The versatility of the reaction of the isocyaiiate group with various active hydrogen compounds, and some polymers made by this type of reaction, have been discussed recently. Among the unusual active hydrogen compounds which have not been adequately investigated as polymer formers with diisocyanate
Condensation polymers from diisocyanates and dioximes
β Scribed by Tod W. Campbell; Veronika S. Foldi; Robert G. Parrish
- Publisher
- John Wiley and Sons
- Year
- 1959
- Tongue
- English
- Weight
- 500 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Diisocyanates condense readily with the two active hydrogen atoms in dioximes to give high molecular weight linear condensation polymers. In several cases these polymers, such as the one from cyclohexanedione dioxime and 4,4β²βbiphenylene diisocyanate,
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may be converted to tough films or fibers. Thermal, hydrolytic, and light stability of these polymers were in general poor.
π SIMILAR VOLUMES
## AbstracGPolycondensation of biphenols such as 2,2-di(4-hydroxyphenyl) propane, I-phenyl-l,l-di(C hydroxyphenyl) ethane, l,l-di(4-hydroxyphenyl) cyclohexane and dihydroxynaphthalenes with glyoxal resulted in a ladder type of polymers. The structures of the ladder polymers were elucidated by FTIR
## Abstract Several castor oilβbased polyurethanes (PUs) samples were synthesized using various diisocyanates such as hexamethylene diisocyanate (HMDI) with varying NCO/OH ratios. All the PUs were reacted with methacrylamide (MAM) using an ethylene glycol dimethacrylate (EGDM) crosslinker and benzo