This invention provides compositions for treating fibrous substrates to render those substrates durably repellent to water and oil and durably resistant to dry soil comprising a fluorochemical urethane formed by reacting a tri- or higher order isocyanate with a fluorochemical monofunctional compound; and optionally a non-fluorinated aliphatic monofunctional compound. The present invention also provides a method of treating fibrous substrates to render those substrates durably repellent to water and oil and durably resistant to dry soil comprising application of the aforementioned composition to a fibrous substrate with optionally one or more hydrophilic anti-staining compounds such as acrylic and methacrylic acid polymers and copolymers, sulfonated phenol-formaldehyde resins, and styrene-maleic anhydride polymers and copolymers, said application of the composition taking place either coincident with or following application of the hydrophilic anti-staining compound or compounds to the substrate. Fibrous substrates treated according to this method and fibrous substrates treated with the aforementioned compositions are also disclosed.
申请公布号
WO03048224(A1)
申请公布日期
2003.06.12
申请号
WO2002US31981
申请日期
2002.10.07
申请人
3M INNOVATIVE PROPERTIES COMPANY
发明人
CLARK, JOHN C.,;BURLEIGH, MALCOLM B.,;JARIWALA, CHETAN P.,;QIU, ZAI-MING