29-01-2015 дата публикации
Номер: US20150030847A1
Принадлежит:
Use of an antioxidant being a sterically hindered phenol for increasing the drawdown speed of a low density polyethylene in an extrusion coating process. 2. Article according to claim 1 , wherein the amount of primary antioxidant (PAO) is in the range of 15 to 2 claim 1 ,500 ppm and optionally at least in an amount preventing a change of the melt flow rate MFR(190° C.) of the composition (Co) during extrusion coating of more than 40%.3. Article comprising a substrate and at least one polymer layer claim 1 , said polymer layer is extrusion coated on the substrate claim 1 , wherein the polymer layer comprises a composition (Co) comprising a low density polyethylene (LDPE) and a primary antioxidant (PAO) claim 1 , wherein:{'sub': '2', 'the polymer layer and/or the composition (Co) has/have a melt flow rate MFR(190° C.) of at least 2.0 g/10 min,'}{'sub': '2', 'wherein further the amount of primary antioxidant (PAO) is in the range of 15 to 2,500 ppm and at least in an amount preventing a change of the melt flow rate MFR(190° C.) of the composition (Co) during extrusion coating of more than 40%.'}6. Article according to claim 1 , wherein:(a) the primary antioxidant (PAO) is selected from the group consisting of 2,6-di-tert.butyl-4-methyl phenol, pentaerythrityl-tetrakis(3-(3′,5′-di-tert.butyl-4-hydroxyphenyl)-propionate, octadecyl 3-(3′,5′-di-tert.butyl-4-hydroxyphenyl)propionate, 1,3,5-tri-methyl-2,4,6-tris-(3,5-di-tert.butyl-4-hydroxyphenyl)benzene, 1,3,5-tris(3′,5′-di-tert.butyl-4′-hydroxybenzyl)-isocyanurate, bis-(3,3-bis-(4-′-hydroxy-3′-tert.butylphenyl)butanic acid)-glycolester, N,N′-hexamethylene bis(3,5-di-tert.butyl-4-hydroxy-hydrocinnamamide, 2,5,7,8-Tetramethyl-2(4′,8′,12′-trimethyltridecyl)chroman-6-ol, 2,2′-ethylidenebis(4,6-di-tert.butylphenol), 1,1,3-tris(2-methyl-4-hydroxy-5-tert.butylphenyl) butane, 1,3,5-tris(4-tert.butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione, 3,9-bis(1,1-dimethyl-2-(beta-(3-tert.butyl-4-hydroxy-5- ...
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