|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||260/296 ; N ; 260/296 ; TA ; 260/334 ; R ; 260/296 ; HN|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 21 인용 특허 : 0|
Water swellable absorbent articles, made from polyelectrolytes, containing free carboxylic groups, together with methods for their preparation, and a composition useful to make said articles are disclosed. The composition contains bis-oxazolines or bis imino oxazolidines. The articles are crosslinked by heating and/or removing substantially all of the water from the precursor composition. The absorbent articles are useful as surgical sponges, diapers, tampons, meat trays, bath mats and the like.
A solution useful to form water swellable articles of a carboxylic synthetic polyelectrolyte which comprises 1. a solvent consisting of water, or a mixture thereof with lower alcohols, 2. about 5 to about 60% by weight based on the amount of solvent of a carboxylic polyelectrolyte or mixtures thereof having free carboxylic acid groups, and 3. 0.05 to 5.0% by weight based on the polyelectrolyte of a bis-oxazoline or bis-imino-oxazolidino crosslinking agent reactive with carboxylic acid groups.