Title: Asymmetric articles with a porous substrate and a polymeric coating extending into the substrate and methods of making the same

Abstract

Asymmetric articles are described including a porous substrate with two opposing major surfaces and a porous structure extending between the surfaces, and a polymeric coating on one of the major surfaces and extending into the porous structure to a depth of the porous structure. Methods for making an asymmetric composite article are also provided, including providing a porous substrate, treating the porous substrate with a plasma treatment or a corona treatment from one major surface to a depth of the porous structure between the two major surfaces. The method further includes applying a coating solution to the treated porous substrate and drying the coating solution to form a composite asymmetric composite article having a polymeric coating on one major surface and extending into the porous structure to the depth of the treated porous structure.

Inventors:

Mok, Michelle M.; Seshadri, Kannan; David, Moses M.; Kirk, Seth M.; Carvajal, Daniel

Issue Date:

2020-10-20

Research Org.:

3M Innovative Properties Company

Sponsoring Org.:

USDOE

OSTI Identifier:

1771520

Patent Number(s):

10807046

Application Number:

15/319,111

Assignee:

3M Innovative Properties Company (St. Paul, MN)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D71/26 - Polyalkenes
B01D71/32 - containing fluorine atoms
B01D67/0086 - {Mechanical after-treatment}
B01D71/42 - Polymers of nitriles, e.g. polyacrylonitrile
B01D69/105 - {Support pretreatment}
B01D71/70 - Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only
B01D71/44 - Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26 - B01D71/42
B01D2323/34 - Use of radiation
B01D67/009 - {with wave-energy, particle-radiation or plasma}
B01D69/127 - {using electrical discharge or plasma-polymerisation}

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DOE Contract Number:  

AR0000098

Resource Type:

Patent

Resource Relation:

Patent File Date: 06/30/2015

Country of Publication:

United States

Language:

English