| 摘要 |
Reactive liquid polyamides are provided which are derived from polybasic acids and amine residues obtained as by-products from the process for the hydrogenation of adiponitrile to hexamethylenediamine. In one embodiment, the liquid reactive polyamide composition is one having an amine value less than 200 and 100.degree.C. viscosity in the range of 1 - 80 poise. Such polyamide comprises the reaction product of: (a) an amine residue obtained from the process for the hydrogenation of adiponitrile to hexamethylenediamine and containing 60 to 90 weight percent 1,2-diamino-cyclohexane, 4 to 20 weight percent 2-methylpentamethylenediamine, 4 to 10 weight percent 2-(aminomethyl)cyclopentylamine and up to 7 weight percent other nitrogen-containing by-products; (b) a polybasic acid which i8 a branched or straight-chain, aliphatic or cycloaliphatic acid having 18 to 72 carbon atoms and 2 to 4 carboxyl groups; and optionally (c) up to 30 equivalent percent of a branched or unbranched, aliphatic or cycloaliphatic mono- or dicarboxylic acid containing 2 to 28 carbon atoms; or (d) up to 30 equivalent percent of a mono- or polyfunctional aliphatic, aromatic or heterocyclic amlne contalnlng 2 to 20 carbon atoms; or (e) up to 30 equivalent percent of a branched or unbranched, aliphatic or cycloallphatic monoor dicarboxylic acid containing 2 to 28 carbon atoms; and up to 30 equivalent percent of a mono- or polyfunctional aliphatic, aromatic or heterocyclic amine containing 2 to 20 carbon atoms. By the use of these amine residues, it is possible to obtain liquid polyamide products having low amine values and manageable viscosities. The liquid reactive polyamides are useful for a variety of applicat-lons; for example, they can be blended with thermoplastic polyamide resins to impart desirable properties thereto. |
