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Brominated Isopropylidene (BISOP)
DESCRIPTION
BISOP is a white powdery or granular flame retardant (FR) containing both aromatic and aliphatic bromine.
Outstanding application properties of BISOP are:
-better FR performance than brominated aromatic FRs
-due to high thermal stability suitable for plastics requiring high processing temperature
-UV stability
-important alternative to the proscribed HBCD
PRODUCT GROUP
- Flame Retardants
SYNONYMS
1,1’-(Isopropylidene)bis(3,5-dibromo-4-(2,3-dibromo-2-methylpropoxy)benzene));
1,1′-propane-2,2-diylbis[3,5-dibromo-4-(2,3-dibromopropoxy)benzene];
1,3-dibromo-2-(2,3-dibromo-2-methylpropoxy)-5-{2-[3,5-dibromo-4-(2,3-dibromo-2-methylpropoxy)phenyl]propan-2-yl}benzene
MAJOR APPLICATIONS
Compounds, master batches and plastics of:
a) EPS (Expanded PS) and XPS (Extruded PS).
To reach B2 class the usual dosage in EPS is 1,5-2% BISOP.
Since BISOP is thermally not that stable (as Br-BSC), in the production of XPS it has to be first blended into master batch and as such added into the PS. Otherwise it will decompose during the production. Dosage in XPS is 2-3% on total formulation.
b) PS, HIPS
c) PP
The plastic parts manufactured from a) are thermal- and sound insulating elements like slabs, blocks used in buildings, packaging (with and without thermal insulation function), shock absorbers, etc.
From b) and c) are those with higher technical performance used in various technical and everyday life, construction, machine industry etc. To enhance their properties they can be reinforced by fibers and fillers.
