Method for durable hydrophilization of a hydrophobic surface

Details Method for durable hydrophilization of a hydrophobic surface Method for durable hydrophilization of a hydrophobic surface

2005-12-09

2009-02-24

Salvatore, Lynda (Department: 1794)

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Coated or impregnated woven, knit, or nonwoven fabric which...

Coating or impregnation is water absorbency-increasing or...

C604S358000, C442S394000

Reexamination Certificate

active

07494944

ABSTRACT:
A method for hydrophilizing a hydrophobic surface of a substrate includes the steps of (a) defining a temperature range of: (i) greater than or equal to an anticipated lower use temperature (LUT), or (ii) less than or equal to an anticipated upper use temperature (UUT), or (iii) from a LUT to an UUT, wherein LUT≦UUT, within which the substrate is intended to be used in the presence of water, and (b) depositing at least one polymer on at least a portion of the surface, said polymer being soluble in water to the extent that an aqueous solution of such polymer exhibits: (i) a lower critical solution temperature (LCST), wherein LCST<LUT, or (ii) an upper critical solution temperature (UCST), wherein UUT<UCST, or (iii) a LCST and a UCST, wherein UCST<LCST and: (1) LCST<LUT, or (2) UUT<UCST.

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Schauer, T., “Organic polymer treatment—the way to modern pigments,” International Union of Pure and Applied Chemistry, pp. 1-9 (1999).

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