| HS Code | 842291 |
| Product Name | NOVARES CA100 |
| Resin Type | Phenol-modified coumarone-indene resin |
| Appearance | Solid flakes |
| Softening Point Ring And Ball C | 98-102 |
| Acid Value Mg Koh G | <1 |
| Melt Viscosity Mpa S At 120 C | 3000-5000 |
| Density G Cm3 At 20 C | 1.10 |
| Flash Point C | >200 |
| Color Gardner | Max 6 |
| Iodine Value | 60-80 |
| Solubility | Soluble in aromatic hydrocarbons, esters, and ketones; partially soluble in aliphatic hydrocarbons; insoluble in alcohols and water |
| Compatibility | Compatible with EVA, SIS, SBS, natural rubber, and phenolic resins |
As an accredited NOVARES CA100 Phenol-Modified Coumarone Resin for Adhesives factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | NOVARES CA100 phenol-modified coumarone-indene resin is supplied as solid pastilles in 25 kg polyethylene bags, palletized and shrink-wrapped. |
| Container Loading (20′ FCL) | 20′ FCL: 25kg bags on pallets, shrink-wrapped, securely stowed for safe transport of NOVARES CA100 resin. |
| Shipping | NOVARES CA100 (Phenol-Modified Coumarone Resin) ships as solid pastilles or flakes in heat-sealed bags, drums, or FIBCs. Store dry, away from ignition sources, and avoid temperatures above 60°C to prevent caking. Non-hazardous per transport regulations; ensure adequate ventilation and handle with standard industrial hygiene practices. |
| Storage | Store NOVARES CA100 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed when not in use to prevent contamination and moisture pickup. Maintain temperatures below 30°C. Follow manufacturer guidelines; under proper conditions, shelf life is typically 12 months from manufacture date. |
| Shelf Life | Shelf life is typically 2 years from manufacture when stored in sealed, dry conditions below 30°C. |
In EVA-based hot-melt packaging adhesives, NOVARES CA100 functions as a phenol-modified coumarone-indene resin with a nominal ring-and-ball softening point of 100 °C determined under ASTM E28 and an acid number below 1.0 mg KOH/g on the manufacturer’s certificate of analysis. The resin is dry-blended with EVA grades containing 18–28 wt% vinyl acetate and a melt flow index of 150–400 g/10 min per ISO 1133-1:2022 at 190 °C/2.16 kg before compounding in a corotating twin-screw extruder with an L/D ratio of 40:1. Barrel temperatures are maintained between 140 °C and 160 °C, screw speed is held at 250–350 rpm, and vacuum venting is applied to strip residual volatile coal-tar aromatics. On production-scale case-sealing lines, the resin fraction is normally limited to 10–25 wt%; at loadings above 22 wt%, open time on recycled corrugated board shortens to less than 3 s at a 160 °C nozzle temperature, causing incomplete fibre tear under ASTM D903-98 peel angles of 180°. Below 10 wt%, the blend softening point drops below 85 °C, and heat resistance under ASTM D4498-07 with a 500 g shear load falls below 60 °C, which causes edge-lift on cases stored in non-climate-controlled warehouses at 45 °C. Thermal ageing in the premelt tank becomes a process boundary: continuous residence at 170 °C for more than 8 h initiates darkening and an acid number drift above 2.5 mg KOH/g, which correlates with degradation of the EVA acetate groups and nozzle char accumulation. Terminal constructions include case and carton closing, tray erection, and wrap-around labelling for indirect food-contact packaging; formulations intended for food packaging are assessed under FDA 21 CFR 175.105 and REACH Regulation (EC) No 1907/2006 with respect to coal-tar-derived PAH inventory.
In styrene-isoprene-styrene pressure-sensitive label adhesives, NOVARES CA100 is evaluated as a mid-softening-point aromatic tackifier that shifts the viscoelastic plateau without the aliphatic compatibility limits of C5 resins. The compounding sequence uses a sigma-blade mixer at 150–165 °C under nitrogen blanket, with SIS triblock having diblock content 15–30 wt%, styrene endblock 15–22 wt%, and naphthenic oil addition 60–90 phr. CA100 is introduced at 5–15 phr; at 5 phr the loop tack on stainless steel remains within PSTC-16 target range, while 70 °C holding power under PSTC-107 increases from less than 10 min to approximately 30 min. Increasing CA100 to 15 phr raises the Dahlquist plateau modulus and reduces initial loop tack, but improves die-cutability and liner release on rotary converting lines running at 120 m/min. A critical boundary emerges after ageing for 28 days at 50 °C in contact with silicone release liner: if CA100 exceeds 15 phr, phase separation of the aromatic resin phase is observed as haze above 5 % under ASTM D1003-21 on 50 µm adhesive films coated on 36 µm PET liner via slot-die coater. This haze corresponds to a loop tack loss exceeding 25 % under PSTC-16 and a shear adhesion failure temperature drop below 60 °C under ASTM D4498-07. In freezer-grade label stock, the formulation is diluted with an aromatic-compatible diblock-rich SIS, and the CA100 fraction is capped at 8 phr to retain -20 °C mandrel flexibility. Terminal products include logistics labels, cosmetic containers, and clear-on-clear film labels where haze below 5 % under ASTM D1003-21 and low cold flow are specified.
Solventborne polychloroprene contact adhesives accept NOVARES CA100 as a partial substitute for para-tert-butylphenol-formaldehyde resin when the solids content is lowered from 25 % to 18 % for cup-gun spray application. The resin is pre-dissolved in toluene at 50–60 °C for 60 min in a high-speed dissolver fitted with a dual-shaft scraper; direct granulate addition to the cooled mill base produces gel particles that block the 60 µm spray nozzle filter. At 100 phr polychloroprene, CA100 is charged at 20–45 phr with magnesium oxide at 4 phr and zinc oxide at 5 phr as acid acceptors. Loading above 45 phr causes the dried film to fail cohesively under ISO 11339:2022 T-peel on MDF/polyurethane foam laminates after 24 h at 23 °C. Loading below 20 phr reduces open time under forced-air drying at 40 °C to less than 2 min, which prevents sufficient solvent flash-off before contact bonding to solvent-sensitive polystyrene honeycomb panels. Spray booths equipped with regenerative thermal oxidisers must manage the toluene/ethyl acetate ratio; CA100 does not introduce halogenated solvent demand but requires storage below 35 °C in ethyl acetate-rich blends to prevent agglomeration. Terminal assemblies include automotive headliner lamination, furniture edgebanding, and footwear sole attachment where heat resistance above 80 °C is verified by static load peel at 60 °C under ISO 4587.
Across natural rubber/SBR sprayable bonding systems, NOVARES CA100 reduces nerve and improves spray fan formation without retarding sulfur cure. The two-roll mill sequence feeds NR SMR 20 at 70 phr, SBR 1502 at 30 phr, zinc oxide 5 phr, stearic acid 2 phr, sulfur 2 phr, N-cyclohexylbenzothiazole-2-sulfenamide at 1 phr, and CA100 at 10–18 phr. Mooney viscosity ML 1+4 at 100 °C decreases by 6–10 MU for each 5 phr increment of CA100, allowing air-assisted spray through a 1.2 mm nozzle at 35 % solids in toluene/hexane. Oscillating disc rheometer data at 150 °C show no significant shift in t90 within the 10–18 phr window; above 18 phr, the delta torque MH-ML decreases and the cured film loses tear strength under ISO 34-1:2022. On a cooled two-roll mill, direct granulate addition at roll temperatures above 60 °C results in resin plate-out on the mill guides and Mooney variability exceeding ±5 MU; pre-melting at 120 °C and adding as a molten stream removes the irregularity. The acid number below 1.0 mg KOH/g limits zinc oxide consumption in sulfur-cured systems; higher acid grades would require activator compensation. Terminal uses include aerosol-sprayable rubber cement, fabric-to-foam lamination in upholstery, and sound-deadening panel bonding in HVAC equipment.
In moisture-cure polyurethane hot-melt adhesives, NOVARES CA100 is introduced as a non-reactive thermoplastic diluent only after its hydroxyl value and water content are verified against the isocyanate stoichiometry. The resin is pre-dried in a vacuum oven at 80 °C for 2 h to reduce moisture below 300 ppm; residual hydroxyl functionality from the phenol modification can react with MDI if the batch is handled without inert gas blanketing. The mixing procedure adds CA100 at 5–10 wt% to the polyol phase before the isocyanate finishing step in a planetary mixer with jacket temperature 100–120 °C. In edgebanding trials on PVC-melamine board, the addition of CA100 at 7 wt% reduces stringing and improves initial green strength measured by a creep test under ISO 19212:2006 at 23 °C with a 200 g load. A process limit is the open time window: at 120 °C application temperature, open time extends beyond 4 min, which is too long for high-speed profile wrapping lines set to 40 m/min; reducing the fraction to 5 wt% shortens open time to 2–3 min. Moisture-cure formulations are stored in aluminium barrier cartridges under nitrogen; exposure to 60 % relative humidity during application leads to carbon dioxide bubble formation when the water content of the CA100 exceeds 500 ppm. Terminal products include longitudinal edgebanding, wrapping of wood-plastic composite profiles, and lamination of decorative foils onto extruded PVC window profiles. Published data for this specific configuration is limited in public literature; the rated hydroxyl and moisture tolerances must be confirmed by the resin certificate of analysis for each lot.
Perfect-binding hot-melt formulations for book spines and side gluing accept NOVARES CA100 as a low-colour aromatic tackifier that maintains adhesion to coated paper stocks without blocking in the book block. The formulation is processed in a stirred tank at 150–170 °C with no oxidative degradation when the resin fraction is kept below 15 wt%; above this level, low-temperature flex resistance decreases and the opened book can crack at 5 °C. On high-speed perfect binders running at 12,000 cycles/h, the adhesive is applied through a slot nozzle at 160–170 °C with an open time of 4–6 s; CA100 at 10 wt% extends open time without increasing set-up time on cold-section star wheel delivery. Peel adhesion loss is evaluated by page pull tests at 23 °C and -20 °C using a 10 mm jaw separation speed of 50 mm/min according to the publisher’s test specification; the CA100-containing adhesive retains fibre tear on uncoated offset paper, but coated art paper with high clay loading shows cohesive splitting within the adhesive layer if the resin exceeds 12 wt% and the adhesive is aged for 14 days at 50 °C. In side gluing applications, the aromatic resin improves non-blocking resistance in the delivery stack and reduces adhesive penetration into lightweight paper at 60 g/m². Terminal products include perfect-bound paperback books, catalogues, and instruction manuals; compliance with REACH Annex XVII entry 50 for PAH limits in consumer articles is required when the finished book block is handled frequently.
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NOVARES CA100 Phenol-Modified Coumarone Resin for Adhesives is a thermoplastic aromatic hydrocarbon resin obtained from coal-tar indene and coumarone fractions and subsequently modified with phenolic components. The grade designation CA100 indicates a nominal ring-and-ball softening point of 100 °C measured according to DIN EN 1427. Commercial material is supplied as pale flakes or pastilles with a density between 1.06 g/cm³ and 1.10 g/cm³ when tested by ISO 1183-1. Typical release documentation cites an acid number not exceeding 1.0 mg KOH/g by ISO 2114, an ash residue not exceeding 0.1 wt% by ISO 3451-1, and a Gardner color limit of 12 by ISO 4630-1. The resin is non-reactive under normal adhesive processing conditions and functions as a mid-polarity tackifying component in solvent-borne and hot-melt formulations.
Unmodified coumarone-indene resins are almost entirely hydrocarbon in character; their low hydroxyl content and low acid number produce weak interaction with polar surfaces and with polar polymers such as nitrile rubber or plasticized poly(vinyl chloride). The phenolic modification in NOVARES CA100 introduces aromatic rings bearing hydroxyl substituents and residual resinous phenols, which shift the solubility parameter into the polar region and increase the affinity of the resin for metal oxides, glass, leather, and cellulosic substrates. The difference is not merely an increase in acid number; it is expressed in the resin’s wetting and retention behavior in adhesive films. In comparative solvent-borne systems, the phenol-modified grade develops higher room-temperature peel strength on aluminum and degreased mild steel than a straight coumarone-indene resin of equal softening point. Published data for this specific configuration is limited; formulators should verify performance under ASTM D903 or DIN EN 1392 peel test conditions on the production substrate.
Compared with rosin ester tackifiers of similar softening point, NOVARES CA100 typically exhibits a lower acid number and a more aromatic character, which influences thermal stability and color behavior during long melt residence. It is not a direct substitute for pentaerythritol rosin esters where acid functionality is required for hydrogen bonding. Compared with aliphatic C5 hydrocarbon resins, the coumarone-indene backbone provides higher aromaticity and a different compatibility envelope; compared with aromatic C9 resins, the phenolic modification gives greater affinity for polar elastomers and metal surfaces, but solvent release in low-bake systems may be slower.
Resin melt viscosity is governed by the ring-and-ball softening point and by the degree of oligomerization left after vacuum stripping. For this grade, melt viscosity at 150 °C falls typically between 0.4 Pa·s and 1.2 Pa·s when measured by cone-plate rheometry at shear rates from 1 s⁻¹ to 10 s⁻¹. The melt viscosity drops rapidly above 180 °C, but prolonged exposure above 200 °C can increase color and generate phenolic odor. On co-rotating twin-screw extruders with L/D 40 and zone temperatures of 120–160 °C, the resin is preferably metered into the side feeder after polymer plastication to reduce thermal history and prevent agglomeration in the feed throat. Batch-to-batch softening point variation on producer certificates is commonly held within ± 1.5 °C of nominal; when the resin is blended in solvent-free EVA systems, this variation is usually too small to shift the final viscosity beyond the normal formulation tolerance.
Solubility follows aromatic and polar-solvent selectivity. The resin dissolves readily in toluene, xylene, ethyl acetate, methyl ethyl ketone, and mixed aromatic/ester blends, but has limited solubility in aliphatic hydrocarbons and is insoluble in water. In high-shear dissolvers used for contact adhesive manufacture, dissolution of flake in a toluene/ethyl acetate mixture at 40–50 °C reaches a clear solution more quickly when the flake is ground below 10 mm; otherwise undissolved gel cores can persist for several hours. The presence of the phenolic modification makes the resin slightly more hygroscopic than unmodified coumarone-indene grades; storage in closed bags is recommended when relative humidity exceeds 60%.
| Property | Test method | Representative range or limit |
|---|---|---|
| Softening point, ring and ball | DIN EN 1427 | 95–105 °C |
| Acid number | ISO 2114 | ≤1.0 mg KOH/g |
| Hydroxyl value, where reported | DIN EN ISO 4629-2 | 15–40 mg KOH/g |
| Gardner color | ISO 4630-1 | ≤12 |
| Ash | ISO 3451-1 | ≤0.1 wt% |
| Density at 25 °C | ISO 1183-1 | 1.06–1.10 g/cm³ |
| Flash point, Cleveland open cup | ISO 2592 | >200 °C |
In hot-melt adhesive formulations based on ethylene-vinyl acetate copolymers, NOVARES CA100 is typically evaluated at resin loadings from 10 wt% to 40 wt% relative to total polymer plus resin. Resin addition raises the high-temperature probe tack and extends open time relative to wax-only systems; the effect is balanced by a reduction in melt tensile strength when addition exceeds the compatibility limit of the EVA grade. The compatibility limit depends on vinyl acetate content. For EVA with 28 wt% vinyl acetate, clear melt blends are obtained up to approximately 35 wt% resin; higher addition leads to haze and surface exudation after annealing at 60 °C for 24 h. In pressure-sensitive hot-melt trials with styrene-isoprene-styrene block copolymers, the resin modifies the elastomer phase and shifts the glass transition temperature of the tackified formulation, but published data for this specific configuration is limited.
The polar phenolic structure also influences migration kinetics in polymer matrices. At elevated storage temperatures above 50 °C, low-molecular-weight resin fractions can migrate toward the adhesive-substrate interface and contribute to bond-line whitening or initial tack increase. This effect is controlled by using the resin at the lowest effective concentration and by verifying compatibility through aging at 50 °C for 14 days under ISO 9142 conditioning cycles. On production-scale coating lines, viscosity drift during long runs is observed when the resin is predissolved together with basic accelerators; the phenolic moieties can form colored complexes with amine-based additives during extended storage of the liquid adhesive.
In solvent-borne polychloroprene contact adhesives, unmodified coumarone-indene resin is often used at 15–30 phr as a tackifying component. Replacement with NOVARES CA100 at equal resin loading produces a harder dry film and higher initial grab on polar substrates, but there is a processing boundary: the higher softening point and polar content can increase solution viscosity and retard the final solvent release when the adhesive is applied in thick films. The resin is normally added to the milled or predissolved polychloroprene phase after the magnesium oxide and zinc oxide curative system has been dispersed. In high-shear mixing, resin flake should be added gradually to avoid localized solvent cooling and agglomeration on the vessel wall. Application viscosity measured by Brookfield viscometry at 25 °C may rise by 10–30% relative to a straight coumarone-indene control at the same solids, depending on solvent composition; no universal correction factor is available.
Bond strength comparison should be performed with DIN EN 1392 or ASTM D903 on the specified production substrate. In typical evaluations, the resin’s contribution is best isolated by preparing a solvent-borne control formulation and a test formulation in which only the tackifier is changed. The measured failure mode changes from adhesive failure to cohesive failure or from cohesive failure to substrate fiber tear depending on surface energy. However, published data for this specific formulation is limited; substrate preparation, carrier type, and film thickness exert stronger effects than the resin change alone.
In rubber-compounding and rubber-to-metal adhesives, NOVARES CA100 functions as a mid-polarity tackifying resin and processing aid. In sulfur-cured SBR and natural rubber compounds, the resin reduces compound viscosity and increases green tack when milled or mixed in an internal mixer at 50–60 °C. The phenol-modification has a measurable effect on vulcanization kinetics: because the resin contains aromatic hydroxyls, it can slightly delay sulfur cure or alter the optimum cure time when combined with sulfenamide accelerators. The shift is typically less than that produced by phenolic tackifiers or rosin acids, but cure rheometry is required. A moving-die rheometer trace at 150 °C and 1° arc according to ISO 6502 is the appropriate control. Above 5 phr, the resin may reduce Shore A hardness after aging unless the formulation compensates with filler or sulfur.
Resin storage behavior on production lines differs from unmodified coumarone-indene material in one practical respect: surface blocking of flakes in hot warehouses is more pronounced because the polar modification retains a slight surface tack. Flakes stored above 30 °C can consolidate into a mass that must be broken before pneumatic conveying. Warehouses with controlled temperatures below 25 °C avoid this. If blocking occurs, the resin remains fully usable, but the feed system must be fitted with a lump breaker and a 5–10 mm screen to protect downstream melters.
Regulatory documentation for this product includes a REACH safety data sheet and a technical data sheet. The resin is not classified as dangerous for transport; the flash point is above 200 °C by ISO 2592. Because the product is derived from coal tar, customers requesting food-contact status must explicitly confirm suitable migration limits under Regulation (EU) 10/2011 or the applicable FDA 21 CFR sections. The resin should not be assumed compliant for direct food contact. The supplier should provide a PAH content declaration; typical limits for coumarone-indene resins are set in relation to AfPS GS 2019:01 PAK when intended for consumer articles. Published data for this specific configuration is limited; batch-specific documentation is required.
| Obligation | Typical status | Standard or regulation |
|---|---|---|
| EU chemical registration | Registered; verify with SDS | Regulation (EC) No 1907/2006 |
| RoHS restricted substances | No intentional addition of Pb, Cd, Hg, Cr(VI) | IEC 62321 |
| PAH content in consumer articles | Batch-specific; category dependent | AfPS GS 2019:01 PAK |
| Food contact | Not assumed; supplier confirmation required | Regulation (EU) 10/2011 / FDA 21 CFR |
| Transport classification | Not dangerous goods under transport regulations | ADR / IMDG |
In low-solvent and solvent-free assembly adhesives, the resin is evaluated as a replacement for aromatic hydrocarbon resins where higher polarity or modified substrate wetting is required. The formulation window is bounded by the resin’s effect on melt viscosity and by the onset of phase separation in polyolefin-based systems. Polyethylene and unstabilized polypropylene are generally incompatible; the resin should not be used as the sole tackifier in those matrices. Compatibility testing by melt blending at 150–170 °C and visual evaluation after 24 h at room temperature is the minimum screening procedure.
