Foam compositions comprising polylactic acid polymer, polyvinyl acetate polymer and plasticizer, articles, and methods of making and using same

Foam compositions are provided including a polylactic acid polymer; second (e.g., polyvinyl acetate) polymer having a glass transition temperature (Tg) of at least 25° C.; and plasticizer. Also described are articles comprising the foam compositions, such as a sheet or hearing protection article. Me...

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Bibliographische Detailangaben
Hauptverfasser:	Zhou, Ning, Meree, Caitlin E, Coffin, Robert C, Pennington, Paul D, Emslander, Jeffrey O, Hedegaard, Aaron T, Fishman, Joshua M, Ali, Mahfuza B, Baran, Jr., Jimmie R, Young, Jacob D, Hobbs, Terry R, Lin, Ying, Kolb, Brant U, Givot, Bradley L, Bolton, Justin M, Fansler, Duane D, Dehn, Derek J
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BANDAGES, DRESSINGS OR ABSORBENT PADS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION GENERAL PROCESSES OF COMPOUNDING HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS ORGANIC MACROMOLECULAR COMPOUNDS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PHYSICS PROSTHESES SOUND-PRODUCING DEVICES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OR PROTECTION OF EYES OR EARS WORKING-UP
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Beschreibung
Zusammenfassung:	Foam compositions are provided including a polylactic acid polymer; second (e.g., polyvinyl acetate) polymer having a glass transition temperature (Tg) of at least 25° C.; and plasticizer. Also described are articles comprising the foam compositions, such as a sheet or hearing protection article. Methods of making and using the foam compositions are further described herein.