摘要:

4-Acetyl phenyl methacrylate containing a polymerizable vinyl group was prepared by reacting 4-hydroxyacetophenone with methacryloyl chloride in the presence of triethylamine in methyl ethyl ketone. The vinyl monomer was characterized by Fourier transform infrared spectra. The polyurethanes obtained from castor oil, tolune-2-4-diisocyanate, and hexamethylene diisocyanate, with a varying NCO/OH ratio, were reacted with the new vinyl monomer 4-acetyl phenyl methacrylate to give interpenetrating polymer networks using ethylene glycol dimethacrylate as a cross-linker and benzoyl peroxide as initiator. The resulting interpenetrating networks were characterized for thermal behavior, and kinetic parameters were evaluated.

ISSN:0360-2559    

DOI:10.1080/03602559909351566

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Oxidation of alkylbenzenes to aryl alcohols and ketones with high selectivity and reactivity by linear polystyrene (PS)- and polystyrene-2% divinyl benzene (DVB)-bound-copper(II) complexes PS-bipy-Cu, PS-bipy-Cu-bipy, PS-bipy-Cu-phen, and PS-2%DVB-bipy-Cu (where bipy = 2, 2′-bipyridine and phen-1, 10-phenanthroline) was studied. The oxidation reaction was carried out in the presence of molecular oxygen in the absence of solvent at 110 ± 5°C. The reaction rate depends on the nature of the electric and steric effects of the substrates, the complex structure, and the polymer matrices.

ISSN:0360-2559    

DOI:10.1080/03602559909351567

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Poly 4-(2-napthalene sulfonyl) styrene [poly(NPS)], a new function-alized polystyrene (PS), was synthesized by sulfonylating polystyrene with the corresponding sulfonyl chloride in the presence of the Frie-del-Crafts catalyst at room temperature. The polymer has been characterized by Fourier transform infrared (FTIR) and nuclear magnetic resonance spectroscopy.

ISSN:0360-2559    

DOI:10.1080/03602559909351568

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Cardanol, the major constituent of cashew nut shell liquid (CNSL), is extracted from CNSL by vacuum distillation at 3–4 mm pressure of mercury and 230–240°C temperature. Cardanyl acrylate, a derivative of cardanol, is prepared by the Kaliyappan method. A number of resins have been synthesized by condensing cardanyl acrylate with furfural and selective organic compounds in the presence of acid as catalyst. The resins have been characterized by Fourier transform infrared spectra. Solvent absorptivity of the resins have been studied by taking toluene and dimethyl formamide as solvents. The thermal behavior of the resins have been studied. The overall activation energy and order of degradation of the resins have also been evaluated using the Freeman-Anderson method.

ISSN:0360-2559    

DOI:10.1080/03602559909351569

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

ISSN:0360-2559    

DOI:10.1080/03602559909351555

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor