Low-emission formaldehyde donor preparations and use thereof
AssigneeAir Liquide Sante (International)
InventorsWolfgang Beilfuss, Ralf Gradtke, Ingo Krull, Klaus Weber
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Abstract
A preservative and a process for the preparation of a preservative with reduced formaldehyde emission which comprises: a) at least one formal; and b) at least one emission-reducing additive which is selected from urea, urea derivatives, amino acids, guanidine and guanidine derivatives, and wherein the preservative: (i) comprises no iodopropynyl compound; and (ii) no derivative of 1H-benzimidazol-2-carbamic acid.
Claims23
A preservative with reduced formaldehyde emissions which comprises:
- a) about 90% to about 99% weight of N,N′-methylenebis(5-methyloxazolidine);
- and
- b) about 1% to about 10% weight of urea,
- wherein the preservative
- (i) comprises no iodopropynyl compound, and
- (ii) comprises no derivative of 1H-benzimidazol-2-carbamic acid.
A preservative with reduced formaldehyde emissions which comprises:
- a) about 90% to about 99% weight of N,N′-methylenebis(5-methyloxazolidine);
- and
- b) about 1% to about 10% weight of urea,
- wherein the preservative
- (i) comprises no iodopropynyl compound, and
- (ii) comprises no derivative of 1H-benzimidazol-2-carbamic acid, and
- wherein said weight of said water is up to about 1% of the preservative.
A preservative with reduced formaldehyde emissions which comprises:
- a) about 90% to about 99% weight of N,N′-methylenebis(5-methyloxazolidine);
- and
- b) about 1% to about 10% weight of urea,
- wherein the preservative
- (i) comprises no iodopropynyl compound, and
- (ii) comprises no derivative of 1H-benzimidazol-2-carbamic acid, and
- (iii) comprises no hydrolyzable polymeric resins.
Dependencies are inferred from the claim text.