Preparation of polyurethane elastomers and means of spinning fibres based on them
✍ Scribed by A. S. Chegolya; B. V. Radushkevich
- Publisher
- Springer US
- Year
- 1981
- Tongue
- English
- Weight
- 493 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0015-0541
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The physical and thermal properties of hand-cast polyurethane and polyurethane/polyurea elastomers prepared from prepolymers of 20 and 97% trans,trans-4,4-diisocyanatodicyclohexyl methane ( t,t-rMDI) and C 3 -and C 4 -polyethers chain extended with either 1,4-butanediol (XB) or a commercial mixture
## Abstract The phase‐separation behavior and morphology of polycarbonate‐based polyurethanes were investigated as a function of the soft‐segment molecular weight and chemical structure and the 4,4′‐diphenylmethane diisocyanate/1,4‐butanediol based hard‐segment contents. Polarized optical microscop