|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B32B-003/26 B22C-001/22 B22C-001/16 B29C-044/34 C08F-014/00 C08F-036/04 C08F-036/00|
|미국특허분류(USC)||428/304.4; 521/139; 521/142; 521/146; 521/148|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 5 인용 특허 : 141|
A low density, flexible, resilient, absorbent open-cell thermoplastic foam includes a combination of thermoplastic elastomer, ethylene ionomer, stiff polymer, and surfactant selected to provide various advantageous properties. The foam is useful in personal care absorbent articles, medical absorbent articles, absorbent wiping articles, and a variety of other applications.
We claim: 1. An open-cell, absorbent thermoplastic foam, including at least 75% by weight of a foam formula mixture which comprises: A) about 5 to about 70 parts by weight of a thermoplastic styrene block copolymer elastomer; B) about 5 to about 70 parts by weight of an ethylene ionomer; C) about 15 to about 60 parts by weight of a stiff polymer selected from the group consisting of polystyrene, high impact polystyrene, and combinations thereof; and D) about 0.5 to about 5 parts by weight of a surfactant selected from the group consisting of ethoxylated...