The de-proteinised natural rubber (DPNR) serum was collected from the DPNR factory.
Figure 6 shows a HPLC chromatogram of vitamin E standards and DPNR serum extract using Normal Phase - High Performance Liquid Chromatography (NP-HPLC).
In spite of the overall lower Mooney viscosities of the skim rubber masterbatches after the first mixing step, the Mooney viscosities with curative included by mill mixing are almost comparable with those of the NR and DPNR compounds.
f] is reduced with increasing dump temperature for the NR and DPNR compounds.
Graft-copolymerization of the DPNR
latex was carried out with styrene or acrylonitrile as a monomer, using tert-butyl hydroperoxide with tetraethylenepentamine as an initiator.
fined the company US$260,000, for blocking public access to the beach.
Vanderbilt; "Additives for antimicrobial latexes and biofilm resistant materials," Svoboda Tabakova, Vera Mircheva and Nadejda Assenova, Bulgarian Academy of Sciences, Bulgaria; and "Effect of fillers on the surface properties of NR and DPNR
officials have urged people to avoid standing or running water in areas such as the Frederiksted Pier.
The Company anticipates that effective July 1, 1997, the Company's NASDAQ Trading Symbol will be changed froM DPNR
with rubber soluble curative produces vulcanizate that is low in compression set and creep and has good dynamic properties.
The RRIM has produced DPNR
by this method since 1974, but the processes involved were too complex for it to be widely adopted by the industry.
Vytex latex is made using a protein precipitation and elimination step and so, unlike the DPNRs
, is a genuinely low protein latex (Honeycutt et al.