Co-production of cyclohexylamine and bis(para-aminocyclohexyl) methane
AssigneeHuntsman Petrochemical Corporation
InventorsWei-Yang Su, Ralph DiGuilio, Pete Morford
Life of this patent
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Abstract
Embodiments of the present invention disclose a process for the co-production of bis(para-aminocyclohexyl) methane (PACM). Also disclosed are articles of manufacture made using PACM produced by methods of this invention. The methods of the present invention generally include a first mixture having methylene di-aniline (MDA) and a second aromatic amine. The first mixture has less than 15% polymeric MDA by weight and the second aromatic amine is present in an amount to render the first mixture a liquid. The first mixture is hydrogenated to produce a product mixture comprising PACM and at least one second non-aromatic amine.
Claims26
1) A process for the co-production of bis(para-aminocyclohexyl) methane which comprises the steps of:
- providing a first mixture having methylene di-aniline and at least one second aromatic amine,
- wherein the at least one second aromatic amine is present in an amount to render the first mixture a liquid, and
- wherein the first mixture has less than 15% polymeric methylene di-aniline by weight based on the total weight of the first mixture;
- and
- hydrogenating the first mixture to produce a product mixture comprising bis(para-aminocyclohexyl) methane and at least one second non-aromatic amine.
24) A process for the co-production of bis(para-aminocyclohexyl) methane which comprises the steps of:
- providing a first mixture having methylene di-aniline and aniline, wherein the first mixture has less than about 5% polymeric methylene di-aniline by weight based on the total weight of the first mixture and wherein the aniline is present in an amount to render the first mixture a liquid;
- hydrogenating the first mixture to produce a product mixture comprising bis(para-aminocyclohexyl) methane and a second non-aromatic amine;
- and
- separating the product mixture to recover bis(para-aminocyclohexyl) methane from the product mixture.
25) An article of manufacture produced using bis(para-aminocyclohexyl) methane produced by:
- providing a first mixture having methylene di-aniline and at least one second aromatic amine,
- wherein the at least one second aromatic amine is present in an amount to render the first mixture a liquid, and
- wherein the first mixture has less than 15% polymeric methylene di-aniline by weight based on the total weight of the first mixture;
- and
- hydrogenating the first mixture to produce a product mixture comprising bis(para-aminocyclohexyl) methane and at least one second non-aromatic amine.
Dependencies are inferred from the claim text.