Low-emission formaldehyde donor preparations and use thereof

1. 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.

2. The preservative according to claim 1 , further comprising an O-formal.

3. The preservative according to claim 2 , wherein said O-formal is selected from the group consisting of:

a) ethylenedioxy dimethanol;

b) benzyl alcohol hemiformal;

c) propylene glycol hemiformal; and

d) butyl diglycol hemiformal.

4. The preservative according to claim 1 , further comprising a formal selected from the group consisting of:

a) N,N′,N″-tris(hydroxyethyl)hexahydrotriazine; and

b) N,N′,N″-tris(β-hydroxypropyl)hexahydrotriazine.

5. The preservative according to claim 1 , further comprises at least one component selected from the group consisting of:

a) glycoluril;

b) dimethylhydantoin;

c) imidazolidinylurea;

d) diazolidinylurea;

e) amino acids;

f) guanidine; and

g) guanidine derivatives.

6. The preservative according to claim 1 , further comprises at least one component selected from the group consisting of:

a) glycoluril;

b) tetramethylolglycoluril;

c) dimethylhydantoin;

d) dimethyloldimethylhydantoin;

e) dimethylolurea;

f) tetramethanolurea;

g) imidazolidinylurea; and

h) diazolidinylurea.

7. The preservative according to claim 1 , wherein said preservative further comprises:

e) at least one additional additive.

8. The preservative according to claim 7 , wherein said additional additive comprises at least one component selected from the group consisting of:

a) solvents;

b) solubility promoters;

c) corrosion inhibitors;

d) alkalinizing agents;

e) dyes, perfumes;

f) viscosity modifying agents;

g) foam inhibitors;

h) emulsifiers; and

i) antioxidants.

9. The preservative according to claim 1 , wherein said preservative further comprises water.

10. The preservative according to claim 9 , wherein the weight of said water is up to about 10% of the preservative.

11. The preservative according to claim 10 , wherein said weight of said water is up to about 5% of the preservative.

12. The preservative according to claim 11 , wherein said weight of said water is up to about 1% of the preservative.

13. The preservative according to to claim 1 , wherein said preservative is anhydrous.

14. The preservative according to claim 1 , wherein said preservative comprises:

a) about 92% to about 98% weight of N,N′-methylenebis(5-methyloxazolidine); and

b) about 2% to about 8% weight of urea.

15. The preservative according to claim 14 , wherein said preservative comprises:

a) about 93% to about 97% weight of N,N′-methylenebis(5-methyloxazolidine); and

b) about 3% to about 7% weight of urea.

16. The preservative according to claim 15 , wherein said preservative comprises:

a) about 95% weight of N,N′-methylenebis(5-methyloxazolidine); and

b) about 5% weight of urea.

17. The preservative according to claim 1 , wherein said preservative comprises:

a) about 90% weight, of N,N′-methylenebis(5-methyloxazolidine);

b) about 5% weight of urea; and

c) about 5% weight of phenoxyethanol.

18. The preservative according to claim 1 , wherein said preservative is utilized for a technical product.

19. The preservative according to claim 18 , wherein said product is selected from the group consisting of:

a) cutting fluid;

b) propellant;

c) surface coating;

d) a dispersion; and

e) a water-based paint.

20. The preservative according to claim 15 , wherein said preservative comprises:

a) about 96% weight of N,N′-methylenebis(5-methyloxazolidine); and

b) about 4% weight of urea.

21. 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.

22. The preservative according to claim 21 , wherein the preservative comprises about 1% to about 5% weight of urea.

23. 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.