| 摘要 |
<p>25328 COPOLYAMIDE OF BRANCHED C10 DIAMINE, BIS(4-AMINOCYCLOHEXYL)- ALKANE, ISPHTHALIC ACID AND TEREPHTHALIC ACID A normally solid, transparent, amorphous polyamide having: first diamine-derived primary structural units of the formula wherein each A is individually selected from the group consisting of 5-methyl-nonamethylene, 2,4-dimethyloctamethylene, 2,4,6-trimethylheptamethylene and 4-isopropylheptamethylene; second diamine-derived primary structural units of the formula wherein each R is individually selected from the group consisting of hydrogen and methyl; first diacid-derived primary structural units of the formula ; and second diacid-derived primary structural units of the formula ; and process of preparation thereof. Other diamine-derived structural units and/or diacid-derived structural units can be present in small amounts.</p> |
