US 5,460,872 AGranted

Process for coating microporous substrates and products therefrom

AssigneeW. L. Gore & Associates, Inc.

InventorsHuey S. Wu, Eric W. Kaler

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Abstract

In this invention an aqueous colloidal dispersion of submicron size polymer particles is used to coat the internal structure that defines the pores of microporous substrates.

Claims4

Dependent claims

Process for impregnating submicron organic polymer particles into the pores of a microporous substrate, which comprises subjecting the substrate to an aqueous colloidal dispersion of submicron size organic polymer particles, and then drying the substrate.

Dependencies are inferred from the claim text.

Facts

Application: 08/289,165Filed 11 Aug 1994 · continuation in part
Priority: 26 Mar 1993
Granted: 24 Oct 1995
Term ends: Not estimatedThe source records don’t support an estimate.

Classification32 codes

B01D 67/0088
After-treatment of organic or inorganic membranes: physical treatment with compounds, e.g. swelling, coating or impregnation
B01D 39/083
Filter cloth, i.e. woven, knitted or interlaced material: of organic material
B01D 39/1692
Of organic material, e.g. synthetic fibres: other shaped material, e.g. perforated or porous sheets
C08F 20/22
Esters: esters containing halogen

Family

Serial38,573Parent of this division · filed 26 Mar 1993
Serial220,133Parent of this continuation-in-part · filed 30 Mar 1994
US 5,376,441 AParent of this continuation-in-part
US 5,460,872 AThis patent

From the US filing history. Foreign family members aren’t listed.

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