Gas permeable materials

Details Gas permeable materials Gas permeable materials

1992-12-14

1993-09-07

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

55527, 428253, 428255, 428260, 428262, 428289, 428290, 4283044, 428421, 428422, 428514, B32B 700

Patent

active

052427471

ABSTRACT:
A gas permeable material having continuous pores through it, in which the pore interiors are coated with the reaction product of a) an ester of a perfluoroalkyl alcohol and a poly-basic hydroxyl-containing carboxylic acid, and b) a melamine formaldehyde, urea-formaldehyde, or glycol modified formaldehyde. The material is oleophobic and is useful in filtration applications and in garments.

REFERENCES:
patent: 4014857 (1977-03-01), Schmoyer

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