| 摘要 |
<p>Polyamides and process for their preparation comprising either: A) epoxidizing an unsaturated or partially hydrogenated fatty acid glyceride; B) transesterifying the epoxidized glyceride with a C1-4 alkanol to obtain epoxidized fatty acid C1-4 alkyl esters; C) ring opening and dimerizing the epoxidized fatty acid C1-4 alkyl esters; and D) reacting the dimerized fatty acid C1-4 alkyl esters with a polyamine to obtain a polyamide; or: A) transesterifying an unsaturated or partially hydrogenated glyceride with a C1-4 alkanol to obtain olefinically unsaturated fatty acid C1-4 alkyl esters; B) epoxidizing the unsaturated fatty acid C1-4 alkyl esters; C) ring opening and dimerizing the epoxidized fatty acid C1-4 alkyl esters; and D) reacting the dimerized fatty acid C1-4 alkyl esters with a polyamine to obtain a polyamide.</p> |
