Formaldehyde scavenging in microbiocidal articles
AssigneeThe Regents of the University of California
InventorGang Sun
Life of this patent
Estimating the term…
Abstract
Improved methods for durable and regenerable antimicrobial finishing of fabrics are disclosed. In certain embodiments, the methods reduce the amount of free-formaldehyde released during processing by using a formaldehyde scavenger such as a polyol. The improved process imparts regenerable antimicrobial functions to cellulose articles including textiles, papers, wood pulp, and any cellulose-containing materials. The treated product acquire antimicrobial properties after being treated with a halogenated solution.
Claims33
A process for preparing a microbiocidal article with a reduction in free-formaldehyde release, said process comprising:
- (a) immersing said article in an aqueous treating solution which comprises a heterocyclic amine and a polyol;
- and
- (b) treating said article with a halogenated solution to produce a heterocyclic N-halamine, thereby rendering said article microbiocidal with a reduction in free-formaldehyde release.
A process for preparing a microbiocidal article with a reduction in free-formaldehyde release, said process comprising:
- (a) immersing said article in an aqueous treating solution which comprises an alkylated hydantoin derivative;
- and
- (b) treating said article with a halogenated solution to produce an N-halo-hydantion derivative, thereby rendering said article microbiocidal with a reduction in free-formaldehyde release.
Dependencies are inferred from the claim text.