13-05-2021 дата публикации
Номер: US20210139661A1
The present invention relates to packaging material comprising a plastic substrate comprising at least one surface, and a barrier layer for hydrophobic substances, wherein the barrier layer is in contact with the at least one surface of the plastic substrate, wherein the barrier layer comprises a copolymer, a surface-reacted calcium carbonate, and a mineral material selected from natural ground calcium carbonate and/or precipitated calcium carbonate, as well as a method for producing the same and its use. 1. A packaging material comprisinga plastic substrate comprising at least one surface, anda barrier layer for hydrophobic substances, wherein the barrier layer is in contact with the at least one surface of the plastic substrate, and [ [{'sub': 1', '4, '(i) one or more principal monomers selected from the group consisting of C-Calkyl (meth)acrylates, and'}, '(ii) 0.1 to 5 wt.-% of one or more acid monomers,, '(I) a copolymer obtainable by emulsion polymerization of'}, {'sub': 'g', 'wherein the glass transition temperature Tof the copolymer is from −10 to 70° C., and the emulsion polymerization is carried out in an aqueous medium in the presence of at least one carbohydrate compound,'}, {'sub': 3', '3, 'sup': +', '+, '(II) a surface-reacted calcium carbonate, wherein the surface-reacted calcium carbonate is a reaction product of natural ground calcium carbonate or precipitated calcium carbonate with carbon dioxide and one or more HO ion donors, wherein the carbon dioxide is formed in situ by the HO ion donors treatment and/or is supplied from an external source, and'}, '(III) a mineral material selected from natural ground calcium carbonate and/or precipitated calcium carbonate,', 'wherein the weight ratio of the surface-reacted calcium carbonate to the mineral material is from 1:10 to 1:0.01., 'wherein the barrier layer comprises'}2. The packaging material of claim 1 , wherein the plastic substrate is a plastic film claim 1 , a plastic sheet claim 1 , a plastic ...
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