Reactions of trithiocyanuric acid with oxiranes. IV. Analysis of the initial stages of the synthesis of polyetherols

Chmiel-Szukiewicz, Elżbieta; Lubczak, Jacek

doi:10.1002/app.23608

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…elastomers, rigid foams, elastic foams and other. This raw material became irreplaceable in many aspects of life 1, 2 . Polyols used for polyurethanes should be cheap but should also improve their properties, e.g.…”

Section: Introductionmentioning

confidence: 99%

Different catalysts for new polyols for rigid PUR-PIR foams

Liszkowska

Czupryński

Paciorek‐Sadowska

2015

Polish Journal of Chemical Technology

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New polyols were synthesized with 2-hydroxypropane-1.2.3-tricarboxylic acid and butane-1,4-diol (1.4-BD). The synthesis was performed using different catalysts in the amount of 0.1%. Used catalyst: Tyzor TPT, tin(II) acetate, sulfuric(IV) acid. The fourth reaction was conducted without the use of a catalyst. The polyols' properties were evaluated with regards to the usefulness in rigid polyurethane-polyisocyanurate (PUR-PIR) foams (acid value, density, pH and solubility, FTIR spectra). Based on the research, it was evaluated that only the polyol synthesized using Tyzor TPT (E6) was useful in production of rigid PUR-PIR foams. Its hydroxyl number was 496 mgKOH/g and its viscosity was about 14 552 mPa · s. A series of fi ve foams P6.1-P6.5 was produced with this polyol. Rigid foams test results indicated that the amount of this compound in the foam substantially affects its compressive strength, density and their retention. The foams have low brittleness values.

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Section: Introductionmentioning

confidence: 99%

Different catalysts for new polyols for rigid PUR-PIR foams

Liszkowska

Czupryński

Paciorek‐Sadowska

2015

Polish Journal of Chemical Technology

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Sulfides and Disulfides of s‐Triazine: Potential Thermal Thiyl Radical Generators

Höhne

Posern

Böhme

et al. 2018

Chemistry A European J

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A series of aliphatic and aromatic thioethers and dithioethers of s-triazine were synthesised to study their thermal properties, in particular the thermally induced thiyl radical generation ability. Four symmetric s-triazine sulfides of the type (RS) C N , namely 2,4,6-tris(phenylthio)- (1), 2,4,6-tris(para-tolylthio)- (3), 2,4,6-tris(ethylthio)- (5) and 2,4,6-tris(tert-butylthio)-1,3,5-triazine (7), as well as four symmetric s-triazine disulfides of the type (RSS) C N , namely 2,4,6-tris(phenyldithio)- (2), 2,4,6-tris(para-tolyldithio)- (4), 2,4,6-tris(ethyldithio)- (6) and 2,4,6-tris(tert-butyldithio)-1,3,5-triazine (8) were synthesised. All compounds were comprehensively characterised by H and C NMR, infrared and Raman spectroscopy as well as elemental analyses. Single-crystal X-ray diffraction analyses of 1, 2 and 5 are discussed. The thermal behaviour was studied by thermogravimetric analyses coupled with mass spectrometry (TGA-MS) and quantum chemical calculations. Limiting oxygen index (LOI) flammability tests showed that the disulfides are the most promising radical generators, and are most likely suitable flame retardants for selected polymers.

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Reactions of trithiocyanuric acid with oxiranes. IV. Analysis of the initial stages of the synthesis of polyetherols

Cited by 2 publications

References 5 publications

Different catalysts for new polyols for rigid PUR-PIR foams

Different catalysts for new polyols for rigid PUR-PIR foams

Sulfides and Disulfides of s‐Triazine: Potential Thermal Thiyl Radical Generators

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