Preparation and properties of imide–pyrrone copolymers
✍ Scribed by Vernon L. Bell
- Publisher
- John Wiley and Sons
- Year
- 1970
- Tongue
- English
- Weight
- 533 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0021-8995
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📜 SIMILAR VOLUMES
This study reports the synthesis of polyurethane±imide (PU±imide) copolymers using 4,4'diphenylmethane diisocyanate (MDI) polytetramethylene glycols (PTMGs) and different aromatic dianhydrides. Differential scanning calorimetry (DSC) results indicate that PU±imide copolymers had two phase structures
Fully imidized random amide imide copolymers (rPAI) can be prepared in an aprotic solvent from trimellitic anhydride chloride (TMAc) and mixtures of various aromatic diamines via condensation polymerization. The polymers are soluble in a number of aprotic organic solvents including 1-methyl-2-pyrrol
Dynamic mechanical properties have been investigated over the temperature range of -150-360°C for the quinazolone-imide copolymers, prepared by condensation of the amine-terminated quinazolone prepolymer with a stoichiometric quantity of pyromellitic dianhydride or 3,3',4,4'-benzophenone-tetracarbox
Polyimides of different structures were synthesized by reaction of 1,4phenylene diisocyanate (PPDI) and 1,5-naphthalene diisocyanate (NDI) with pyromellitic dianhydride (PMDA) and 3,3Ј,4,4Ј-benzophenonetetracarboxylic dianhydride (BTDA). Polyamide-imides were also prepared by reaction of PPDI and ND