A diamine compound represented by general formula (I).
wherein R is a C₁-C₁₂ alkylene group which is unsubstituted or substituted, a group of formula (II)
where R¹ and R², which are the same or different, each represents a hydrogen atom, a lower alkyl group, a halogen atom, a nitrile group, a nitro group, an alkoxy group or a hydroxyl group, or a group of formula (III)
where R¹ and R² have the same meanings as defined above, and Z is a simple chemical bond, -O-, >C=O, -CH₂-, -S-, -SO-, or -SO₂-. The diamine compound is produced by reducing a dinitro compound of general formula (IV)
wherein R has the same meaning as defined above. Imidation of the diamine compound with a tetracarboxylic acid dianhydride produces a polyamideimide resin having a repeating unit represented by general formula (V) :
wherein Ar and Ar¹, which are the same or different, each represents a tetravalent aromatic residue to which two pairs of carbonyl groups are attached directly at four carbon atoms thereof, respectively, the two carbonyl groups in each one of the two pairs of carbonyl groups being attached to neighboring carbon atoms; R³ is a group of general formula (VI) below:
where R has the same meaning as defined above; R⁴ is a divalent organic residue selected from aliphatic, aromatic and alicyclic groups other than those represented by R³; and m and n are each zero or a positive integer which satisfy m ≧ 2n.
通式 (I) 所代表的二胺化合物。
其中 R 是未取代或取代的 C₁-C₁₂亚烷基、式 (II) 的基团
其中 R¹ 和 R² 相同或不同,各自代表一个氢原子、一个低级烷基、一个卤素原子、一个腈基、一个硝基、一个烷氧基或一个羟基,或一个式 (III) 基团
其中 R¹ 和 R² 的含义与上述定义相同,Z 为简单
化学键、-O-、>C=O、-CH₂-、-S-、-SO- 或 -SO₂-。二胺化合物是通过还原通式 (IV) 的二
硝基化合物制得的
其中 R 的含义与上述定义相同。用四
羧酸二酐对二胺化合物进行
酰亚胺化,可生成具有通式 (V) 所代表重复单元的聚酰胺
酰亚胺树脂:
其中 Ar 和 Ar¹相同或不同,各自代表四价芳香族残基,其中两对羰基分别直接连接在其四个碳原子上,两对羰基中的每一个中的两个羰基连接在相邻的碳原子上;R³是下式通式(VI)的基团:
其中 R 的含义与上文定义相同;R⁴ 是二价有机残基,选自 R³ 所代表基团以外的脂肪族、芳香族和脂环族基团;m 和 n 均为零或满足 m ≧ 2n 的正整数。