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Long-lasting antimicrobial reaction product of allantoin and formaldehyde containing a low level of free formaldehyde
Long-lasting antimicrobial reaction product of allantoin and formaldehyde containing a low level of free formaldehyde
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机译:尿囊素与甲醛的持久抗菌反应产物,其游离甲醛含量低
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摘要
This invention relates to a reaction product of allantoin and formaldehyde made in a molar ratio of about 1:2.75-1:3.25, preferably 1:3, respectively, preferably under controlled pH (5.0 to 7.0) and temperature (40° to 85° C., preferably 50-60° C.) conditions, which product contains free formaldehyde (0.1%), and methylene diol of about 580-1385 ppm, preferably at a pH of 7.2, with advantageous long-lasting, anti-microbial properties, particularly against the organism B. cepacia, and in combination products with parabens and iodopropynyl butyl carbamate (IPBC).
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