Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1990-03-05
1991-08-06
Hollrah, Glennon H.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
514392, 514512, 514544, 514693, 514696, 514738, A61K 31415, A61K 31265, A61K 31235, A61K 31115
Patent
active
050378430
ABSTRACT:
A method of preparing an antimicrobial preservative system in a substantially anhydrous liquid form is disclosed. The antimicrobial preservative system inhibits or retards microbial growth when an effective antimicrobial amount is subsequently added to a medium capable of supporting undesirable microbial growth. More particularly, the preservative system comprises a condensation product of a 5,5-disubstituted hydantoin and formaldehyde prepared in the presence of a substantially anhydrous, water-miscible, solvent and an alkalizing agent. Also disclosed is a cold-stable, substantially anhydrous liquid preservative system comprising 1,3-dimethylol-5,5-dimethylhydantoin alone or in combination with an effective antimicrobial amount of at least one paraben preservative prepared by an embodiment of the disclosed method.
REFERENCES:
patent: 2155863 (1939-04-01), Jacobson
patent: 2532278 (1950-12-01), Chadwick
patent: 2955057 (1960-10-01), Gagliardi et al.
patent: 3987184 (1976-10-01), Foelsch
patent: 4172140 (1979-10-01), Shull et al.
patent: 4345936 (1982-08-01), Thibault et al.
patent: 4454133 (1984-06-01), Berke et al.
patent: 4581351 (1986-04-01), Berke et al.
Chem. Abstracts, 65:723b (1966).
Glydant Product Bulletin, Glyco Chemicals, Inc. (9/78).
Glyco Product Bulletin, G-41, Glyco Chemicals, Inc. (1/74).
Product Guide, McIntyre Group Ltd., p. 16 (2/89).
Germaben II Product Bulletin, Sutton Laboratories, Inc. (undated).
Parabens Product Bulletin, Napp Chemicals (undated).
Markland, W. R., "Paraben Combinations with Other Preservatives", Norda Briefs, No. 485, Norda Inc. (1978).
Parker, Malcolm S., "Preservatives in Combination", Soap, Perf., Cosmet., 223-224 (Apr., 1973).
Schanno et al., "Evaluation of 1,3-dimethylol-5,5-dimethyl Hydantoin as a Cosmetic Preservative", J. Soc. Cosmet. Chem., 31, 85-96 (1980).
Jacobs et al., "The Influence of pH, Emulsifier, and Accelerated Ageing upon Preservative Requirements of O/W Emulsions", J. Soc. Cosmet. Chem., 26, 105-117 (1975).
CTFA Cosmetic Ingredient Dictionary, Third Edition, Supplement p. 22, The Cosmetic, Toiletry and Fragrance Assocation, Inc. (1985).
Hollinden Gary
Hollrah Glennon H.
The McIntyre Group, Ltd.
LandOfFree
Antimicrobial preservative system and method comprising a formal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Antimicrobial preservative system and method comprising a formal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antimicrobial preservative system and method comprising a formal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1987356