US 12,404,630 B2
Method for the production of a microporous polymer coated fabric
Brian Haakmeester, Ootmarsum (NL); and Pieter Gerardus Antonius Maria Van Der Maas, Ootmarsum (NL)
Assigned to Betjo Beheer B.V., Ootmarsum (NL)
Appl. No. 17/916,650
Filed by Betjo Beheer B.V., Ootmarsum (NL)
PCT Filed Apr. 16, 2021, PCT No. PCT/NL2021/050247
§ 371(c)(1), (2) Date Oct. 3, 2022,
PCT Pub. No. WO2021/210983, PCT Pub. Date Oct. 21, 2021.
Claims priority of application No. 2025360 (NL), filed on Apr. 17, 2020.
Prior Publication US 2023/0167602 A1, Jun. 1, 2023
Int. Cl. D06N 3/14 (2006.01); A47L 13/16 (2006.01); C09D 7/20 (2018.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 175/04 (2006.01); D06N 3/00 (2006.01); C08K 3/26 (2006.01); C08K 5/09 (2006.01)
CPC D06N 3/14 (2013.01) [A47L 13/16 (2013.01); C09D 7/20 (2018.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 175/04 (2013.01); D06N 3/0061 (2013.01); D06N 3/0063 (2013.01); D06N 3/0088 (2013.01); C08K 2003/262 (2013.01); C08K 5/09 (2013.01); D06N 3/0006 (2013.01); D06N 3/0009 (2013.01); D06N 3/0011 (2013.01); D06N 2203/068 (2013.01); D06N 2205/24 (2013.01); D06N 2209/141 (2013.01); D06N 2209/1635 (2013.01); D06N 2211/08 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for the production of a microporous polymer coated fibrous fabric, wherein the method comprises the steps of;
a) contacting the fabric with a composition dispersed in in an aqueous medium thereby coating the fabric with the composition, wherein the composition is comprised of 1 to 20 wt % of an anionic polymer resin comprising one or more carboxylic acid groups, and 0.1 to 5 wt % of a cationic solvent, based on the total weight of the composition,
b) contacting the coated fabric with a coagulation solution, wherein said coagulation solution is an acid solution, thereby precipitating the polymer resin on and/or in the fabric,
c) drying of the fabric and crosslinking the polymer resin.