| HS Code | 417223 |
| Product Name | Resyn 2150 |
| Chemical Composition | Polyvinyl acetate homopolymer emulsion |
| Physical Form | Liquid dispersion |
| Appearance | White milky liquid |
| Solids Content | 55% by weight |
| Viscosity | 2000 cP |
| Ph | 5.0 |
| Density | 1.1 g/cm3 |
| Glass Transition Temperature | 15°C |
| Particle Size | 1-2 microns |
| Film Property | Clear, flexible film on drying |
| Storage Stability | 6 months at 20°C in sealed container |
As an accredited Resyn 2150 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Resyn 2150 is supplied in 55-gallon drums, 5-gallon pails, or bulk totes; net weight approximately 500 lb per drum. |
| Container Loading (20′ FCL) | 20′ FCL: load Resyn 2150 palletized drums, securely braced, labeled, ventilated, preventing leakage and shift. |
| Shipping | Resyn 2150 is shipped as a non-hazardous aqueous emulsion in lined drums, totes, or bulk tankers. Keep containers sealed, protected from freezing, and stored below 90°F. No Dangerous Goods classification applies for ground, ocean, or air transport when packaged per manufacturer guidelines. |
| Storage | Store Resyn 2150 in its original, tightly sealed container in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and incompatible materials. Maintain temperatures between 5°C and 35°C; do not allow freezing, as this can damage the emulsion. Keep containers upright to prevent leakage, and use within the manufacturer’s stated shelf life. |
| Shelf Life | Shelf life for Resyn 2150 is typically 12 months from manufacture when stored in original, unopened containers at recommended temperatures. |
In ethanol-based aerosol styling concentrates, Resyn 2150 is handled as a carboxylated vinyl acetate/crotonate film former that dissolves readily in anhydrous alcohol and permits rapid solvent flash after spraying. The resin is metered into the concentrate at 2.0–5.0 wt% solids on total fill weight. A typical concentrate is assembled by charging anhydrous ethanol at 55–90 wt%, adding aminomethyl propanol to 70–100% of theoretical carboxyl neutralization, and then dispersing the resin under low-shear agitation at 20–25 °C until optical clarity is reached. Concentrate moisture is held below 1.0 wt% because water ingress above this threshold can precipitate the partially neutralized resin and destabilize the spray pattern. The concentrate is filtered through a 0.45 μm polypropylene cartridge before filling. The filtered concentrate is blended with butane/propane/isobutane propellant 10–35 wt%, typically A-46, and charged into monobloc aluminium cans fitted with a 0.41–0.76 mm valve orifice at a pressure of 0.35–0.50 MPa at 25 °C. Filling lines require explosion-proof motors, nitrogen blanketing of the concentrate vessel, and continuous LEL monitoring. The finished aerosol article is a hair styling spray that must comply with Directive 75/324/EEC aerosol dispenser requirements and Regulation (EC) No 1223/2009 for cosmetic safety. Where the formula is placed on the California market, VOC content is kept below the CARB limit of 55% by weight for hairspray. High-humidity curl retention is evaluated in a 90% RH chamber at 25 °C. Within that test, neutralization below 60% tends to form white flakes on hair, while over-neutralization above 110% increases tack and dry time. Published data for the exact flake onset in this specific resin-propellant configuration is limited; therefore each batch is benchmarked against a retained internal reference with a fixed valve and actuator lot.
Neutralization degree is fixed before the aqueous phase is introduced because the carboxylated vinyl acetate/crotonate backbone has limited cold-water solubility below 70% neutralization. The pump styling spray is processed by dissolving Resyn 2150 in the ethanol portion at 30–40 °C, adding aminomethyl propanol to 80–100% of theoretical acid sites, and then adding deionized water under 150–300 rpm paddle agitation to reach an ethanol-to-water ratio between 60:40 and 80:20. Resin solids are held at 2.5–6.0 wt% of the total formula. The resulting bulk viscosity is commonly in the range of 3–15 mPa·s when measured with a Brookfield LV spindle 1 at 60 rpm and 25 °C. A 0.45 μm membrane filtration is performed after cooling to 20–25 °C. Trigger sprayers are specified with an output of 0.12–0.20 mL/stroke; this output is matched to actuator insert geometry because ethanol/water density shifts with minor temperature changes. Spray flake and tack are assessed on tresses at 50% RH and 25 °C. If the neutralizer is added before full resin dissolution, the batch develops persistent microgels that blind the filter. The resin must therefore be fully solvated before pH adjustment. The terminal article is a clear pump hair spray. Cosmetic GMP follows ISO 22716:2007, and the polymer appears on the INCI list as VA/Crotonates Copolymer where applicable.
For pressurized hair mousse systems, the polymer enters the water phase as a neutralized ethanol-borne solution and performs three functions: it stiffens the foam lamellae, reduces wet combing friction, and controls collapse time after dispensing. A standard manufacturing formula contains Resyn 2150 solids at 2.0–4.0 wt%, deionized water at 75–90 wt%, hydrocarbon propellant 8–15 wt%, ceteareth-25 or polysorbate 20 at 0.5–1.5 wt%, and a low-charge-density conditioning polymer at 0.2–0.6 wt%. The water-soluble ingredients are mixed at 60 °C and cooled to 40 °C before the pre-neutralized resin phase is added. This order prevents precipitation of the anionic resin with cationic conditioning agents. The batch is adjusted to pH 6.5–8.0 with citric acid or aminomethyl propanol. The bulk is filled into epoxy-lined tinplate or aluminium monobloc cans, sealed with a foam actuator valve, and gassed with A-46 propellant. Foam density is controlled at 0.08–0.15 g/cm³ by adjusting the propellant charge and actuator insert. The main process bottleneck is can corrosion at the liquid-vapour interface. A corrosion inhibitor compatible with the resin, typically sorbic acid or sodium benzoate, is included at 0.1–0.3 wt%. The finished mousse is subject to Directive 75/324/EEC and Regulation (EC) No 1223/2009. Stability protocols include 12-week storage at 45 °C and 5 °C with weekly foam density and pH checks. If the anionic charge density of the resin is not masked by nonionic emulsifiers, the mousse body becomes grainy. That observable batch failure triggers rework by adding a nonionic stabilizer.
Nail lacquer top coats use Resyn 2150 as a secondary film former to raise surface hardness without the excessive shrinkage that occurs when nitrocellulose solids exceed 15 wt%. The resin solids are charged at 5.0–12.0 wt% of the liquid formulation, with nitrocellulose at 10–15 wt%, triphenyl phosphate or acetyl tributyl citrate at 5–8 wt%, camphor at 1.5–3 wt%, and ethyl acetate/butyl acetate at 50–65 wt%. Isopropyl alcohol is held at 3–8 wt% to maintain solubility and lower viscosity. The resin is pre-blended with an equal portion of the ester solvent before being added to the nitrocellulose base under slow sweep agitation. This sequence avoids localized solvent stripping and prevents nitrocellulose particle agglomeration. The batch is mixed under vacuum at 20–25 °C for 2–4 h and filtered through a 0.45 μm polypropylene cartridge. Viscosity is adjusted to 150–350 mPa·s at 25 °C with a Brookfield LV spindle 2 at 30 rpm. The top coat dries by staged solvent evaporation: ethyl acetate flashes first, then butyl acetate, then residual alcohol. The resin remains miscible throughout this process and prevents blushing at 35–40% RH. The terminal article is a clear nail top coat. Compliance with Regulation (EC) No 1223/2009 is mandatory, and manufacture follows ISO 22716:2007. The resin should not be combined with primary amine solvents because amine neutralization of the carboxyl groups increases water sensitivity and reduces lacquer gloss under high humidity.
| Downstream system | Governing standard or method | Qualification parameter |
|---|---|---|
| Aerosol hair spray | Directive 75/324/EEC, Regulation (EC) No 1223/2009 | Can burst pressure, cosmetic safety, VOC limit 55% CARB |
| Pump styling spray | ISO 22716:2007, Regulation (EC) No 1223/2009 | GMP, batch viscosity, drop pattern |
| Pressurized hair mousse | Directive 75/324/EEC, Regulation (EC) No 1223/2009 | Can corrosion resistance, foam density |
| Nail lacquer top coat | ISO 22716:2007, Regulation (EC) No 1223/2009 | GMP, solvent residual, film clarity |
| Mascara/eyeliner | 21 CFR 73.2771, Regulation (EC) No 1223/2009, ISO 22716:2007 | Colorant purity, microbial limits, emulsion stability |
| Sunscreen | FDA 21 CFR 352.10, ISO 24444:2019, ISO 16217:2020 | SPF retention, critical wavelength, water resistance |
| Temporary hair color spray | Directive 75/324/EEC, Regulation (EC) No 1223/2009 Annex IV | Colorant authorisation, aerosol valve flow, rub-off resistance |
Mascara and liquid eyeliner batches that require smudge resistance on sebaceous eyelid skin benefit from a high-acid-number film former, but the emulsion must be formulated to delay swelling of the carboxylated backbone until after evaporation. Resin solids are included at 3.0–10.0 wt% of the finished product. The emulsion is prepared as two phases. The oil phase contains beeswax, carnauba wax, stearic acid, and glyceryl stearate heated to 85 °C. The water phase contains deionized water, triethanolamine, pigment dispersant, and black iron oxide CI 77499 also heated to 85 °C. The phases are combined under high shear at 2,500–3,500 rpm for 20–30 min. The batch is cooled to 40 °C; at this temperature the ethanol-borne Resyn 2150 solution is added slowly. The high-shear dispersed pigment must pass a Hegman grind gauge at 7 or finer before emulsification. Otherwise the finished film shows visible streaks on lashes. Final viscosity is adjusted to 15–30 Pa·s at 25 °C using a Brookfield RV T-bar spindle and the product is filled into airless mascara containers. The finished article must comply with Regulation (EC) No 1223/2009 and, for US distribution, the colorant must meet the applicable identity and purity specifications in 21 CFR 73.2771. ISO 22716:2007 governs GMP. The operational boundary is pH: below pH 6.0 the resin film contracts and may crack on lashes; above pH 8.5 the emulsion viscosity drops sharply. Batch records therefore specify pH at 6.5–7.5.
Sunscreen systems that require water-resistant labelling use Resyn 2150 at 0.5–2.0 wt% solids to reduce wash-off of organic UV filters from hydrated stratum corneum. The resin is introduced into the alcohol-oil phase, which contains ethanol at 40–60 wt%, octocrylene, avobenzone, and a low-viscosity ester emollient. The phase is mixed at 20–25 °C until the filters are completely dissolved. Avobenzone is not heated above 35 °C to avoid photoisomer degradation. A separate water phase containing glycerin and stabilizer is added under high shear, and the batch is homogenized at 8,000–12,000 rpm for 5–10 min. The resin is neutralized to 70–90% of acid functionality with aminomethyl propanol to maintain solubility after blending. The finished formula is packaged in high-density polyethylene or airless pump packaging to limit ethanol loss. Water retention is measured using the FDA 21 CFR 352.76 80-minute immersion protocol or ISO 16217:2020. The product is not labelled as water resistant unless the post-immersion SPF value remains within the required ratio. The terminal product is an OTC sunscreen in the US or a cosmetic sunscreen in the EU. Compliance requires ISO 24444:2019 or FDA 21 CFR 352.10 testing. Published data for this specific resin in high-SPF ethanol-based systems is limited, so the exact resin load must be confirmed by batch-specific critical wavelength and water-resistance screening.
Aqueous temporary hair colour and body glitter sprays use the resin as a pigment-binding film that must release from hair by ordinary shampoo. Resin solids are fixed at 4.0–9.0 wt% of the liquid fill. Pigment concentrates are dispersed separately in ethanol with a wetting agent at high shear, ground to Hegman 7, and then added to the ethanol-borne resin solution. The final liquid phase typically contains ethanol at 70–85 wt%, colourant at 1.0–5.0 wt%, and a polyether-modified siloxane at 0.1–0.5 wt%. The fill is filtered through a 0.45 μm cartridge and charged into aluminium aerosol cans with a larger-orifice valve, typically 0.50–0.80 mm, because pigment particles raise nozzle blockage risk. The can is gassed with A-46 at 0.30–0.45 MPa. Rub-off resistance is assessed after drying at 25 °C and 50% RH; shampoo washout is tested with a sodium laureth sulfate-based surfactant. The final article is a temporary hair colour spray. It must comply with Regulation (EC) No 1223/2009, and the colourant must be authorised for the intended site under Annex IV. For the US market the colourant must be permitted under 21 CFR. Ethanol flammability requires Directive 75/324/EEC aerosol safety compliance. The main process failure mode is pigment flocculation when the resin acid number is not neutralized to at least 60%; this causes visible specking and uneven colour transfer.
Competitive Resyn 2150 prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Resyn 2150 is a colloid-stabilized polyvinyl acetate homopolymer dispersion supplied at 55–57% non-volatile content by mass under ISO 3251. Brookfield RVT viscosity at 25 °C and 20 rpm, spindle 3, is reported between 1,500 mPa·s and 3,000 mPa·s under ASTM D2196. The pH is 4.0–5.0 measured with ASTM E70, and the glass transition temperature by differential scanning calorimetry under ISO 11357-2 is 31 °C. Average particle size is 0.8–1.8 µm; density is 1.08 g/cm³ at 20 °C. Residual vinyl acetate monomer content is specified below 1,000 mg/kg on as-supplied dispersion. The product is intended as a base polymer for porous-substrate adhesives, not as a finished adhesive; it requires modification with tackifiers, plasticizers, or rheology control agents depending on the converting line.
Addition of borax decahydrate between 0.3 wt% and 0.8 wt% on wet emulsion produces a controlled viscosity increase suitable for raised-print adhesive transfer. When the dose exceeds 1.5 wt%, the shear-thinning index in the 0.1–10 s⁻¹ range shifts and partial gelation becomes irreversible under high shear. On a planetary mixer with a scraped-surface sweep running at 24 rpm, borax is introduced as a 5% aqueous solution; dry powder feed generates localized coagulation. Viscosity recovery after 24 h at 23 °C is 85–95% of the initial value when measured by Brookfield RV, spindle 4, 10 rpm. Final pH should be kept below 6.8; above this threshold, wet tack decreases and dried film water sensitivity increases. Rotational rheometry per ISO 3219 is used to track shear-thinning before transfer roll installation.
In adhesives where borax-induced viscosity response is too steep, citric acid or alum-based systems provide a lower slope. At 0.2 wt% alum on wet dispersion, the product rheology remains close to Newtonian; when dosed above 0.5 wt%, the acidification can drop pH below 3.8 and initiate corrosion on carbon steel transfer rolls. Process water should have hardness below 150 mg/L as CaCO₃; higher hardness reduces the colloid solubility and raises grit formation.
In high-speed side-seam bonding of double-wall corrugated board, engraved transfer rolls on 12-roll converting lines are set to a gap of 0.35–0.50 mm when diluted viscosity is adjusted to 1,200–1,800 mPa·s. Heat-fail temperature in shear, measured on bonded paperboard under ASTM D4498, falls between 72 °C and 85 °C. Application solids are reduced to 45–52% with deionized water; dilution below 40% increases penetration into high-ash linerboard but slows drying. Peel strength on uncoated kraft after 24 h conditioning at 23 °C and 50% RH ranges from 2.0 N/mm to 3.5 N/mm under ASTM D1876. Because the homopolymer film is not internally plasticized, formulations for cold-flexible packaging require 3–10 wt% plasticizer on dry binder; otherwise the film may crack below 5 °C.
When the coating line operates above 180 m/min with radiant infrared predrying, maximum wet film thickness without steam blisters is 25–30 µm; heavier films retain water under a skin layer and reduce fiber tear. In rotary die-cut label stock, an anilox roll with a 140-line/cm pattern and 18 cm³/m² volume delivers 12–16 g/m² dry coat weight. Drying capacity must hold web surface temperature at 65–75 °C for 3–5 s to reach adequate fiber-tearing bond. Online viscometers should be set to a deadband of ±50 mPa·s because shear history and evaporative loss shift the return-trough rheology.
The minimum film formation temperature of 16 °C under ASTM D2354 requires low-temperature packaging lines to maintain substrate surface temperature above 18 °C during wet lamination. In cold-climate corrugated plants, plasticizer addition of 5–10 wt% dry binder can depress film formation to below 5 °C, but the same addition lowers heat-fail temperature by 10–18 °C depending on plasticizer type. The trade-off is not linear; phthalate-free benzoate plasticizers produce larger softening than citrate esters at equal dose, and the effect is tracked by ISO 6721-11 dynamic mechanical analysis.
Mineral-coated folding carton stock with surface energy below 38 mN/m and calcium carbonate filler content above 12% represents a critical substrate class. Open time after transfer remains 35–60 s at 23 °C and 50% RH; beyond 90 s, the wet film skins and interfacial peel replaces fiber-tearing failure. Static peel strength after 24 h under ASTM D1876 on clay-coated SBS board averages 2.4 N/mm with 70–85% fiber tear, whereas the same formulation on low-ash kraft gives 85–95% fiber tear. Raising coat weight above 35 g/m² does not correct this loss uniformly; instead, adhesive solids are increased from 50% to 54% and a polyvinyl alcohol rheology modifier is added at 0.5–1.0 wt% on wet dispersion.
When calcium carbonate or clay fillers are milled into Resyn 2150, the dispersion accepts 20–30 wt% filler on total batch without losing adhesive continuity if agitation is maintained below 300 rpm and filler is pre-dispersed as a slurry. Above 30 wt%, wet tack drops below 1.0 N/25 mm in the loop tack method and open time shortens below 20 s. Use of a dissolver disc above 700 rpm raises batch temperature above 38 °C and accelerates pH drift.
Surface starch at 1.2 g/m² or higher changes the wetting balance because starch absorbs water and competes with adhesive penetration. On such linerboard, a transfer coat weight of 18–22 g/m² dry is required to maintain fiber tear above 60%; at 12 g/m² dry, bond failure becomes cohesive within the starch layer. A pre-treatment of 0.2–0.5 g/m² of a crosslinking agent may be required when the board is wetted again in lamination. Wet tack measured by a loop tack method adapted from ASTM D6195 falls from 1.8 N/25 mm to 1.1 N/25 mm as surface starch rises from 0.6 g/m² to 2.0 g/m². Operators compensate by increasing adhesive solids and reducing open time below 45 s.
In wood veneer edge bonding, a roll coater applied at 60–90 g/m² wet to expanded PVC edge band is pressed at 1.0–2.0 bar for 15–30 s; the heat resistance of Resyn 2150 allows hot-press temperatures at 70–80 °C without squeeze-out. For high-pressure laminates, open assembly time must be shorter than 60 s; otherwise, the skin-over prevents wetting of the second substrate and leads to delamination when tested under ASTM D905 compressive shear.
For food-contact paperboard laminations, the dry adhesive film is formulated within FDA 21 CFR 175.105 for indirect food contact; the wet dispersion itself is not a direct food-contact finish. Compliance under EC 1935/2004 requires overall migration below 10 mg/dm² when the final article is tested under EU 10/2011 conditions for the intended food simulant. The product is not recommended for continuous water immersion, aqueous ethanol above 20%, or contact with low-molecular-weight amines because alkaline pH above 8.5 hydrolyzes the polyvinyl acetate backbone and releases acetic acid. Long-term UV exposure in exterior laminates is not supported by published data for this specific configuration.
Compared with vinyl acetate–ethylene copolymers, Resyn 2150 has higher heat-fail temperature and lower low-temperature flexibility. Compared with vinyl acetate–acrylic copolymers, its alkali resistance and UV resistance are lower, but its bond strength on paperboard at equivalent solids is frequently higher. The differences are critical when converting lines switch from one dispersion to another with the same roll settings; viscosity at equivalent solids and shear history is not interchangeable.
| Parameter | Method | Resyn 2150 | VAE copolymer | VA/acrylic copolymer |
|---|---|---|---|---|
| Non-volatile content | ISO 3251 | 55–57% | 54–56% | 50–55% |
| Brookfield viscosity at 25 °C | ASTM D2196 | 1,500–3,000 mPa·s | 2,000–5,000 mPa·s | 800–2,500 mPa·s |
| Glass transition temperature | ISO 11357-2 | 31 °C | -15 °C | 12 °C |
| Minimum film formation temperature | ASTM D2354 | 16 °C | 0 °C | 5 °C |
| Heat-fail temperature in shear | ASTM D4498 | 72–85 °C | 40–55 °C | 55–70 °C |
| Wet bond strength after 24 h water soak | EN 204 D3 | < 1.0 N/mm² | 1.5–2.5 N/mm² | 1.0–1.8 N/mm² |
Storage below 5 °C is not permitted. Freeze-thaw cycling under ASTM D2243 can produce coagulum because the dispersion does not contain antifreeze formulation. The material is held at 15–30 °C in closed stainless or high-density polyethylene vessels. Low-shear turbine agitation below 60 rpm is adequate for rehomogenization; high-speed dissolvers above 500 rpm can break the polyvinyl alcohol protective colloid and raise grit retention on a 45 µm screen above 50 mg/L. Equipment cleanup uses warm water before film coalescence; dried film is not redispersible and requires solvent-assisted removal from rolls and doctor blades.
| Compliance dimension | Reference | Boundary |
|---|---|---|
| Indirect food contact adhesive | FDA 21 CFR 175.105 | Dry film only; coating weight limited by section |
| Paper and paperboard for food contact | FDA 21 CFR 176.170 | Finished board may require extraction testing |
| European framework for food contact | EC 1935/2004 | Overall migration 10 mg/dm² |
| Specific migration of monomers | EU 10/2011 | Not directly applicable to wet dispersion |
| Volatile organic content | EPA Method 24 / ASTM D6886 | < 10 g/L as supplied |
| Heavy metals | RoHS 2011/65/EU | Applicable only to finished electronic packaging laminate |
Published data for exterior-grade UV exposure and for continuous immersion in high-pH cleaning solutions is limited; those service conditions require additional crosslinking and barrier layers. Elevated processing above 50 °C in storage or application can cause skinning and viscosity drift that is not recoverable by dilution.
