Process for making aminoalcohol compounds

A compound, amino alcohol technology, applied in the field of manufacturing amino alcohol compounds, can solve problems such as by-products affecting the color and odor of target materials
CN102803201AInactive Publication Date: 2012-11-28ANGUS CHEM CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANGUS CHEM CO
Publication Date
2012-11-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

Provided is a process for making an aminoalcohol compound. The process comprises using an excess amount of aliphatic aldehyde in a condensation step between the aldehyde and a nitroalkane, and using an aldehyde scavenger in a reductive hydrogenation step. The process yields aminoalcohol compounds exhibiting reduced color and odor.
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Description

field of invention

[0001] The present invention relates to a process for the manufacture of aminoalcohol compounds. The methods provide aminoalcohol compounds that exhibit reduced color and odor. Background of the invention

[0002] Amino alcohol compounds play an important role in a variety of commercial and consumer products. For example, they can be used as neutralizing agents in paints and coatings or in personal care products.

[0003] On a commercial scale, aminoalcohol compounds are usually prepared by a two-step process. The first step is the condensation of a nitroalkane compound with an aliphatic aldehyde such as formaldehyde to form a nitroalcohol compound. The second step is the reductive hydrogenation of nitroalcohols to aminoalcohol compounds.

[0004] The known commercial methods have many disadvantages, the main disadvantage being the formation of unwanted by-products which affect the color and odor of the target material. Therefore, it would be an advan...

Claims

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