| Phenolic Resin PR331 | |
| Chemical Name | Phenolic Resin PR331 |
| CAS No. | 26678-93-3 |
| Structural Type |  |
|
Specification |
|
|
Item |
Specification |
|
Appearance(visual Inspection) |
Light yellow to Yellow pastilles |
|
Softening point, ℃ |
92-102 |
|
Heating loss % Max |
1.0 |
|
Ash content % Max |
0.5 |
|
Acid value, mgKOH/g |
20-50 |
|
Typical Formula |
|||
| Raw Materials | Parts By Weight | Raw Materials | Parts By Weight |
| NR/BR | 50/50 | Sulfur | 1.5 |
| Carbon Black N660 | 60 | Rubber Process Oil | 4.0 |
| RT1101 | 3 | Accelerant | 1.0 |
| Zinc Oxide | 3 | Stearic Acid | 2.0 |
Properties:
●With excellent initial stickness,PR331 is tackifying accelerant for natural rubber and kinds of synthetic rubber, especially for :cis-1,4-polybutadiene rubber (BR), Styrene- butadiene rubber (SBR),EPDM, butylrubber(IIR);
●A tertiary carbon on the resin alkyl make the alkyl become a branched structure. Thus PR331 has a better compatibility with various synthetic rubber and oil and typically it is used in tire belt, tire sidewall and transfer belt ect;
●PR331 can extend material scorch time, improve processability and handling security;
●Recommended 4-8 parts by weight (100 parts by weight of rubber)
Applications:
PR331 is a novolac P-Tert-Octyl Phenol-Formaldehyde Tackifying Resin, Its performance is equivalent to that of SP1068.
Package
It's packed by 25kgs craft paper bags with PE or PP inner bag.
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