Reaction of tall oil pitch with desmodur N isocyanate
- Resource Type
- Authors
- K. Noronen; Väinö A. Erä
- Source
- Journal of the American Oil Chemists’ Society. 55:610-612
- Subject
- chemistry.chemical_classification
0303 health sciences
030309 nutrition & dietetics
Tall oil
Chemistry
General Chemical Engineering
Organic Chemistry
Infrared spectroscopy
04 agricultural and veterinary sciences
Polymer
040401 food science
Isocyanate
Catalysis
Reaction rate
03 medical and health sciences
chemistry.chemical_compound
0404 agricultural biotechnology
Polymer chemistry
Ultimate tensile strength
Absorption (chemistry)
- Language
- ISSN
- 1558-9331
0003-021X
The reaction between six tall oil pitch (TOP) grades and Desmodur N Isocyanate was followed by IR spectroscopy by decrease of NCO absorption in the film cast from the reaction mixture. Time-conversion curves show that the reactivities of three TOP grades are of the same magnitude up to 50% conversion, while in the other grades considerably slower reaction rates were observed. In most catalyzed reactions 90% conversion was completed during 14 days. Development of tensile properties of the films during the reaction sequence indicates the formation of polymers. Hypothetical routes for the reaction are presented.