Methylol loss, function

Dimethylol-5,5-dimethylhydantoin (DMDMH) and 3-methylol-2,2,5,5-tetramethylimidazolidinone (MTMIO) were mixed in different ratios in textile finishing systems for cellulose fabrics. The mixtures of 2,2,5,5-tetrame thylimidazolidinone (TMIO) and hydantoin rings on the grafted cellulose provided a combination of imide, amide and amine halamine stmctuies in different ratios after chlorination. These combinations improved both the power and stability of the biocidal properties of the treated cotton and polyester/cotton blend fabrics studied. Repeated laundering tests showed that even a small amount of added amine halamines could substantially reduce the loss of active chlorine and increase the power of the biocidal functions on the fabrics. The results were discussed. 12 refs. 

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