Patent application EP19180191A (EP), filed 2019-06-14
Publication number: EP3750935A1
Title: NON-COMBUSTIBLE WATERBORNE SELF LEVELLING EPOXY FLOOR
Abstract: The present invention relates to an epoxy composition including- a waterborne hardener component containing an amine functional adduct, which is a reaction product of at least one polyether amine, at least one polyalkylene amine, at least one arylaliphatic or cycloaliphatic amine, at least one polyether epoxy resin and at least one aromatic liquid epoxy resin,- a resin component containing at least one liquid epoxy resin and- mineral fillers,wherein the composition contains mineral fillers in the range of 85 to 95 weight-% based on the total solids of the composition.The inventive epoxy composition enables floor coatings with low emission, low shrinkage and high impact resistance, which can be applied in a layer thickness of 1 to 3 mm or more in one step, cure to a decorative, faultless and glossy surface without the need to be overcoated and generate a low enough heat upon burning to fulfill the fire classification A2fl according to EN 13501-1.
IPC codes: B32B  15/   092            A I
B32B  27/    38            A I
C07C 253/    28            A I
C08G  59/    18            A I
C08G  59/    56            A I
C08G  59/    60            A I
C08G  65/   333            A I
C08L  63/    00            A I
C09D 163/    00            A I
C09K   3/    00            A I
Claims: number: 1
text: Epoxy composition including
number: 2
text: Epoxy composition according to claim 1, wherein the polyether amine is a polyoxypropylene diamine with an average molecular weight M<n> in the range of 200 to 2'000 g/mol, preferably 200 to 500 g/mol.
number: 3
text: Epoxy composition according to any one of claims 1 to 2, wherein the polyalkylene amine is an amine of the formula (I),
number: 4
text: Epoxy composition according to any one of claims 1 to 3, wherein the arylaliphatic or cycloaliphatic amine has two primary amine groups, is free from secondary or tertiary amine groups and has a molecular weight in the range of 100 to 300 g/mol.
number: 5
text: Epoxy composition according to any one of claims 1 to 4, wherein the polyether epoxy resin is a polypropylene glycol diglycidylether.
number: 6
text: Epoxy composition according to any one of claims 1 to 5, wherein the overall ratio between the primary amine groups and the epoxy groups in the reaction to form the amine functional adduct is in the range of 1.5 to 4.
number: 7
text: Epoxy composition according to any one of claims 1 to 6, wherein the resin component is a waterborne resin component and contains water in the range of 20 to 50 weight-%, preferably 30 to 40 weight-%, based on the total of the resin component.
number: 8
text: Epoxy composition according to any one of claims 1 to 7, which includes additionally a filler component.
number: 9
text: Epoxy composition according to claim 8, wherein the filler component consists essentially of a technical grade of a quartz sand with a particle size in the range of 0.05 to 0.5 mm.
number: 10
text: Epoxy composition according to any one of claims 1 to 9, wherein the waterborne hardener component contains
number: 11
text: Epoxy composition according to any one of claims 1 to 10, wherein the resin component contains
number: 12
text: Method for coating, comprising the steps of
number: 13
text: Method according to claim 12, wherein the substrate is a floor.
number: 14
text: Article containing the cured epoxy composition, which was obtained by the method according to any one of claims 12 to 13.
number: 15
text: Use of a waterborne hardener containing an amine functional adduct, which is the reaction product of
Office action: search_report, dated 2020-12-16
Prior art cited: ref_id: WO2018166897A1
ref_type: patent
severity: background
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ref_id: US2015094400A1
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ref_type: patent
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severity: background
Final disposition: pending (2020-12-16)