion-resistant oil and water repellency. Further, in one of the examples, a fluorochemical composition based on a condensate of a triisocyanate, a fluorochemical oligomer and a methoxypolyethyleneoxide glycol is described. Stain release properties for this composition were demonstrated on a polyester/cotton blend fabric.
U.S. Pat. No. 5,350,795 discloses fluorochemical compositions for treating textile fibers and fabrics to impart oil and water repellency without thermal treatment. The compositions comprise an aqueous, substantially organic-solvent-free, solution or dispersion of (a) a fluorochemical acrylate copolymer comprised of a fluorinated acrylate monomer, polyalkylene glycol acrylate or methacrylate, or polyalkylene glycol diacrylate or dimethacrylate; and (b) a polyalkoxylated polyurethane having pendant perfluoroalkyl groups comprised of an aliphatic or aromatic tri- or higher order isocyanate, a fluorinated alcohol, amine, or mercaptan, and a poly(oxyalkylene) diol or dithiol.
U.S. Pat. No. 4,788,287 and U.S. Pat. No. 4,792,354 disclose a water and oil repellent compound having at least two terminal segments and an intermediate segment connecting the terminal segments that has a molecular weight of from 800 to 20,000. Each terminal segment of the compound contains at least one polyfluoroalkyl group connected by a --CONH-linking group, the intermediate segment is a urethane oligomer that contains at least two --CONH-- linking groups in one molecule, and the terminal segments and intermediate segment are connected by a --CONH-- linking group. The urethane oligomer of U.S. Pat. No. 4,792,354 further contains a hydrophilic molecular chain.
U.S. Pat. No. 5,491,261 discloses di-, tri- and poly-perfluoroalkyl-substituted alcohols and acids and derivatives thereof which are prepared from perfluoroalkyl iodides and di-, tri- or polyalkyl alcohols or acids. They can be reacted with isocyanates, epoxy compounds, anhydrides, acids or acid derivatives to prepare a great variety of oil- and water-repellent compositions.
Fluorochemical compositions are also used to facilitate stain or soil release from a substrate such as a fabric. Routine treatments of fabrics with various modifying additives such as softeners, stiffeners, and lubricants to impart desired properties to a commercial fabric typically increase the oleophilicity of the fabric, thereby significantly increasing its tendency to accept oily stains and reducing its ability to release such stains after laundering. Fluorochemical compositions based on a mixture of a fluorinated compound and a non-fluorinated hydrophilic compound, or on a chemical "hybrid" compound that contains fluorochemical oleophobic segments ("F") and non-fluorinated hydrophilic segments ("H") are known to act as stain release compositions since they provide oil repellency during normal wear and inhibit wicking or diffusion of oily soils into the fabric or fi
REFERENCES:
patent: 2803615 (1957-08-01), Ahlbrecht et al.
patent: 2841573 (1958-07-01), Ahlbrecht et al.
patent: 3269961 (1966-08-01), Bruson et al.
patent: 3574791 (1971-04-01), Sherman et al.
patent: 3920614 (1975-11-01), Kirimoto et al.
patent: 4046944 (1977-09-01), Mueller et al.
patent: 4399077 (1983-08-01), Vanlerberghe et al.
patent: 4508916 (1985-04-01), Newell et al.
patent: 4540765 (1985-09-01), Koemm et al.
patent: 4563493 (1986-01-01), Fukui et al.
patent: 4695488 (1987-09-01), Hisamoto et al.
patent: 4778915 (1988-10-01), Lina et al.
patent: 4788287 (1988-11-01), Matsuo et al.
patent: 4792354 (1988-12-01), Matsuo et al.
patent: 4841090 (1989-06-01), Patel
patent: 4859754 (1989-08-01), Maekawa et al.
patent: 4920190 (1990-04-01), Lina et al.
patent: 5100954 (1992-03-01), Itoh et al.
patent: 5107033 (1992-04-01), Pechold
patent: 5276175 (1994-01-01), Dams et al.
patent: 5292796 (1994-03-01), Dams et al.
patent: 5324763 (1994-06-01), Rossler et al.
patent: 5350795 (1994-09-01), Smith et al.
patent: 5453540 (1995-09-01), Dams et al.
patent: 5491261 (1996-02-01), Haniff et al.
patent: 5509939 (1996-04-01), Kirchner
patent: 5672651 (1997-09-01), Smith
patent: 5841027 (1998-11-01), Scarffe
X-H. Yu et al., "Synthesis and Physical Properties of Poly(fluoralkylether) urethanes", Journal of Applied Polymer Science, vol. 41, 1777-1795 (1990).
Allewaert Kathy E. M. L. A.
Vander Elst Pierre J.
3M Innovative Properties Company
Gupta Yogendra
Kokko Kent S.
Webb Gregory E.
LandOfFree
Fluorochemical composition comprising a polyurethane having a fl does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluorochemical composition comprising a polyurethane having a fl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluorochemical composition comprising a polyurethane having a fl will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-268474