Resin Production

Knop, André; Scheib, Walter

doi:10.1007/978-3-662-11309-7_4

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…Phenol-formaldehyde oligomers can be utilised in various applications, and many synthetic methods for their formation are available 16) . The synthesis of naphthol/formaldehyde oligomers has received less attention.…”

Section: Resultsmentioning

confidence: 99%

Azo dyes based on naphtholic oligomers

Naik

Desai²,

Patel

1999

Angew. Makromol. Chem.

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A series of oligomeric azo dyes has been prepared by coupling various diazonium salts of benzothiazoles to 1‐naphthol/formaldehyde (1‐NF) and 2‐naphthol/formaldehyde (2‐NF) oligomers. They were characterised in terms of their softening point, yield, colour, solubility and UV‐VIS spectra. Structure‐property relationships are discussed. Dyeing on polyester, nylon‐6,6, and wool resulted in orange to red coloration having excellent light and washing fastness properties.

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Section: Resultsmentioning

confidence: 99%

Azo dyes based on naphtholic oligomers

Naik

Desai²,

Patel

1999

Angew. Makromol. Chem.

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“…17 Indeed, urea-formaldehyde (UF) is an irreplaceable material, has wide technological applications in different emerging fields, and offers high reliability under severe circumstances. Because of the presence of multiple donor sites (amino groups and carbonyl groups per unit) in urea-formaldehyde resin (UFR), 18,19 one can expect that such a system may provide excellent electron donation for coordination.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of antibacterial polychelates of urea–formaldehyde resin with Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) metal ions

Nishat

Ahmad

Ahamad

2006

J of Applied Polymer Sci

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ABSTRACT:We studied the reaction between urea and formaldehyde with the purpose of preparing new polychelates of Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) metal ions. These compounds were characterized by elemental analysis, IR spectroscopy, 1 H-NMR, electronic spectroscopy, thermogravimetric analysis (TGA), and molar conductance measurements. The percentage of metal in all of the polychelates was found to be consistent with 1:1.5 (metal/ligand) stoichiometry. The thermal behaviors of these coordination polymers were studied by TGA in a nitrogen atmosphere up to 750°C. The TGA results reveal that the complexes had higher thermal-resistance properties compared to the common urea-formaldehyde resin. The molar conductivity and magnetic susceptibility measurements of the synthesized polychelates confirmed the geometry of the complexes. The antibacterial activity of the polychelates was also investigated with agar diffusion methods. The antibacterial activity of these polychelates was found to be reasonably good compared with standard drugs, namely, ciprofloxacin, ampicillin, and kanamycin.

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Azo dyes based on phenolic oligomers

Patel

Lad

1991

Angew. Makromol. Chem.

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A series of new oligomeric disperse and acid azo‐phenolic dyes were prepared by coupling various aromatic diazonium salts to phenol‐formaldehyde (PF), m‐cresol‐formaldehyde (CF) and resorcinol‐formaldehyde (RF) oligomers. They were characterized in terms of their softening points, colour, solubility, IR and UV‐Vis spectra and thermogravimetric properties. Their dyeing on polyester, nylon and wool resulted in yellow, orange, and brown to red shades with good to excellent light‐fastness and wash‐fastness properties.

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Resin Production

Cited by 5 publications

References 3 publications

Azo dyes based on naphtholic oligomers

Azo dyes based on naphtholic oligomers

Synthesis and characterization of antibacterial polychelates of urea–formaldehyde resin with Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) metal ions

Azo dyes based on phenolic oligomers

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