	US 12,104,052 B2
	Consolidated nonwoven
Henrik Schmidt, Ludwigshafen am Rhein (DE); Stefan Jesberger, Ludwigshafen am Rhein (DE); and Thorsten Habeck, Ludwigshafen am Rhein (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Filed by BASF SE, Ludwigshafen am Rhein (DE)
Filed on Sep. 10, 2021, as Appl. No. 17/471,478.
Claims priority of application No. 20195705 (EP), filed on Sep. 11, 2020.
Prior Publication US 2022/0081548 A1, Mar. 17, 2022
Int. Cl. C08L 33/26 (2006.01); C08L 3/02 (2006.01); C08L 25/14 (2006.01); C08L 29/04 (2006.01); C08L 33/08 (2006.01); C08K 3/22 (2006.01); E04D 1/20 (2006.01); E04D 1/22 (2006.01)

CPC C08L 33/26 (2013.01) [C08L 3/02 (2013.01); C08L 25/14 (2013.01); C08L 29/04 (2013.01); C08L 33/08 (2013.01); C08K 2003/2206 (2013.01); E04D 1/205 (2013.01); E04D 1/22 (2013.01)]

16 Claims

1. A consolidated nonwoven consolidated by treatment with an aqueous binder composition comprising:

1-99% by weight of a polymer P,

1-70% by weight of a polyvinylalcohol,

0-10% by weight of a starch compound S and

0-10% by weight of at least one metal compound M selected from the group consisting of magnesium, calcium and zinc, in the form of an oxide, hydroxide, carbonate or bicarbonate,

wherein the polymer P is obtained by free radical aqueous emulsion polymerization of a monomer mixture of

75 to 99% by weight of one or more monomers a) selected from the group consisting of esters of one or more of acrylic and methacrylic acid with alkanols of 1 to 12 carbon atoms, aliphatic conjugated diene and aromatic vinyl compound,

1 to 25% by weight of one or more monomers b) selected from the group consisting of N-methylolacrylamide, N-methylolmethacrylamide, glycidyl methacrylate and carboxylic acid-functional ethylenically unsaturated monomers, and

≥0 to 15% by weight of one or more further ethylenically unsaturated monomer c) different from any of monomers a) and b),

wherein the amounts of monomers a) to c) sum to 100 wt %.