Pentadiene plastic

Poiy(pentadiene) (liquid) 1,3-Pentadiene Plasticizer, Paint, Ink... 

Since plasticized sulfur has better mechanical properties than elementary sulfur, the properties of sulfur modified with styrene or dicyclo-pentadiene (DCP) as binder for aggregates were examined. These modifiers seemed to be the most favorable because of both improvement in properties and low price. Furthermore, as stated in the literature, DCP-modified sulfur has a lower combustibility (15). 

Data on the photochemical stability and stabilizing action of HB s, benzotriazoles, and related compounds have been reported on several occasions (6,9,70,71,7,82,87). In order to be a good stabilizer, it is not sufficient that a compound does not decompose if dissolved for example, in a plastic, it is equally important that it does not act as a sensitizer. Investigations on the sensitizing action of HB s compared to that of benzophenone and nonchelated derivatives are, therefore, of interest. Such studies are Included by Lamola (8), A. Heller (80), and Hammond (74). Cls-trans isomerization of piperylene (1,3-pentadiene) in benzene is easily sensitized by benzophenone via triplet transfer... 

PENTADIENE or PENTA-1,3-DIENE (504-60-9) Forms explosive mixture with air (flash point -20°F/-29°C). Violent reaction with strong oxidizers, bromine, perchlorates, perchromates, pyridinium perchlorate, peroxyacetic acid, peroxybenzoic acid. Attacks some plastics, rubber, and coatings. Flow or agitation of substance may generate electrostatic charges due to low conductivity. 

Sulfur can be fully plasticized by using the modifiers dipentene, styrene, and dicyclopentadiene. Sulfur can be plasticized with dicyclo-pentadiene at two minimum concentrations, as indicated in Table III 13% at reaction temperatures of < 140°C and 6% at reaction temperatures > 140 °C. This effect probably results from cracking of the dicyclopentadiene dimer molecule, which doubles the molecules available for reaction. The higher percentage dicyclopentadiene mixture was initially flexible. Upon aging, both plasticized materials became brittle. The reaction is exothermic and very difficult to control above 140 °C. When uncontrolled, extreme viscosity increases were encountered. 

Pentadiene, isoprene Liquid polypentadiene Nippon Zeon Plasticizers Cosmetics Adhesives... 

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