Polymer composition with improved storage stability

A polymer composition (I) comprising at least the following components:

• (A) 87.00 to 99.79 wt. % based on the overall weight of the polymer composition (I) of a polymer selected from an ethylene-vinylacetate copolymer, a polyolefin elastomer or a polymer of ethylene (a), wherein the polymer of ethylene (a) is selected from
• (a1) a copolymer of ethylene which bears functional groups containing units;
• (a2) a copolymer of ethylene comprising one or more polar comonomer unit(s) selected from (C1-C6)-alkyl acrylate or (C1-C6)-alkyl (C1-C6)-alkyl acrylate comonomer units, and bears functional groups containing units different from said polar comonomer unit(s);
• and
• (a3) a copolymer of ethylene comprising one or more alpha-olefin comonomer unit(s);
• and bears functional groups containing units different from said polar comonomer unit(s) of polymer (a2);
• or mixtures thereof;
• and
• wherein said functional groups containing units of polymer (a) are silane group(s) containing units (b);
• (B) 0.20 to 10.00 wt. % based on the overall weight of the polymer composition (I) of a copolymer of ethylene, which bears functional group containing units originating from at least one unsaturated carboxylic acid and/or its anhydrides, metal salts, esters, amides or imides and mixtures thereof, whereby component (B) is different from component (A);
• (C) 0.01 to 3.00 wt. % based on the overall weight of the polymer composition (I) of a compound according to Formula (a);
• and
• optionally the following component (B2) and/or component (D):
• (B2) a copolymer of ethylene and (meth)acrylic acid, whereby component (B2), if present, is different from components (A) and (B);
• (D) at least one additive selected from the group consisting of antioxidants, UV light stabilizers, metal deactivators, nucleating agents, clarifiers, optical brighteners, acid scavengers, slip agents, pigments, fillers and flame retardants, tackifiers, plasticisers, crosslinking agents, crosslinking boosters, wavelength-shifting agents and mixtures thereof,
• whereby components (A), (B) and (C), and if present, component (B2) and/or component (D), add up to 100 wt. %.