Reaction products from heating of α-terpinene and I-limonene with 2-hydroxymethylphenol or 2-hydroxymethyl-4, 6-dimethylphenol have been investigated and it was confirmed that the products are coumarone compounds.
Polyamides have been obtained up to the preceeding report by polymerization condensation of dimethyl isocinchomeronate and hexamethylenediamine. This report deals with the formation of polyamides having various copolymer components by adding dimethyl adipate as a copolymer component. The reaction can be carried out in ethanol as well as in methanol. The polymer has spinning quality. The coloration of product was lighter with the use of increasing amount of dimethyl adipate. Although the relation between the melting point and the copolymer components was not clear, a minimum melting point was found and the formation of isomorphic crystals was difficult than anticipated. The fiber prepared by fusion, spinning and elongation showed a sufficient mechanical strength when over 30% of dimethyl adipate was used. The Young coefficient was decreased with an increased using of dimethyl adipate but the product showed high Young coefficient even when 50% of dimethyl adepate was used and the valuable product to answer the object of this experiment was obtained.