| HS Code | 286986 |
| Softening Point | 100 °C |
| Color Gardner | <1 |
| Molecular Weight Mn | ~750 |
| Melt Viscosity 190 C | ~500 cP |
| Glass Transition Temperature | ~50 °C |
| Specific Gravity 25 C | 1.04 |
| Flash Point Coc | 260 °C |
| Thermal Stability | Excellent, retains color and softening point upon heat aging |
| Acid Value | <1 mg KOH/g |
| Chemical Family | Aromatic hydrocarbon resin |
As an accredited Piccotex 100 Aromatic Hydrocarbon Resin with Thermal Stability factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in 25 kg multi-wall paper bags, ensuring safe handling, contamination prevention, and thermal stability preservation. |
| Container Loading (20′ FCL) | 20′ FCL: Piccotex 100 resin loaded as palletized, heat-stable bags, secured for safe transport and efficient unloading. |
| Shipping | Piccotex 100 Aromatic Hydrocarbon Resin ships as solid pastilles or pellets, typically in multi-wall paper bags or meltable form. It is non-regulated under most transport rules, but keep dry and away from heat sources. Store in a cool, ventilated area; avoid direct sunlight to preserve thermal stability. |
| Storage | Store Piccotex™ 100 in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep containers tightly sealed to prevent contamination and moisture pickup. Avoid prolonged storage above recommended temperatures, although the resin offers thermal stability. Maintain segregation from strong oxidizers. Proper storage preserves quality for up to two years. |
| Shelf Life | Store in a cool, dry area in original container. Shelf life is typically indefinite under proper storage conditions. |
In ethylene-vinyl acetate (EVA)-based hot-melt adhesives for case and carton sealing, Piccotex 100 aromatic hydrocarbon resin is introduced as the primary tackifying resin at 15–25 wt% relative to total formula mass, with the EVA phase held at 18–30 wt% and microcrystalline wax at 15–25 wt%. The compounding sequence operates on a co-rotating twin-screw extruder with an L/D ratio of 40:1, barrel zones ramped from 120°C at the feed throat to 175°C at the die plate, and screw speed set at 250–350 rpm; the resin is pre-blended with wax and antioxidant before being fed into the downstream melt port, which limits thermal history and reduces die-head pressure variation. Because Piccotex 100 has a ring-and-ball softening point of 100°C under ASTM E28 and a Gardner color of 1 under ASTM D1544, sustained melt-holding at 165–175°C can be run without the color drift typical of rosin ester tackifiers. Melt viscosity is monitored by ASTM D3236; when viscosity exceeds 1,500 mPa·s at 180°C, coating weight variability increases on the nozzle applicator. The compliance framework for indirect food-contact packaging is FDA 21 CFR 175.105, with additional documentation under REACH Regulation (EC) No 1907/2006 and EU Directive 94/62/EC for packaging waste. Terminal product types include corrugated case sealing, bookbinding spine glues, end-paper gluing, and graphic arts mounting adhesives. Limitation: moisture content above 0.1% in fillers should be controlled by pre-drying at 80°C for 4 h when ambient RH exceeds 60%; high-cis polybutadiene rubber is considered incompatible above 20 phr because phase separation may reduce adhesive tack.
Alkyd and acrylic baking enamels for metal furniture and appliance components incorporate Piccotex 100 at 5–15 wt% based on total binder solids to increase dry-film hardness without proportional solution-viscosity buildup. In production, the resin is cut in xylene at 40–50% solids and added to the grind base before high-speed dispersion at 2,000–3,000 rpm; the premix is subsequently bead-milled to a Hegman grind of 6–7. The coating is applied by electrostatic bell or reciprocating disc at 25–35 μm dry film thickness and baked at 150–170°C for 20–30 min. Because the aromatic resin retards solvent release from the film, ASTM D1640 tack-free and hard-dry times may be extended by 2–5 min compared to an unmodified alkyd at equal solids; ISO 1519 cylindrical bend testing verifies that hardness development does not create film fracture. Compliance is established under EU Directive 2004/42/CE for VOC limits in decorative and maintenance coatings, ASTM D3359-17 for crosshatch adhesion, and RoHS Directive 2011/65/EU for coated appliance parts. Terminal products include metal office furniture, appliance housings, and non-food metal closures. Limitation: two-component isocyanate-cured systems should be avoided unless compatibility is confirmed by pencil hardness and MEK double-rub testing; published data for blocked-isocyanate configurations is limited.
For supercalendered and coated paper printed by publication gravure, Piccotex 100 is used at 5–20 wt% of total liquid ink as a letdown resin and pigment-wetting aid. The resin is dissolved in toluene at 60–80°C in a steam-jacketed kettle to produce a 40–50% solids varnish; the varnish is transferred to a horizontal bead mill containing 1.0–1.2 mm zirconium silicate beads, where carbon black or phthalocyanine blue pigment is dispersed to a grind gauge reading below 5 μm. The aromatic structure reduces mill-base viscosity and permits higher pigment loading at fixed press viscosity. Compliance is evaluated under ISO 2846-3:2002 for colour and transparency of publication gravure inks, EU Directive 2007/42/EC for regenerated cellulose film contact where specific migration testing applies, and U.S. EPA NESHAP 40 CFR Part 63 Subpart KK for printing and publishing operations. Terminal product types include magazine signatures, catalogs, direct mail, and decorative paper wraps. Limitation: the aromatic content may swell natural rubber inking rollers; EPDM or nitrile roller covers are specified. Use in water-based gravure is not recommended because the resin is insoluble in water and requires co-solvent.
In label-stock compounding, SBR-based pressure-sensitive adhesive compounds are evaluated at 10–30 phr relative to rubber content when a formulator needs improved thermal stability during hot-melt coating. The compounding sequence begins in an internal mixer with tangential rotors operating at 40–50 rpm; SBR is masticated with zinc oxide and stearic acid at 70–80°C, then Piccotex 100 is added in two increments to control torque and limit temperature rise. Dump temperature is controlled at 130–140°C, followed by sheeting on a two-roll mill at 60–80°C and calender coating onto release paper or film. Peel adhesion is measured by ASTM D3330/D3330M-04, loop tack by ASTM D3654/D3654M-06, and water resistance by ASTM D3833; indirect food-label constructions reference FDA 21 CFR 175.105. Terminal products include permanent paper labels, graphic films, and technical tape backings. Limitation: at resin loadings above 30 phr in SBR, shear adhesion failure temperature may decline below 60°C in some formulations; validation by ASTM D4498 is required. Published data for UV-crosslinked acrylic hybrids is limited.
Butyl and polyisobutylene-based sealant compounds used in insulating glass edge seals and construction joint fillers incorporate Piccotex 100 at 5–15 wt% of total formulation in a sigma-blade mixer heated to 110–130°C. The butyl polymer is first masticated with calcium carbonate and carbon black for 10–15 min; the resin is then added and mixed at 30–40 rpm for 45–60 min under vacuum to strip residual moisture and entrained air. The compound is discharged through a 100–200 μm filter and extruded into tape or bead form. The resin improves adhesion to glass and aluminum spacer bars without the acidic breakdown products associated with rosin-derived tackifiers. Compliance is anchored to ASTM C920-18 for elastomeric joint sealants, EN 1279-2:2002 for insulating glass units, and FDA 21 CFR 177.2600 where repeated food-contact rubber articles are relevant. Terminal product types include insulating glass edge seal tapes, butyl glazing tapes, and construction sealant beads. Limitation: strong oxidizing acids should be excluded from service environments; storage stability at 50°C for 28 days is recommended to rule out phase separation.
At press speeds of 300–500 m/min on polyethylene film and coated board, solvent-based flexographic inks use Piccotex 100 at 3–12 wt% as a co-resin to improve color density and reduce misting. The resin is dissolved in toluene or xylene at 35–45°C; the varnish is added to pigment concentrates produced on a three-roll mill. Press viscosity is maintained at 22–30 s on a Zahn #2 cup; the resin’s narrow molecular weight distribution reduces ink build-up on doctor blades and permits sustained runs above 400 m/min. Compliance includes ISO 12643-1 for printing press safety, EU Regulation 10/2011 for plastic food-contact materials where migration testing is required, and CONEG model legislation for heavy metals in packaging. Terminal products include polyethylene sacks, multi-wall paper bags, and coated board cartons. Limitation: waterborne flexographic systems require co-solvent addition to maintain resin solubility; alcohol-only diluents may precipitate the resin.
Solvent-borne maintenance primers for structural steel and industrial equipment use Piccotex 100 at 5–10 wt% on total binder solids to improve early water resistance and adhesion to flash-rusted substrates. The primer is manufactured in a high-speed disperser at 1,000–1,500 rpm with a Cowles blade; pigments and extenders are dispersed to a Hegman grind of 5–6. The resin cut is added at the letdown stage, after the mill base has cooled below 60°C, to avoid solvent loss. The primer is applied by airless spray at 75–100 μm wet film thickness and cures by solvent evaporation and oxidative crosslinking. Compliance is evaluated under ISO 12944-5 for protective paint systems on steel structures, ASTM D610-08 for rust grade assessment, and EU Directive 2004/42/CE for VOC limits in maintenance coatings. Terminal products include structural steel primers, bridge maintenance coatings, and industrial equipment undercoats. Limitation: use in epoxy-amine systems is not recommended without a compatibility study; published data for low-VOC waterborne epoxy hybrids is limited.
On asphalt and concrete road surfaces, solvent-borne alkyd traffic marking paints use Piccotex 100 at 5–8 wt% on total binder solids to shorten no-pick-up time and improve adhesion to bituminous substrates. The production sequence disperses titanium dioxide and calcium carbonate in a high-shear mixer at 1,200–1,800 rpm; the resin cut is added during letdown after the mill base temperature falls below 55°C. Application is by airless striping equipment at a wet film thickness of 350–500 μm, with retroreflective glass spheres dropped immediately after paint application. Compliance is evaluated under AASHTO M247 for white and yellow traffic paints, ASTM D713-90 for no-pick-up time, and U.S. Federal Specification TT-P-1952F. Terminal product types include road centerline markings, edge-line markings, crosswalk markings, and airport runway markings. Limitation: not recommended for waterborne traffic paint formulations due to resin insolubility in water; published data for low-VOC formulations is limited.
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Piccotex 100 is an aromatic hydrocarbon resin produced from refined aromatic feedstocks and supplied as a pale solid flake or pastille. The product designation corresponds to a nominal ring-and-ball softening point of 100 °C under ASTM E28-18, not to a guaranteed single-lot value. Lot release limits are stated on the certificate of analysis. The resin is characterized by a low acid number, negligible saponifiable content, and a comparatively narrow molecular weight distribution relative to conventional cracked petroleum C9 aromatic resins. Because the backbone is aromatic and non-ester, it does not hydrolyze in the same manner as rosin ester tackifiers, and it does not introduce significant acid functionality into hot-melt or solvent-borne formulations.
Table 1 lists typical reference data. These values are not a purchase specification; test method details and sample conditioning history affect results, particularly ring-and-ball softening point and melt viscosity.
| Property | Test method | Typical value | Unit |
|---|---|---|---|
| Softening point, ring-and-ball | ASTM E28-18 | 98–102 | °C |
| Gardner color | ASTM D1544-18 | ≤1 | — |
| Melt viscosity at 150 °C | ASTM D3236-15 | 800–1,200 | mPa·s |
| Acid number | ASTM D974-14e2 | <0.5 | mg KOH/g |
| Saponification number | ASTM D1394-76 | <1.0 | mg KOH/g |
| Density at 25 °C | ASTM D4052-18a | 1.05–1.07 | g/cm³ |
| Flash point, Cleveland open cup | ASTM D92-18 | >200 | °C |
| Glass transition temperature, midpoint | ASTM E1356-08(2014) | 45–55 | °C |
In continuous hot-melt compounding, thermal stability is not adequately described by softening point alone. The practical limit is the point at which melt viscosity drift and Gardner color development exceed formulation tolerance. On a twin-screw extruder with L/D 40 screw geometry and barrel temperatures between 140 °C and 170 °C, Piccotex 100 is typically pre-blended with the polymer phase before the main feed rather than injected as a separate molten stream. This sequence reduces localized temperature overshoot at the screw root. A specific mechanical energy input of 0.12–0.18 kW·h/kg is commonly encountered for this resin class, but line-specific values vary with screw design and throughput.
When the resin is held in a heated stirred tank during adhesive production, melt viscosity at 150 °C should be monitored according to ASTM D3236-15. A viscosity increase greater than 10% over an 8 h hold period is conventionally interpreted as oxidative degradation or contamination by unsaturated process oils. Nitrogen blanketing is recommended when hold times exceed 6 h because aromatic rings undergo free-radical oxidation at headspace temperatures above 150 °C. Under nitrogen thermogravimetric analysis, the 5% mass-loss temperature typically exceeds 280 °C at a heating rate of 10 °C/min. In air, measurable mass loss can begin near 180 °C. Published data for the exact air-atmosphere onset of this specific grade are limited, so a formulation-specific TGA scan should be obtained before setting a maximum processing temperature.
The high-temperature processing window is constrained by opposing requirements. Below 140 °C, melt viscosity rises above 2,000 mPa·s and can produce torque spikes in small compounding lines. Above 190 °C, oxidative color development can increase Gardner color by more than 2 units within 45 min unless inert gas is used. This ±5 °C practical control band around the upper limit is significant for multi-point barrel temperature control. Barrel zones should not be set more than 10 °C above the die temperature when the resin is present at high loading.
Piccotex 100 differs from conventional broad-distribution C9 aromatic resins in molecular architecture and thermal response. Broad C9 resins produced from cracked petroleum fractions often exhibit higher polydispersity, darker initial color, and higher residual aromatic olefin content. Piccotex 100 is supplied with a Gardner color at or below 1 under ASTM D1544-18 and shows lower melt viscosity drift during extended heating. The narrower distribution reduces the tendency for low-molecular-weight fractions to volatilize during high-temperature adhesive compounding.
Compared with pentaerythritol and glycerol rosin ester tackifiers, Piccotex 100 has an acid number below 0.5 mg KOH/g, whereas rosin esters commonly fall between 5 mg KOH/g and 15 mg KOH/g. This difference is critical in formulations containing acid-sensitive polymers, reactive metal oxides, or aluminum pigments. The non-ester aromatic structure also provides greater resistance to hydrolysis under humid service conditions. However, rosin esters may provide higher specific adhesion to polar substrates such as aluminum foil and corona-treated polyester. A direct equal-weight replacement in an ethylene-vinyl acetate adhesive can therefore increase thermal color stability but may require formulation adjustment to maintain peel or fiber-tear performance.
Against aliphatic C5 hydrocarbon resins, Piccotex 100 has higher aromaticity and higher polarity. This improves pigment wetting and solubility in ester and ketone solvents, but it reduces compatibility with low-polarity amorphous polyolefins and natural rubber. Table 2 summarizes these comparative envelopes as typical industrial ranges, not as purchase specifications.
| Resin class | Softening point | Acid number | Gardner color | Melt viscosity at 150 °C | Aliphatic solvent tolerance | Hydrolytic stability |
|---|---|---|---|---|---|---|
| Piccotex 100 | 98–102 °C | <0.5 mg KOH/g | ≤1 | 800–1,200 mPa·s | limited | high |
| Broad C9 aromatic resin | 95–105 °C | <1 mg KOH/g | 7–10 | 1,500–3,000 mPa·s | limited | high |
| Pentaerythritol rosin ester | 100–110 °C | 5–15 mg KOH/g | 3–6 | 800–1,500 mPa·s | moderate | limited |
In ethylene-vinyl acetate hot-melt adhesives, Piccotex 100 is typically evaluated at 15–25 wt% of the total formulation. At equal-weight replacement of a 100 °C rosin ester, compound viscosity can rise by 10–20% depending on the vinyl acetate content of the EVA grade and the wax package. The hydrocarbon wax level is frequently reduced by 2–5 phr to restore target spiral flow or Brookfield viscosity. Open time and set time shift in opposite directions because the aromatic structure stiffens the amorphous phase. Open time may shorten by 2–5 s in a 160 °C bench test, while low-temperature fiber tear on corrugated board can be maintained if the adhesive film remains tough rather than brittle.
In solvent-borne flexographic and gravure inks, Piccotex 100 is dissolved into toluene, xylene, ethyl acetate, or ketone blends at solids between 30 wt% and 45 wt%. The aromatic solubility parameter enables wetting of organic pigments such as phthalocyanine blue and carbon black, but it reduces tolerance for aliphatic diluents. Because the resin has a higher glass transition temperature than many C5 aliphatic tackifiers, it increases varnish hardness and can improve blocking resistance when used at 5–15 wt% of the total ink vehicle.
In high-speed flexographic printing above 250 m/min, retained solvent can increase if Piccotex 100 replaces a lower-Tg resin without a corresponding increase in drying capacity. Low-boiling acetate/ethanol blends may require reformulation to avoid exceeding residual solvent limits under ISO 12634 or customer-specific gravure residual solvent specifications. In gravure ink applications, the resin should be milled into the formulation rather than added as a dry flake at the letdown stage; poor dispersion under high-speed bead milling can create filter pressure rise and doctor blade streaking.
When Piccotex 100 is evaluated in styrene-isoprene-styrene or styrene-butadiene-styrene block copolymer adhesives, the aromatic resin preferentially associates with the styrene end-blocks and can increase cohesive strength at ambient temperature. At 10 wt%, the increase in softening point is usually manageable. Above 30 wt%, low-temperature tack loss and viscoelastic stiffening become pronounced in SIS-based pressure-sensitive adhesives tested by loop tack under ASTM D6195-03. Piccotex 100 is not a drop-in replacement for a mid-block-compatible hydrogenated hydrocarbon tackifier in styrenic block copolymer systems without reformulation of the plasticizing oil, because the aromatic structure shifts the mid-block/end-block compatibility balance.
In acrylic pressure-sensitive adhesives, Piccotex 100 can function as a hard aromatic modifier at 5–12 wt% of polymer solids. It raises shear adhesion failure temperature when measured by ASTM D4498-07 but can reduce peel adhesion at 2 °C if the acrylic copolymer already has a glass transition temperature above -20 °C. This trade-off is a property cliff-edge: additions above 15 wt% often produce visible haze or phase separation in acrylic solution adhesives, particularly in ethyl acetate/toluene solvent blends containing ethanol. On film-coating lines, phase separation can appear as orange-peel surface defects or transfer roll streaking when the resin is pre-blended with high-ethanol diluents.
For storage, the resin should be kept in a dry, ventilated area below 32 °C. The solid form can block if stacked above 35 °C or exposed to direct solar radiation. Dust generated during transfer should be controlled; the minimum ignition energy for aromatic resin dust is typically below 30 mJ, and transfer equipment should be bonded and grounded in accordance with IEC TS 60079-32-1 or a local equivalent. Regulatory compliance under REACH Article 33 and RoHS Directive 2011/65/EU should be confirmed against the current safety data sheet, because aromatic resins may contain trace polycyclic aromatic hydrocarbons or low-level residual monomers. The product is not intended for direct food contact unless the specific application is validated under FDA 21 CFR 175.105, 176.170, or 176.180; the manufacturer should be consulted for food-contact approval because migration limits depend on the final article and extraction conditions.
