Processes for preparing microbiocidal textiles
AssigneeThe Regents of the University of California
InventorsGang Sun, Xiangjing Xu
Life of this patent
Estimating the term…
Abstract
The present invention provides durable and regenerable microbiocidal textiles and methods for preparing same. Such textiles can be readily prepared using a wet finishing process to covalently attach a hetercyclic N-halamine to a cellulose based material or other polymeric material. Once prepared, the textiles of the present invention have a broad spectrum of biocidal activity against pathogenic microorganisms. Moreover, the biocidal activity of such textiles can be regenerated by washing with a halogenated solution.
Claims16
A process for preparing a microbiocidal cellulosic textile, said process comprising:
- (a) immersing a cellulosic textile in an aqueous treating solution which comprises a catalyst, a wetting agent and a heterocyclic amine;
- (b) removing the excess treating solution from said cellulosic textile;
- (c) drying said cellulosic textile;
- (d) curing said dried cellulosic textile;
- (e) washing said cured cellulosic textile to remove excess reagents;
- (f) drying said cellulosic textile to remove water;
- and
- (g) treating said cellulosic textile with a halogenated aqueous solution to produce a heterocyclic N-halamine, thereby preparing a microbiocidal cellulosic textile.
A process for preparing a microbiocidal cellulosic or other polymeric material textile having a reactive functional group, said process comprising:
- (a) immersing a cellulosic or other polymeric material textile in an aqueous treating solution which comprises a catalyst, a wetting agent and a heterocyclic amine;
- (b) removing the excess treating solution from said cellulosic or other polymeric material textile;
- (c) drying said cellulosic or other polymeric material textile;
- (d) curing said dried cellulosic or other polymeric material textile;
- (e) washing said cured cellulosic or other polymeric material textile to remove excess reagents;
- (f) drying said washed cellulosic or other polymeric material textile to remove water;
- and
- (g) treating said cellulosic or other polymeric material textile with a halogenated aqueous solution to produce a heterocyclic N-halamine, thereby preparing a microbiocidal cellulosic or other polymeric material textile.
A process for preparing a microbiocidal cellulosic article, wherein said article is a member selected from the group consisting of a surgeon's gown, a cap, a mask, a surgical cover, a patient drape, a carpeting, a bedding material, an underwear, a sock and a uniform, said process comprising:
- (a) immersing a cellulosic article in an aqueous treating solution which comprises a catalyst, a wetting agent and a heterocyclic amine;
- (b) removing the excess treating solution from said cellulosic article;
- (c) drying said cellulosic article;
- (d) curing said dried cellulosic article;
- (e) washing said cured cellulosic article to remove excess reagents;
- (f) drying said cellulosic article to remove water;
- and
- (g) treating said cellulosic article with a halogenated aqueous solution to produce a heterocyclic N-halamine, thereby preparing a microbiocidal cellulosic article.
A process for preparing a microbiocidal cellulosic or polymeric article having a reactive functional group, wherein said article is a member selected from the group consisting of a surgeon's gown, a cap, a mask, a surgical cover, a patient drape, a carpeting, a bedding material, an underwear, a sock and a uniform, said process comprising:
- (a) immersing a cellulosic or polymeric article in an aqueous treating solution which comprises a catalyst, a wetting agent and a heterocyclic amine;
- (b) removing the excess treating solution from said cellulosic or polymeric article;
- (c) drying said cellulosic or polymeric article;
- (d) curing said dried cellulosic or polymeric article;
- (e) washing said cured cellulosic or polymeric article to remove excess reagents;
- (f) drying said washed cellulosic or polymeric article to remove water;
- and
- (g) treating said cellulosic or polymeric article with a halogenated aqueous solution to produce a heterocyclic N-halamine, thereby preparing a microbiocidal cellulosic or polymeric article.
Dependencies are inferred from the claim text.