Long-lasting antimicrobial reaction product of allantoin and...

Details Long-lasting antimicrobial reaction product of allantoin and... Long-lasting antimicrobial reaction product of allantoin and...

2006-08-08

2006-08-08

Saeed, Kamal A. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07087762

ABSTRACT:
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 organismB. cepacia, and in combination products with parabens and iodopropynyl butyl carbamate (IPBC).

REFERENCES:
patent: 3248285 (1966-04-01), Berke

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