Durable hydrophilic coating for a porous hydrophobic polymer sub

Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate

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427538, 427539, B05D 306

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active

059451750

ABSTRACT:
A coated porous substrate composed of a hydrophobic polymer which is substantially uniformly coated with a hydrophilic polymeric material. The substrate may be a sheet-like material, examples of which are foams, fibers, and fibrous webs. The fibrous webs desirably will be nonwoven webs. The coating on the substrate is durable to an aqueous medium at a temperature in a range of from about 10.degree. C. to about 50.degree. C. and does not significantly suppress the surface tension of an aqueous medium with which the coated substrate may come in contact. The hydrophobic polymer may be a polyolefin, such as polyethylene or polypropylene. The hydrophilic polymeric material with which the polymer fibers are coated may be a polysaccharide or a modified polysaccharide. Also provided is a method of preparing a coated porous substrate which involves providing a porous substrate composed of a hydrophobic polymer. At least a portion of the substrate then is exposed to a field of reactive species. At least a portion of the porous substrate, including the portion exposed to the reactive species, is treated with a mixture which includes water and a hydrophilic polymeric material under conditions sufficient to substantially uniformly coat the porous substrate with the hydrophilic polymeric material.

REFERENCES:
patent: 4009037 (1977-02-01), Mann et al.
patent: 4136218 (1979-01-01), Nischwitz et al.
patent: 4144886 (1979-03-01), Holst et al.
patent: 4200558 (1980-04-01), Holst et al.
patent: 4601911 (1986-07-01), Ueno et al.
patent: 4649026 (1987-03-01), Postle et al.
patent: 4668359 (1987-05-01), Postle et al.
patent: 4777046 (1988-10-01), Iwakura et al.
patent: 5147343 (1992-09-01), Kellenberger
patent: 5258221 (1993-11-01), Meirowitz et al.
patent: 5294476 (1994-03-01), Wanek et al.
Gatenholm, Adv. Org. Coat.Sci. Technol. Ser. (1991), 13, 335-44.
Abstract of JP-63301234 dated Aug. 12, 1988.
Abstract of JP-2006848 dated Jun. 24, 1988 (Application JP-2-6848 dated Jan. 11, 1990).
Abstract of JP 6-2191569 dated Aug. 21, 1987 (Application JP-029774 dated Feb. 13, 1987).
"Fabrication of a Continuous Wettability Gradient by Radio Frequency Plasma Discharge", by W. G. Pitt, Journal of Colloid and Interface Science, pp. 223-227, vol. 133, No. 1, Nov. 1989.
"Gradient Surface Modifications of Nonwovens Controlled Wettability", 10.sup.th Kimberly-Clark Technical Conference, Sep. 10-13, (1995).
"Hydrophobicity Gradient on Silica Surfaces: A Study Using Total Internal Reflection Fluorescence Spectroscopy, Colloids and Surfaces", 25 (1987), pp. 185-190, (1988) Elsevier Science Publishers B.V., The Netherlands.
"A New Technique to Prepare Gradient Surfaces Using Density Gradient Solutions", by C.G. Golander, et al., Colloids and Surfaces, 42 (1989), pp. 165-172, 1989 Elsevier Science Publishers B.V., The Netherlands.
"Spatially Resolved Adsorption Kinetics of Immunoglobulin G onto the Wettability Gradient Surface", Vladimir Hlady, Applied Spectroscopy, pp. 246-252, vol. 45, No. 2, (1991).
"Wettability Gradient Surfaces Prepared by Corona Discharge Treatment", J. H. Lee, et al., The 17.sup.th Annual Meeting of the Society for Biomaterials, May 1-5, 1991, Scottsdale, Arizona, U.S.A.
"A Wettability Gradient Method for Studies of Macromolecular Interactions at the Liquid/Solid Interface", Hans Elwing, et al., Journal of Colloid and Interface Science, pp. 203-210, vol. 119, No. 1, Sep. 1987.

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