Patent ID: 8122638
Filing Date: 2012-02-28
Classification: A01G,B32B,Y02A,Y10T

Abstract:
1. A multilayer film comprising: (a) a first outer layer comprising a polymer composition selected from groups (i) or (ii) below or combinations of (i) and (ii), wherein composition (i) comprises from about 10 to 96 weight percent of a (co)polymer of 80 to 100 mole percent C composition (ii) comprises a first through a fourth stage polymer composite wherein the first elastomeric, relatively soft first-stage polymer is polymerized from an aqueous emulsified monomer system containing from about 75-99.8 weight percent of at least one C the second-stage polymer is polymerized, in the presence of the resultant aqueous system from the first-stage polymerization, from an aqueous emulsified monomer system containing about 10-90 weight percent of at least one C wherein the third-stage polymer is polymerized, in the presence of the resultant aqueous system from the second-stage polymerization from an aqueous emulsified monomer system containing about 5-40 weight percent of at least one C the fourth-stage polymer is polymerized, in the presence of the resultant aqueous system from the third-stage polymerization, from an aqueous emulsified monomer system containing about 80-100% weight percent of at least one C (b) a core layer selected from a thermoplastic polyurethane (“TPU”) or polyvinyl butryal (“PVB”); and (c) a second outer layer selected from (i) or (ii) or combinations thereof; wherein the multilayer film has a total thickness of less than about 300 micrometers.