Accelerators
and retarders
Mercapto
accelerators
Very
fast accelerators giving a very broad plateau and good aging resistance.
Can be used for a variety of technical goods and tires.
| Product |
Chemical
composition |
International
abbreviation |
Density
(g/cm3) |
Initial
melting
point (°C) |
Supply
form |
| Qualicit®
Merkapto |
2-mercaptobenzothiazole |
MBT |
1.5 |
min.
174 |
2,
3, 7, 8 |
| Qualicit®
ZM |
zinc-2-mercaptobenzothiazole |
ZMBT |
1.7 |
- |
2 |
| Qualicit®
ZM-5 |
zinc-2-mercaptobenzothiazole
(low MBT version of Qualizit ZM) |
ZMBT |
1.7 |
- |
2 |
| Qualicit®
DM |
dibenzothiazyl
disulfide |
MBTS |
1.5 |
min.
168 |
3,
7, 8 |
| Qualicit®
F 1 |
combination
of dibenzothiazyl disulfide and basic accelerators |
- |
1.4 |
- |
3 |
1)
This product is marketed by Rhein Chemie Rheinau GmbH
Sulfenamide accelerators
Fast
but very safe accelerators giving a much delayed onset of cure.
For tires and dynamically stressed technical goods (mounts
and conveyor belts), also molded and extruded articles.
| Product |
Chemical
composition |
International
abbreviation |
Density
(g/cm3) |
Initial
melting
point (°C) |
Supply
form |
| Qualicit®
CZ |
N-cyclohexyl-2-
benzothiazyl sulfenamide |
CBS |
1.3 |
min.
98 |
3,
4, 5 |
| Qualicit®
NZ |
N-tert-butyl-
benzothiazyl sulfenamide |
TBBS |
1.3 |
min.
106 |
4,
5 |
| Qualicit®
MOZ |
2-(morpholinothio)-
benzothiazole |
MBS |
1.4 |
- |
6 |
| Qualicit®
DZ |
N,N-dicyclohexyl-2-
benzothiazyl sulfenamide |
DCBS |
1.2 |
min.
96 |
5 |
Thiuram accelerators
Fast
accelerators, both alone and in combination with other accelerators.
Especially suitable for
low-sulfur and sulfur-free Qualinization. For technical goods.
| Product |
Chemical
composition |
International
abbreviation |
Density
(g/cm3) |
Initial
melting
point (°C) |
Supply
form |
| Qualicit®
Thiuram |
tetramethyl
thiuram disulfide |
TMTD |
1.4 |
min.
142 |
3 |
| Qualicit®
I |
dimethyl
diphenyl thiuram disulfide |
- |
1.3 |
min.
180 |
2 |
Dithiocarbamate
accelerators
Very
fast Qualinization accelerators for technical goods, both alone
and in combination with
other accelerators.
| Product |
Chemical
composition |
International
abbreviation |
Density
(g/cm3) |
Initial
melting
point (°C) |
Supply
form |
| Qualicit®
LDA |
zinc
diethyl dithiocarbamate |
ZDEC |
1.5 |
min.
175 |
2 |
| Qualicit®
P extra N |
zinc
ethyl phenyl dithiocarbamate |
ZEPC |
1.5 |
min.
200 |
2 |
| Qualicit®
ZBEC |
zinc
dibenzyl dithiocarbamate |
ZBEC |
1.4 |
min.
182 |
2,
3 |
Guanidine
accelerator
Secondary
accelerator used in combination with mercapto and sulfenamide accelerators.
For silica-filled tire compounds and technical goods, and
as foam stabilizer for latex.
| Product |
Chemical
composition |
International
abbreviation |
Density
(g/cm3) |
Melting
point (°C) |
Supply
form |
| Qualicit®
D |
diphenyl
guanidine |
DPG |
1.2 |
min.
145 |
2,
3, 5 |
Amine accelerators
Qualicit
576: fast accelerator for highly elastic goods.
Cohedur H 30: slow accelerator for bulky goods and secondary
accelerator for use with products of the mercapto class.
| Product |
Chemical
composition |
International
abbreviation |
Density
(g/cm3) |
Melting
point (°C) |
Supply
form |
| Qualicit®
576 |
butyraldehyde-aniline
condensation product |
- |
1.0 |
- |
1 |
| Cohedur®
H 30 |
hexamethylene
tetramine with approx. 3% amorphous silica |
HMT |
1.3 |
sublimes |
2 |
Qualinisation
retarders
-
Qualilent B: retarder for light-colored non-staining rubber
goods.
-
Qualilent E: suitable for retarding mercapto accelerators and
thiuram Qualinization.
-
Qualilent G: the most powerful retarder in the range, suitable
for both light and dark goods.
| Product |
Chemical
composition |
International
abbreviation |
Density
(g/cm3) |
Initial
melting point (°C) |
Supply
form |
| Qualilent®
B/C |
phthalic
anhydride |
PTA |
1.5 |
min.
128 |
3 |
| Qualilent®
E/C |
N-phenyl-N-
(trichloromethylsulfenyl)- benzene sulfonamide with additives |
- |
1.7 |
- |
3 |
| Qualilent®
G |
N-cyclohexylthiophthalimide |
CTP |
1.3 |
min.
89 |
11 |
