Melamine-formaldehyde foams and manufacturing method thereof
AssigneeDONGSUNG CHEMICAL Co., Ltd.
InventorsPanseok Seo, Youngdo Park, Byungyoun Gwack, Sunghun Kim, Gakgyu Choi
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Abstract
A melamine-formaldehyde foam manufactured by including a melamine-formaldehyde condensate that has a weight average molecular weight (Mw) in a range of 1000 to 10,000 g/mol, a solid content in a range of 60 to 80 percent by weight (wt %), and a viscosity in a range of 1000 to 10,000, and a method of manufacturing the melamine-formaldehyde foam. The melamine-formaldehyde foam can have a uniform cell structure, while exhibiting excellent mechanical properties such as tensile strength and elongation.
Claims6
A melamine-formaldehyde foam, prepared by comprising a melamine-formaldehyde condensate having:
- a weight average molecular weight in a range of 1000 to 10,000 g/mol,
- a solid content in a range of 60 to 80 percent by weight (wt %), and
- a viscosity in a range of 1000 to 10,000 cps,
- wherein a cell size of the melamine-formaldehyde foam is in a range of 30 to 300 μm,
- a standard deviation of the cell size is in a range of 0 to 40 μm, and
- a cell thickness is 10 μm or less.
A melamine-formaldehyde foam manufactured by a method comprising:
- (i) preparing the melamine-formaldehyde condensate, which has a weight average molecular weight of 1000 to 10,000 g/mol, a solid content of 60 to 80 percent by weight (wt %), and a viscosity of 1000 to 10,000 cps, by condensing one or more melamine-based compounds and one or more formaldehyde-based compounds;
- and
- (ii) mixing a solution comprising a fluorine-based compound to the melamine-formaldehyde condensate, and then applying a mixture of the fluorine-based compound and the melamine-formaldehyde condensate.
Dependencies are inferred from the claim text.