The influence of the structure of aromatic diisocyanates on the preparation and the properties of polyurethanes
✍ Scribed by Alla Barbǎlatǎ; A.A. Caraculacu; V. Iurea
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 309 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0014-3057
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A series of aromatic polyesterimides with ester bonds in the side-chains has been obtained by the partial esterification of a polyamic acid prepared from pyromellitic dianhydride and 4,4'-diaminodiphenyl ether with the following aromatic diols: Influence of the structure of the diol on the thermal,
The synthesis of thermoplastic polyurethane elastomers (TPUs) is generally carried out using the prepolymer method. To study the influence that the properties of the prepolymer may have in the final TPUs, four TPUs were prepared by using different NCO/OH ratios. The prepolymers and the macroglycol u