Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Coating or impregnation improves soil repellency – soil...
Reexamination Certificate
2007-07-10
2011-12-06
Salvatore, Lynda (Department: 1786)
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Coated or impregnated woven, knit, or nonwoven fabric which...
Coating or impregnation improves soil repellency, soil...
C442S094000, C008S115510
Reexamination Certificate
active
08071489
ABSTRACT:
A method of imparting oil repellency to flexible, fibrous, nonwoven substrates comprising contacting the substrate with an amphoteric fluorochemical copolymer composition prepared from polymerization of monomers in the following percentages by weight: (a) from about 60% to about 90% of a fluorinated (meth)acrylate monomer of Formula 1 which is Rf-Q-CO—CR═CH2, (b) from about 10% to about 25% of an amine substituted (meth)acrylate or (meth)acylamide monomer of Formula 2 which is CH2═C(R)COZ(CH2)q(CHR)rNR2R3, and (c) from about 1% to about 15% of a substituted (meth)acrylic acid monomer of Formula 3 which is CH2=CR(R5)e—COOH.
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Zhou et al., Preparation and performance measurement of organo-fluorine textile finishing agent, Jingxi Huagong (2002), 19(Zengkan), 77-79; Jingxi Huangong Bianjibu, Nanjing, PRC. Abstract.
Ishikawa et al., Effects of perfluoroalkyl chain length in fluorine-containing agents on oil resistance of paper prepared with the agents, Kami Parupu Kenkyu Happyokai Koen Yoshishu (2004), 72st, 98-101; Kami Parupu Gijutsu Kyokai, Japan. Abstract.
Honda et al., Molecular Aggregation Structure and Surface Properties of Poly(fluoroalkyl acrylate) Thin Films, Macromolecules (2005), 38, 5699-5705.
Heuze Lamia
Huang Hsu-Nan
Pabon Martial Jean-Jacques
Severac Romain
E. I. du Pont de Nemours and Company
Mayer Nancy S.
Salvatore Lynda
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