Synthesis and Application of Oligomer with Hydroxy Groups based on Peroxy Derivative of ED-24 Epoxy Resin and PolyTHF-2000 Oligoether (original) (raw)

Synthesis and Use of Polyoxychloropropylen-Epoxymethacrylate Oligoesters as Active Modifier of Epoxy Diane Resin Ed-20

— The synthesis of polyoxychloropropylenepoxymethacrylate oligoesters by esterification of polyoxychloropropylenetriepoxide by methacrylic acid has been carried out. It has been established that by varying the conditions of carrying out of the reaction, one can prepare, mainly, the mono-, di-and trimethacrylic oligoesters. On the basis of epoxy diane ED-20 and synthesized polyoxychloropropylenepoxymethacrylate oligoesters as modifiers there have been prepared the self-extinction compositions, which after curing by N, N 1 –diaminodiphenylsulfone possess higher physical-mechanical, adhesion and heat-physical properties.

Synthesis of peroxy oligomers on the basis of epoxy compounds in presence of tert-butylperoxymethanol

Chemistry and Chemical Technology, 2007

We have studied the possibility of peroxy oligomers synthesis by chemical modification of epoxy resins with tert-butylperoxymethanol or diepoxy compounds telomerization with glycols in the presence of trifluorine boron using tert-butylperoxymethanol as telogen. The reaction conditions have been determined and synthesis procedures have been developed. The structures of synthesized products were proved by chemical, IR-and PMR-spectroscopic investigations.

Synthesis of peroxy oligomers using 1,2-epoxy-3-tert-butyl peroxypropane

Chemistry & Chemical Technology

The possibility of peroxy oligomer synthesis has been studied by three methods: telomerization of diepoxy derivatives of ethylene glycol or Bisphenol A using 1,2-epoxy-3-tert-butyl peroxypropane as telogen, modification of phenol-formaldehyde resins by 1,2-epoxy-3-tert-butyl peroxypropane and polycondensation of phenol containing –O–O– bonds with formaldehyde. The peroxy oligomers obtaining conditions have been established and 7 new oligomers with peroxy groups have been synthesized. The structures of synthesized oligomers have been verified by chemical and spectral methods.

Synthesis and characterization of oligosalicylaldehyde-based epoxy resins

Chemical Papers, 2006

The synthesis of a new epoxy resin of oligosalicylaldehyde by the reaction with epichlorohydrin is reported. New resin's epoxy value and chlorine content were determined and found to be 25 % and 1 %, respectively. The characterization of the new resin was instrumented by FTIR, 1 H NMR, scanning electron microscopy, and thermal gravimetric analyses. TGA results showed that the cured epoxy resin has a good resistance to thermal decomposition. The mass losses of cured epoxy resin were found to be 5 %, 10 %, 50 % at 175 • C, 240 • C, and 400 • C, respectively. On the curing procedure the resin was cured with polyethylenepolyamine at 25 • C for 8 h and 100 • C for 1.5 h. The FTIR spectrum of new epoxy resin gave the peak of oxirane ring atν = 918 cm −1 .

Chemical Modification of ED-24 Epoxy Resin Peroxy Derivative by C9H4F16O Fluorine-Containing Alcohol-Telomer

Chemistry and Chemical Technology, 2010

The possibility of chemical modification of ED-24 epoxy resin peroxy derivative (PDER) by C9H4F16O fluorine-containing alcohol-telomer (FAT-C9) has been shown using 18-Crown and ZnCl2 catalytic system. The effect of catalyst amount, temperature and process time on the reaction rate has been studied. New peroxy oligomer containing fluorine atoms (FPO) has been synthesized and characterized. The FPO structure has been confirmed by IR-spectroscopy. It has been proposed to use FPO as an active additive to the polymeric mixes based on ED-20 industrial epoxy resin and TGM-3 oligoesteracrylate.

Synthesis and study of the oligo(ether-ester)s based on butylene oxide

Journal of Applied Polymer Science, 2008

Unsaturated oligo(ether-ester) was prepared by ring-opening polymerization of butylene oxide (BO) with glycidyl methacrylate (GMA) in the presence of cationic catalyst BF 3 O(C 2 H 5) 2. The effects of mol ratio of the initial components, amount of catalyst, temperature, and reaction times on the copolymerization reaction were examined. Oligo(ether-ester) were achieved in highest yield of 82% after reaction times of 4 h at 08C. Synthesized copolymer was characterized using spectroscopic (1 H NMR and IR) and chemical analysis methods. The thermal degradation and softing points of oligo(ether-ester)-styrene composites were studied. It is shown that crosslinking of the unsaturated oligo(ether-ester) with styrene takes place through the use of thermostable materials.

Synthesis Mechanism and Properties of Epoxy Resins Modified with Adipic Acid

Chemistry & Chemical Technology, 2019

The mechanism of diepoxide and adipic acid (AA) reaction in the presence of benzyltriethylammonium chloride and 1,4-diazobicyclo[2,2,2] octane has been proposed. The thermal stability of the oligoester obtained via chemical modification of the dioxydiphenylpropane diglycidyl ether with AA and epoxy-oligoesteric mixtures with its participation has been studied. The viscoelastic properties of films based on epoxy-oligoesteric mixtures containing Epidian-5 epoxy resin, TGM-3 oligoesteracrylate, AA modified Epidian-5 and polyethylpolyamine have been determined.

Crosslinking of Epoxy-Oligoesteric Mixtures in the Presence of Carboxy-Containing Derivative of ED-24 Epoxy Resin

Chemistry and Chemical Technology, 2013

Cross-linking of epoxy-oligomeric mixtures has been studied at room temperature and at heating to 383, 403 and 423 K for 15, 30, 45, 60 and 75 min in the presence of polyethylenepolyamine. The mixtures consist of industrial ED-20 epoxy resin, oligoesteracrylate TGM-3 and carboxy-containing derivative of ED-24 epoxy resin. The effect of mixture composition, temperature and process time on the gel-fraction content and hardness of polymeric films has been examined. Using IR-spectroscopy the chemism of network formation has been determined.

Synthesis and application of oligomers obtained from oxamic acid and ethylene carbonate

Polimery

The reaction between oxamic acid and ethylene carbonate in the presence of potassium carbonate catalyst was studied. The products were characterized by 1 H NMR, IR and MALDI ToF techniques. The hydroxyethoxy derivatives of the acid are remarkably thermally stable due to the presence of oxalamidoester group. They were used as components of thermally stable polyurethane foams.