	US 12,435,199 B2
	Melamine formaldehyde foam with reduced formaldehyde emission
Sebastian Alexander Weisse, Ludwigshafen am Rhein (DE); Zeljko Tomovic, Lemförde (DE); Horst Baumgartl, Ludwigshafen am Rhein (DE); Werner Lenz, Ludwigshafen am Rhein (DE); Tobias Heinz Steinke, Ludwigshafen am Rhein (DE); Bernhard Vath, Ludwigshafen am Rhein (DE); and Iran Otero Martinez, Lemförde (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/607,967
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Apr. 29, 2020, PCT No. PCT/EP2020/061892 § 371(c)(1), (2) Date Nov. 1, 2021, PCT Pub. No. WO2020/221800, PCT Pub. Date Nov. 5, 2020.
Claims priority of application No. 19172375 (EP), filed on May 2, 2019.
Prior Publication US 2022/0325063 A1, Oct. 13, 2022
Int. Cl. C08J 9/40 (2006.01); B29C 44/56 (2006.01); B29C 45/14 (2006.01)

CPC C08J 9/405 (2013.01) [B29C 44/5618 (2013.01); B29C 45/14795 (2013.01); C08J 2201/02 (2013.01); C08J 2361/28 (2013.01)]

2 Claims

1. A method for lowering the formaldehyde emissions of melamine/formaldehyde polymer moldings made from melamine/formaldehyde foams by impregnating the melamine/formaldehyde polymer moldings made from melamine/formaldehyde foams with an aqueous solution a formaldehyde scavenger comprising ethylenediamine bis-acetoacetamide.