CHARACTERISTICS:
Dyphene® 8318 is an oil-soluble, non-heat reactive
alkyl phenolic novolak resin that imparts
exceptional initial tack and tack retention to
rubber compounds. It is used extensively as a
tackifier in tire compounds based on blends of NR,
SBR and BR.
·
Imparts high initial tack in green rubber stock
(auto-adhesion)
·
Retains a high level of tack even after extended
exposure to high temperature and humidity.
·
Exhibits good compatibility.
· Offers greater economy than many less expensive
resins because lower loadings of DYPHENE® 8318 can
yield equivalent tack.
·
Functions as a processing aid, aids dispersion of
other compounding ingredients, reduces mixing
viscosity.
·
Outperforms hydrocarbon resins for tack, tack
retention and physical properties in many
applications.
SUGGESTED USES: Tackifying resin for
building tack in tire carcass stocks using NR/SBR
and NR/SBR/BR blends, and innerliner recipes
containing chlorobutyl/SBR/NR blends.
Tackifying resin for tire cements,
rubber-compounding applications that now use
hydrocarbon resins.
SOLUBILITY:
Recommended solvents for DYPHENE 8318 include:
Acetone
Xylene
Methyl Ethyl Ketone
Toluene Hexane
VM&P Naphtha
Rubber Solvent Carbon Tetrachloride
Recommended Storage: Store in dry area.
Shelf life is more than one year at temperatures of
100°F
or lower.
Standard Package: 50# bags
SPECIFICATIONS:
| -
Appearance
and Form: Clear, yellow to amber
flakes |
|
|
-
Softening point (Ring & Ball)°C |
85-95 |
|
|
|
-
Acid Number |
25-43 |
|
|
|
-
Acetone Insolubles |
0.5 max |
|
|
|
- Flake thickness, inches |
0.75 - .125 |
|
|
| -
Gardner Holdt Viscosity
(num) |
1.4 - 3.8 |
|
|
| -
*Specific Gravity |
1.00-1.050 |
|
|
|
*Not
shown on COA |
|
|