Abstract: Open cell foamed articles including silane-grafted single-site inititiated polyolefin resins are described. The single-site initiated olefin polymer resin can be a polyethylene, a copolymer of ethylene, a C3-C20 alpha-olefin, or a copolymer of ethylene, a C3-C20 alpha-olefin and a C4-C20 diene. The open cell foamed articles have good cushioning properties and can be non-allergenic.
Type:
Grant
Filed:
June 11, 1997
Date of Patent:
January 12, 1999
Assignee:
Sentinel Products Corp.
Inventors:
Matthew L. Kozma, John D. Bambara, Robert F. Hurley
Abstract: The invention relates to physically-blown low density polyethylene (LDPE) foams that are blends of an LDPE resin and a silane-grafted single-site initiated polyolefin resin. The LDPE resin generally has a density between about 0.91 and about 0.93 g/cm.sup.3 and a melt index greater than 1, and the silane-grafted single-site initiated polyolefin resin generally is a copolymer of ethylene and a C.sub.3 -C.sub.20 alpha-olefin that has a density between about 0.86 and about 0.96 g/cm.sup.3 and a molecular weight distribution between about 1.5 and about 3.5.
Type:
Grant
Filed:
April 26, 1996
Date of Patent:
December 1, 1998
Assignee:
Sentinel Products Corp.
Inventors:
Robert F. Hurley, John D. Bambara, Michael Bambara, Richard Bambara