Curing of epoxy oligomers by isocyanates
โ Scribed by T.I. Kadurina; V.A. Prokopenko; S.I. Omelchenko
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 740 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0032-3861
No coin nor oath required. For personal study only.
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## Abstract This paper describes the preparation and the enhancing effect on anionic UVโcuring of epoxy resins of three and fourโarmed oligomers bearing 9โfluorenylmethyl carbamate residues, which displayed the autocatalytic formation of primary amino residues triggered by a photogenerated amine. T
## Abstract Dielectric measurements were performed in โrealโtimeโ at several temperatures to follow polymerization reactions on blends of a diglycidyl ether of bisphenol A (DGEBA) epoxy resin with 4, 4โฒโdiaminodiphenylmethane (DDM) hardener and different amounts of polyoxypropylenetriamine (POPTA)
A synthesized polydimethylsiloxane containing an isocyanate group was used to improve the flexibility and to reduce the internal stress of epoxy resin cured with MDA (4,4ะ-methylene dianiline). The effect of polysiloxane content on the curing kinetics of a novolac-type epoxy modified with an isocyan