Search results for "prepolymer"

showing 3 items of 13 documents

Crystal structure of the diglycidyl ether of eugenol

2017

The diep­oxy monomer (DGE-Eu) was synthesized from eugenol by a three-step reaction. It consists of a 1,2,4-tris­ubstituted benzene ring substituted by diglycidyl ether, a meth­oxy group and a methyl­oxirane group. The three-membered oxirane rings are inclined to the benzene ring by 61.0 (3) and 27.9 (3)°. In the crystal, mol­ecules are linked by C—H⋯O hydrogen bonds, forming layers parallel to the ab plane.

crystal structureDiglycidyl etherEpoxideep­oxy thermoset prepolymer02 engineering and technologyCrystal structure010402 general chemistryRing (chemistry)01 natural scienceseugenol derivativeResearch CommunicationsCrystalchemistry.chemical_compound[ CHIM.CRIS ] Chemical Sciences/CristallographyPolymer chemistry[CHIM.CRIS]Chemical Sciences/Cristallography[CHIM]Chemical SciencesGeneral Materials Science[CHIM.CRIS] Chemical Sciences/CristallographyBenzeneComputingMilieux_MISCELLANEOUSbio-based mol­eculebio-based moleculeCrystallographyHydrogen bondGeneral Chemistry[PHYS.MECA]Physics [physics]/Mechanics [physics]021001 nanoscience & nanotechnologyCondensed Matter Physicshydrogen bonding3. Good health0104 chemical sciencesCrystallographyMonomerchemistryQD901-999oxiraneepoxy thermoset prepolymer[PHYS.MECA] Physics [physics]/Mechanics [physics]0210 nano-technology
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Nature of activating effect of two-step polymerization of propylene

1999

The prepolymerization effect on propylene polymerization in the presence of a TiCl 3 -based catalyst, modified by di-n-buthyl ether, was studied. The influence of prepolymerization on the electron spin resonance spectra and morphology of the catalyst, as well as the properties and the morphology of both prepolymer and regular polymerization products, was investigated. The polymer morphology was evaluated through scanning electron microscopy, polymer bulk density, and particle size distribution. Some evidence of the enhancement effect of prepolymerization on the catalyst activity and stereospecificity was obtained. No influence from prepolymerization was observed on molecular weight and its …

inorganic chemicalsPolypropylenechemistry.chemical_classificationPolymers and PlasticsScanning electron microscopeorganic chemicalsGeneral ChemistryPolymerSurfaces Coatings and FilmsCatalysischemistry.chemical_compoundCrystallinitychemistryChemical engineeringPolymerizationPolymer chemistryMaterials Chemistryheterocyclic compoundsZiegler–Natta catalystPrepolymerJournal of Applied Polymer Science
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Nature of activating effect of two‐step polymerization of propylene

1999

The prepolymerization effect on propylene polymerization in the presence of a TiCl3‐based catalyst, modified by di‐n‐buthyl ether, was studied. The influence of prepolymerization on the electron spin resonance spectra and morphology of the catalyst, as well as the properties and the morphology of both prepolymer and regular polymerization products, was investigated. The polymer morphology was evaluated through scanning electron microscopy, polymer bulk density, and particle size distribution. Some evidence of the enhancement effect of prepolymerization on the catalyst activity and stereospecificity was obtained. No influence from prepolymerization was observed on molecular weight and its di…

polymer characterizationspropylene polymerizationprepolymerizationcatalystprepolymerJournal of Applied Polymer Science
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