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US 6,472,553 B1Granted
Synthesis of new polynitriles from cycloalphatic vicinal primary diamines
AssigneeAir Products and Chemicals, Inc.
InventorJuan Jesus Burdeniuc
Life of this patent
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Abstract
Compounds of the structure: wherein R1 is H, a C1 to C4 alkyl, or a substituted C1 to C4 alkyl; R2 is H or a cyanoethyl; n is an integer of 1 to 4, and y is 1 or 2, and a method for making the compounds. The compounds are made by reacting acrylonitrile with one or more cycloaliphatic vicinal diamines in the presence of water and a catalytic amount of an acid catalyst having a pKa of −3.0 to 7.5.
Claims8
A method for making compounds of the structure:
- wherein R1 is H, a C1 to C4 alkyl, or a substituted C1 to C4 alkyl;
- R2 is H or a cyanoethyl;
- n is an integer of 1 to 4, and y is 1 or 2, comprising reacting acrylonitrile with one or more cycloaliphatic vicinal diamines in the presence of water and a catalytic amount of an acid catalyst having a pKa of −3.0 to 7.5.
Dependencies are inferred from the claim text.