Synthesis of imide siloxane prepolymers using blocked isocyanates
✍ Scribed by Bernhard Stapp; Ursula Endres; Gabriele Mösges; Kurt Geibel
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 237 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0032-3861
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The synthesis of polyamide-imide (PAI) can be performed by the reaction of p-chlorophenol-(PCP) blocked 4,4 -diphenyl methane diisocyanates (BMDI) with trimellitic anhydride (TMA) using a two-stage heating. At 80ЊC the polyimide oligomers were first formed and the high molecular weight PAI can not b
N-Methylaniline-, diphenylamine-, and N-phenylnaphthylamine-blocked toluene diisocyanates (TDI) were prepared and characterized by IR, NMR spectroscopy, and nitrogen content analyses. The structure-property relationship of these adducts was established by reacting with hydroxyl-terminated polybutadi