 MRB
has recently developed a low-protein peroxide prevulcanised NR latex
that is able to address the three major health related issues simultaneously,
namely nitrosamines, chemical sensitizers and proteins.
Manufacturing Process
The flowchart below shows one of the processes of producing low protein
peroxide prevulcanised NR latex.
Properties
The Table below shows typical values of the nitrogen content of low
protein peroxide prevulcanised NR latex and the extractable protein
and allergenic protein contents of films prepared from this latex.
|
| prevulcanised
latex
|
Filma |
Treatment |
Nitrogen (%) |
Extractable proteinsb
(mg/dm2)
|
Allergenic proteinc
AU/ml
|
Untreated |
0.25 |
95 |
11 |
Treatment |
0.11 |
< 50 |
<5 |
a Films were wet-gel leached
(5 minutes at 50°C) plus post-dry leached (30 seconds at 50°C).
b ASTM D5712-99 method
c IgE-ELISA inhibition method
|
|
| The tensile properties of film prepared
from low protein peroxide prevulcanised NR latex are similar to that
prepared normal peroxide prevulcanised NR latex. |
