| 摘要 |
Polyamides are made by condensing one or more polyamines with a copolymerization product of styrene or vinyl toluene with dehydrated castor oil acids. Specified polyamines are diethylene triamine, ethylene diamine, propylene diamine, hexamethylene diamine, p-phenylene diamine and p,p1-diaminodiphenyl methane. The styrene or vinyl toluene may be copolymerized with the acid in the presence of a free radical forming polymerization catalyst, e.g. an organic peroxide, and a non-metallic reducing polymerization inhibitor, e.g. an alkyl mercaptan containing 6 to 12 carbon atoms. In examples (1) to (7) and (9) dehydrated castor oil acids are polymerized with styrene in the presence of lauryl mercaptan and di-tertiary butyl peroxide, the product being condensed with (1), (2), (7) and (9) diethylene triamine, (3) and (5) ethylene diamine, (4) p,p1-diamino diphenyl methane, and (6) a mixture of diethylene triamine and ethylene diamine, whilst in Example (8) vinyl toluene and dehydrated castor oil acids are copolymerized in the presence of lauryl mercaptan and di-tertiary butyl peroxide, the produce being condensed with ethylene diamine. The products are soluble in mixed solvents, e.g. xylene/butanol, and have filmforming properties.
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