Accelerator composition for elastomers
View Patent ↗The invention relates to an accelerator agent of a novel blend of aldehyde-amine condensation product and aliphatic amines for diaminic, metal oxide, sulfur, and triazine crosslinkable elastomers.
1. A crosslinking accelerating agent for crosslinkable elastomers, the agent comprising: (a) a mixture of high molecular weight fatty amines, and (b) an aldehyde-amine condensation product, at a weight ratio (a):(b) of about 1:10 to about 10:1, wherein the mixture of high molecular weight fatty amines is selected from the group consisting of bis (hydrogenated tallow alkyl) amine, dicocoalklyamine, 1-octadecanamine, and N-octadecylamine.
2. The agent of claim 1 , wherein the weight ratio of the mixture of high molecular weight fatty amines to the aldehyde-amine condensation product is about 6:1.
3. The agent of claim 1 , wherein the a mixture of high molecular weight fatty amines is bis(hydrogenated tallow alkyl) amine.
4. The agent of claim 1 , wherein the aldehyde-amine condensation product is chosen from the group consisting of 3,5-diethyl-1,2-dihyrdro-1-phenyl-2-propylpyridine (“PDHP”), a condensation product of butyraldehyde and aniline, and a condensation product of butryaldehyde and butylamine.
5. The agent of claim 4 , wherein the aldehyde-amine condensation product is PDHP.
6. The agent of claim 1 , wherein the a mixture of high molecular weight fatty amines is bis(hydrogenated tallow alkyl) amine and the aldehyde-amine condensation product is PDHP.
7. The agent of claim 6 , wherein the weight ratio the mixture of high molecular weight fatty amines to aldehyde-amine condensation product is about 6:1.
8. A method of making an elastomer product, comprising the steps of reacting: A crosslinkable elastomer and a crosslinking agent present at 1-10 phr, the crosslinking agent comprising (a) a mixture of high molecular weight fatty amines and (b) an aldehyde-amine condensation product at a weight ratio of 1:10 to 10:1, wherein the mixture of high molecular weight fatty amines is selected from the group consisting of bis(hydrogenated tallow alkyl) amine, dicocoalklyamine, 1-octadecanamine, and N-octadecylamine.
9. The method of claim 6 , wherein the mixture of high molecular weight fatty amines is bis(hydrogenated tallow alkyl) amine.
10. The method of claim 8 , wherein the aldehyde-amine condensation product is chosen from the group consisting of 3,5-diethyl-1,2-dihyrdro-1-phenyl-2-propylpyridine (“PDHP”), a condensation product of butyraldehyde and aniline, and a condensation product of butryaldehyde and butylamine.
11. The method of claim 10 , wherein the aldehyde-amine condensation product is PDHP.
12. The method of claim 8 , wherein the mixture of high molecular weight fatty amines is bis(hydrogenated tallow alkyl) amine and the aldehyde-amine condensation product is PDHP.
13. The method of claim 12 , wherein the weight ratio of the mixture of high molecular weight fatty amines to aldehyde-amine condensation product is about 6:1.