Composition and use of hydrogenated alkyl ketene dimers
View Patent ↗Latent dispersants were made by the hydrogenation of an alkyl ketene dimer, alkenyl ketene dimer, or ketene multimer. Adding the latent dispersant to paper or paperboard increased its resistance to water and water vapor while maintaining recyclability and repulpability. Additionally, provided is a method for increasing the repulpability of a wax coated paper or paperboard. Dispersants made by the hydrolysis of the alkyl ketene dimer, alkenyl ketene dimer, and ketene multimer are also described.
1. A composition comprising Formula I:
wherein
R is a branched or straight chain alkyl that is at least 6-carbon atoms in length; R 1 is a branched or straight chain alkyl containing from 2 to 34 carbon atoms; R 2 is a branched or straight chain alkyl that is at least 6-carbon atoms in length;
wherein
R, R 1 and R 2 may independently, optionally contain a cyclic functional group; and n is an integer from 1 to 6; and wherein Formula I is the result of the hydrogenation or partial hydrogenation of an alkyl ketene dimer, alkenyl ketene dimer, or ketene multimer.
2. The composition according to claim 1 , wherein n is an integer from 0 to 3.
3. The composition according to claim 2 , wherein n is 0.
4. The composition according to claim 1 , wherein R and R 2 are from about 10 to about 22 carbons in length.
5. The composition according to claim 4 , wherein R and R 2 is from about 10 to about 20 carbons in length.
6. The composition according to claim 5 , wherein R and R 2 is from about 12 to about 18 carbons in length.
7. The composition according to claim 1 , wherein the composition further comprises at least one additional wax.
8. The composition according to claim 7 , wherein the at least one additional wax has a melting point of from about 30° C. to about 200° C.
9. The composition of claim 8 , wherein the at least one additional wax has a melting point of from about 40° C. to about 85° C.
10. The composition according to claim 7 , wherein the at least one additional wax is a paraffin wax or microcrystalline wax.
11. The composition of claim 1 , wherein the composition optionally comprises a thermoplastic polymeric material, hydrocarbon resins, polyethylene acetate, polyethylene, or any combination thereof.