发明名称 |
METHOD OF PREPARING HIGH MOLECULAR WEIGHT RANDOM POLYHYDROXYPOLYAMIDES |
摘要 |
High molecular weight random polyhydroxypolyamides (PHPAs) are produced by creating prepolymers which are further polymerized. Random prepolymers are formed from a stoichiometrically molar balanced (1:1) starting material. The starting material is a 1:1 stoichiometrically balanced esterified aldaric acid: alkylene or alkylene derived diammonium salt. Alternatively, the starting material is an esterified stoichiometrically balanced diacid: diamine salt and a N'-ammoniumalkyl (or alkyl derived)-D-aldaramic acid terminal carboxylate zwitterionic salt mixture. The starting materials are polymerized in a basic alcohol using a second amine. The polymerized material, or the random prepolymers, are isolated and then further polymerized in a solvent, typically a mixed solvent of an alcohol and non-alcohol, to obtain the high molecular weight PHPAs.
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申请公布号 |
CA2507146(C) |
申请公布日期 |
2012.03.13 |
申请号 |
CA20032507146 |
申请日期 |
2003.12.10 |
申请人 |
THE UNIVERSITY OF MONTANA |
发明人 |
KIELY, DONALD E.;KRAMER, KYLIE;ZHANG, JINSONG |
分类号 |
C08G69/28;C08G63/685;C08G69/26 |
主分类号 |
C08G69/28 |
代理机构 |
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