Antimicrobial treatment of textile materials
AssigneeZeneca Limited
InventorJohn David Payne
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Abstract
Antimicrobial treatment of textile material with an oligomeric or polymeric biguanide and a strong organic acid having a pK value below 4.5. Acid protects treated material against yellowing the presence of chlorine bleaches and loss of antimicrobial activity on laundering. The preferred biguanide is poly(hexamethylene biguanide) hydrochloride.
Claims12
A method of treating a textile material to inhibit microbial growth which comprises applying to the textile material a) an oligo- or polymeric biguanide or salt thereof with an inorganic acid or an organic acid having a pK value above 4.5 followed by b) a strong organic acid having a pK value below 4.5 and free from any aliphatic or oxyalkylene chain containing 12 or more carbon atoms.
A textile material treated with a) an oligo- or polymeric biguanide or salt thereof with an inorganic acid or an organic acid having a pK value above 4.5 followed by b) a strong organic acid having a pK value below 4.5 and free from any aliphatic or oxyalkylene chain containing 12 or more carbon atoms.
Dependencies are inferred from the claim text.